CN102677394A - Multi-component antibacterial non-woven fabric - Google Patents

Abstract

The invention discloses a multi-component antibacterial non-woven fabric. The antibacterial non-woven fabric is formed by mixing 80%-20% by mass of modified polyamide and 20%-80% by mass of modified polyester, and preparing and molding through a spunbond spunlace process; and the surface of non-woven fabric fibre member is provided with a chloramine structure connected by covalent bond. The multi-component antibacterial non-woven fabric disclosed by the invention has the characteristics of strong sterilizing effect, ultrafine fibre, comfortable touch feeling and good mechanical property, and overcomes the defects of a post-treatment method using a finishing agent during traditional preparation of the antibacterial fabric; and the non-woven fabric disclosed by the invention is subjected to simple chloration so as to recycle the sterilizing effect of the non-woven fabric.

Description

A multi-component antibacterial non-woven fabric

technical field

The invention relates to a multi-component antibacterial nonwoven fabric. It belongs to the field of textile technology.

Background technique

Multi-component ultra-fine fiber non-woven fabric refers to the ultra-fine fibers with multiple components regularly arranged in a monofilament. Generally, multi-components are extruded and melted by multiple screws, and spun at the same time to form sea islands. Type, skin-core or peel-off fabrics, according to the difference in the heat and moisture shrinkage of the multi-components, are treated with chemical or mechanical fiber opening to form non-woven fabrics with ultra-fine fibers. The fiber diameter is generally below 4 μm, only 1/10 of real silk, and the specific surface area is several to dozens of times that of conventional fibers.

At present, domestic antibacterial non-woven fabrics are mainly produced in two ways: (1) directly using antibacterial fibers to make fabrics; (2) post-processing the fabrics with antibacterial agents to obtain antibacterial properties. In the field of antibacterial preparation of antibacterial textiles, finishing methods account for about 70%. In comparison, the fabric prepared directly with antibacterial fiber has a long-lasting antibacterial effect and good washing resistance. Although the post-finishing method is simple to process, there are many three wastes in the production process, poor washing resistance and poor antibacterial effect persistence, which has a great impact on the appearance of the fabric, and it is unavoidable to be compatible with various finishing agents and dyeing agents. issues such as sex.

Chinese patent application No. 89109708.2, published on August 29, 1990, the name of the invention is a method for the manufacture of unidirectional antibacterial nonwovens. The application discloses that acrylic fibers are modified with copper sulfate, sodium thiosulfate and alkaline chlorine to form antibacterial fibers, and then the fibers are arranged in one direction with an air-flow carding machine, and then a quantitative mesh is formed by a web-laying machine. , and finally glued with acrylic acid and dried to prepare antibacterial nonwoven fabric. The disadvantage is that the fibers of the prepared antibacterial nonwoven fabric are arranged in one direction, and the bidirectional mechanical properties are not good, which limits its application range.

Chinese Patent Application No. 200810120076.2, published on December 17, 2008, the name of the invention is an antibacterial and hydrophilic nonwoven fabric and its preparation method and application. This application discloses a preparation method of an antibacterial and hydrophilic nonwoven fabric: at a temperature of 20-40°C, the nonwoven fabric is dipped twice in a finishing solution containing silk protein and chitin, Dry and fix under the condition of less than 160°C. That is, a hydrophilic antibacterial nonwoven fabric is obtained. Its shortcoming is to utilize the method of post-finishing, and process is complicated, and the waste water that produces in the preparation process is many, and the outward appearance of fabric, comfortableness are bad.

Chinese patent application number 02117479.2, published on November 13, 2002, is an invention and creation titled composite (Ag+Ag ₂ O) anti-aggregation nano-silver antibacterial nonwoven fabric and industrialized production process. This application discloses a method in which ultrafine silver particles are metered and sprayed onto a nonwoven fabric material through an atomization technique, and attached to and between fiber elements of the nonwoven fabric. Its disadvantage is that the antibacterial agent is coated on the surface of the fabric by physical methods, and the antibacterial agent and the fabric are not connected by covalent bonds. The washing resistance of the fabric is not good.

In the above-mentioned technologies, the preparation of antibacterial nonwovens has a greater impact on the appearance of the fabric, a certain impact on the physical and mechanical properties of the fabric, and a certain impact on the post-dyeing and finishing of the fabric. Therefore, in the process of preparing antibacterial fabrics, in addition to having antibacterial broad-spectrum, durability, and good bactericidal effect, it should also have the following characteristics: (1) No stimulation to the human body, no allergies. (2) The antibacterial durability of the fabric is good (after washing and disinfection, the antibacterial property will not be lost); (3) It has an effect on the appearance, feel and comfort of the fiber fabric; (4) The processing method is simple and suitable for industrial production .

Contents of the invention

For above-mentioned existence deficiency, the purpose of the present invention is to overcome above-mentioned defect, a kind of preparation method of multi-component antibacterial nonwoven fabric is provided, the technical solution for meeting the purpose of the present invention is:

A multi-component antibacterial non-woven fabric. The antibacterial non-woven fabric is mixed with 80%-20% by mass of modified polyamide and 20%-80% by mass of modified polyester. Process forming, the surface of the non-woven fiber element has the following structure connected by covalent bonds:

Wherein: R is H or tert-butyl, and R' is O or N.

The modified polyamide is prepared by mixing polyamide, functional monomers containing double bonds and amine structures, and free radical initiators at a mass ratio of 100:1-10:0.1-0.4, and is prepared by twin-screw reactive extrusion.

The modified polyester is prepared by mixing polyester, functional monomers containing double bonds and amine structures, and free radical initiators at a mass ratio of 100:1-10:0.1-0.4, and is prepared by twin-screw reactive extrusion.

The melting point range of the polyamide and polyester is between 210°C and 270°C.

The functional monomers containing double bonds and amine structures are acrylamide (AAM), acrylamide (MAM), N-tert-butylacrylamide (NTBA), 2,4-diamino-6-diallyl Amino-1,3,5-triazine (NDAM) or 3-allyl-5,5-dimethylhydantoin (ADMH), 3-(4-vinylbenzyl)-hydantoin (VBDMH) A sort of. The structure of the monomer is as follows:

The free radical initiator mentioned above is dicumyl peroxide (DCP) or 2,5-dimethyl-2,5-di-tert-butylperoxy-3-yne (DTBHY). The chemical structure of the free radical initiator is as follows:

The forming process of the non-woven fabric is a spunbond spunlace forming process.

Owing to adopting above-mentioned technical scheme, the present invention has the following advantages compared with prior art:

1. The modified polyamide and modified polyester used in the present invention are non-woven matrix materials. The functional groups of the structure are connected to the surface of the fiber elements with covalent bonds, making the surface of the non-woven fabric have antibacterial properties. Modified polyamide and modified polyester multi-component antibacterial non-woven fabrics overcome the shortcomings of traditional polyolefin antibacterial fibers in mechanical properties and poor hydrophilic dyeability.

2. The functional monomers selected by the present invention are two characteristic functional group monomers with double bonds and amine-containing structures. Due to the existence of double bonds, the functional monomers can be connected to the main chain of the substrate. With the presence of functions, the non-woven fabric can form an antibacterial structure with halide amines on the surface of the non-woven fabric fiber through amine chlorination, endowing the material with antibacterial properties. It is an ideal functional monomer for graft modification.

3. The present invention adopts the spunbond spunlace molding process, and the produced cross-section is a two-component structure with a hollow orange segment. A single fiber is split into multiple fibers and formed into ultrafine fibers, which can increase the contact area of bacteria, thereby Enhance the bactericidal effect.

4. The non-woven fabric of the present invention converts the monomer containing amine structure into a material with antibacterial structure of chloramine through amine chlorination, so that the material has a bactericidal function. It can be cycled repeatedly in this way, so that the cloth sample has permanent antibacterial properties. The mechanism of the antibacterial fiber of the present invention is that the chloramine structure generates active chlorine under the condition of water, and has strong bactericidal effect. After the bactericidal action, the chloramine structure transforms into an amine structure, and then through amine chlorination, it is reduced to a chloramine structure with a bactericidal function. As the cycle repeats, the simple reaction formula is as follows:

5. The non-woven fabric of the present invention uses the spunbond spunlace forming process to produce a two-component segmental-peel nonwoven fabric, which can realize the splitting of a single spunbonded fiber into multiple fibers to achieve fine denier and increase the fiber density. The specific surface area of the large fiber in contact with bacteria can enhance the bactericidal effect. The fibers of the non-woven fabric prepared by the selected spunbond water process are evenly arranged, and have excellent mechanical properties in the horizontal and vertical directions.

Detailed ways

A multi-component antibacterial non-woven fabric. The antibacterial non-woven fabric is mixed with 80%-20% by mass of modified polyamide and 20%-80% by mass of modified polyester. The process is prepared and shaped to obtain an antibacterial non-woven fabric. The following structure is covalently bonded on the surface of the non-woven fiber element:

Wherein: R is H or tert-butyl, and R' is N or O.

The preparation process steps of a multi-component antibacterial non-woven fabric are as follows:

1 Preparation of modified polyamide and modified polyester

Mix polyamide, monomers containing double bonds and amine structures, and free radical initiator amine in a mass ratio of 100:1 to 10:0.1 to 0.4, dry for 2 hours, then mix evenly, and prepare by twin-screw reactive extrusion .

The modified polyamide is prepared by mixing polyamide, functional monomer containing amine structure, and free radical initiator at a mass ratio of 100:1-10:0.1-0.4, and then extruding through twin-screw reaction.

The melting point range of the polyamide is between 210°C and 270°C.

The functional monomers containing double bonds and amine structures are acrylamide (AAM), acrylamide (MAM), N-tert-butylacrylamide (NTBA), 2,4-diamino-6-diallyl Amino-1,3,5-triazine (NDAM) or 3-allyl-5,5-dimethylhydantoin (ADMH), 3-(4-vinylbenzyl)-hydantoin (VBDMH) A sort of. The structure of the monomer is as follows:

Described free radical initiator is dicumyl peroxide (DCP) or 2,5-dimethyl-2,5-di-tert-butyl peroxy-3-alkyne DTBHY, the free radical initiator The chemical structure is as follows:

The mixed material is put into the hopper of the twin-screw extruder, extruded through melt reaction, and pelletized into antibacterial polyamide chips. Among them, the temperature settings of each heating zone of the screw are: Zone 1: 230°C; Zone 2: 240°C; Zone 3: 250°C; Zone 4: 245°C; Zone 5: 245°C; Zone 6: 250; Zone 7: 250°C ; Head: 260 ° C; residence time 2 ~ 3min. The pressure is 15MPa.

Mix polyester, functional monomers containing double bonds and amine structures, and free radical initiators in a mass ratio of 100:1 to 10:0.1 to 0.4, dry for 2 hours, and then mix evenly, and then react and extrude the product with a screw extruder .

The modified polyester is prepared by drying and mixing polyester, functional monomer containing amine structure, and free radical initiator in a mass ratio of 100:1-10:0.1-0.4, and then extruding through twin-screw reaction.

The functional monomers containing double bonds and amine structures are acrylamide (AAM), acrylamide (MAM), N-tert-butylacrylamide (NTBA), 2,4-diamino-6-diallyl Amino-1,3,5-triazine (NDAM), 3-allyl-5,5-dimethylhydantoin (ADMH), 3-(4-vinylbenzyl)-hydantoin (VBDMH) among them A sort of. The structure of the monomer is as follows:

The above-mentioned free radical initiator is dicumyl peroxide (DCP) or 2,5-dimethyl-2,5-di-tert-butyl peroxy-3-alkyne DTBHY, and the chemical structure of the free radical initiator is as follows :

The mixed material is put into the hopper of the twin-screw extruder, extruded through melting reaction, and granulated into antibacterial particles. Among them, the temperature settings of each heating zone of the twin-screw are as follows: zone 1: 230°C; zone 2: 240°C; zone 3: 250°C; zone 4: 245°C; zone 5: 245°C; zone 6: 250; zone 7: 250 °C; machine head: 260 °C; residence time 2-3min. The pressure is 15MPa.

2 Preparation of non-woven fabric

The spun-bonded spunlace process is used to uniformly mix the modified polyamide with a mass percentage of 20% to 80% and the modified polyester with a percentage of 80% to 20%, and then dry. Then melt through their own screw extruders, and after the melt is filtered, it is included in the two-component spunbond spunlace process, and the fibers containing two components are sprayed out through the spinneret, and the air flow is stretched at 5000m/min. The net is laid on the web forming machine, and then enters the hydroentanglement machine for multiple high-pressure hydroentanglement, splitting the fibers into ultra-fine fibers and fixing them into non-woven fabrics. Prepared as a non-woven fabric. The process parameters are as follows: the temperature is 200° C. to 300° C., the receiving distance is 10 cm to 20 cm, and the fineness of the fiber is 1 micron to 20 microns.

3 Preparation of antibacterial nonwoven fabric

The non-woven fabric obtained by the above process is subjected to chloramination treatment, and the non-woven fabric is soaked in a mixture with an active chlorine concentration of 1000-10000ppm and a non-ionic surfactant TX-100 (mass fraction 0.05%-1%) solution, soaked at room temperature for 30 minutes, washed with excess deionized water, and dried. That is, the following structure with covalent bonds on the surface of the non-woven fiber element is obtained:

A multi-component antibacterial nonwoven fabric.

When the functional monomer containing double bond and amine structure is AAM or MAM or ADMH or VBDMH or, R is -H, R' is O; when the functional monomer containing double bond and amine structure is NTBA, R is tertiary Butyl, R' is O; when the monomer containing double bond and amine structure is NDAM, R is H, R' is O.

Example 1

1000 kg of polyethylene terephthalate (PET), 10 kg of AAM, and 1 kg of DCP were dried for 2 hours, then mixed uniformly, and nitrogen was introduced into the container of the screw extruder for 5 minutes to remove oxygen. The mixed material is put into the hopper of the twin-screw extruder, extruded through melting reaction, and granulated into antibacterial particles. Among them, the temperature settings of each heating zone of the twin-screw extruder are: zone 1 temperature: 230°C; zone 2: 240°C; zone 3: 250°C; zone 4: 245°C; zone 5: 245°C; zone 6: 250; Zone 7: 250°C; machine head: 260°C; residence time: 2-3 minutes. The pressure is 15MPa. Modified PET chips.

Dry 1000 kg of polyhexamethylenediamine adipic acid (PA66), 10 kg of AAM, and 1 kg of DTBHY for 2 hours, then mix evenly, and blow nitrogen into the container of the screw extruder for 5 minutes to remove oxygen. The mixed material is put into the hopper of the twin-screw extruder, extruded through melting reaction, and granulated into antibacterial particles. Among them, the temperature settings of each heating zone of the twin-screw extruder are: zone 1 temperature: 230°C; zone 2: 240°C; zone 3: 250°C; zone 4: 245°C; zone 5: 245°C; zone 6: 250; Zone 7: 250°C; machine head: 260°C; residence time: 2-3 minutes. The pressure is 15MPa. Modified PA66 slices.

The mass ratio of the above slices is 20% PET: 80% PA6, dried separately, and then filtered and melted through the respective screw extruders, and then enters the two-component spinning unit, and is sprayed out through the spinneret containing polyester and nylon. The fibers of the components are blown by cold wind, stretched by the airflow of 5000m/min, laid into a fiber web, and then enter the hydroentanglement machine for high-pressure hydroentanglement, split the fibers into superfine fibers and fix them into non-woven fabrics, and dry them.

Soak the above-mentioned non-woven fabric in a mixed solution of TX-100 with a concentration of 1500 ppm active chlorine and 0.05% mass fraction for 30 minutes. Then rinse with excess deionized water and dry.

Example 2

1000 kg of polyethylene terephthalate (PET), 100 kg of MAM, and 4 kg of DCP were dried for 2 hours, then mixed uniformly, and nitrogen was introduced into the container of the screw extruder for 5 minutes to remove oxygen. The mixed material is put into the hopper of the twin-screw extruder, extruded through melting reaction, and granulated into antibacterial particles. Among them, the temperature settings of each heating zone of the screw are: Zone 1: 230°C; Zone 2: 240°C; Zone 3: 250°C; Zone 4: 245°C; Zone 5: 245°C; Zone 6: 250; Zone 7: 250°C ; Head: 260 ° C; residence time 2 ~ 3min. The pressure is 15MPa. Obtain modified PET slices.

Dry 1000 kg of polyhexamethylenediamine adipic acid (PA66), 100 kg of MAM, and 4 kg of DCP for 2 hours, then mix evenly, and feed nitrogen into the container of the screw extruder for 5 minutes to remove oxygen. The mixed material is put into the hopper of the twin-screw extruder, extruded through melting reaction, and granulated into antibacterial particles. Among them, the temperature settings of each heating zone of the screw are: Zone 1: 230°C; Zone 2: 240°C; Zone 3: 250°C; Zone 4: 245°C; Zone 5: 245°C; Zone 6: 250; Zone 7: 250°C ; Head: 260 ° C; residence time 2 ~ 3min. The pressure is 15MPa. The yield was 95%. Get modified PA66 slices.

The mass ratio of the above slices is 20% PET: 80% PA6, dried separately, and then filtered and melted through the respective screw extruders, and then enters the two-component spinning unit, and is sprayed out through the spinneret containing polyester and nylon. The fibers of the components are blown by cold wind, stretched by the airflow of 5000m/min, laid into a fiber web, and then enter the hydroentanglement machine for high-pressure hydroentanglement, split the fibers into superfine fibers and fix them into non-woven fabrics, and dry them.

Soak the above-mentioned non-woven fabric in a mixed solution of TX-100 with a concentration of 1500 ppm active chlorine and 0.05% mass fraction for 30 minutes. Then rinse with excess deionized water and dry.

Example 3

1000 kg of polyethylene terephthalate (PET), 200 kg of NTBA, and 6 kg of DCP were dried for 2 hours, then mixed uniformly, and nitrogen was introduced into the container of the screw extruder for 5 minutes to remove oxygen. The mixed material is put into the hopper of the twin-screw extruder, extruded through melting reaction, and granulated into antibacterial particles. Among them, the temperature setting of each heating zone of the screw is as follows: Zone 1: 230°C; Zone 2: 240°C; Zone 3: 250°C; Zone 4: 245°C; Zone 5: 245°C; Zone 6: 250; Zone 7: 250°C; Machine head: 260°C; residence time 2-3 minutes. The pressure is 15MPa. Obtain modified PET slices.

Dry 1000 kg of polyhexamethylenediamine adipic acid (PA66), 200 kg of NTBA, and 6 kg of DCP for 2 hours, then mix evenly, and feed nitrogen into the container of the screw extruder for 5 minutes to remove oxygen. The mixed material is put into the hopper of the twin-screw extruder, extruded through melting reaction, and granulated into antibacterial particles. Among them, the temperature settings of each heating zone of the screw are: Zone 1: 230°C; Zone 2: 240°C; Zone 3: 250°C; Zone 4: 245°C; Zone 5: 245°C; Zone 6: 250; Zone 7: 250°C ; Head: 260 ° C; residence time 2 ~ 3min. The pressure is 15MPa. Get modified PA66 slices.

The mass ratio of the above slices is 20% PET: 80% PA6, dried separately, and then filtered and melted through the respective screw extruders, and then enters the two-component spinning unit, and is sprayed out through the spinneret containing polyester and nylon. The fibers of the components are blown by cold wind, stretched by the airflow of 5000m/min, laid into a fiber web, and then enter the hydroentanglement machine for high-pressure hydroentanglement, split the fibers into superfine fibers and fix them into non-woven fabrics, and dry them.

Soak the above-mentioned non-woven fabric in a mixed solution of TX-100 with a concentration of 1500 ppm active chlorine and 0.05% mass fraction for 30 minutes. Then rinse with excess deionized water and dry.

Example 4

Dry 1000 kg of polyethylene terephthalate (PET), 10 kg of NDAM, and 1 kg of DTBHY for 2 hours, then mix them uniformly, and pass nitrogen into the container of the screw extruder for 5 minutes to remove oxygen. The mixed material is put into the hopper of the twin-screw extruder, extruded through melting reaction, and granulated into antibacterial particles. Among them, the temperature settings of each heating zone of the screw are: Zone 1: 230°C; Zone 2: 240°C; Zone 3: 250°C; Zone 4: 245°C; Zone 5: 245°C; Zone 6: 250; Zone 7: 250°C ; Head: 260 ° C; residence time 2 ~ 3min. The pressure is 15MPa. Obtain modified PET slices.

Dry 1000 kg of polyhexamethylenediamine adipic acid (PA66), 200 kg of NDAM, and 6 kg of DTBHY for 2 hours, then mix evenly, and pass nitrogen into the container of the screw extruder for 5 minutes to remove oxygen. The mixed material is put into the hopper of the twin-screw extruder, extruded through melting reaction, and granulated into antibacterial particles. Among them, the temperature settings of each heating zone of the screw are: Zone 1: 230°C; Zone 2: 240°C; Zone 3: 250°C; Zone 4: 245°C; Zone 5: 245°C; Zone 6: 250; Zone 7: 250°C ; Head: 260 ° C; residence time 2 ~ 3min. The pressure is 15MPa. Get modified PA66 slices.

The mass ratio of the above slices is 40% PET: 60% PA6, dried separately, and then filtered and melted through the respective screw extruders, and then enters the two-component spinning unit, and is sprayed out through the spinneret containing polyester and nylon. The fibers of the components are blown by cold wind, stretched by the airflow of 5000m/min, laid into a fiber web, and then enter the hydroentanglement machine for high-pressure hydroentanglement, split the fibers into superfine fibers and fix them into non-woven fabrics, and dry them.

Soak the above-mentioned non-woven fabric in a mixed solution of TX-100 with a concentration of 1500 ppm active chlorine and 0.05% mass fraction for 30 minutes. Then rinse with excess deionized water and dry.

Example 5

1000 kg of polyethylene terephthalate (PET), 100 kg of ADMH, and 4 kg of DCP were dried for 2 hours, then mixed uniformly, and nitrogen was introduced into the container of the screw extruder for 5 minutes to remove oxygen. The mixed material is put into the hopper of the twin-screw extruder, extruded through melting reaction, and granulated into antibacterial particles. Among them, the temperature settings of each heating zone of the screw are: Zone 1: 230°C; Zone 2: 240°C; Zone 3: 250°C; Zone 4: 245°C; Zone 5: 245°C; Zone 6: 250; Zone 7: 250°C ; Head: 260 ° C; residence time 2 ~ 3min. The pressure is 15MPa. Get modified ET slices.

1000 kilograms of polyhexamethylenediamine adipic acid (PA66), 100 kilograms of ADMH, and 4 kilograms of DCP were dried for 2 hours, then mixed uniformly, and the container of the screw extruder was fed with nitrogen for 5 minutes to remove oxygen. The mixed material is put into the hopper of the twin-screw extruder, extruded through melting reaction, and granulated into antibacterial particles. Among them, the temperature settings of each heating zone of the screw are: Zone 1: 230°C; Zone 2: 240°C; Zone 3: 250°C; Zone 4: 245°C; Zone 5: 245°C; Zone 6: 250; Zone 7: 250°C ; Head: 260 ° C; residence time 2 ~ 3min. The pressure is 15MPa. Get modified PA66 slices.

The mass ratio of the above slices is 40% PET: 60% PA6, dried separately, and then filtered and melted through the respective screw extruders, and then enters the two-component spinning unit, and is sprayed out through the spinneret containing polyester and nylon. The fibers of the components are blown by cold wind, stretched by the airflow of 5000m/min, laid into a fiber web, and then enter the hydroentanglement machine for high-pressure hydroentanglement, split the fibers into superfine fibers and fix them into non-woven fabrics, and dry them.

Soak the above-mentioned non-woven fabric in a mixed solution of TX-100 with a concentration of 1500 ppm active chlorine and 0.05% mass fraction for 30 minutes. Then rinse with excess deionized water and dry.

Example 6

Dry 1000 kg of polyethylene terephthalate (PET), 200 kg of VBDMH, and 6 kg of DTBHY for 2 hours, then mix well, and pass nitrogen into the container of the screw extruder for 5 minutes to remove oxygen. The mixed material is put into the hopper of the twin-screw extruder, extruded through melting reaction, and granulated into antibacterial particles. Among them, the temperature settings of each heating zone of the twin-screw extruder are: zone 1 temperature: 230°C; zone 2: 240°C; zone 3: 250°C; zone 4: 245°C; zone 5: 245°C; zone 6: 250; Zone 7: 250°C; machine head: 260°C; residence time: 2-3 minutes. The pressure is 15MPa. Modified PET chips.

1000 kg of polyhexamethylenediamine adipic acid (PA66), 10 kg of VBDMH, and 1 kg of DCP were dried for 2 hours, then mixed evenly, and nitrogen was introduced into the container of the screw extruder for 5 minutes to remove oxygen. The mixed material is put into the hopper of the twin-screw extruder, extruded through melting reaction, and granulated into antibacterial particles. Among them, the temperature settings of each heating zone of the twin-screw extruder are: zone 1 temperature: 230°C; zone 2: 240°C; zone 3: 250°C; zone 4: 245°C; zone 5: 245°C; zone 6: 250; Zone 7: 250°C; machine head: 260°C; residence time: 2-3 minutes. The pressure is 15MPa. Modified PA66 slices.

The mass ratio of the above slices is 40% PET: 60% PA6, dried separately, and then filtered and melted through the respective screw extruders, and then enters the two-component spinning unit, and is sprayed out through the spinneret containing polyester and nylon. The fibers of the components are blown by cold wind, stretched by the airflow of 5000m/min, laid into a fiber web, and then enter the hydroentanglement machine for high-pressure hydroentanglement, split the fibers into superfine fibers and fix them into non-woven fabrics, and dry them.

Soak the above-mentioned non-woven fabric in a mixed solution of TX-100 with a concentration of 1500 ppm active chlorine and 0.05% mass fraction for 30 minutes. Then rinse with excess deionized water and dry.

Example 7

1000 kg of polyethylene terephthalate (PET), 10 kg of AAM, and 1 kg of DCP were dried for 2 hours, then mixed uniformly, and nitrogen was introduced into the container of the screw extruder for 5 minutes to remove oxygen. The mixed material is put into the hopper of the twin-screw extruder, extruded through melting reaction, and granulated into antibacterial particles. Among them, the temperature settings of each heating zone of the screw are: Zone 1: 230°C; Zone 2: 240°C; Zone 3: 250°C; Zone 4: 245°C; Zone 5: 245°C; Zone 6: 250; Zone 7: 250°C ; Head: 260 ° C; residence time 2 ~ 3min. The pressure is 15MPa. Obtain modified PET slices.

Dry 1000 kg of polyhexamethylenediamine adipic acid (PA66), 10 kg of MAM, and 1 kg of DTBHY for 2 hours, then mix evenly, and blow nitrogen into the container of the screw extruder for 5 minutes to remove oxygen. The mixed material is put into the hopper of the twin-screw extruder, extruded through melting reaction, and granulated into antibacterial particles. Among them, the temperature settings of each heating zone of the screw are: Zone 1: 230°C; Zone 2: 240°C; Zone 3: 250°C; Zone 4: 245°C; Zone 5: 245°C; Zone 6: 250; Zone 7: 250°C ; Head: 260 ° C; residence time 2 ~ 3min. The pressure is 15MPa. Get modified PA66 slices.

The mass ratio of the above slices is 60% PET: 40% PA6, dried separately, and then filtered and melted through the respective screw extruders, and then enters the two-component spinning unit, and is sprayed out through the spinneret containing polyester and nylon. The fibers of the components are blown by cold wind, stretched by the airflow of 5000m/min, laid into a fiber web, and then enter the hydroentanglement machine for high-pressure hydroentanglement, split the fibers into superfine fibers and fix them into non-woven fabrics, and dry them.

Soak the above-mentioned non-woven fabric in a mixed solution of TX-100 with a concentration of 1500 ppm active chlorine and 0.05% mass fraction for 30 minutes. Then rinse with excess deionized water and dry.

Example 8

Dry 1000 kg of polyethylene terephthalate (PET), 100 kg of NTBA, and 4 kg of DTBHY for 2 hours, then mix well, and pass nitrogen into the container of the screw extruder for 5 minutes to remove oxygen. The mixed material is put into the hopper of the twin-screw extruder, extruded through melting reaction, and granulated into antibacterial particles. Among them, the temperature settings of each heating zone of the screw are: Zone 1: 230°C; Zone 2: 240°C; Zone 3: 250°C; Zone 4: 245°C; Zone 5: 245°C; Zone 6: 250; Zone 7: 250°C ; Head: 260 ° C; residence time 2 ~ 3min. The pressure is 15MPa. Obtain modified PET slices.

Dry 1000 kg of polyhexamethylenediamine adipic acid (PA66), 100 kg of NDAM, and 4 kg of DTBHY for 2 hours, then mix evenly, and pass nitrogen into the container of the screw extruder for 5 minutes to remove oxygen. The mixed material is put into the hopper of the twin-screw extruder, extruded through melting reaction, and granulated into antibacterial particles. Among them, the temperature settings of each heating zone of the screw are: Zone 1: 230°C; Zone 2: 240°C; Zone 3: 250°C; Zone 4: 245°C; Zone 5: 245°C; Zone 6: 250; Zone 7: 250°C ; Head: 260 ° C; residence time 2 ~ 3min. The pressure is 15MPa. Get modified PA66 slices.

The mass ratio of the above slices is 60% PET: 40% PA6, dried separately, and then filtered and melted through the respective screw extruders, and then enters the two-component spinning unit, and is sprayed out through the spinneret containing polyester and nylon. The fibers of the components are blown by cold wind, stretched by the airflow of 5000m/min, laid into a fiber web, and then enter the hydroentanglement machine for high-pressure hydroentanglement, split the fibers into superfine fibers and fix them into non-woven fabrics, and dry them.

Soak the above-mentioned non-woven fabric in a mixed solution of TX-100 with a concentration of 1500 ppm active chlorine and 0.05% mass fraction for 30 minutes. Then rinse with excess deionized water and dry.

Example 9

1000 kg of polyethylene terephthalate (PET), 200 kg of ADMH, and 6 kg of DTBHY were dried for 2 hours, then mixed uniformly, and nitrogen was introduced into the container of the screw extruder for 5 minutes to remove oxygen. The mixed material is put into the hopper of the twin-screw extruder, extruded through melting reaction, and granulated into antibacterial particles. Among them, the temperature settings of each heating zone of the screw are: Zone 1: 230°C; Zone 2: 240°C; Zone 3: 250°C; Zone 4: 245°C; Zone 5: 245°C; Zone 6: 250; Zone 7: 250°C ; Head: 260 ° C; residence time 2 ~ 3min. The pressure is 15MPa. Obtain modified PET slices.

Dry 1000 kg of polyhexamethylenediamine adipic acid (PA66), 200 kg of VBDMH, and 6 kg of DCP for 2 hours, then mix evenly, and feed nitrogen into the container of the screw extruder for 5 minutes to remove oxygen. The mixed material is put into the hopper of the twin-screw extruder, extruded through melting reaction, and granulated into antibacterial particles. Among them, the temperature settings of each heating zone of the screw are: Zone 1: 230°C; Zone 2: 240°C; Zone 3: 250°C; Zone 4: 245°C; Zone 5: 245°C; Zone 6: 250; Zone 7: 250°C ; Head: 260 ° C; residence time 2 ~ 3min. The pressure is 15MPa. Get modified PA66 slices.

The mass ratio of the above slices is 60% PET: 40% PA6, dried separately, and then filtered and melted through the respective screw extruders, and then enters the two-component spinning unit, and is sprayed out through the spinneret containing polyester and nylon. The fibers of the components are blown by cold wind, stretched by the airflow of 5000m/min, laid into a fiber web, and then enter the hydroentanglement machine for high-pressure hydroentanglement, split the fibers into superfine fibers and fix them into non-woven fabrics, and dry them.

Soak the above-mentioned non-woven fabric in a mixed solution of TX-100 with a concentration of 1500 ppm active chlorine and 0.05% mass fraction for 30 minutes. Then rinse with excess deionized water and dry.

Example 10

1000 kg of polyethylene terephthalate (PET), 200 kg of AAM, and 6 kg of DCP were dried for 2 hours, then mixed uniformly, and nitrogen was introduced into the container of the screw extruder for 5 minutes to remove oxygen. The mixed material is put into the hopper of the twin-screw extruder, extruded through melting reaction, and granulated into antibacterial particles. Among them, the temperature settings of each heating zone of the screw are: Zone 1: 230°C; Zone 2: 240°C; Zone 3: 250°C; Zone 4: 245°C; Zone 5: 245°C; Zone 6: 250; Zone 7: 250°C ; Head: 260 ° C; residence time 2 ~ 3min. The pressure is 15MPa. Obtain modified PET slices.

Dry 1000 kg of polyhexamethylenediamine adipic acid (PA66), 10 kg of NTBA, and 1 kg of DCP for 2 hours, then mix well, and feed nitrogen into the container of the screw extruder for 5 minutes to remove oxygen. The mixed material is put into the hopper of the twin-screw extruder, extruded through melting reaction, and granulated into antibacterial particles. Among them, the temperature settings of each heating zone of the screw are: Zone 1: 230°C; Zone 2: 240°C; Zone 3: 250°C; Zone 4: 245°C; Zone 5: 245°C; Zone 6: 250; Zone 7: 250°C ; Head: 260 ° C; residence time 2 ~ 3min. The pressure is 15MPa. Get modified PA66 slices.

The mass ratio of the above slices is 80% PET: 20% PA6 and dried separately, and then filtered and melted through the respective screw extruders, and then enters the two-component spinning unit, and is sprayed out through the spinneret containing polyester and nylon. The fibers of the components are blown by cold wind, stretched by the airflow of 5000m/min, laid into a fiber web, and then enter the hydroentanglement machine for high-pressure hydroentanglement, split the fibers into superfine fibers and fix them into non-woven fabrics, and dry them.

Soak the above-mentioned non-woven fabric in a mixed solution of TX-100 with a concentration of 1500 ppm active chlorine and 0.05% mass fraction for 30 minutes. Then rinse with excess deionized water and dry.

Example 11

1000 kg of polyethylene terephthalate (PET), 100 kg of MAM, and 4 kg of DCP were dried for 2 hours, then mixed uniformly, and nitrogen was introduced into the container of the screw extruder for 5 minutes to remove oxygen. The mixed material is put into the hopper of the twin-screw extruder, extruded through melting reaction, and granulated into antibacterial particles. Among them, the temperature settings of each heating zone of the screw are: Zone 1: 230°C; Zone 2: 240°C; Zone 3: 250°C; Zone 4: 245°C; Zone 5: 245°C; Zone 6: 250; Zone 7: 250°C ; Head: 260 ° C; residence time 2 ~ 3min. The pressure is 15MPa. PET slices containing specific functional groups in side chains were obtained.

Dry 1000 kg of polyhexamethylenediamine adipic acid (PA66), 100 kg of NDAM, and 4 kg of DTBHY for 2 hours, then mix evenly, and pass nitrogen into the container of the twin-screw extruder for 5 minutes to remove oxygen. The mixed material is put into the hopper of the twin-screw extruder, extruded through melting reaction, and granulated into antibacterial particles. Among them, the temperature settings of each heating zone of the screw are: Zone 1: 230°C; Zone 2: 240°C; Zone 3: 250°C; Zone 4: 245°C; Zone 5: 245°C; Zone 6: 250; Zone 7: 250°C ; Head: 260 ° C; residence time 2 ~ 3min. The pressure is 15MPa. Get modified PA66 slices.

The mass ratio of the above slices is 80% PET: 20% PA6 and dried separately, and then filtered and melted through the respective screw extruders, and then enters the two-component spinning unit, and is sprayed out through the spinneret containing polyester and nylon. The fibers of the components are blown by cold wind, stretched by the airflow of 5000m/min, laid into a fiber web, and then enter the hydroentanglement machine for high-pressure hydroentanglement, split the fibers into superfine fibers and fix them into non-woven fabrics, and dry them.

Soak the above-mentioned non-woven fabric in a mixed solution of TX-100 with a concentration of 1500 ppm active chlorine and 0.05% mass fraction for 30 minutes. Then rinse with excess deionized water and dry.

Example 12

1000 kg of polyethylene terephthalate (PET), 10 kg of VBDMH, and 1 kg of DCP were dried for 2 hours, then mixed uniformly, and nitrogen was introduced into the container of the screw extruder for 5 minutes to remove oxygen. The mixed material is put into the hopper of the twin-screw extruder, extruded through melting reaction, and granulated into antibacterial particles. Among them, the temperature settings of each heating zone of the screw are: zone 1 temperature: 230°C; zone 2: 240°C; zone 3: 250°C; zone 4: 245°C; zone 5: 245°C; zone 6: 250°C; zone 7: 250°C ; Head: 260 ° C; residence time 2 ~ 3min. The pressure is 15MPa. PET slices containing specific functional groups in side chains were obtained.

Dry 1000 kg of polyhexamethylenediamine adipic acid (PA66), 200 kg of ADMH, and 6 kg of DTBHY for 2 hours, then mix evenly, and feed nitrogen into the container of the twin-screw extruder for 5 minutes to remove oxygen. The mixed material is put into the hopper of the twin-screw extruder, extruded through melting reaction, and granulated into antibacterial particles. Among them, the temperature settings of each heating zone of the screw are: Zone 1: 230°C; Zone 2: 240°C; Zone 3: 250°C; Zone 4: 245°C; Zone 5: 245°C; Zone 6: 250; Zone 7: 250°C ; Head: 260 ° C; residence time 2 ~ 3min. The pressure is 15MPa. Get modified PA66 slices.

The mass ratio of the above slices is 80% PET: 20% PA6 and dried separately, and then filtered and melted through the respective screw extruders, and then enters the two-component spinning unit, and is sprayed out through the spinneret containing polyester and nylon. The fibers of the components are blown by cold wind, stretched by the airflow of 5000m/min, laid into a fiber web, and then enter the hydroentanglement machine for high-pressure hydroentanglement, split the fibers into superfine fibers and fix them into non-woven fabrics, and dry them.

Soak the above-mentioned non-woven fabric in a mixed solution of TX-100 with a concentration of 1500 ppm active chlorine and 0.05% mass fraction for 30 minutes. Then rinse with excess deionized water and dry.

The multi-component antibacterial non-woven fabric of embodiment 1～10 is carried out sterilization test, and the mode of wherein processing of the cloth sample of embodiment is as follows:

A After spunbonding, wash it once with water and do a bactericidal test.

After B spunbonding, wash 10 times with water = do a bactericidal test.

After C sterilization, carry out the amine chlorination once, and then do the sterilization test.

After D sterilization, carry out amine chlorination for 10 times, and then do the sterilization test.

Antibacterial tests were carried out on the above-mentioned treated non-woven fabric samples using the following standards.

Washing resistance: the washing method adopts the AATCC123-1984 method.

Antibacterial performance test: Staphylococcus aureus (ATCC 6538) (Gram-negative bacteria) and Escherichia coli (8099) (Gram-positive bacteria) were used as test bacteria.

The antibacterial test method adopts the bacteria count method (AATCC 100-1988).

Test result shows, do the embodiment sample of processing A as above, after absorbing bacterium liquid for 10 minutes, the bactericidal rate of embodiment sample 1～10 is all above 99.8%, after absorbing bacterium liquid for 24 hours, embodiment 2, embodiment 5 , Embodiment 8, and Embodiment 10 can play good antibacterial effect, and the bactericidal rate is more than 98.8%.

Do the example samples of the above treatment B. After absorbing the bacterial solution for 10 minutes, the bactericidal rate of the examples 1 to 10 was above 99.0%. %above. Has good washing resistance.

Do the embodiment samples of the above treatment C, after drawing for 10 minutes, the sterilization rate of embodiment samples 1 to 10 is all at 97.4%, and after absorbing the bacterium solution for 24 hours, the sterilization rate of the embodiment samples is all at 91.4%, which is very good The recycling function.

The results showed that the multi-component antibacterial non-woven fabric had excellent antibacterial performance and washing resistance, and only a simple amine chlorination was needed to realize the non-woven antibacterial cycle function.

Claims (3)

1. A multi-component antibacterial non-woven fabric, characterized in that: the antibacterial non-woven fabric is mixed by 80% to 20% by mass percentage of modified polyamide and 20% to 80% by mass percentage of modified polyester. The spunbond spunlace process prepares the shape, and the following structure is covalently bonded on the surface of the non-woven fiber element: Wherein: R is H or tert-butyl, and R' is O or N. 2. a kind of multi-component antibacterial non-woven fabric according to claim 1, is characterized in that: described modified polyamide is polyamide, functional monomer containing amine structure, free radical initiator by mass fraction ratio 100: 1-10: 0.1-0.4 mixed, prepared by twin-screw reactive extrusion. 3. a kind of multi-component antibacterial non-woven fabric according to claim 1, is characterized in that: described modified polyester is polyester, the functional monomer containing amine structure, free radical initiator by mass and number ratio 100: 1-10: 0.1-0.4 mixed, prepared by twin-screw reactive extrusion.