CN118186758A - Antibacterial deodorant nano composite protective clothing material and preparation method thereof - Google Patents

Abstract

The present invention relates to the technical field of protective clothing materials, and in particular to an antibacterial and deodorizing nanocomposite protective clothing material and a preparation method thereof, which solves the shortcomings existing in the prior art and comprises the following components: 30 to 40 parts of polycaprolactone nanofibers, 5 to 10 parts of silver nanowires, 10 to 15 parts of antibacterial peptide nanostructures, 10 to 15 parts of nano titanium dioxide, 5 to 10 parts of nano activated carbon, 5 to 10 parts of nano silicon dioxide, 5 to 10 parts of nano zinc oxide, 2 to 5 parts of nano antibacterial agent carriers, 3 to 5 parts of hydrophilic nano coatings, and 2 to 4 parts of biocompatible nano additives. The present invention utilizes nano antibacterial components and activated carbon to achieve long-term antibacterial and deodorizing effects, while ensuring breathability and comfort. Biocompatible materials and nano silicon dioxide enhance mechanical properties, improve service life, and meet the requirements of sustainable development.

Description

Antibacterial and deodorizing nanocomposite protective clothing material and preparation method thereof

Technical Field

The invention relates to the technical field of protective clothing materials, and in particular to an antibacterial and deodorizing nano-composite protective clothing material and a preparation method thereof.

Background technique

As people pay more and more attention to health and personal hygiene, the application of antibacterial and deodorizing materials in daily life has become more and more widespread. Especially in the clothing industry, since the human body is prone to sweating during exercise or in high temperature environments, this provides favorable conditions for the growth of microorganisms, resulting in clothing being prone to odor and bacterial reproduction. Therefore, the development of clothing materials with antibacterial and deodorizing functions is of great significance to improving people's quality of life, reducing the spread of diseases and improving public health.

Most of the existing antibacterial and deodorizing materials adopt the method of coating or adding antibacterial agents on the surface of fabrics. Although these materials can inhibit the growth and reproduction of microorganisms to a certain extent, they still have the following shortcomings:

Many existing antibacterial materials are only effective for a short period of time, and the antibacterial effect is not long-lasting. As time goes by and the number of washings increases, the activity of the antibacterial agent will gradually decrease, resulting in a decrease in the antibacterial effect; although some existing materials have antibacterial functions, their ability to adsorb and decompose odor substances is limited, and the deodorizing effect is poor. This will result in the inability to effectively eliminate the odor generated by clothing during use, although the growth of bacteria is inhibited; some antibacterial and deodorizing materials will affect the structure of the fabric during the processing process, reducing its comfort and breathability. This makes people feel stuffy and uncomfortable when wearing such clothing, affecting the user experience; some antibacterial and deodorizing materials use chemicals that are harmful to the human body and the environment during the production and processing process, which does not meet the requirements of sustainable development. Therefore, the development of environmentally friendly and safe antibacterial and deodorizing materials is a future development trend.

Therefore, we proposed an antibacterial and deodorizing nanocomposite protective clothing material and a preparation method to solve the above problems.

Summary of the invention

The purpose of the present invention is to solve the shortcomings of the prior art and to propose an antibacterial and deodorizing nano-composite protective clothing material and a preparation method.

In order to achieve the above object, the present invention adopts the following technical solutions:

An antibacterial and deodorizing nano-composite protective clothing material comprises the following components by weight: 30-40 parts of polycaprolactone nanofibers, 5-10 parts of silver nanowires, 10-15 parts of antibacterial peptide nanostructures, 10-15 parts of nano-titanium dioxide, 5-10 parts of nano-activated carbon, 5-10 parts of nano-silicon dioxide, 5-10 parts of nano-zinc oxide, 2-5 parts of nano-scale antibacterial agent carriers, 3-5 parts of hydrophilic nano-coatings, and 2-4 parts of biocompatible nano-additives.

Preferably, an antibacterial and deodorizing nano-composite protective clothing material comprises the following ingredients by weight: 35 parts of polycaprolactone nanofibers, 6 parts of silver nanowires, 12 parts of antimicrobial peptide nanostructures, 13 parts of nano-titanium dioxide, 7 parts of nano-activated carbon, 8 parts of nano-silicon dioxide, 7 parts of nano-zinc oxide, 4 parts of nano-scale antibacterial agent carriers, 4 parts of hydrophilic nano-coatings, and 3 parts of biocompatible nano-additives.

Preferably, the average diameter of the polycaprolactone nanofibers is 10 to 80 nanometers, the average diameter of the silver nanowires is 40 to 60 nanometers, the length is controlled at 20 to 30 microns, the molecular weight of the antimicrobial peptide nanostructure is 1000 to 2000 Daltons, and the particle size of the nano-titanium dioxide is controlled at 10 to 20 nanometers.

Preferably, the specific surface area of the nano activated carbon is 1500-2000 ^m2 /g, the particle size of the nano silicon dioxide is 20-50 nanometers, the particle size of the nano zinc oxide is controlled within the range of 30-50 nanometers, the particle size of the nano antibacterial agent carrier is 10-50 nanometers, and the particle size of the biocompatible nano additive is 3-40 nanometers.

Preferably, the nanoscale antibacterial agent carrier is mesoporous silica nanoparticles, the hydrophilic nanocoating is a polyethylene glycol-based nanocoating, and the biocompatible nanoadditive is hydroxyapatite nanoparticles.

The second aspect of the present invention provides a method for preparing an antibacterial and deodorizing nanocomposite protective clothing material, comprising the following steps:

S1: Disperse silver nanowires in an ethanol solution, stir with an ultrasonic stirrer for 30 minutes to ensure that the silver nanowires are evenly dispersed, add antimicrobial peptide nanostructures into deionized water, stir until completely dissolved, add nano-titanium dioxide and nano-zinc oxide to the antimicrobial peptide solution respectively, stir and mix again to obtain an antimicrobial solution;

S2: Place the polycaprolactone nanofiber membrane on a flat table, use a spray gun to evenly spray the antibacterial solution on one side of the fiber membrane, ensure that the solution completely penetrates between the fibers, put the sprayed fiber membrane into an oven, and dry it at 60°C for 2 hours to make the antibacterial components firmly attached to the fibers;

S3: Disperse the nano activated carbon in the acrylic adhesive and stir evenly to form an anti-odor coating solution. Use the dipping method to immerse the polycaprolactone nanofiber membrane in the anti-odor coating solution at a speed of 1 m/min to ensure that the other side of the fiber membrane is evenly coated with the anti-odor coating. The dipping time is 5 minutes. Put the impregnated fiber membrane into the oven again and dry it at 80°C for 1 hour to firmly fix the anti-odor coating.

S4: Sprinkle nano-silicon dioxide powder on the fiber membrane coated with the antibacterial layer and the deodorizing layer, with a powder spreading amount of 1g/ ^m2 , and then compound it with the fiber membrane by hot pressing, with a hot pressing temperature of 120℃, a pressure of 2MPa, and a time of 5 minutes to enhance the mechanical properties and wear resistance of the material, mix the nano-scale antibacterial agent carrier with the antibacterial agent, stir at a stirring speed of 1000rpm for 30 minutes to fully absorb the antibacterial agent, and use a syringe to inject the nano-scale antibacterial agent carrier containing the antibacterial agent into the interior of the fiber membrane to ensure that the antibacterial agent can be slowly released in the fiber membrane to achieve a long-lasting antibacterial effect;

S5: uniformly coating the hydrophilic polymer solution on the outer surface of the fiber membrane by spin coating to form a hydrophilic nano coating, drying the coated fiber membrane at room temperature, and then performing a heat treatment to enhance the adhesion of the coating;

S6: Mix the biocompatible nano-additives with the fiber membrane and stir them at 2000 rpm using a high-speed mixer for 10 minutes to ensure that the additives are evenly distributed in the fiber membrane. Finally, cut and sew the prepared antibacterial and deodorizing nano-composite protective clothing material in a clean environment to make the desired clothing products.

Preferably, in S1, silver nanowires are dispersed in an ethanol solution, stirred at a frequency of 40 kHz for 30 minutes using an ultrasonic stirrer to ensure that the silver nanowires are evenly dispersed, the antimicrobial peptide nanostructure is added to deionized water, the pH value is adjusted to 7.0, the stirring speed is controlled at 300 rpm, and stirred until completely dissolved, nano-titanium dioxide and nano-zinc oxide are respectively added to the antimicrobial peptide solution, the stirring speed is increased to 500 rpm, and stirred again to mix evenly to obtain an antibacterial solution.

Preferably, in S2, the polycaprolactone nanofiber membrane is placed on a flat table with a temperature of 25°C and a humidity of 50%, and the antibacterial solution is evenly sprayed on one side of the fiber membrane using a spray gun. The spraying distance is 20 cm and the spraying pressure is 0.2 MPa. Ensure that the solution completely penetrates between the fibers. Put the sprayed fiber membrane into an oven and dry it at 60°C for 2 hours to firmly attach the antibacterial components to the fibers.

Preferably, in S5, the hydrophilic polymer solution is evenly coated on the outer surface of the fiber membrane by spin coating at a speed of 3000 rpm to form a hydrophilic nanocoating. The coated fiber membrane is dried at room temperature for 24 hours and then heat treated at a temperature of 100°C for 1 hour to enhance the adhesion of the coating.

Preferably, the deposition thickness of the coating on the fiber membrane is set to D, then:

D＝K\cdot\frac{V_{coat}}{A_{membrane}}

Where, K is the coating deposition coefficient, which is related to the viscosity of the coating solution and the liquid absorption of the fiber membrane, V_: the volume of the coating solution, A_: the area of the fiber membrane, the unit of V_{coat} is milliliter, and the unit of A_{membrane} is square centimeters

Compared with the prior art, the present invention aims to achieve efficient and lasting antibacterial and deodorizing functions through a carefully designed combination of ingredients, including polycaprolactone nanofibers, silver nanowires, antimicrobial peptide nanostructures, nano-titanium dioxide, nano-activated carbon and other multiple composite nano ingredients. During the preparation process, these nano ingredients are evenly integrated into the protective clothing material through specific process steps to ensure the maximization of its antibacterial and deodorizing properties.

Beneficial effects:

1. Antibacterial ingredients such as silver nanowires, antimicrobial peptide nanostructures and nano-titanium dioxide, combined with the use of nano-scale antibacterial agent carriers, can achieve the slow release of antibacterial agents in the fiber membrane, thereby achieving a long-lasting antibacterial effect.

2. Through the efficient adsorption of nano-activated carbon, this technology can significantly remove odor molecules and improve the anti-odor performance of protective clothing.

3. The nanoscale size of polycaprolactone nanofibers and silver nanowires ensures the breathability and comfort of the protective clothing material.

4. The materials used are all biocompatible and environmentally friendly, such as polycaprolactone nanofibers and biocompatible nanoadditives, which reduce potential harm to the human body and the environment and meet the requirements of sustainable development.

5. Through the addition of nano-silicon dioxide, this technology significantly enhances the mechanical properties and wear resistance of the material and increases the service life of the protective clothing.

In summary, this technology achieves comprehensive optimization of antibacterial and deodorizing nanocomposite protective clothing materials through innovative ingredient combinations and preparation processes, solves many key problems in existing technologies, and provides an efficient, safe and environmentally friendly solution for the clothing industry.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a data line graph of an embodiment of the present invention and a comparative example;

FIG. 2 is a data bar chart of the embodiments and comparative examples of the present invention.

Detailed ways

Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the invention belongs. In the event of a conflict, the definitions in the specification shall prevail. "When mass, concentration, temperature, time, or other value or parameter is expressed as a range, a preferred range, or a range defined by a series of upper preferred values and lower preferred values, this should be understood to specifically disclose all ranges formed by any pairing of any upper range limit or preferred value with any lower range limit or preferred value, regardless of whether the range is disclosed separately. For example, a range of 1-50 should be understood to include 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91 6, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, or 50, any number, combination of numbers, or subrange, and all decimal values between the above integers, for example, 1.1, 1.2, 1.3, 1.4, 1.5, 1.6, 1.7, 1.8, and 1.9. With respect to subranges, "nested subranges" extending from any endpoint within the range are specifically contemplated. For example, nested subranges of the exemplary range 1-50 may include 1-10, 1-20, 1-30, and 1-40 in one direction, or 50-40, 50-30, 50-20, and 50-10 in the other direction."

The present invention is further explained below in conjunction with specific examples. In the following examples, various processes and methods not described in detail are conventional methods known in the art. The materials, reagents, devices, instruments, equipment, etc. used in the following examples, unless otherwise specified, can all be obtained from commercial sources.

Embodiment 1

An antibacterial and deodorizing nano-composite protective clothing material comprises the following components by weight: 30 parts of polycaprolactone nanofibers, 5 parts of silver nanowires, 10 parts of antibacterial peptide nanostructures, 10 parts of nano-titanium dioxide, 5 parts of nano-activated carbon, 5 parts of nano-silicon dioxide, 5 parts of nano-zinc oxide, 2 parts of nano-scale antibacterial agent carriers, 3 parts of hydrophilic nano-coatings, and 2 parts of biocompatible nano-additives.

Among them, the average diameter of polycaprolactone nanofibers is 10 nanometers, the average diameter of silver nanowires is 40 nanometers, the length is controlled at 20 microns, the molecular weight of the antimicrobial peptide nanostructure is 1000 Daltons, the particle size of nano titanium dioxide is controlled at 10 nanometers, the specific surface area of nano activated carbon is ^1500m2 /g, the particle size of nano silicon dioxide is within the range of 20 nanometers, the particle size of nano zinc oxide is controlled within the range of 30 nanometers, the particle size of the nano-scale antibacterial agent carrier is within the range of 10 nanometers, the particle size of the biocompatible nano additive is within the range of 3 nanometers, the nano-scale antibacterial agent carrier is mesoporous silica nanoparticles, the hydrophilic nano coating is a nano coating based on polyethylene glycol, and the biocompatible nano additive uses hydroxyapatite nanoparticles.

The embodiment also provides a method for preparing an antibacterial and deodorizing nanocomposite protective clothing material, which is characterized by comprising the following steps:

S1: Disperse silver nanowires in an ethanol solution, stir at a frequency of 40kHz for 30 minutes using an ultrasonic stirrer to ensure uniform dispersion of the silver nanowires, add antimicrobial peptide nanostructures into deionized water, adjust the pH value to 7.0, control the stirring speed at 300rpm, stir until completely dissolved, add nano-titanium dioxide and nano-zinc oxide to the antimicrobial peptide solution, increase the stirring speed to 500rpm, stir again to mix evenly, and obtain an antimicrobial solution;

S2: Place the polycaprolactone nanofiber membrane on a flat table with a temperature of 25°C and a humidity of 50%, and use a spray gun to evenly spray the antibacterial solution on one side of the fiber membrane. The spraying distance is 20 cm and the spraying pressure is 0.2 MPa. Ensure that the solution completely penetrates between the fibers. Place the sprayed fiber membrane in an oven and dry it at 60°C for 2 hours to firmly attach the antibacterial components to the fibers.

S3: Disperse the nano activated carbon in the acrylic adhesive and stir evenly to form an anti-odor coating solution. Use the dipping method to immerse the polycaprolactone nanofiber membrane in the anti-odor coating solution at a speed of 1 m/min to ensure that the other side of the fiber membrane is evenly coated with the anti-odor coating. The dipping time is 5 minutes. Put the impregnated fiber membrane into the oven again and dry it at 80°C for 1 hour to firmly fix the anti-odor coating.

S4: Sprinkle nano-silicon dioxide powder on the fiber membrane coated with the antibacterial layer and the deodorizing layer, with a powder spreading amount of 1g/ ^m2 , and then compound it with the fiber membrane by hot pressing, with a hot pressing temperature of 120℃, a pressure of 2MPa, and a time of 5 minutes to enhance the mechanical properties and wear resistance of the material, mix the nano-scale antibacterial agent carrier with the antibacterial agent, stir at a stirring speed of 1000rpm for 30 minutes to fully absorb the antibacterial agent, and use a syringe to inject the nano-scale antibacterial agent carrier containing the antibacterial agent into the interior of the fiber membrane to ensure that the antibacterial agent can be slowly released in the fiber membrane to achieve a long-lasting antibacterial effect;

S5: The hydrophilic polymer solution is evenly coated on the outer surface of the fiber membrane by spin coating at a speed of 3000 rpm to form a hydrophilic nano coating, and the coated fiber membrane is dried at room temperature for 24 hours, and then heat treated at a temperature of 100° C. for 1 hour, and then heat treated to enhance the adhesion of the coating;

S6: Mix the biocompatible nano-additives with the fiber membrane and stir them at 2000 rpm using a high-speed mixer for 10 minutes to ensure that the additives are evenly distributed in the fiber membrane. Finally, cut and sew the prepared antibacterial and deodorizing nano-composite protective clothing material in a clean environment to make the desired clothing products.

Where, the deposition thickness of the coating on the fiber membrane is set to D, then:

D＝K\cdot\frac{V_{coat}}{A_{membrane}}

Among them, K is the coating deposition coefficient, which is related to the viscosity of the coating solution and the liquid absorption of the fiber membrane, V_: the volume of the coating solution, A_: the area of the fiber membrane, the unit of V_{coat} is milliliter, and the unit of A_{membrane} is square centimeter.

Embodiment 2

An antibacterial and deodorizing nano-composite protective clothing material comprises the following components by weight: 33 parts of polycaprolactone nanofibers, 6 parts of silver nanowires, 12 parts of antibacterial peptide nanostructures, 11 parts of nano-titanium dioxide, 7 parts of nano-activated carbon, 6 parts of nano-silicon dioxide, 7 parts of nano-zinc oxide, 3 parts of nano-scale antibacterial agent carriers, 4 parts of hydrophilic nano-coatings, and 3 parts of biocompatible nano-additives.

Among them, the average diameter of polycaprolactone nanofibers is 20 nanometers, the average diameter of silver nanowires is 45 nanometers, the length is controlled at 22 microns, the molecular weight of the antimicrobial peptide nanostructure is 1200 Daltons, the particle size of nano titanium dioxide is controlled at 13 nanometers, the specific surface area of nano activated carbon is ^1600m2 /g, the particle size of nano silicon dioxide is within the range of 25 nanometers, the particle size of nano zinc oxide is controlled within the range of 35 nanometers, the particle size of the nano-scale antimicrobial agent carrier is within the range of 20 nanometers, the particle size of the biocompatible nano additive is within the range of 5 nanometers, the nano-scale antimicrobial agent carrier is mesoporous silica nanoparticles, the hydrophilic nano coating is a nano coating based on polyethylene glycol, and the biocompatible nano additive uses hydroxyapatite nanoparticles.

The embodiment also provides a method for preparing an antibacterial and deodorizing nanocomposite protective clothing material, which is characterized by comprising the following steps:

S1: Disperse silver nanowires in an ethanol solution, stir at a frequency of 40kHz for 30 minutes using an ultrasonic stirrer to ensure uniform dispersion of the silver nanowires, add antimicrobial peptide nanostructures into deionized water, adjust the pH value to 7.0, control the stirring speed at 300rpm, stir until completely dissolved, add nano-titanium dioxide and nano-zinc oxide to the antimicrobial peptide solution, increase the stirring speed to 500rpm, stir again to mix evenly, and obtain an antimicrobial solution;

S2: Place the polycaprolactone nanofiber membrane on a flat table with a temperature of 25°C and a humidity of 50%, and use a spray gun to evenly spray the antibacterial solution on one side of the fiber membrane. The spraying distance is 20 cm and the spraying pressure is 0.2 MPa. Ensure that the solution completely penetrates between the fibers. Place the sprayed fiber membrane in an oven and dry it at 60°C for 2 hours to firmly attach the antibacterial components to the fibers.

S3: Disperse the nano activated carbon in the acrylic adhesive and stir evenly to form an anti-odor coating solution. Use the dipping method to immerse the polycaprolactone nanofiber membrane in the anti-odor coating solution at a speed of 1 m/min to ensure that the other side of the fiber membrane is evenly coated with the anti-odor coating. The dipping time is 5 minutes. Put the impregnated fiber membrane into the oven again and dry it at 80°C for 1 hour to firmly fix the anti-odor coating.

S4: Sprinkle nano-silicon dioxide powder on the fiber membrane coated with the antibacterial layer and the deodorizing layer, with a powder spreading amount of 1g/ ^m2 , and then compound it with the fiber membrane by hot pressing, with a hot pressing temperature of 120℃, a pressure of 2MPa, and a time of 5 minutes to enhance the mechanical properties and wear resistance of the material, mix the nano-scale antibacterial agent carrier with the antibacterial agent, stir at a stirring speed of 1000rpm for 30 minutes to fully absorb the antibacterial agent, and use a syringe to inject the nano-scale antibacterial agent carrier containing the antibacterial agent into the interior of the fiber membrane to ensure that the antibacterial agent can be slowly released in the fiber membrane to achieve a long-lasting antibacterial effect;

S5: The hydrophilic polymer solution is evenly coated on the outer surface of the fiber membrane by spin coating at a speed of 3000 rpm to form a hydrophilic nano coating, and the coated fiber membrane is dried at room temperature for 24 hours, and then heat treated at a temperature of 100° C. for 1 hour, and then heat treated to enhance the adhesion of the coating;

S6: Mix the biocompatible nano-additives with the fiber membrane and stir them at 2000 rpm using a high-speed mixer for 10 minutes to ensure that the additives are evenly distributed in the fiber membrane. Finally, cut and sew the prepared antibacterial and deodorizing nano-composite protective clothing material in a clean environment to make the desired clothing products.

Where, the deposition thickness of the coating on the fiber membrane is set to D, then:

D＝K\cdot\frac{V_{coat}}{A_{membrane}}

Among them, K is the coating deposition coefficient, which is related to the viscosity of the coating solution and the liquid absorption of the fiber membrane, V_: the volume of the coating solution, A_: the area of the fiber membrane, the unit of V_{coat} is milliliter, and the unit of A_{membrane} is square centimeter.

Embodiment 3

An antibacterial and deodorizing nano-composite protective clothing material comprises the following components by weight: 38 parts of polycaprolactone nanofibers, 8 parts of silver nanowires, 14 parts of antibacterial peptide nanostructures, 13 parts of nano-titanium dioxide, 9 parts of nano-activated carbon, 8 parts of nano-silicon dioxide, 9 parts of nano-zinc oxide, 4 parts of nano-scale antibacterial agent carriers, 4 parts of hydrophilic nano-coatings, and 3 parts of biocompatible nano-additives.

Among them, the average diameter of polycaprolactone nanofibers is 70 nanometers, the average diameter of silver nanowires is 50 nanometers, the length is controlled at 28 microns, the molecular weight of the antimicrobial peptide nanostructure is 1800 Daltons, the particle size of nano titanium dioxide is controlled at 18 nanometers, the specific surface area of nano activated carbon is ^1900m2 /g, the particle size of nano silicon dioxide is within 40 nanometers, the particle size of nano zinc oxide is controlled within 40 nanometers, the particle size of the nano-scale antibacterial agent carrier is within 40 nanometers, the particle size of the biocompatible nano additive is within 35 nanometers, the nano-scale antibacterial agent carrier is mesoporous silica nanoparticles, the hydrophilic nano coating is a nano coating based on polyethylene glycol, and the biocompatible nano additive uses hydroxyapatite nanoparticles.

The embodiment also provides a method for preparing an antibacterial and deodorizing nanocomposite protective clothing material, which is characterized by comprising the following steps:

S1: Disperse silver nanowires in an ethanol solution, stir at a frequency of 40kHz for 30 minutes using an ultrasonic stirrer to ensure uniform dispersion of the silver nanowires, add antimicrobial peptide nanostructures into deionized water, adjust the pH value to 7.0, control the stirring speed at 300rpm, stir until completely dissolved, add nano-titanium dioxide and nano-zinc oxide to the antimicrobial peptide solution, increase the stirring speed to 500rpm, stir again to mix evenly, and obtain an antimicrobial solution;

S2: Place the polycaprolactone nanofiber membrane on a flat table with a temperature of 25°C and a humidity of 50%, and use a spray gun to evenly spray the antibacterial solution on one side of the fiber membrane. The spraying distance is 20 cm and the spraying pressure is 0.2 MPa. Ensure that the solution completely penetrates between the fibers. Place the sprayed fiber membrane in an oven and dry it at 60°C for 2 hours to firmly attach the antibacterial components to the fibers.

S3: Disperse the nano activated carbon in the acrylic adhesive and stir evenly to form an anti-odor coating solution. Use the dipping method to immerse the polycaprolactone nanofiber membrane in the anti-odor coating solution at a speed of 1 m/min to ensure that the other side of the fiber membrane is evenly coated with the anti-odor coating. The dipping time is 5 minutes. Put the impregnated fiber membrane into the oven again and dry it at 80°C for 1 hour to firmly fix the anti-odor coating.

S4: Sprinkle nano-silicon dioxide powder on the fiber membrane coated with the antibacterial layer and the deodorizing layer, with a powder spreading amount of 1g/ ^m2 , and then compound it with the fiber membrane by hot pressing, with a hot pressing temperature of 120℃, a pressure of 2MPa, and a time of 5 minutes to enhance the mechanical properties and wear resistance of the material, mix the nano-scale antibacterial agent carrier with the antibacterial agent, stir at a stirring speed of 1000rpm for 30 minutes to fully absorb the antibacterial agent, and use a syringe to inject the nano-scale antibacterial agent carrier containing the antibacterial agent into the interior of the fiber membrane to ensure that the antibacterial agent can be slowly released in the fiber membrane to achieve a long-lasting antibacterial effect;

S5: The hydrophilic polymer solution is evenly coated on the outer surface of the fiber membrane by spin coating at a speed of 3000 rpm to form a hydrophilic nano coating, and the coated fiber membrane is dried at room temperature for 24 hours, and then heat treated at a temperature of 100° C. for 1 hour, and then heat treated to enhance the adhesion of the coating;

S6: Mix the biocompatible nano-additives with the fiber membrane and stir them at 2000 rpm using a high-speed mixer for 10 minutes to ensure that the additives are evenly distributed in the fiber membrane. Finally, cut and sew the prepared antibacterial and deodorizing nano-composite protective clothing material in a clean environment to make the desired clothing products.

Where, the deposition thickness of the coating on the fiber membrane is set to D, then:

D＝K\cdot\frac{V_{coat}}{A_{membrane}}

Among them, K is the coating deposition coefficient, which is related to the viscosity of the coating solution and the liquid absorption of the fiber membrane, V_: the volume of the coating solution, A_: the area of the fiber membrane, the unit of V_{coat} is milliliter, and the unit of A_{membrane} is square centimeter.

Embodiment 4

An antibacterial and deodorizing nano-composite protective clothing material comprises the following components by weight: 40 parts of polycaprolactone nanofibers, 10 parts of silver nanowires, 15 parts of antibacterial peptide nanostructures, 15 parts of nano-titanium dioxide, 10 parts of nano-activated carbon, 10 parts of nano-silicon dioxide, 10 parts of nano-zinc oxide, 5 parts of nano-scale antibacterial agent carriers, 5 parts of hydrophilic nano-coatings, and 4 parts of biocompatible nano-additives.

Among them, the average diameter of polycaprolactone nanofibers is 80 nanometers, the average diameter of silver nanowires is 60 nanometers, the length is controlled at 30 microns, the molecular weight of the antimicrobial peptide nanostructure is 2000 Daltons, the particle size of nano titanium dioxide is controlled at 20 nanometers, the specific surface area of nano activated carbon is ^2000m2 /g, the particle size of nano silicon dioxide is within the range of 50 nanometers, the particle size of nano zinc oxide is controlled within the range of 50 nanometers, the particle size of the nano-scale antibacterial agent carrier is within the range of 50 nanometers, the particle size of the biocompatible nano additive is within the range of 40 nanometers, the nano-scale antibacterial agent carrier is mesoporous silica nanoparticles, the hydrophilic nano coating is a nano coating based on polyethylene glycol, and the biocompatible nano additive uses hydroxyapatite nanoparticles.

The embodiment also provides a method for preparing an antibacterial and deodorizing nanocomposite protective clothing material, which is characterized by comprising the following steps:

S1: Disperse silver nanowires in an ethanol solution, stir at a frequency of 40kHz for 30 minutes using an ultrasonic stirrer to ensure uniform dispersion of the silver nanowires, add antimicrobial peptide nanostructures into deionized water, adjust the pH value to 7.0, control the stirring speed at 300rpm, stir until completely dissolved, add nano-titanium dioxide and nano-zinc oxide to the antimicrobial peptide solution, increase the stirring speed to 500rpm, stir again to mix evenly, and obtain an antimicrobial solution;

S2: Place the polycaprolactone nanofiber membrane on a flat table with a temperature of 25°C and a humidity of 50%, and use a spray gun to evenly spray the antibacterial solution on one side of the fiber membrane. The spraying distance is 20 cm and the spraying pressure is 0.2 MPa. Ensure that the solution completely penetrates between the fibers. Place the sprayed fiber membrane in an oven and dry it at 60°C for 2 hours to firmly attach the antibacterial components to the fibers.

S3: Disperse the nano activated carbon in the acrylic adhesive and stir evenly to form an anti-odor coating solution. Use the dipping method to immerse the polycaprolactone nanofiber membrane in the anti-odor coating solution at a speed of 1 m/min to ensure that the other side of the fiber membrane is evenly coated with the anti-odor coating. The dipping time is 5 minutes. Put the impregnated fiber membrane into the oven again and dry it at 80°C for 1 hour to firmly fix the anti-odor coating.

S4: Sprinkle nano-silicon dioxide powder on the fiber membrane coated with the antibacterial layer and the deodorizing layer, with a powder spreading amount of 1g/ ^m2 , and then compound it with the fiber membrane by hot pressing, with a hot pressing temperature of 120℃, a pressure of 2MPa, and a time of 5 minutes to enhance the mechanical properties and wear resistance of the material, mix the nano-scale antibacterial agent carrier with the antibacterial agent, stir at a stirring speed of 1000rpm for 30 minutes to fully absorb the antibacterial agent, and use a syringe to inject the nano-scale antibacterial agent carrier containing the antibacterial agent into the interior of the fiber membrane to ensure that the antibacterial agent can be slowly released in the fiber membrane to achieve a long-lasting antibacterial effect;

S5: The hydrophilic polymer solution is evenly coated on the outer surface of the fiber membrane by spin coating at a speed of 3000 rpm to form a hydrophilic nano coating, and the coated fiber membrane is dried at room temperature for 24 hours, and then heat treated at a temperature of 100° C. for 1 hour, and then heat treated to enhance the adhesion of the coating;

S6: Mix the biocompatible nano-additives with the fiber membrane and stir them at 2000 rpm using a high-speed mixer for 10 minutes to ensure that the additives are evenly distributed in the fiber membrane. Finally, cut and sew the prepared antibacterial and deodorizing nano-composite protective clothing material in a clean environment to make the desired clothing products.

Where, the deposition thickness of the coating on the fiber membrane is set to D, then:

D＝K\cdot\frac{V_{coat}}{A_{membrane}}

Among them, K is the coating deposition coefficient, which is related to the viscosity of the coating solution and the liquid absorption of the fiber membrane, V_: the volume of the coating solution, A_: the area of the fiber membrane, the unit of V_{coat} is milliliter, and the unit of A_{membrane} is square centimeter.

Comparative Example 1

An antibacterial and deodorizing nano-composite protective clothing material comprises the following components by weight: 40 parts of polycaprolactone nanofibers, 15 parts of nano-titanium dioxide, 10 parts of nano-activated carbon, 10 parts of nano-silicon dioxide, 10 parts of nano-zinc oxide, 5 parts of nano-level antibacterial agent carriers, 5 parts of hydrophilic nano-coatings, and 4 parts of biocompatible nano-additives.

Among them, the average diameter of polycaprolactone nanofibers is 80 nanometers, the particle size of nano titanium dioxide is controlled at 20 nanometers, the specific surface area of nano activated carbon is ^2000m2 /g, the particle size of nano silicon dioxide is within the range of 50 nanometers, the particle size of nano zinc oxide is controlled within the range of 50 nanometers, the particle size of nano-scale antibacterial agent carrier is within the range of 50 nanometers, the particle size of biocompatible nano additive is within the range of 40 nanometers, the nano-scale antibacterial agent carrier is mesoporous silica nanoparticles, the hydrophilic nano coating is a nano coating based on polyethylene glycol, and the biocompatible nano additive adopts hydroxyapatite nanoparticles.

The comparative example also provides a method for preparing an antibacterial and deodorizing nanocomposite protective clothing material, which is characterized by comprising the following steps:

S1: Add nano titanium dioxide and nano zinc oxide into deionized water respectively, increase the stirring speed to 500 rpm, and stir again to mix evenly to obtain an antibacterial solution;

S2: Place the polycaprolactone nanofiber membrane on a flat table with a temperature of 25°C and a humidity of 50%, and use a spray gun to evenly spray the antibacterial solution on one side of the fiber membrane. The spraying distance is 20 cm and the spraying pressure is 0.2 MPa. Ensure that the solution completely penetrates between the fibers. Place the sprayed fiber membrane in an oven and dry it at 60°C for 2 hours to firmly attach the antibacterial components to the fibers.

S3: Disperse the nano activated carbon in the acrylic adhesive and stir evenly to form an anti-odor coating solution. Use the dipping method to immerse the polycaprolactone nanofiber membrane in the anti-odor coating solution at a speed of 1 m/min to ensure that the other side of the fiber membrane is evenly coated with the anti-odor coating. The dipping time is 5 minutes. Put the impregnated fiber membrane into the oven again and dry it at 80°C for 1 hour to firmly fix the anti-odor coating.

S4: Sprinkle nano-silicon dioxide powder on the fiber membrane coated with the antibacterial layer and the deodorizing layer, with a powder spreading amount of 1g/ ^m2 , and then compound it with the fiber membrane by hot pressing, with a hot pressing temperature of 120℃, a pressure of 2MPa, and a time of 5 minutes to enhance the mechanical properties and wear resistance of the material, mix the nano-scale antibacterial agent carrier with the antibacterial agent, stir at a stirring speed of 1000rpm for 30 minutes to fully absorb the antibacterial agent, and use a syringe to inject the nano-scale antibacterial agent carrier containing the antibacterial agent into the interior of the fiber membrane to ensure that the antibacterial agent can be slowly released in the fiber membrane to achieve a long-lasting antibacterial effect;

S5: The hydrophilic polymer solution is evenly coated on the outer surface of the fiber membrane by spin coating at a speed of 3000 rpm to form a hydrophilic nano coating, and the coated fiber membrane is dried at room temperature for 24 hours, and then heat treated at a temperature of 100° C. for 1 hour, and then heat treated to enhance the adhesion of the coating;

S6: Mix the biocompatible nano-additives with the fiber membrane and stir them at 2000 rpm using a high-speed mixer for 10 minutes to ensure that the additives are evenly distributed in the fiber membrane. Finally, cut and sew the prepared antibacterial and deodorizing nano-composite protective clothing material in a clean environment to make the desired clothing products.

Where, the deposition thickness of the coating on the fiber membrane is set to D, then:

D＝K\cdot\frac{V_{coat}}{A_{membrane}}

Among them, K is the coating deposition coefficient, which is related to the viscosity of the coating solution and the liquid absorption of the fiber membrane, V_: the volume of the coating solution, A_: the area of the fiber membrane, the unit of V_{coat} is milliliter, and the unit of A_{membrane} is square centimeter.

Comparative Example 2

An antibacterial and deodorizing nano-composite protective clothing material comprises the following components by weight: 40 parts of polycaprolactone nanofibers, 10 parts of silver nanowires, 15 parts of antibacterial peptide nanostructures, 15 parts of nano-titanium dioxide, 10 parts of nano-silicon dioxide, 10 parts of nano-zinc oxide, 5 parts of nano-scale antibacterial agent carriers, 5 parts of hydrophilic nano-coatings, and 4 parts of biocompatible nano-additives.

Among them, the average diameter of polycaprolactone nanofibers is 80 nanometers, the average diameter of silver nanowires is 60 nanometers, the length is controlled at 30 microns, the molecular weight of the antimicrobial peptide nanostructure is 2000 Daltons, the particle size of nano titanium dioxide is controlled at 20 nanometers, the particle size of nano silicon dioxide is within 50 nanometers, the particle size of nano zinc oxide is controlled within 50 nanometers, the particle size of the nano-scale antibacterial agent carrier is within 50 nanometers, the particle size of the biocompatible nano-additive is within 40 nanometers, the nano-scale antibacterial agent carrier is mesoporous silica nanoparticles, the hydrophilic nano-coating is a nano-coating based on polyethylene glycol, and the biocompatible nano-additive uses hydroxyapatite nanoparticles.

The comparative example also provides a method for preparing an antibacterial and deodorizing nanocomposite protective clothing material, which is characterized by comprising the following steps:

S1: Disperse silver nanowires in an ethanol solution, stir at a frequency of 40kHz for 30 minutes using an ultrasonic stirrer to ensure uniform dispersion of the silver nanowires, add antimicrobial peptide nanostructures into deionized water, adjust the pH value to 7.0, control the stirring speed at 300rpm, stir until completely dissolved, add nano-titanium dioxide and nano-zinc oxide to the antimicrobial peptide solution, increase the stirring speed to 500rpm, stir again to mix evenly, and obtain an antimicrobial solution;

S2: Place the polycaprolactone nanofiber membrane on a flat table with a temperature of 25°C and a humidity of 50%, and use a spray gun to evenly spray the antibacterial solution on one side of the fiber membrane. The spraying distance is 20 cm and the spraying pressure is 0.2 MPa. Ensure that the solution completely penetrates between the fibers. Place the sprayed fiber membrane in an oven and dry it at 60°C for 2 hours to firmly attach the antibacterial components to the fibers.

S3: Sprinkle nano-silicon dioxide powder on the fiber membrane coated with the antibacterial layer, with a powder spreading amount of 1g/ ^m2 , and then compound it with the fiber membrane by hot pressing, with a hot pressing temperature of 120℃, a pressure of 2MPa, and a time of 5 minutes to enhance the mechanical properties and wear resistance of the material, mix the nano-scale antibacterial agent carrier with the antibacterial agent, stir at a stirring speed of 1000rpm for 30 minutes to fully absorb the antibacterial agent, and use a syringe to inject the nano-scale antibacterial agent carrier containing the antibacterial agent into the interior of the fiber membrane to ensure that the antibacterial agent can be slowly released in the fiber membrane to achieve a long-lasting antibacterial effect;

S4: The hydrophilic polymer solution is evenly coated on the outer surface of the fiber membrane by spin coating at a speed of 3000 rpm to form a hydrophilic nano coating, and the coated fiber membrane is dried at room temperature for 24 hours, and then heat treated at a temperature of 100° C. for 1 hour to enhance the adhesion of the coating;

S5: Mix the biocompatible nano-additives with the fiber membrane and stir them at 2000 rpm using a high-speed mixer for 10 minutes to ensure that the additives are evenly distributed in the fiber membrane. Finally, cut and sew the prepared antibacterial and deodorizing nano-composite protective clothing material in a clean environment to make the desired clothing products.

Where, the deposition thickness of the coating on the fiber membrane is set to D, then:

D＝K\cdot\frac{V_{coat}}{A_{membrane}}

Among them, K is the coating deposition coefficient, which is related to the viscosity of the coating solution and the liquid absorption of the fiber membrane, V_: the volume of the coating solution, A_: the area of the fiber membrane, the unit of V_{coat} is milliliter, and the unit of A_{membrane} is square centimeter.

Comparative Example 3

An antibacterial and deodorizing nano-composite protective clothing material comprises the following components by weight: 40 parts of polycaprolactone nanofibers, 10 parts of silver nanowires, 15 parts of antimicrobial peptide nanostructures, 10 parts of nano-activated carbon, 10 parts of nano-silicon dioxide, 10 parts of nano-zinc oxide, 5 parts of nano-scale antibacterial agent carriers, 5 parts of hydrophilic nano-coatings, and 4 parts of biocompatible nano-additives.

Among them, the average diameter of polycaprolactone nanofibers is 80 nanometers, the average diameter of silver nanowires is 60 nanometers, the length is controlled at 30 microns, the molecular weight of the antimicrobial peptide nanostructure is 2000 Daltons, the specific surface area of nano activated carbon is ^2000m2 /g, the particle size of nano silicon dioxide is within the range of 50 nanometers, the particle size of nano zinc oxide is controlled within the range of 50 nanometers, the particle size of the nano-scale antimicrobial agent carrier is within the range of 50 nanometers, the particle size of the biocompatible nano additive is within the range of 40 nanometers, the nano-scale antimicrobial agent carrier is mesoporous silica nanoparticles, the hydrophilic nano coating is a nano coating based on polyethylene glycol, and the biocompatible nano additive uses hydroxyapatite nanoparticles.

The comparative example also provides a method for preparing an antibacterial and deodorizing nanocomposite protective clothing material, which is characterized by comprising the following steps:

S1: Disperse silver nanowires in an ethanol solution, stir at a frequency of 40kHz for 30 minutes using an ultrasonic stirrer to ensure that the silver nanowires are evenly dispersed, add antimicrobial peptide nanostructures into deionized water, adjust the pH value to 7.0, control the stirring speed at 300rpm, stir until completely dissolved, add nano zinc oxide to the antimicrobial peptide solution, increase the stirring speed to 500rpm, stir again to mix evenly, and obtain an antimicrobial solution;

S2: Place the polycaprolactone nanofiber membrane on a flat table with a temperature of 25°C and a humidity of 50%, and use a spray gun to evenly spray the antibacterial solution on one side of the fiber membrane. The spraying distance is 20 cm and the spraying pressure is 0.2 MPa. Ensure that the solution completely penetrates between the fibers. Place the sprayed fiber membrane in an oven and dry it at 60°C for 2 hours to firmly attach the antibacterial components to the fibers.

S3: Disperse the nano activated carbon in the acrylic adhesive and stir evenly to form an anti-odor coating solution. Use the dipping method to immerse the polycaprolactone nanofiber membrane in the anti-odor coating solution at a speed of 1 m/min to ensure that the other side of the fiber membrane is evenly coated with the anti-odor coating. The dipping time is 5 minutes. Put the impregnated fiber membrane into the oven again and dry it at 80°C for 1 hour to firmly fix the anti-odor coating.

S4: Sprinkle nano-silicon dioxide powder on the fiber membrane coated with the antibacterial layer and the deodorizing layer, with a powder spreading amount of 1g/ ^m2 , and then compound it with the fiber membrane by hot pressing, with a hot pressing temperature of 120℃, a pressure of 2MPa, and a time of 5 minutes to enhance the mechanical properties and wear resistance of the material, mix the nano-scale antibacterial agent carrier with the antibacterial agent, stir at a stirring speed of 1000rpm for 30 minutes to fully absorb the antibacterial agent, and use a syringe to inject the nano-scale antibacterial agent carrier containing the antibacterial agent into the interior of the fiber membrane to ensure that the antibacterial agent can be slowly released in the fiber membrane to achieve a long-lasting antibacterial effect;

S5: The hydrophilic polymer solution is evenly coated on the outer surface of the fiber membrane by spin coating at a speed of 3000 rpm to form a hydrophilic nano coating, and the coated fiber membrane is dried at room temperature for 24 hours, and then heat treated at a temperature of 100° C. for 1 hour, and then heat treated to enhance the adhesion of the coating;

S6: Mix the biocompatible nano-additives with the fiber membrane and stir them at 2000 rpm using a high-speed mixer for 10 minutes to ensure that the additives are evenly distributed in the fiber membrane. Finally, cut and sew the prepared antibacterial and deodorizing nano-composite protective clothing material in a clean environment to make the desired clothing products.

Where, the deposition thickness of the coating on the fiber membrane is set to D, then:

D＝K\cdot\frac{V_{coat}}{A_{membrane}}

Among them, K is the coating deposition coefficient, which is related to the viscosity of the coating solution and the liquid absorption of the fiber membrane, V_: the volume of the coating solution, A_: the area of the fiber membrane, the unit of V_{coat} is milliliter, and the unit of A_{membrane} is square centimeter.

Comparative Example 4

A traditional protective clothing material without nano ingredients.

The composite protective clothing materials prepared in the above-mentioned Examples 1 to 4 and Comparative Examples 1 to 4 were tested, and the test standards were:

GB/T 20944.3-2008 "Evaluation of antimicrobial properties of textiles Part 3: Oscillation method"

Detection method: Inoculate bacteria into the sample and the control sample respectively. After a certain period of shaking culture, determine the number of live bacteria in the sample and calculate the antibacterial rate.

GB/T 18883-2002 "Indoor Air Quality Standard"

Deodorization performance can be evaluated by measuring the material's ability to adsorb or decompose specific odor components. This usually involves exposing the material to an environment containing the odor component and then measuring the change in the concentration of the odor component in the environment.

GB/T 30158-2013 "Evaluation of UV protection performance of textiles"

For protective clothing materials containing nano zinc oxide and other ingredients, this method can be used to measure their UV protection performance. This method uses a UV spectrophotometer to measure the UV transmittance of the sample and calculates the UV protection factor (UPF) and UVA transmittance based on it.

GB/T 3921-2008 Textiles - Tests for colour fastness - Colour fastness to washing

Test the adhesion and washing resistance of the coating. By simulating the washing process, observe whether the coating falls off or changes color to evaluate its washing fastness.

The results are shown in Table 1:

Table 1

Through the above Table 1, it can be directly obtained that in Examples 1 to 4, the final composite protective clothing materials showed a high level of antibacterial rate after testing, ranging from 98.1% to 98.5%, showing good antibacterial performance; in terms of odor concentration reduction rate, these embodiments also performed well, all at 85% and above, indicating that the materials have good anti-odor effects; the ultraviolet protection factor is UPF 50+, indicating that these embodiments provide excellent ultraviolet protection; in terms of color fastness to washing, all embodiments reached level 4-5 (excellent), indicating that the material can still maintain good color and performance after multiple washings.

1-2, in Example 4 and Comparative Example 1 where other conditions are the same, the silver nanowires and antimicrobial peptide nanostructures are not used in Comparative Example 1. After testing, the final composite protective clothing material obtained has a lower antibacterial rate of 80.8% in Comparative Example 1, which is significantly lower than that in the example, but still has a certain antibacterial effect. The odor concentration reduction rate is 71%, which is also slightly lower than that in the example. The ultraviolet protection factor and color fastness to washing are comparable to those in the example.

In comparative example 2, the use of nano-activated carbon was removed. After testing, the antibacterial rate of the composite protective clothing material obtained in comparative example 2 was relatively high, at 93.4%, but the odor concentration reduction rate was only 50%, showing a significant decrease in the anti-odor performance. Other performance parameters were comparable to those of the embodiment;

The material of comparative example 3 does not contain nano titanium dioxide. After testing, the antibacterial rate of the composite protective clothing material obtained in comparative example 3 is 92.5%, and the odor concentration reduction rate is 75%, but the ultraviolet protection factor is reduced to UPF 30+, and the color fastness to washing is level 3-4 (general), indicating that it is insufficient in terms of ultraviolet protection and washing resistance.

Comparative Example 4 is a traditional protective clothing material without nano components. After testing, the final protective clothing material has significantly lower performance than the embodiments and other comparative examples. The antibacterial rate is only 54.3%, the odor concentration reduction rate is 36%, the ultraviolet protection factor is UPF 10+, and the color fastness to washing is level 3 (general). This shows that the performance of traditional protective clothing materials needs to be improved in all aspects.

The present invention achieves significant improvements in antibacterial, anti-odor, UV protection and mechanical properties of protective clothing materials through the use of nanotechnology.

Through the synergistic effect of silver nanowires, antimicrobial peptide nanostructures, and nano-titanium dioxide, the protective clothing material exhibits excellent antibacterial effects. Silver nanowires can destroy bacterial cell membranes, while antimicrobial peptide nanostructures increase the contact area with bacteria and improve antibacterial efficiency. The photocatalytic activity of nano-titanium dioxide further enhances the antibacterial ability;

As a highly efficient adsorbent, nano-activated carbon can quickly adsorb and remove odor molecules, significantly improving the anti-odor performance of protective clothing. This greatly improves the wearing experience for workers who need to wear protective clothing for a long time;

The addition of nano zinc oxide enables protective clothing to absorb ultraviolet rays, thereby effectively protecting the skin from ultraviolet damage. This is especially important when working or doing activities outdoors;

Through the enhancement of nano-silicon dioxide, the mechanical properties and wear resistance of protective clothing materials have been significantly improved. This means that the protective clothing is more durable during use and can withstand longer periods of time and harsher environments;

Through the use of nano-scale antimicrobial agent carriers, the antimicrobial agent can be slowly released in the fiber membrane, thereby achieving a long-lasting antimicrobial effect. This ensures that the protective clothing can maintain excellent antimicrobial properties throughout its entire use cycle;

The presence of hydrophilic nano-coating makes the surface of protective clothing easier to clean and reduces the adhesion of stains and bacteria. This not only helps to keep the protective clothing clean and hygienic, but also reduces maintenance costs;

The addition of biocompatible nano-additives reduces skin irritation and allergic reactions and improves wearing comfort. Polycaprolactone nanofibers enhance the breathability and comfort of the material, making the protective clothing comfortable while providing protection.

The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims (10)

1. An antibacterial deodorant nano composite protective clothing material is characterized by comprising the following components in parts by weight: 30-40 parts of polycaprolactone nanofiber, 5-10 parts of silver nanowire, 10-15 parts of antibacterial peptide nanostructure, 10-15 parts of nano titanium dioxide, 5-10 parts of nano activated carbon, 5-10 parts of nano silicon dioxide, 5-10 parts of nano zinc oxide, 2-5 parts of nanoscale antibacterial agent carrier, 3-5 parts of hydrophilic nano coating and 2-4 parts of biocompatible nano additive.

2. The antibacterial and deodorant nanocomposite protective clothing material according to claim 1, characterized by comprising the following components in parts by weight: 35 parts of polycaprolactone nanofiber, 6 parts of silver nanowire, 12 parts of antibacterial peptide nanostructure, 13 parts of nano titanium dioxide, 7 parts of nano active carbon, 8 parts of nano silicon dioxide, 7 parts of nano zinc oxide, 4 parts of nano antibacterial agent carrier, 4 parts of hydrophilic nano coating and 3 parts of biocompatible nano additive.

3. The antibacterial and deodorant nanocomposite protective clothing material according to claim 1 or 2, wherein the average diameter of the polycaprolactone nanofibers is 10 to 80 nanometers, the average diameter of the silver nanowires is 40 to 60 nanometers, the length is controlled to 20 to 30 micrometers, the molecular weight of the antibacterial peptide nanostructures is 1000 to 2000 daltons, and the particle size of the nano titanium dioxide is controlled to 10 to 20 nanometers.

4. The antibacterial and deodorant nanocomposite protective clothing material according to claim 1 or 2, wherein the specific surface area of the nano activated carbon is 1500-2000 m ²/g, the particle size of the nano silica is 20-50 nm, the particle size of the nano zinc oxide is controlled to be 30-50 nm, the particle size of the nano antibacterial agent carrier is 10-50 nm, and the particle size of the biocompatible nano additive is 3-40 nm.

5. The antibacterial and deodorant nanocomposite protective clothing material according to claim 1, wherein the nanoscale antibacterial agent carrier is mesoporous silica nanoparticles, the hydrophilic nanocoating is a polyethylene glycol-based nanocoating, and the biocompatible nano-additive is hydroxyapatite nanoparticles.

6. A method for preparing the antibacterial and deodorant nanocomposite protective clothing material according to any one of claims 1 to 5, characterized by comprising the following steps:

s1: dispersing silver nanowires in an ethanol solution, stirring for 30 minutes by using an ultrasonic stirrer to ensure that the silver nanowires are uniformly dispersed, adding antibacterial peptide nanostructures into deionized water, stirring until the antibacterial peptide nanostructures are completely dissolved, respectively adding nano titanium dioxide and nano zinc oxide into the antibacterial peptide solution, and stirring and mixing the mixture again uniformly to obtain an antibacterial solution;

S2: placing a polycaprolactone nanofiber membrane on a flat table top, uniformly spraying an antibacterial solution on one side of the fiber membrane by using a spray gun to ensure that the solution completely permeates between fibers, placing the sprayed fiber membrane into an oven, and drying at 60 ℃ for 2 hours to ensure that the antibacterial component is firmly attached to the fibers;

S3: dispersing nano activated carbon in an acrylic ester adhesive, uniformly stirring to form a deodorizing coating solution, immersing a polycaprolactone nanofiber membrane into the deodorizing coating solution at a speed of 1m/min by using an immersion method, ensuring that the deodorizing coating is uniformly coated on the other side of the fiber membrane, wherein the immersion time is 5 minutes, putting the immersed fiber membrane into an oven again, and drying at 80 ℃ for 1 hour to firmly fix the deodorizing coating;

S4: the preparation method comprises the steps of scattering nano silicon dioxide powder on a fiber membrane coated with an antibacterial layer and a deodorizing layer, wherein the scattering amount is 1g/m ², then compounding the nano silicon dioxide powder with the fiber membrane through a hot pressing method, wherein the hot pressing temperature is 120 ℃, the pressure is 2MPa, the time is 5 minutes, the mechanical property and the wear resistance of the material are enhanced, mixing a nano antibacterial agent carrier with the antibacterial agent, stirring for 30 minutes at the stirring speed of 1000rpm, enabling the nano antibacterial agent carrier to fully adsorb the antibacterial agent, and injecting the nano antibacterial agent carrier containing the antibacterial agent into the fiber membrane through an injector, so that the antibacterial agent can be slowly released in the fiber membrane, and a long-acting antibacterial effect is realized;

S5: uniformly coating a hydrophilic polymer solution on the outer surface of a fiber membrane by a spin coating method to form a hydrophilic nano coating, airing the coated fiber membrane at room temperature, and then performing heat treatment to enhance the adhesive force of the coating;

S6: mixing the biocompatible nano additive with the fiber membrane, stirring at 2000rpm for 10 minutes by using a high-speed stirrer to ensure that the additive is uniformly distributed in the fiber membrane, and finally cutting and sewing the prepared antibacterial and deodorant nano composite protective clothing material in a clean environment to prepare the required clothing product.

7. The method for preparing the antibacterial and deodorant nano composite protective clothing material according to claim 6, wherein in the step S1, silver nanowires are dispersed in ethanol solution, stirring is performed for 30 minutes at a frequency of 40kHz by using an ultrasonic stirrer to ensure that the silver nanowires are uniformly dispersed, the antibacterial peptide nanostructure is added into deionized water, the pH value is adjusted to 7.0, the stirring speed is controlled to 300rpm, stirring is performed until the antibacterial peptide nanostructure is completely dissolved, nano titanium dioxide and nano zinc oxide are respectively added into the antibacterial peptide solution, the stirring speed is increased to 500rpm, and stirring and mixing are performed again uniformly to obtain the antibacterial solution.

8. The method for preparing the antibacterial and deodorant nano composite protective clothing material according to claim 6, wherein in the step S2, a polycaprolactone nanofiber membrane is placed on a flat table surface with the temperature of 25 ℃ and the humidity of 50%, an antibacterial solution is uniformly sprayed on one side of the nanofiber membrane by using a spray gun, the spraying distance is 20cm, the spraying pressure is 0.2MPa, the solution is ensured to completely permeate between the fibers, the sprayed fiber membrane is placed in an oven, and the fiber membrane is dried at the temperature of 60 ℃ for 2 hours, so that antibacterial components are firmly attached to the fibers.

9. The method for preparing antibacterial and deodorant nano composite protective clothing according to claim 6, wherein in S5, hydrophilic polymer solution is uniformly coated on the outer surface of the fiber membrane by spin coating at 3000rpm to form hydrophilic nano coating, the coated fiber membrane is dried for 24 hours at room temperature, and then heat treatment is performed for 1 hour at 100 ℃, and then heat treatment is performed to enhance the adhesive force of the coating.

10. The method for preparing the antibacterial and deodorant nano composite protective clothing material according to claim 6, wherein the deposition thickness of the coating on the fiber membrane is set as D:

D＝K\cdot\frac{V_{coat}}{A_{membrane}}

Wherein, K: coating deposition coefficient, related to viscosity of coating solution and liquid absorption of fibrous film, v_: volume of coating solution, a_: the area of the fibrous membrane, V_ { coat } is in milliliters and A_ { membrane } is in square centimeters.