阅读说明：本技术 一种含生物活性成分的口袋布及其制备方法 (Pocket cloth containing bioactive components and preparation method thereof ) 是由 黄效华 甄丽 池姗 于 2021-09-04 设计创作，主要内容包括：一种含生物活性成分的口袋布,所述含生物活性成分的口袋布对大肠杆菌抑菌率为97.5-97.8%,对金黄葡萄球菌抑菌率为95.7-96.1%,对白色念珠菌抑菌率为97.7-98.3%。本发明还提供一种含生物活性成分的口袋布的制备方法,所述制备方法包括溶胶-凝胶法包覆植物提取物、造粒、金属纤维改性、纺丝、并丝、织造。本发明制备的口袋布可以有效的防止静电产生,有良好的导电性,点对点电阻为6.5-6.7*10～(6)Ω,防静电等级为A级,同时导电性的耐久度高,80次洗涤后,点对点电阻为9.6-9.8*10～(6)Ω,防静电能力仍可保持A级,不锈钢纤维不出现外露现象。(A pocket cloth containing bioactive components has Escherichia coli inhibiting rate of 97.5-97.8%, and has antibacterial effect on Escherichia coliThe bacteriostasis rate of staphylococcus aureus is 95.7-96.1%, and the bacteriostasis rate of candida albicans is 97.7-98.3%. The invention also provides a preparation method of the pocket cloth containing the bioactive components, which comprises the steps of coating the plant extract by a sol-gel method, granulating, modifying the metal fiber, spinning, doubling and weaving. The pocket cloth prepared by the invention can effectively prevent static electricity, has good conductivity, and has point-to-point resistance of 6.5-6.7 x 10 6 Omega, antistatic grade is A grade, and the conductivity is high in durability, and after 80 times of washing, the point-to-point resistance is 9.6-9.8 x 10 6 Omega, the antistatic ability can still keep A level, and the stainless steel fiber is not exposed.)

1. The pocket cloth containing the bioactive components is characterized by having the bacteriostatic rate of 97.5-97.8% on escherichia coli, 95.7-96.1% on staphylococcus aureus and 97.7-98.3% on candida albicans.

2. A preparation method of a pocket cloth containing bioactive components is characterized by comprising the steps of coating a plant extract by a sol-gel method, granulating, modifying metal fibers, spinning, doubling and weaving.

3. The method for preparing a pocket fabric containing a bioactive ingredient according to claim 2, wherein:

coating the plant extract by the sol-gel method, uniformly mixing sodium alginate, starch and water, stirring at the temperature of 65-75 ℃ for 50-70min at 550r/min, adding the wormwood extract, the tea extract, the nano calcium carbonate and the nano montmorillonite, stirring at the temperature of 75-85 ℃ for 90-110min at 650r/min, and ultrasonically defoaming after stirring to obtain the sol containing the plant extract;

aging the sol containing plant extract at 24-26 deg.C for 22-26h, and lyophilizing to obtain lyophilized sol powder containing plant extract.

4. The method for preparing a pocket fabric containing a bioactive ingredient according to claim 3, wherein:

the sol containing the plant extract comprises the following components in parts by mass: 1.5-2.5 parts of sodium alginate, 2.5-3.5 parts of starch, 85-95 parts of water, 0.5-1.5 parts of wormwood extract, 0.3-0.7 part of tea extract, 0.2-0.4 part of nano calcium carbonate and 0.1-0.3 part of nano montmorillonite;

the nano calcium carbonate has the particle size of 28-32nm and the specific surface area of 20-22m 2/g;

the nano montmorillonite is sodium montmorillonite with particle size of 14-16 nm.

5. The method for preparing a pocket fabric containing a bioactive ingredient according to claim 2, wherein:

the granulation comprises the steps of premixing polylactic resin master batches, polyester resin master batches, plant extract-containing sol freeze-dried powder, a flexibilizer and an antioxidant for 8-12min to obtain a mixture, and then extruding and granulating to obtain plant extract-containing master batches;

the mixture comprises the following components in parts by mass: 18-22 parts of polylactic resin master batch, 35-45 parts of polyester resin master batch, 1.5-2.5 parts of sol freeze-dried powder containing plant extract, 0.5-1.5 parts of flexibilizer and 0.5-1.5 parts of antioxidant;

the toughening agent is polyvinyl acetate;

the antioxidant is TNP;

the number average molecular weight of the polylactic resin is 32000-37000 g/mol.

6. The method for preparing a pocket fabric containing a bioactive ingredient according to claim 2, wherein:

and modifying the metal fibers, namely connecting stainless steel fiber bundles with the diameter of 18-22 mu m into an anode of an electrolytic cell, wherein the electrolyte is H2SO4 solution with the mass concentration of 14-16%, the power supply adopts direct current for supplying power, firstly adjusting the current to 0.95-1.05A, treating for 18-22 minutes, then adjusting the current to 1.15-1.25A, treating for 13-17 minutes, taking out the stainless steel fiber bundles after the power supply is turned off, and cleaning and drying to obtain the modified stainless steel fibers.

7. The method for preparing a pocket fabric containing a bioactive ingredient according to claim 2, wherein:

and in the spinning step, the master batches containing the plant extract are subjected to melt spinning, the spinning speed is controlled to be 2800-3200m/min, the spinning outlet is connected with a cooling tank containing 24-26 ℃ antistatic liquid, photocuring is carried out after the spinning is carried out from the cooling tank, then cluster oiling is carried out, and the polyester fiber containing the plant extract is obtained by winding and forming.

8. The method for preparing a pocket fabric containing a bioactive ingredient according to claim 7, wherein:

the antistatic liquid comprises the following components in parts by mass: 4-6 parts of methyl methacrylate, 1.5-2.5 parts of glycerol, 2.5-3.5 parts of polyethylene glycol, 0.5-1.5 parts of nano carbon black, 3.5-4.5 parts of acrylic polyol and 0.8-1.2 parts of photoinitiator;

the particle size of the nano carbon black is 11-13 nm;

the average molecular weight of the acrylic polyol is 2000-2400;

the photoinitiator is 2-hydroxy-2-methyl-1-phenyl acetone;

the preparation method of the antistatic liquid comprises the steps of uniformly mixing methyl methacrylate, glycerol, polyethylene glycol, nano carbon black, acrylic polyol and a photoinitiator in specified parts, and keeping the temperature at 55-65 ℃ for 1.5-2.5 hours to obtain the antistatic liquid.

9. The method for preparing a pocket fabric containing a bioactive ingredient according to claim 7, wherein:

the photocuring is divided into primary curing and secondary curing, wherein the primary curing ultraviolet wave band is 410-430nm, the ultraviolet radiation time is 18-22s, and the illumination is 950-1050mW/cm 2; the second curing ultraviolet wave band is 410-430nm, the ultraviolet radiation time is 13-17s, and the illumination intensity is 750-850mW/cm 2.

10. The method for preparing a pocket fabric containing a bioactive ingredient according to claim 2, wherein:

the doubling, namely doubling 2-4 modified stainless steel fibers to serve as yarn cores, twisting the yarn cores by a two-for-one twister, wherein the twist is 2100-;

doubling 2-4 modified stainless steel fibers to serve as yarn cores, twisting the yarn cores by a two-for-one twister with the twist degree of 1400-;

the weaving is carried out by plain weaving, the weaving machine speed is 650-750r/min, the warp and weft are circulated at intervals of 1:1, the weaving transverse density WPC is 24-26, the longitudinal density CPC is 34-36, and the pocket cloth containing the bioactive components is obtained after the weaving is finished.

Technical Field

The invention relates to a pocket cloth containing bioactive components and a preparation method thereof, belonging to the field of textiles.

Background

Pocket cloth (English pocketing fabric) is plain cloth, and can be used as lining cloth, quilt lining, flour bag, rice bag, etc. of clothing pocket. The pocket cloth is of various varieties and mainly divided into 3 types, namely full chemical fiber, pure cotton and polyester cotton pocket cloth.

Wherein the pure cotton pocket cloth material is soft, the hygroscopicity is strong, the gas permeability is good, heat-resisting alkali-resisting, clean health, but it contracts easily, corrugates easily to easy balling-up after using, also not excellent enough in the aspect of intensity, the broken hole phenomenon can appear in long-time the use.

The fully chemical fiber pocket cloth is a high-molecular fabric, the fabric has high density, relatively high relative fastness, firmness and durability, strong wrinkle resistance and difficult wrinkle, and the fabric with unique characteristics such as high temperature resistance, radiation resistance, wear resistance, high elasticity, antibacterial property and the like can be produced by the chemical fiber processing technology at present, but the fabric also has the defects of poor hygroscopicity and air permeability, is easy to deform when heated and easy to generate static electricity, and the chemical fiber is harmful to human bodies after being used for a long time.

The polyester cotton pocket cloth is a fabric produced by blending polyester fibers and cotton fibers, can adapt to different purposes by controlling the fiber proportion, has the advantages of both the style of polyester and the cotton fabric, has better wear resistance under the dry and wet conditions, small shrinkage rate, difficult wrinkle and quick drying, but is easy to absorb oil stains, generate electrostatic absorption dust, can not be ironed at high temperature and soaked in boiling water, has poorer hygroscopicity and air permeability than pure cotton fabrics, is easy to fluff and nodulate at the friction part, has overhigh content of the polyester fibers, and can greatly reduce the comfort.

The antistatic performance is very important for pocket cloth, such as a flour bag, and accidents can happen if static electricity cannot be led out.

CN107893278B discloses a polyester cotton antistatic A-level functional fabric, through the design of the warp and weft density of the fabric and the arrangement ratio of the warp and weft yarns and the conductive yarns, the conductive yarns are mutually crossed in the warp direction and the weft direction of the fabric to form a grid fabric, meanwhile, the fabric obtains antistatic performance through the synergistic effect of an electrostatic finishing agent, after long-time use and rinsing, the conductive fibers are exposed, so that the fabric has reduced comfort strength, increased shrinkage rate and reduced comfort, the fabric is impregnated with the electrostatic finishing agent to enhance the antistatic performance and is only attached to the surface, so that the fabric gradually loses efficacy in the use process, and the antistatic effect is reduced.

CN108385242B discloses an antistatic, radiation-proof, flame-retardant and high-permeability fabric and a preparation method thereof, the fabric is formed by clamping a breathable core by warp clusters and weft clusters in a staggered manner, the cross seams of the warp clusters and the weft clusters on the two sides of the breathable core are coated with antistatic agents, and stainless steel fiber wires are conductive, so that an antistatic effect is obtained, after long-time use and rinsing, the conductive fibers are easily exposed, the fabric strength is reduced, the shrinkage rate is increased, the comfort is greatly reduced, the antistatic agents are coated at the cross seams, the adhesiveness is not good, and the antistatic effect is reduced due to falling off after long-time use.

In summary, the prior art has the following disadvantages:

(1) after the fabric is used for a long time and rinsed, the conductive fibers are easily exposed, so that the strength of the fabric is reduced, the shrinkage rate is increased, and the comfort level is sacrificed;

(2) the antistatic finishing agent and the antistatic agent for enhancing the antistatic performance have poor adhesion effect and can fall off after being used and rinsed for a long time, so that the antistatic performance is reduced.

Disclosure of Invention

The invention aims to overcome the defects in the prior art, provides the pocket cloth containing the bioactive components by modifying the metal fibers and improving the antistatic liquid and the preparation method thereof, and solves the problems of reduced antistatic effect, reduced cloth performance and discounted comfort degree caused by exposure of the conductive fibers and falling of the antistatic agent after multiple times of washing.

In order to solve the technical problems, the invention adopts the following technical scheme:

a pocket cloth containing bioactive components has an Escherichia coli inhibition rate of 97.5-97.8%, Staphylococcus aureus inhibition rate of 95.7-96.1%, and Candida albicans inhibition rate of 97.7-98.3%.

The following is a further improvement of the above technical solution:

the preparation method comprises the following steps:

coating the plant extract by the sol-gel method, uniformly mixing sodium alginate, starch and water, stirring at the temperature of 65-75 ℃ for 50-70min at 550r/min, adding the wormwood extract, the tea extract, the nano calcium carbonate and the nano montmorillonite, stirring at the temperature of 75-85 ℃ for 90-110min at 650r/min, and ultrasonically defoaming after stirring to obtain the sol containing the plant extract;

aging the sol containing plant extract at 24-26 deg.C for 22-26h, and lyophilizing to obtain lyophilized sol powder containing plant extract.

The sol containing the plant extract comprises the following components in parts by mass: 1.5-2.5 parts of sodium alginate, 2.5-3.5 parts of starch, 85-95 parts of water, 0.5-1.5 parts of wormwood extract, 0.3-0.7 part of tea extract, 0.2-0.4 part of nano calcium carbonate and 0.1-0.3 part of nano montmorillonite;

the nano calcium carbonate has the particle size of 28-32nm and the specific surface area of 20-22m²/g；

The nano montmorillonite is sodium montmorillonite with particle size of 14-16 nm.

The granulation comprises the steps of premixing polylactic resin master batches, polyester resin master batches, plant extract-containing sol freeze-dried powder, a flexibilizer and an antioxidant for 8-12min to obtain a mixture, and then extruding and granulating to obtain plant extract-containing master batches;

the mixture comprises the following components in parts by mass: 18-22 parts of polylactic resin master batch, 35-45 parts of polyester resin master batch, 1.5-2.5 parts of sol freeze-dried powder containing plant extract, 0.5-1.5 parts of flexibilizer and 0.5-1.5 parts of antioxidant.

The toughening agent is polyvinyl acetate;

the antioxidant is TNP;

the number average molecular weight of the polylactic resin is 32000-37000 g/mol.

Modifying the metal fiber, connecting a stainless steel fiber bundle with the diameter of 18-22 mu m into an anode of an electrolytic cell, wherein the electrolyte is H with the mass concentration of 14-16%₂SO₄And (3) supplying power to the solution by adopting direct current, firstly adjusting the current to 0.95-1.05A, treating for 18-22 minutes, then adjusting the current to 1.15-1.25A, treating for 13-17 minutes, taking out the stainless steel fiber bundle after turning off the power, and cleaning and drying to obtain the modified stainless steel fiber.

The spinning comprises the steps of carrying out melt spinning on master batches containing the plant extract, controlling the spinning speed at 2800-3200m/min, connecting a spinning outlet with a cooling tank containing 24-26 ℃ antistatic liquid, carrying out photocuring after spinning out of the cooling tank, then carrying out cluster oiling, and winding and forming to obtain the polyester fiber containing the plant extract;

the antistatic liquid comprises the following components in parts by mass: 4-6 parts of methyl methacrylate, 1.5-2.5 parts of glycerol, 2.5-3.5 parts of polyethylene glycol, 0.5-1.5 parts of nano carbon black, 3.5-4.5 parts of acrylic polyol and 0.8-1.2 parts of photoinitiator;

the particle size of the nano carbon black is 11-13 nm;

the average molecular weight of the acrylic polyol is 2000-2400;

the photoinitiator is 2-hydroxy-2-methyl-1-phenyl acetone;

the preparation method of the antistatic liquid comprises the steps of uniformly mixing methyl methacrylate, glycerol, polyethylene glycol, nano carbon black, acrylic polyol and a photoinitiator in specified parts, and preserving heat at 55-65 ℃ for 1.5-2.5 hours to obtain the antistatic liquid;

the photocuring is divided into primary curing and secondary curing, wherein the primary curing ultraviolet band is 410-430nm, the ultraviolet radiation time is 18-22s, and the illumination is 950-1050mW/cm²(ii) a The second curing ultraviolet wave band is 410-430nm, the ultraviolet radiation time is 13-17s, and the illumination intensity is 750-850mW/cm²。

The doubling, namely doubling 2-4 modified stainless steel fibers to serve as yarn cores, twisting the yarn cores by a two-for-one twister, wherein the twist is 2100-;

doubling 2-4 modified stainless steel fibers to serve as yarn cores, twisting the yarn cores by a two-for-one twister with the twist degree of 1400-.

The weaving is carried out by plain weaving, the weaving machine speed is 650-750r/min, the warp and weft are circulated at intervals of 1:1, the weaving transverse density WPC is 24-26, the longitudinal density CPC is 34-36, and the pocket cloth containing the bioactive components is obtained after the weaving is finished.

Compared with the prior art, the invention has the following beneficial effects:

the pocket cloth prepared by the invention has good bacteriostasis, the bacteriostasis rate to escherichia coli is 97.5-97.8%, the bacteriostasis rate to staphylococcus aureus is 95.7-96.1%, and the bacteriostasis rate to candida albicans is 97.7-98.3%;

the pocket cloth prepared by the invention can effectively prevent static electricity, has good conductivity, and has point-to-point resistance of 6.5-6.7 x 10⁶Omega, antistatic grade is A grade, dust is not easy to be stained, and the durability of the conductivity is high, after 80 times of washing, the point-to-point resistance is 9.6-9.8 x 10⁶Omega, the antistatic ability can still maintain A level, and the stainless steel fiber is not exposed;

the pocket cloth prepared by the invention has good breaking strength, the warp breaking strength 770-780N, the weft breaking strength 530-540N, after 80 times of washing, the warp breaking strength 715-730N, the weft breaking strength 480-500N, the durability is stronger, and holes are not easy to be broken;

the pocket fabric prepared by the invention has small washing size change rate, can not shrink greatly after washing, the warp direction size change rate is-1.3-1.4%, the weft direction size change rate is-1.5-1.6%, after 80 times of washing, the warp direction size change rate is-1.4-1.5%, and the weft direction size change rate is-1.7-1.8%;

the pocket cloth prepared by the invention has good air permeability, and the air permeability is 33-35 mm/s.

Detailed Description

Example 1

(1) Sol-gel method for coating plant extract

Mixing sodium alginate, starch and water uniformly, stirring at 70 deg.C for 60min at 500r/min, adding folium Artemisiae Argyi extract, folium Camelliae sinensis extract, nano calcium carbonate and nano montmorillonite, stirring at 80 deg.C for 100min at 600r/min, stirring, and ultrasonically defoaming to obtain sol containing plant extract.

The sol containing the plant extract comprises the following components in parts by mass: 2 parts of sodium alginate, 3 parts of starch, 90 parts of water, 1 part of wormwood extract, 0.5 part of tea extract, 0.3 part of nano calcium carbonate and 0.2 part of nano montmorillonite;

the nano calcium carbonate has the particle size of 30nm and the specific surface area of 21m²/g；

The nano montmorillonite is sodium montmorillonite with the particle size of 15 nm;

and then aging the sol containing the plant extract at 25 ℃ for 24h, and finally placing the sol containing the plant extract in a freeze dryer for freeze drying to obtain the sol freeze-dried powder containing the plant extract.

(2) Granulating

Premixing polylactic resin master batches, polyester resin master batches, plant extract-containing sol freeze-dried powder, a flexibilizer and an antioxidant for 10min to obtain a mixture, and then performing melt extrusion and granulation on the mixture through a double-screw extruder to obtain plant extract-containing master batches;

the mixture comprises the following components in parts by mass: 20 parts of polylactic resin master batch, 40 parts of polyester resin master batch, 2 parts of sol freeze-dried powder containing plant extract, 1 part of flexibilizer and 1 part of antioxidant;

the toughening agent is polyvinyl acetate;

the antioxidant is TNP (trinonylphenyl phosphite);

the number average molecular weight of the polylactic acid resin is 35000 g/mol.

(3) Modification of metal fibers

Connecting stainless steel fiber bundle with diameter of 20 μm to anode of electrolytic cell, wherein the electrolyte is H with mass concentration of 15%₂SO₄The solution and the power supply are powered by a direct current power supply, the current is firstly adjusted to 1.0A, the treatment is carried out for 20 minutes, then the current is adjusted to 1.2A, the treatment is carried out for 15 minutes, the power supply is turned off, the stainless steel fiber bundle is taken out, the surface of the fiber bundle is cleaned by clear water, the modified stainless steel fiber is obtained by drying, compact and uniform pores can be obtained on the surface of the metal fiber, and the diameter of the modified fiber is not obviously changed.

(4) Spinning

Sending the master batches containing the plant extract into a spinning machine for melt spinning, controlling the spinning speed at 3000m/min, connecting a spinning outlet with a cooling tank containing antistatic liquid at 25 ℃, cooling while adhering the antistatic liquid by dipping the antistatic liquid, irradiating by ultraviolet rays after being taken out of the cooling tank for photocuring, bundling and oiling after photocuring, and winding and forming to obtain the polyester fiber containing the plant extract;

the antistatic liquid comprises the following components in parts by mass: 5 parts of methyl methacrylate, 2 parts of glycerol, 3 parts of polyethylene glycol, 1 part of nano carbon black, 4 parts of acrylic polyol and 1 part of photoinitiator.

The particle size of the nano carbon black is 12 nm;

the acrylic polyol has an average molecular weight of 2200;

the photoinitiator is 2-hydroxy-2-methyl-1-phenyl acetone;

the photocuring comprises primary curing and secondary curing, wherein the ultraviolet wave band of the primary curing is 420nm, the ultraviolet radiation time is 20s, and the illumination is 1000mW/cm²(ii) a The second curing ultraviolet wave band is 420nm, and the ultraviolet radiationThe time is 15s, and the illumination is 800mW/cm²；

The preparation method of the antistatic liquid comprises the steps of uniformly mixing methyl methacrylate, glycerol, polyethylene glycol, nano carbon black, acrylic polyol and a photoinitiator in specified parts, and keeping the temperature at 60 ℃ for 2 hours to obtain the antistatic liquid.

(5) Doubling, weaving

Doubling, namely doubling 3 modified stainless steel fibers to serve as yarn cores, twisting the yarn cores by a two-for-one twister with the twist degree of 2200 twist/m in a forward twisting direction, then twisting 30 polyester fibers containing plant extracts serving as coating fibers with the coating modified stainless steel fibers with the twist degree of 2200 twist/m in a reverse twisting direction to obtain warps;

doubling 3 modified stainless steel fibers to serve as yarn cores, twisting the yarn cores by a two-for-one twister with the twist degree of 1500 twists/m in a forward twisting direction, then twisting 10 polyester fibers containing plant extracts and 20 cotton fibers serving as coating fibers with the coating modified stainless steel fibers with the twist degree of 1500 twists/m in a reverse twisting direction to obtain weft yarns;

weaving, namely weaving in a plain weave at the speed of 700r/min, circulating the warp and weft at intervals of 1:1, weaving with the transverse density WPC of 25 and the longitudinal density CPC of 35 to obtain pocket cloth containing bioactive components;

the gram weight of the pocket cloth is 120g/m²。

The pocket cloth of the embodiment 1 has good bacteriostasis, the bacteriostasis rate to escherichia coli is 97.8%, the bacteriostasis rate to staphylococcus aureus is 96.1%, and the bacteriostasis rate to candida albicans is 98.3%;

the pocket fabric of example 1 was effective in preventing static electricity generation, had good conductivity, and had a point-to-point resistance of 6.5 x 10⁶Omega, antistatic grade is A grade, dust is not easy to be stained, and the durability of the conductivity is high, after 80 times of washing, the point-to-point resistance is 9.6 x 10⁶Omega, the antistatic ability can still maintain A level, and the stainless steel fiber is not exposed;

the pocket cloth of the embodiment 1 has good breaking strength, the warp breaking strength is 780N, the weft breaking strength is 540N, after 80 times of washing, the warp breaking strength is 730N, the weft breaking strength is 500N, the durability is stronger, and holes are not easy to be broken;

the pocket fabric of example 1 had a small change rate in water washing dimension, and did not shrink greatly after washing, with a change rate in warp dimension of-1.3% and a change rate in weft dimension of-1.5%, and after 80 washes, a change rate in warp dimension of-1.4% and a change rate in weft dimension of-1.7%;

the pocket fabric of example 1 had good air permeability, with an air permeability of 35 mm/s.

Comparative example 1

(1) Sol-gel method for coating plant extract

Mixing sodium alginate, starch and water uniformly, stirring at 70 deg.C for 60min at 500r/min, adding folium Artemisiae Argyi extract, folium Camelliae sinensis extract, nano calcium carbonate and nano montmorillonite, stirring at 80 deg.C for 100min at 600r/min, stirring, and ultrasonically defoaming to obtain sol containing plant extract.

The sol containing the plant extract comprises the following components in parts by mass: 2 parts of sodium alginate, 3 parts of starch, 90 parts of water, 1 part of wormwood extract, 0.5 part of tea extract, 0.3 part of nano calcium carbonate and 0.2 part of nano montmorillonite;

the nano calcium carbonate has the particle size of 30nm and the specific surface area of 21m²/g；

The nano montmorillonite is sodium montmorillonite with the particle size of 15 nm;

and then aging the sol containing the plant extract at 25 ℃ for 24h, and finally placing the sol containing the plant extract in a freeze dryer for freeze drying to obtain the sol freeze-dried powder containing the plant extract.

(2) Granulating

Premixing polylactic resin master batches, polyester resin master batches, plant extract-containing sol freeze-dried powder, a flexibilizer and an antioxidant for 10min to obtain a mixture, and then performing melt extrusion and granulation on the mixture through a double-screw extruder to obtain plant extract-containing master batches;

the mixture comprises the following components in parts by mass: 20 parts of polylactic resin master batch, 40 parts of polyester resin master batch, 2 parts of sol freeze-dried powder containing plant extract, 1 part of flexibilizer and 1 part of antioxidant;

the toughening agent is polyvinyl acetate;

the antioxidant is TNP (trinonylphenyl phosphite);

the number average molecular weight of the polylactic acid resin is 35000 g/mol;

(3) spinning

Sending the master batches containing the plant extract into a spinning machine for melt spinning, controlling the spinning speed at 3000m/min, connecting a spinning outlet with a cooling tank containing antistatic liquid at 25 ℃, cooling while adhering the antistatic liquid by dipping the antistatic liquid, irradiating by ultraviolet rays after being taken out of the cooling tank for photocuring, bundling and oiling after photocuring, and winding and forming to obtain the polyester fiber containing the plant extract;

the antistatic liquid comprises the following components in parts by mass: 5 parts of methyl methacrylate, 2 parts of glycerol, 3 parts of polyethylene glycol, 1 part of nano carbon black, 4 parts of acrylic polyol and 1 part of photoinitiator.

The particle size of the nano carbon black is 12 nm;

the acrylic polyol has an average molecular weight of 2200;

the photoinitiator is 2-hydroxy-2-methyl-1-phenyl acetone;

the photocuring comprises primary curing and secondary curing, wherein the ultraviolet wave band of the primary curing is 420nm, the ultraviolet radiation time is 20s, and the illumination is 1000mW/cm²(ii) a The second curing ultraviolet wave band is 420nm, the ultraviolet radiation time is 15s, and the illumination is 800mW/cm²；

The preparation method of the antistatic liquid comprises the steps of uniformly mixing methyl methacrylate, glycerol, polyethylene glycol, nano carbon black, acrylic polyol and a photoinitiator in specified parts, and keeping the temperature at 60 ℃ for 2 hours to obtain the antistatic liquid.

(4) Doubling, weaving

Doubling, namely doubling three stainless steel fibers with the diameter of 20 mu m to serve as yarn cores, twisting the yarn cores by a two-for-one twister with the twist of 2200 twists/m in the forward twisting direction, then twisting 30 polyester fibers containing plant extracts serving as coating fibers with the coating stainless steel fibers with the twist of 2200 twists/m in the reverse twisting direction to obtain warps;

doubling three stainless steel fibers with the diameter of 20 mu m to be used as yarn cores, twisting the yarn cores by a two-for-one twister with the twist of 1500 twists/m and the twisting direction being smooth twisting, then using 10 polyester fibers containing plant extracts and 20 cotton fibers as cladding fibers, twisting the cladding stainless steel fibers with the twist of 1500 twists/m and the twisting direction being reverse twisting to obtain wefts;

weaving, namely weaving in a plain weave at the speed of 700r/min, circulating the warp and weft at intervals of 1:1, weaving with the transverse density WPC of 25 and the longitudinal density CPC of 35 to obtain pocket cloth containing bioactive components;

the gram weight of the pocket is 123g/m²。

The pocket cloth of comparative example 1 has good antibacterial activity, the antibacterial rate to escherichia coli is 97.5%, the antibacterial rate to staphylococcus aureus is 95.8%, and the antibacterial rate to candida albicans is 98.1%;

comparative example 1 pocket distribution point-to-point resistance of 5.3 x 10⁶Omega, antistatic rating of A grade, point-to-point resistance of 3.2 x 10 after 80 washes⁸Omega, the antistatic grade is B grade;

the pocket fabric of comparative example 1 had a warp break strength of 730N, a weft break strength of 490N, and after 80 washes, a warp break strength of 580N and a weft break strength of 450N;

the pocket fabric washing rule of comparative example 1 had a warp dimension change rate of-1.6%, a weft dimension change rate of-1.9%, and after 80 washes, the warp dimension change rate was-2.0%, and the weft dimension change rate was-2.4%;

the air permeability of the pocket fabric of comparative example 1 was 28 mm/s.

The results of the same procedure except that the step of modifying the stainless steel fiber was omitted from example 1 showed that the durability of the antistatic effect of the resulting pocket fabric was lowered after many uses, the breaking strength in the warp and weft directions was deteriorated, and the shrinkage resistance of the fabric was deteriorated.

Comparative example 2

(1) Sol-gel method for coating plant extract

Mixing sodium alginate, starch and water uniformly, stirring at 70 deg.C for 60min at 500r/min, adding folium Artemisiae Argyi extract, folium Camelliae sinensis extract, nano calcium carbonate and nano montmorillonite, stirring at 80 deg.C for 100min at 600r/min, stirring, and ultrasonically defoaming to obtain sol containing plant extract.

The sol containing the plant extract comprises the following components in parts by mass: 2 parts of sodium alginate, 3 parts of starch, 90 parts of water, 1 part of wormwood extract, 0.5 part of tea extract, 0.3 part of nano calcium carbonate and 0.2 part of nano montmorillonite;

the nano calcium carbonate has the particle size of 30nm and the specific surface area of 21m²/g；

The nano montmorillonite is sodium montmorillonite with the particle size of 15 nm;

and then aging the sol containing the plant extract at 25 ℃ for 24h, and finally placing the sol containing the plant extract in a freeze dryer for freeze drying to obtain the sol freeze-dried powder containing the plant extract.

(2) Granulating

Premixing the polylactic resin master batch, the polyester resin master batch, the plant extract-containing sol freeze-dried powder, the flexibilizer and the antioxidant for 10min to obtain a mixture, and then performing melt extrusion and granulation on the mixture by a double-screw extruder to obtain the plant extract-containing master batch.

The mixture comprises the following components in parts by mass: 20 parts of polylactic resin master batch, 40 parts of polyester resin master batch, 2 parts of sol freeze-dried powder containing plant extract, 1 part of flexibilizer and 1 part of antioxidant;

the toughening agent is polyvinyl acetate;

the antioxidant is TNP (trinonylphenyl phosphite);

the number average molecular weight of the polylactic acid resin is 35000 g/mol.

(3) Modification of metal fibers

Stainless steel fiber bundle with diameter of 20 μm is connected to the anode of an electrolytic cell, and the electrolyte is 15% H₂SO₄The solution and the power supply are powered by a direct current power supply, the current is firstly adjusted to 1.0A, the treatment is carried out for 20 minutes, then the current is adjusted to 1.2A, the treatment is carried out for 15 minutes, the power supply is turned off, the stainless steel fiber bundle is taken out, the surface of the fiber bundle is cleaned by clear water, and the modified stainless steel fiber is obtained by drying, so that the surface of the metal fiber can obtain compact and uniform pores, and the diameter of the modified fiber has no obvious change.

(4) Spinning

Sending the master batches containing the plant extract into a spinning machine for melt spinning, controlling the spinning speed at 3000m/min, connecting a spinning outlet with a cooling tank containing antistatic liquid at 25 ℃, cooling while adhering the antistatic liquid by dipping the antistatic liquid, irradiating by ultraviolet rays after being taken out of the cooling tank for photocuring, bundling and oiling after photocuring, and winding and forming to obtain the polyester fiber containing the plant extract;

the antistatic liquid comprises the following components in parts by mass: 5 parts of methyl methacrylate, 2 parts of glycerol, 3 parts of polyethylene glycol, 4 parts of acrylic polyol and 1 part of photoinitiator.

The acrylic polyol has an average molecular weight of 2200;

the photoinitiator is 1-hydroxycyclohexyl phenyl ketone;

the photocuring is carried out, the ultraviolet wave band is 360nm, the ultraviolet radiation time is 40s, and the illumination is 800mW/cm²；

The preparation method of the antistatic liquid comprises the steps of uniformly mixing methyl methacrylate, glycerol, polyethylene glycol, acrylic polyol and a photoinitiator in specified parts, and keeping the temperature at 60 ℃ for 2 hours to obtain the antistatic liquid.

(5) Doubling, weaving

Doubling, namely doubling three modified stainless steel fibers to serve as a yarn core, twisting the yarn core by using a two-for-one twister, wherein the twist degree is 2200 twists/m, the twisting direction is smooth twisting, then using 30 polyester fibers containing plant extracts as coating fibers, twisting the coating stainless steel fibers, the twist degree is 2200 twists/m, and the twisting direction is reverse twisting, so that warp threads are obtained;

doubling three modified stainless steel fibers to serve as yarn cores, twisting the yarn cores by a two-for-one twister with the twist degree of 1500 twists/m and the twisting direction of the two-for-one twister being smooth twisting, then taking 10 polyester fibers containing plant extracts and 20 cotton fibers as cladding fibers, twisting the cladding stainless steel fibers with the twist degree of 1500 twists/m and the twisting direction of the two-for-one twister being reverse twisting to obtain weft yarns;

weaving, namely weaving in a plain weave at the speed of 700r/min, circulating the warp and weft at intervals of 1:1, weaving with the transverse density WPC of 25 and the longitudinal density CPC of 35 to obtain pocket cloth containing bioactive components;

the gram weight of the pocket cloth118/g/m²。

The pocket cloth of comparative example 2 has good bacteriostasis, with the bacteriostasis rate to escherichia coli being 96.9%, the bacteriostasis rate to staphylococcus aureus being 95.2%, and the bacteriostasis rate to candida albicans being 97.5%;

comparative example 2 pocket distribution point-to-point resistance 4.9 x 10⁶Omega, antistatic rating of A grade, point-to-point resistance of 4.9 x 10 after 80 washes⁸Omega, antistatic grade B grade.

The pocket fabric of comparative example 2 had a warp break tenacity 710N, a weft break tenacity 490N, and after 80 washes, a warp break tenacity 650N and a weft break tenacity 430N;

the pocket fabric washing rule of comparative example 2 had a warp dimension change rate of-1.7% and a weft dimension change rate of-1.8%, and after 80 washes, the warp dimension change rate was-2.0% and the weft dimension change rate was-2.2%;

the air permeability of the pocket fabric of comparative example 2 was 30 mm/s.

On the basis of the example 1, the types of the photo-curing photoinitiators and the curing parameters in the spinning process are changed, the rest steps are the same, and the result shows that the durability of the antistatic effect of the prepared pocket cloth after being used for multiple times is reduced.