CN117166113A - Antibacterial skin-friendly fabric - Google Patents

Abstract

The invention relates to the technical field of fabric preparation and discloses an antibacterial and skin-friendly fabric. The antibacterial and skin-friendly fabric is made of spandex fiber prepared using antioxidant bamboo charcoal micropowder and functionalized silica as fillers and then woven into it; wherein, the antibacterial and skin-friendly fabric is Oxidized bamboo charcoal powder is produced by amination of bamboo charcoal powder and then grafted with 3-(3,5-di-tert-butyl-4-hydroxyphenyl) propionic acid; functionalized silica is produced by modifying the surface of nano-silica. Prepared by grafting imidazole-1-acetic acid. The fabric woven by the invention has the characteristics of good hygroscopicity, perspiration and breathability, softness and skin-friendlyness, and high tensile strength. It has excellent wearing comfort and easy processing performance. The fabric also has excellent sterilization and mite removal effect, and is durable and durable. It has anti-aging and anti-static properties and can function stably for a long time. It has a wide range of applications.

Description

An antibacterial and skin-friendly fabric

Technical field

The invention relates to the technical field of fabric preparation, and in particular to an antibacterial and skin-friendly fabric.

Background technique

Throughout history, fabrics have always been an indispensable part of human life. It not only determines the comfort and beauty of clothing, but also reflects the technological progress and cultural development of the times. In the past, fabrics were mostly woven from natural fibers. Nowadays, chemical fiber fabrics also occupy a place. Among them, spandex fabric has become the best choice for making underwear due to its unique high elasticity and softness. However, underwear can easily be contaminated with sweat if it comes into direct contact with the human body. If it is not discharged in time, it will stick to the surface of the skin, affecting comfort, and a humid environment is more likely to cause bacteria and mites to breed, thus affecting the health of the skin. In addition to contact with sweat, long-term friction can also cause static electricity. The production of clothes causes the clothes to stick closely to the body and affects the appearance. The existence of static electricity can also easily cause bacteria to accumulate on the surface of clothes. Therefore, this requires spandex fabrics to have the properties of breathability, moisture absorption, antibacterial and mite removal, and antistatic properties. Moreover, because the molecules in spandex fabrics There are hydrogen bonds and are easily deformed by oxidation. Therefore, spandex fabrics also need to have antioxidant properties.

The patent with publication number CN112266462B discloses an aging-resistant elastic fabric and its preparation method. The patent modifies spandex and introduces polyether polyol starting from pentaerythritol into its structure to enhance the elasticity of the prepared spandex fiber. The degree of cross-linking makes the molecular structure of spandex more stable and improves the aging resistance of spandex fiber. At the same time, adding triethylene glycol makes the prepared spandex fiber also have excellent elasticity. Although this patent can improve the aging resistance of spandex, However, it does not have antibacterial and mite removal capabilities and antistatic effects. When used as underwear, it can easily cause bacteria to accumulate and affect people's health.

Contents of the invention

The purpose of the present invention is to provide an antibacterial and skin-friendly fabric that solves the following technical problems: (1) The traditional spandex fabric has poor oxidation resistance and the spandex fiber is easily aged and broken when used for a long time; (2) The spandex fabric is easily The generation of static electricity leads to the adhesion of bacteria and the breeding of mites; (3) The problem of poor breathability and moisture absorption of spandex fabrics and low comfort.

The object of the present invention can be achieved through the following technical solutions:

An antibacterial and skin-friendly fabric is made from spandex fiber prepared by using antioxidant bamboo charcoal micropowder and functionalized silica as fillers and then woven into it; the antioxidant bamboo charcoal micropowder is made by amination of bamboo charcoal micropowder and then grafted with 3-(3 , 5-di-tert-butyl-4-hydroxyphenyl)propionic acid is prepared; the functionalized silica is prepared by modifying the surface of nano-silica and then grafting imidazole-1-acetic acid.

Further, the preparation method of the antioxidant bamboo charcoal micropowder includes the following steps:

(1) Place the bamboo charcoal powder in the plasma treatment chamber, pass in ammonia gas for 10-15 minutes, and then take it out to obtain the aminated bamboo charcoal powder;

(2) Place aminated bamboo charcoal powder in ethanol, disperse it ultrasonically for 5-10 minutes, add 3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionic acid and composite catalyst, and raise the temperature to 50-70 React at ℃ for 5-8 hours, filter, wash, and vacuum dry to obtain antioxidant bamboo charcoal powder.

Through the above technical solution, ammonia gas is used in the plasma treatment chamber to aminate the surface of bamboo charcoal powder. Under the action of the composite catalyst, the amino groups on the surface of bamboo charcoal powder react with 3-(3,5-di-tert-butyl-4-hydroxyphenyl). ) The carboxyl group in the propionic acid structure reacts to obtain antioxidant bamboo charcoal powder. The surface of this antioxidant bamboo charcoal powder is grafted with imine groups to enable it to be evenly dispersed in spandex. At the same time, it is also grafted with hindered substances with antioxidant effects. The phenol group can reduce the possibility of breakage of spandex due to aging during long-term use, extending the service life of spandex. Moreover, this antioxidant bamboo charcoal powder also has a rich pore structure, can absorb and evaporate a large amount of water, and has good It has moisture absorption and perspiration effect, and the bambooquinone factor in its structure has a certain antibacterial and mite removal effect, which can effectively kill bacteria and mites, and the ingredients are safe and will not cause irritation to the skin.

Further, in step (1), the power of the plasma processing chamber is 100-150W, and the atmospheric pressure is 2-5Pa.

Further, in step (2), the composite catalyst is 4-dimethylaminopyridine and dicyclohexylcarbodiimide with a mass ratio of 3-6:1-2.

Further, the preparation method of functionalized silica includes the following steps:

S1: Place the nanosilica in deionized water, disperse it ultrasonically for 15-20 minutes, add chloroethyl isocyanate and catalyst, raise the temperature to 65-75°C, react for 3-5 hours, filter, wash, and vacuum dry to obtain the modified silicon dioxide. silicon oxide;

S2: Place the modified silica in deionized water, add imidazole-1-acetic acid and mix evenly, reflux and react, lower to room temperature, filter, wash, and vacuum dry to obtain functionalized silica.

Through the above technical solution, under the action of a catalyst, the isocyanate group in the chloroethyl isocyanate structure is used to modify the silica surface to obtain modified silica, and then the active chlorine on the modified silica surface is combined with The imidazole group in the imidazole-1-acetic acid structure undergoes a quaternization reaction to obtain functionalized silica. This functionalized silica has active carboxyl groups on its surface and can be evenly dispersed in the spandex matrix, solving the problem of functionalization. The problem of easy agglomeration of silica in the matrix makes it possible to enhance the mechanical properties of spandex and improve the tensile strength of spandex. The imidazolyl quaternary ammonium salt formed on the surface of this functionalized silica has excellent antibacterial properties and is similar to spandex. After combining, it can significantly improve the antibacterial ability and softness of spandex. Antibacterial substances will not precipitate even when used for a long time, and has a long-lasting antibacterial effect. At the same time, it can form an adsorption film on the surface of spandex, which is conducive to the dissipation of static electricity, thus making the preparation The fabric also has excellent antistatic effect, which can prevent the accumulation of bacteria due to static adsorption and adverse effects on the human body.

Further, in step S1, the catalyst is any one of stannous octoate and dibutyltin dilaurate.

Further, in step S2, the reflux reaction temperature is 80-90°C and the time is 24-48h.

Further, the preparation method of the antibacterial skin-friendly fabric includes the following steps:

Step 1. Mix toluene diisocyanate and polytetrahydrofuran ether glycol, add nitrogen, add dibutyltin dilaurate, stir until evenly mixed, raise the temperature to 45-55°C, react for 1-2 hours, and add 1,4-butanediol. , continue to raise the temperature to 70-80℃ and react for 2-3h, then cool to 40-45℃ and add triethylamine, functionalized silica and antioxidant bamboo charcoal powder. After reacting for 1-3h, add deionized water, stir thoroughly and let it cool naturally. After defoaming, polyurethane is obtained;

Step 2: Add polyurethane to N,N-dimethylacetamide, stir thoroughly and let it stand to form a spinning liquid. Control the flow rate of the spinning liquid and perform wet spinning. After the spinning liquid passes through the spinneret, add it to distilled water. In the coagulation bath, and then through stretching, traction, drying and winding, spandex fiber is obtained;

Step 3: The spandex fiber is twisted, fixed, warped, and drawn on the machine for weaving, and the fabric is obtained after completion.

Further, in step two, the flow rate of the spinning solution is 0.4-0.8ml/h.

Beneficial effects of the present invention:

In the present invention, spandex fibers are prepared by preparing antioxidant bamboo charcoal micropowder and functionalized silica as fillers and woven into fabrics. The woven fabrics have the characteristics of good hygroscopicity, perspiration wicking, breathability, softness and skin-friendlyness, and high tensile strength, and have extremely high tensile strength. It has excellent wearing comfort and easy processing properties. The fabric also has excellent sterilization and mite removal effects, aging resistance and antistatic properties. It can function stably for a long time and has a wide range of applications.

Of course, any product implementing the present invention does not necessarily need to achieve all the above-mentioned advantages at the same time.

Description of drawings

In order to explain the technical solutions of the embodiments of the present invention more clearly, the drawings needed to describe the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can also be obtained based on these drawings without exerting creative efforts.

Figure 1 is an infrared spectrum of the antioxidant bamboo charcoal micropowder in Example 1 of the present invention;

Figure 2 is a graph of thermal weight loss curves of nanosilica, modified silica, and functionalized silica in Example 1 of the present invention.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present invention.

Example 1

1. Preparation of antioxidant bamboo charcoal micropowder

(1) Place 2g of bamboo charcoal powder in a plasma treatment chamber with a power of 100W and an atmospheric pressure of 2Pa, and introduce ammonia gas for 10 minutes. After taking it out, aminated bamboo charcoal powder is obtained;

(2) Place 2g of aminated bamboo charcoal powder in 80ml of ethanol, disperse it ultrasonically for 5 minutes, then add 1.5g of 3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionic acid and 0.06g of di- Cyclohexylcarbodiimide and 0.02g of 4-dimethylaminopyridine were heated to 50°C to react for 5 hours, followed by filtration, washing, and vacuum drying to obtain antioxidant bamboo charcoal micropowder.

The antioxidant bamboo charcoal micropowder was characterized by infrared spectrum. As shown in Figure 1, the absorption peak of the nitrogen-hydrogen bond in the imine group appeared at 3392cm ^-1 , the absorption peak of the hydroxyl group appeared at 3245cm ^-1 , and the absorption peak of benzene appeared at 3021cm ^-1 The absorption peak of the carbon-hydrogen bond in the ring is the absorption peak of the carbon-hydrogen bond in the methyl group at 2914cm ^-1 , the absorption peak of the carbon-oxygen double bond in the ester group is at 1716cm ^-1 , and the absorption peak of the imine group and the ester group is The appearance indicates that the amino group on the surface of aminated bamboo charcoal powder reacted with the carboxyl group in the 3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionic acid structure.

2. Preparation of functionalized silica

S1: Place 1.5g nanometer silica in 100ml deionized water, disperse it ultrasonically for 15 minutes, add 1g chloroethyl isocyanate and 0.1g stannous octoate, raise the temperature to 65°C, react for 3 hours, filter, wash and vacuum dry to obtain modified silica;

S2: Place 2g modified silica in 150ml deionized water, add 1g imidazole-1-acetic acid and mix evenly, raise the temperature to 80°C and reflux for 24 hours, lower to room temperature, filter, wash and vacuum dry to obtain functionalization Silica.

Nano-silica, modified silica, and functionalized silica were characterized by thermogravimetric analysis. As can be seen from Figure 2, the final mass retention rate of nano-silica at a high temperature of 800°C was 98.2%. Part of the loss is due to the evaporation of crystal water in its structure; the final quality retention rate of modified silica is 56.7%, and part of the loss is due to the decomposition of chloroethyl isocyanate grafted on its surface; the final quality of functionalized silica The mass retention rate is 37.6%, and part of the loss is due to the decomposition of organic matter grafted on the silica surface.

3. Preparation of antibacterial and skin-friendly fabrics

Step 1. Mix 10ml of toluene diisocyanate and 8ml of polytetrahydrofuran ether glycol, add nitrogen, add 0.1g of dibutyltin dilaurate, stir until evenly mixed, raise the temperature to 45°C and react for 1 hour, add 1ml of 1, 4-Butanediol, continue to raise the temperature to 70°C for 2 hours, then cool to 40°C and add 1.5ml triethylamine, 1.5g functionalized silica and 2g antioxidant bamboo charcoal powder. After 1 hour of reaction, add 10ml deionized water. Polyurethane is obtained after thorough stirring and natural defoaming;

Step 2: Add polyurethane to 50ml of N,N-dimethylacetamide, stir thoroughly and let it stand to form a spinning solution. Control the flow rate of the spinning solution to 0.4ml/h for wet spinning. The spinning solution is sprayed After the silk board is formed, it is added to the distilled water coagulation bath, and then stretched, dried, and wound to obtain spandex fiber;

Step 3: The spandex fiber is twisted, fixed, warped, and drawn on the machine for weaving, and the fabric is obtained after completion.

Example 2

Preparation of antibacterial and skin-friendly fabrics

Step 1. Mix 12ml of toluene diisocyanate and 10ml of polytetrahydrofuran ether glycol, add nitrogen, add 0.2g of dibutyltin dilaurate, stir until evenly mixed, raise the temperature to 50°C and react for 1.5h, add 1.5ml of 1 , 4-butanediol, continue to raise the temperature to 75°C and react for 2.5h, then cool to 42°C and add 2ml triethylamine, 2g functionalized silica and 2.5g antioxidant bamboo charcoal powder. After 2h of reaction, add 12ml deionized water, stir thoroughly and defoam naturally to obtain polyurethane;

Step 2: Add polyurethane to 60ml of N,N-dimethylacetamide, stir thoroughly and let it stand to form a spinning solution. Control the flow rate of the spinning solution to 0.6ml/h, and perform wet spinning. The spinning solution After passing through the spinneret, it is added to the distilled water coagulation bath, and then stretched, dried, and wound to obtain spandex fiber;

Step 3: The spandex fiber is twisted, fixed, warped, and drawn on the machine for weaving, and the fabric is obtained after completion.

Among them, the preparation method of antioxidant bamboo charcoal micropowder and functionalized silica is the same as in Example 1.

Example 3

Preparation of antibacterial and skin-friendly fabrics

Step 1. Mix 15ml of toluene diisocyanate and 12ml of polytetrahydrofuran ether glycol, add nitrogen, add 0.3g of dibutyltin dilaurate, stir until evenly mixed, raise the temperature to 55°C and react for 2 hours, add 2ml of 1 , 4-butanediol, continue to raise the temperature to 80°C for 3 hours, then cool to 45°C and add 2.5ml triethylamine, 2.5g functionalized silica and 3g antioxidant bamboo charcoal powder. After 3 hours of reaction, add 15ml deionized water. , polyurethane is obtained after thorough stirring and natural defoaming;

Step 2: Add polyurethane to 80ml of N,N-dimethylacetamide, stir thoroughly and let it stand to form a spinning solution. Control the flow rate of the spinning solution to 0.8ml/h, and perform wet spinning. The spinning solution After passing through the spinneret, it is added to the distilled water coagulation bath, and then stretched, dried, and wound to obtain spandex fiber;

Step 3: The spandex fiber is twisted, fixed, warped, and drawn on the machine for weaving, and the fabric is obtained after completion.

Among them, the preparation method of antioxidant bamboo charcoal micropowder and functionalized silica is the same as in Example 1.

Comparative example 1

fabric preparation

Step 1. Mix 12ml of toluene diisocyanate and 10ml of polytetrahydrofuran ether glycol, add nitrogen, add 0.2g of dibutyltin dilaurate, stir until evenly mixed, raise the temperature to 50°C and react for 1.5h, add 1.5ml of 1 , 4-butanediol, continue to raise the temperature to 75°C and react for 2.5 hours. Cool to 42°C and add 2ml triethylamine and 2g functionalized silica. After 2 hours of reaction, add 12ml deionized water, stir thoroughly and naturally eliminate After soaking, polyurethane is obtained;

Step 2: Add polyurethane to 60ml of N,N-dimethylacetamide, stir thoroughly and let it stand to form a spinning solution. Control the flow rate of the spinning solution to 0.6ml/h, and perform wet spinning. The spinning solution After passing through the spinneret, it is added to the distilled water coagulation bath, and then stretched, dried, and wound to obtain spandex fiber;

Step 3: The spandex fiber is twisted, fixed, warped, and drawn on the machine for weaving, and the fabric is obtained after completion.

The preparation method of functionalized silica is the same as in Example 1.

Comparative example 2

Step 1. Mix 12ml of toluene diisocyanate and 10ml of polytetrahydrofuran ether glycol, add nitrogen, add 0.2g of dibutyltin dilaurate, stir until evenly mixed, raise the temperature to 50°C and react for 1.5h, add 1.5ml of 1 , 4-butanediol, continue to raise the temperature to 75°C and react for 2.5h, cool to 42°C and add 2ml triethylamine and 2.5g antioxidant bamboo charcoal powder. After reacting for 2h, add 12ml deionized water, stir thoroughly and naturally sterilize. After soaking, polyurethane is obtained;

Step 2: Add polyurethane to 60ml of N,N-dimethylacetamide, stir thoroughly and let it stand to form a spinning solution. Control the flow rate of the spinning solution to 0.6ml/h, and perform wet spinning. The spinning solution After passing through the spinneret, it is added to the distilled water coagulation bath, and then stretched, dried, and wound to obtain spandex fiber;

Step 3: The spandex fiber is twisted, fixed, warped, and drawn on the machine for weaving, and the fabric is obtained after completion.

Among them, the preparation method of antioxidant bamboo charcoal micropowder is the same as that in Example 1.

Comparative example 3

Step 1. Mix 12ml of toluene diisocyanate and 10ml of polytetrahydrofuran ether glycol, add nitrogen, add 0.2g of dibutyltin dilaurate, stir until evenly mixed, raise the temperature to 50°C and react for 1.5h, add 1.5ml of 1 , 4-butanediol, continue to raise the temperature to 75°C and react for 2.5h, cool to 42°C and add 2ml triethylamine. After reacting for 2h, add 12ml deionized water, stir thoroughly and defoam naturally to obtain polyurethane;

Step 2: Add polyurethane to 60ml of N,N-dimethylacetamide, stir thoroughly and let it stand to form a spinning solution. Control the flow rate of the spinning solution to 0.6ml/h, and perform wet spinning. The spinning solution After passing through the spinneret, it is added to the distilled water coagulation bath, and then stretched, dried, and wound to obtain spandex fiber;

Step 3: The spandex fiber is twisted, fixed, warped, and drawn on the machine for weaving, and the fabric is obtained after completion.

Comparative example 4

Step 1. Mix 12ml of toluene diisocyanate and 10ml of polytetrahydrofuran ether glycol, add nitrogen, add 0.2g of dibutyltin dilaurate, stir until evenly mixed, raise the temperature to 50°C and react for 1.5h, add 1.5ml of 1 , 4-butanediol, continue to raise the temperature to 75°C and react for 2.5h, cool to 42°C and add 2ml triethylamine, 2g functionalized silica and 2.5g bamboo charcoal powder. After 2h of reaction, add 12ml deionized water. Polyurethane is obtained after thorough stirring and natural defoaming;

Step 2: Add polyurethane to 60ml of N,N-dimethylacetamide, stir thoroughly and let it stand to form a spinning solution. Control the flow rate of the spinning solution to 0.6ml/h, and perform wet spinning. The spinning solution After passing through the spinneret, it is added to the distilled water coagulation bath, and then stretched, dried, and wound to obtain spandex fiber;

Step 3: The spandex fiber is twisted, fixed, warped, and drawn on the machine for weaving, and the fabric is obtained after completion.

The preparation method of functionalized silica is the same as in Example 1.

Comparative example 5

Step 1. Mix 12ml of toluene diisocyanate and 10ml of polytetrahydrofuran ether glycol, add nitrogen, add 0.2g of dibutyltin dilaurate, stir until evenly mixed, raise the temperature to 50°C and react for 1.5h, add 1.5ml of 1 , 4-butanediol, continue to raise the temperature to 75°C and react for 2.5h, then cool to 42°C and add 2ml triethylamine, 2g nano-silica and 2.5g antioxidant bamboo charcoal powder. After 2h of reaction, add 12ml deionized water. , polyurethane is obtained after thorough stirring and natural defoaming;

Step 2: Add polyurethane to 60ml of N,N-dimethylacetamide, stir thoroughly and let it stand to form a spinning solution. Control the flow rate of the spinning solution to 0.6ml/h, and perform wet spinning. The spinning solution After passing through the spinneret, it is added to the distilled water coagulation bath, and then stretched, dried, and wound to obtain spandex fiber;

Step 3: The spandex fiber is twisted, fixed, warped, and drawn on the machine for weaving, and the fabric is obtained after completion.

Among them, the preparation method of antioxidant bamboo charcoal micropowder is the same as that in Example 1.

Performance testing

①Make the fabrics prepared in Example 1 to Example 3 and Comparative Example 1 to Comparative Example 5 into samples that meet the specifications, and conduct a breathability test on the samples with reference to the standard GB/T5453-1997 "Textile Fabric Breathability Test"; Refer to the standard GB/T12704.1-2009 "Test Method for Moisture Permeability of Textile Fabrics Part 1: Moisture Absorption Method" to test the moisture absorption performance of the sample; use the DRK321 B-I I surface resistivity tester to test the resistivity of the sample surface to determine its antistatic ability; Referring to the standard GB/T14337-2022 "Test Method for Tensile Properties of Chemical Fiber Short Fibers", test the tensile strength of the sample and the sample after high temperature treatment in a 90°C aging oven for 24 hours through a universal material testing machine to determine its mechanical properties and Anti-aging ability, specific test results are shown in the table below:

It can be seen from the above table that the samples prepared in Examples 1 to 3 are at a relatively high level in terms of breathability, moisture absorption, antistatic, anti-aging and mechanical properties. The sample prepared in Comparative Example 1 did not add antioxidant bamboo charcoal powder, so The anti-aging, air permeability, and moisture absorption properties are at a low level. The sample prepared in Comparative Example 2 did not add functionalized silica, so its antistatic and tensile strength properties are very low. The sample prepared in Comparative Example 3 has no Anti-aging, breathable, hygroscopic, antistatic and tensile strength are all at very low levels. The sample prepared in Comparative Example 4 was directly added with bamboo charcoal powder without surface treatment. The bamboo charcoal powder agglomerated in the matrix. , so the mechanical properties of the fabric are very poor, and the breathability, moisture absorption, antistatic, and anti-aging effects are average. Nano-silica is added directly to the sample prepared in Comparative Example 5. Nano-silica also agglomerates in the matrix, resulting in fabric The mechanical properties are poor, and the other effects are average.

② Cut the fabrics prepared in Examples 1 to 3 and Comparative Examples 1 to 5 into samples that meet the specifications. Refer to the standard GB/T20944.3-2008 "Evaluation of Antibacterial Performance of Textiles Part 3: Oscillation Method" Test the antibacterial properties of the samples; use the drip method to test the acaricidal activity of the samples. Place the sample on a well cell culture plate, add 2 drops of deionized water to infiltrate it, and place three mites on it at the same time. Use an inverted microscope to observe. Every other Observe once a minute until all three mites are dead, record the time of death, do three tests for each sample, and average the test results to judge the mite removal effect of the sample; the specific test results are shown in the table below:

Antibacterial property/% Mite removal effect/min Example 1 99.2 2 Example 2 99.4 1 Example 3 99.1 1 Comparative example 1 93.3 10 Comparative example 2 92.6 4 Comparative example 3 65.8 >30 Comparative example 4 88.2 12 Comparative example 5 86.9 7

As can be seen from the table above, the samples prepared in Examples 1 to 3 have excellent antibacterial and mite removal effects. The sample prepared in Comparative Example 1 did not add antioxidant bamboo charcoal micropowder, and only the imidazolyl quaternary ammonium salt played a role, so the antibacterial effect was relatively low. Good but not as good as the examples, and the effect of removing mites is average. The sample prepared in Comparative Example 2 did not add functionalized silica, and only the antioxidant bamboo charcoal micro powder played a role. The effect of removing mites was good, but the antibacterial effect was average. Comparative Example 3 The prepared samples did not add antioxidant bamboo charcoal micropowder or functionalized silica, so they had almost no antibacterial and mite removal capabilities. The samples prepared in Comparative Examples 4 and 5 both had agglomeration in the matrix, so in The antibacterial and mite-removing properties are both at a poor level.

In the description of this specification, reference to the terms "one embodiment," "some embodiments," "an example," "specific examples," or "some examples" or the like means that specific features are described in connection with the embodiment or example. , structures, materials or features are included in at least one embodiment or example of the invention. In this specification, the schematic expressions of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the specific features, structures, materials or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, those skilled in the art may combine and combine different embodiments or examples and features of different embodiments or examples described in this specification unless they are inconsistent with each other.

The above contents are only examples and explanations of the concept of the invention. Those skilled in the art may make various modifications or additions to the described specific embodiments or substitute them in similar ways, as long as they do not deviate from the concept of the invention. The defined scope shall all belong to the protection scope of the present invention.

Claims (9)

1. An antibacterial skin-friendly fabric is characterized in that the fabric is prepared by taking antioxidant bamboo charcoal micropowder and functional silicon dioxide as fillers to prepare spandex fibers and weaving the spandex fibers; the antioxidant bamboo charcoal micropowder is prepared by amination of bamboo charcoal micropowder and grafting of 3- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionic acid; the functionalized silica is prepared by grafting imidazole-1-acetic acid after modifying the surface of nano silica.

2. The antibacterial skin-friendly fabric as claimed in claim 1, wherein the preparation method of the antioxidant bamboo charcoal micropowder comprises the following steps:

(1) Placing the bamboo charcoal micropowder in a plasma treatment cavity, introducing ammonia gas for treatment for 10-15min, and taking out to obtain aminated bamboo charcoal micropowder;

(2) Placing the aminated bamboo charcoal micropowder in ethanol, performing ultrasonic dispersion for 5-10min, adding 3- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionic acid and a composite catalyst, heating to 50-70 ℃ for reacting for 5-8h, filtering, washing and vacuum drying to obtain the antioxidant bamboo charcoal micropowder.

3. The antibacterial skin-friendly fabric according to claim 2, wherein in the step (1), the power of the plasma treatment cavity is 100-150W, and the atmospheric pressure is 2-5Pa.

4. The antibacterial skin-friendly fabric according to claim 2, wherein in the step (2), the composite catalyst is 4-dimethylaminopyridine and dicyclohexylcarbodiimide in a mass ratio of 3-6:1-2.

5. The antibacterial skin-friendly fabric according to claim 1, wherein the preparation method of the functionalized silica comprises the following steps:

s1, putting nano silicon dioxide into deionized water, performing ultrasonic dispersion for 15-20min, adding chloroethyl isocyanate and a catalyst, heating to 65-75 ℃ for reaction for 3-5h, filtering, washing and vacuum drying to obtain modified silicon dioxide;

s2, placing the modified silicon dioxide in deionized water, adding imidazole-1-acetic acid, uniformly mixing, carrying out reflux reaction, cooling to room temperature, filtering, washing and drying in vacuum to obtain the functionalized silicon dioxide.

6. The antibacterial skin-friendly fabric according to claim 5, wherein in the step S1, the catalyst is any one of stannous octoate and dibutyltin dilaurate.

7. The antibacterial skin-friendly fabric according to claim 5, wherein in the step S2, the reflux reaction temperature is 80-90 ℃ and the time is 24-48h.

8. The antibacterial skin-friendly fabric as claimed in claim 1, wherein the preparation method of the antibacterial skin-friendly fabric comprises the following steps:

mixing toluene diisocyanate and polytetrahydrofuran ether glycol, introducing nitrogen, adding dibutyltin dilaurate, stirring until the mixture is uniform, heating to 45-55 ℃ for reaction for 1-2h, adding 1, 4-butanediol, continuously heating to 70-80 ℃ for reaction for 2-3h, cooling to 40-45 ℃, adding triethylamine, functionalized silica and antioxidant bamboo charcoal micropowder, reacting for 1-3h, adding deionized water, fully stirring, and naturally defoaming to obtain polyurethane;

step two, adding polyurethane into N, N-dimethylacetamide, fully stirring and standing to form spinning solution, controlling the flow rate of the spinning solution, performing wet spinning, adding the spinning solution into distilled water coagulation bath after passing through a spinneret plate, and then stretching, pulling, drying and winding to obtain spandex fiber;

and thirdly, twisting, warping and drafting the spandex fiber, and weaving the spandex fiber on a machine to obtain the fabric.

9. The antibacterial skin-friendly fabric according to claim 8, wherein in the second step, the flow rate of the spinning solution is 0.4-0.8ml/h.