Antibacterial anti-mite composite fabric as well as preparation method and application thereof

Abstract

The invention discloses an antibacterial anti-mite composite fabric and a preparation method and application thereof, and relates to the technical field of functional fabrics, the antibacterial anti-mite composite fabric comprises the following raw materials by mass: 10-20% of bamboo fiber, 10-20% of alginate fiber, and 60-80% of photo-thermal antibacterial modified cotton fiber; the photo-thermal antibacterial modified cotton fiber is prepared from the following raw materials in parts by weight: 1 to 2 parts of pretreated cotton fiber, 0.02 to 0.12 part of graphene oxide titanium dioxide composite material coated polydopamine-epsilon-polylysine antibacterial agent and 150 to 400 parts of water, the mass ratio of the pretreated cotton fiber to the graphene oxide titanium dioxide composite material coated polydopamine-epsilon-polylysine antibacterial agent is 1: (0.02-0.06). The composite fabric provided by the invention has excellent antibacterial rate and mite repelling rate, and also has excellent photo-thermal antibacterial and mite-killing characteristics.

Description

Technical Field

[0001] The present application relates to the technical field of functional fabrics, and particularly relates to an antibacterial and anti-mite composite fabric, a preparation method thereof, and an application thereof. Background Art

[0002] With the continuous upgrading of living standards, consumers have put forward higher requirements for the safety and health of the home environment. As a key carrier for protecting health, antibacterial and anti-mite textiles have increasingly become the focus of market attention. In the field of public health, the threat of bacteria has become a prominent challenge in global health governance. Due to their unique fiber structure and adsorption characteristics, textiles are extremely likely to become a breeding ground for free microorganisms in the air and then evolve into pathogenic colonies, posing a direct threat to groups with weaker immunity.

[0003] Research shows that natural fiber fabrics, due to their rich nutritional components such as carbohydrates, are more likely to become a direct carbon source for bacterial reproduction compared to synthetic fibers. At the same time, in the home microecosystem, mites, these arthropods that are difficult to distinguish with the naked eye, are widely hidden inside textiles such as bedding and upholstered furniture. Their secretions, metabolites, and remains contain powerful allergens, which can induce type I hypersensitivity reactions such as allergic rhinitis, atopic dermatitis, and allergic conjunctivitis, seriously affecting the quality of life of the occupants.

[0004] It is worth noting that textiles not only serve as a parasitic carrier for microorganisms but also become a transmission medium for pathogens during dynamic use. Dust mite allergens in the air can adhere to the fiber surface and spread through aerosolization during human activities, increasing the risk of cross-infection. Therefore, constructing a textile protection system with both broad-spectrum antibacterial and long-term anti-mite functions has become the key breakthrough point for blocking the "environment-human" pathogen transmission chain.

[0005] To address the above health challenges, developing composite fabrics with excellent antibacterial and anti-mite properties, through material science innovation and process upgrading, to build a biological barrier at the fiber interface and effectively inhibit the colonization of microorganisms and the breeding of dust mites, has great practical significance for improving the health quality of the home environment and ensuring the long-term well-being of the human body. Summary of the Invention

[0006] In order to provide a composite fabric with excellent antibacterial and anti-mite functions, the present application provides an antibacterial and anti-mite composite fabric, a preparation method thereof, and an application thereof.

[0007] The antibacterial and anti-mite composite fabric provided by the present application adopts the following technical solutions:

[0008] An antibacterial and anti-mite composite fabric, the raw materials by mass percentage include: 10-20% bamboo fiber, 10-20% seaweed fiber, 60-80% photo-thermal antibacterial modified cotton fiber;

[0009] The raw materials of the photothermal antibacterial modified cotton fiber include 1-2 parts by weight of pretreated cotton fiber, 0.02-0.12 parts by weight of graphene oxide titanium dioxide composite @ polydopamine-ε-polylysine antibacterial agent, and 150-400 parts by weight of water;

[0010] The mass ratio of the pretreated cotton fiber to the graphene oxide titanium dioxide composite @ polydopamine-ε-polylysine antibacterial agent is 1:0.02-0.06.

[0011] Preferably, the preparation method of the pretreated cotton fiber includes the following steps:

[0012] S1. Prepare a solution by mixing 30% hydrogen peroxide, sodium hydroxide, sodium silicate, surfactant and water by mass fraction, put the cotton fiber into it, carry out scouring and bleaching treatment in a water bath at 85-90 °C, with a liquor ratio of 1:25-35, and then take out the treated cotton fiber, wash it with water and dry it to obtain the scoured and bleached cotton fiber;

[0013] S2. Add the scoured and bleached cotton fiber to a sodium periodate solution, react with shaking for 2-3 h under lightless conditions at 40-50 °C, after the reaction is completed, immerse it in a glycerol solution for 30-60 min, and then wash it several times with distilled water.

[0014] Preferably, the parts by weight of 30% hydrogen peroxide, sodium hydroxide, sodium silicate, surfactant and water by mass fraction are 13-17 parts of 30% hydrogen peroxide, 4-6 parts of sodium hydroxide, 2-4 parts of sodium silicate, 2-3 parts of surfactant, and 1000 parts of water.

[0015] Preferably, the preparation method of the graphene oxide titanium dioxide composite @ polydopamine-ε-polylysine antibacterial agent includes the following steps:

[0016] S1. Add the graphene oxide titanium dioxide composite to a Tris-HCl buffer solution for ultrasonic dispersion, then add dopamine, stir and react at room temperature for 3-5 h, after the reaction is completed, collect the precipitate by centrifugation, wash it several times with deionized water and then vacuum dry it to obtain graphene oxide titanium dioxide composite @ polydopamine;

[0017] S2. Disperse the graphene oxide titanium dioxide composite @ polydopamine in a Tris-HCl buffer solution, ultrasonically treat it for 10-15 min, then add an ε-polylysine aqueous solution to the suspension, stir and react at room temperature in the dark for 12-15 h, after the reaction is completed, collect the precipitate by centrifugation and wash it several times with deionized water, and obtain the graphene oxide titanium dioxide composite @ polydopamine-ε-polylysine antibacterial agent after vacuum drying.

[0018] Preferably, the mass ratio of the graphene oxide-titanium dioxide composite material to dopamine is 1:3.5 - 5.

[0019] Preferably, the concentration of the ε-polylysine aqueous solution is 9 - 13 mg / mL; the solid-liquid ratio of the graphene oxide-titanium dioxide composite material @ polydopamine to the ε-polylysine aqueous solution is 1:0.3 - 0.5 mg / mL.

[0020] Preferably, the preparation method of the graphene oxide-titanium dioxide composite material includes the following steps:

[0021] By weight, add 0.01 - 0.03 parts of graphene oxide to 100 - 150 parts of deionized water, ultrasonically treat for 60 - 80 min, then simultaneously add 1 - 3 parts of titanium dioxide powder and 0.01 - 0.03 parts of nonylphenol polyoxyethylene ether, stir evenly, then add 19 - 30 parts of sodium hydroxide and 45 - 90 parts of deionized water, pour the mixed solution into a reaction kettle, carry out hydrothermal reaction at 150 - 170 °C for 6 - 8 h, after the reaction ends, collect the precipitate by centrifugation and wash it several times with deionized water, and obtain the graphene oxide-titanium dioxide composite material after drying.

[0022] The preparation method of an antibacterial and acarid-proof composite fabric provided by this application adopts the following technical scheme:

[0023] A preparation method of an antibacterial and acarid-proof composite fabric includes the following steps:

[0024] S1. Prepare photo-thermal antibacterial modified cotton fibers;

[0025] S2. Weigh bamboo fibers, seaweed fibers, and photo-thermal antibacterial modified cotton fibers in proportion; pre-treat the bamboo fibers and seaweed fibers respectively to obtain pretreated bamboo fibers and pretreated seaweed fibers;

[0026] S3. Blended the pretreated bamboo fibers, pretreated seaweed fibers, and photo-thermal antibacterial modified cotton fibers into yarns, with the roving weight per unit length being 2 - 3 g / 10 m, the roving twist coefficient being 150 - 170, the center distance of the flyer of the fine yarn being 2 - 4 mm, the twist coefficient of the fine yarn being 400 - 450, and the front roller speed of the fine yarn being 150 - 200 r / min to obtain blended yarns;

[0027] S4. Weave the blended yarns according to the warp density of 150 - 170 ends / 10 cm and the weft density of 100 - 110 ends / 10 cm to obtain the antibacterial and acarid-proof composite fabric.

[0028] Preferably, the method for respectively pre-treating the bamboo fibers and seaweed fibers includes the following steps:

[0029] Soak seaweed fibers and bamboo fibers separately in a monomer of methacryloyloxyethyl trimethyl ammonium chloride with a mass fraction of 10%, then place them in a vacuum oven at 60 - 70 °C for drying for 1.5 - 3 h, rinse with deionized water and then dry in a vacuum oven to obtain methacryloyloxyethyl trimethyl ammonium chloride-filled seaweed fibers and methacryloyloxyethyl trimethyl ammonium chloride-filled bamboo fibers; then perform plasma pretreatment on the methacryloyloxyethyl trimethyl ammonium chloride-filled seaweed fibers and methacryloyloxyethyl trimethyl ammonium chloride-filled bamboo fibers, and thus obtain pretreated bamboo fibers and pretreated seaweed fibers.

[0030] The application of an antibacterial and acarid-proof composite fabric provided by the present application adopts the following technical scheme:

[0031] The application of an antibacterial and acarid-proof composite fabric, the application of the antibacterial and acarid-proof composite fabric in the fields of bedding, curtains, clothing, medical supplies, etc.

[0032] In summary, the present application includes at least one of the following beneficial technical effects:

[0033] 1. A kind of photothermal antibacterial modified cotton fiber provided by the present application, using graphene oxide titanium dioxide composite @ polydopamine-ε-polylysine antibacterial agent to crosslink and modify cotton fibers, can have a high photothermal conversion efficiency under near-infrared (NIR) light irradiation, kill bacteria and prevent the formation of biofilm structure by means of physical heating, and has a very high antibacterial efficiency.

[0034] 2. The seaweed fibers adopted in the present application have natural antibacterial and acarid-proof properties, and have good antibacterial rates against Escherichia coli and Staphylococcus aureus. Acting synergistically with the antibacterial component (bamboo quinone) of bamboo fibers, it can significantly inhibit the growth of bacteria and mites and keep the fabric clean and hygienic; by performing plasma pretreatment on seaweed fibers and bamboo fibers, salt-free and alkali-free dyeing of seaweed fibers and bamboo fibers can be realized, better dyeing effects can be obtained, and the roughness of the fiber surface is increased, and the fiber cohesion and spinnability are increased. Specific embodiments

[0035] The following further elaborates the present application in detail with reference to examples.

[0036] The chemical reagents used in the preparation examples, examples and comparative examples provided by the present invention are all commercially available products.

[0037] Preparation example 1

[0038] S1. Add 0.01 g of graphene oxide to 100 g of deionized water, ultrasonically treat for 60 min, then simultaneously add 1 g of titanium dioxide powder and 0.01 g of nonylphenol polyoxyethylene ether, stir evenly, add 19 g of sodium hydroxide and 45 g of deionized water, pour the mixed solution into a reaction kettle, and carry out hydrothermal reaction at 150 °C for 8 h. After the reaction, collect the precipitate by centrifugation and wash it several times with deionized water. After drying, a graphene oxide-titanium dioxide composite material is obtained;

[0039] S2. Add 60 mg of the graphene oxide-titanium dioxide composite material to 105 mL of Tris-HCl buffer solution with a pH of 8.5 and ultrasonically disperse it. Then add 210 mg of dopamine and stir and react at room temperature for 3 h. After the reaction, collect the precipitate by centrifugation, wash it 3 times with deionized water, and vacuum dry it at 40 °C to obtain a graphene oxide-titanium dioxide composite material@polydopamine;

[0040] S3. Disperse 20 mg of the graphene oxide-titanium dioxide composite material@polydopamine in 35 mL of Tris-HCl buffer solution with a pH of 8.5, ultrasonically treat for 10 min, then add 6 mL of an ε-polylysine aqueous solution with a concentration of 13 mg / mL to the suspension, stir and react in the dark at room temperature for 12 h. After the reaction, collect the precipitate by centrifugation and wash it 3 times with deionized water, and vacuum dry it at 40 °C to obtain a graphene oxide-titanium dioxide composite material@polydopamine-ε-polylysine antibacterial agent.

[0041] Preparation Example 2

[0042] S1. Add 0.02 g of graphene oxide to 125 g of deionized water, ultrasonically treat for 70 min, then simultaneously add 2 g of titanium dioxide powder and 0.02 g of nonylphenol polyoxyethylene ether, stir evenly, add 25 g of sodium hydroxide and 58 g of deionized water, pour the mixed solution into a reaction kettle, and carry out hydrothermal reaction at 160 °C for 7 h. After the reaction, collect the precipitate by centrifugation and wash it several times with deionized water. After drying, a graphene oxide-titanium dioxide composite material is obtained;

[0043] S2. Add 60 mg of the graphene oxide-titanium dioxide composite material to 115 mL of Tris-HCl buffer solution with a pH of 8.5 and ultrasonically disperse it. Then add 255 mg of dopamine and stir and react at room temperature for 4 h. After the reaction, collect the precipitate by centrifugation, wash it 3 times with deionized water, and vacuum dry it at 45 °C to obtain a graphene oxide-titanium dioxide composite material@polydopamine;

[0044] S3. Disperse 20 mg of graphene oxide-titanium dioxide composite @ polydopamine in 40 mL of Tris-HCl buffer solution with a pH of 8.5, ultrasonically treat for 13 min, then add 8 mL of ε-polylysine aqueous solution with a concentration of 11 mg / mL to the suspension, stir and react under dark at room temperature for 13.5 h. After the reaction, collect the precipitate by centrifugation and wash it 3 times with deionized water, and then vacuum dry at 45 °C to obtain the graphene oxide-titanium dioxide composite @ polydopamine-ε-polylysine antibacterial agent.

[0045] Preparation Example 3

[0046] S1. Add 0.03 g of graphene oxide to 150 g of deionized water, ultrasonically treat for 80 min, then simultaneously add 3 g of titanium dioxide powder and 0.03 g of nonylphenol polyoxyethylene ether, stir evenly, then add 30 g of sodium hydroxide and 90 g of deionized water, pour the mixed solution into a reaction kettle, carry out hydrothermal reaction at 170 °C for 6 h. After the reaction, collect the precipitate by centrifugation and wash it several times with deionized water, and dry it to obtain the graphene oxide-titanium dioxide composite.

[0047] S2. Add 60 mg of graphene oxide-titanium dioxide composite to 125 mL of Tris-HCl buffer solution with a pH of 8.5 and ultrasonically disperse it, then add 300 mg of dopamine, stir and react at room temperature for 5 h. After the reaction, collect the precipitate by centrifugation, wash it 3 times with deionized water and then vacuum dry at 50 °C to obtain the graphene oxide-titanium dioxide composite @ polydopamine.

[0048] S3. Disperse 20 mg of graphene oxide-titanium dioxide composite @ polydopamine in 45 mL of Tris-HCl buffer solution with a pH of 8.5, ultrasonically treat for 15 min, then add 10 mL of ε-polylysine aqueous solution with a concentration of 9 mg / mL to the suspension, stir and react under dark at room temperature for 15 h. After the reaction, collect the precipitate by centrifugation and wash it 3 times with deionized water, and then vacuum dry at 50 °C to obtain the graphene oxide-titanium dioxide composite @ polydopamine-ε-polylysine antibacterial agent.

[0049] Example 1

[0050] S1. Prepare the photothermal antibacterial modified cotton fiber, and the specific preparation method is as follows:

[0051] S11. Prepare a solution by mixing 13 g of 30% hydrogen peroxide, 4 g of sodium hydroxide, 2 g of sodium silicate, 2 g of surfactant and 1000 g of water, put the cotton fiber into it, carry out scouring and bleaching treatment in a water bath at 85 °C with a bath ratio of 1:25, then take out the treated cotton fiber, wash it with water and dry it to obtain the scoured and bleached cotton fiber.

[0052] S12. Add the scoured cotton fibers to a sodium periodate solution, and react with shaking for 2 h under lightless conditions at 40 °C. After the reaction is completed, immerse them in a glycerol solution for 30 min, and then wash them 3 times with distilled water to obtain the pretreated cotton fibers;

[0053] S13. Immerse 1 g of the pretreated cotton fibers in 150 g of deionized water, add 0.02 g of the graphene oxide-titanium dioxide composite @ polydopamine-ε-polylysine antibacterial agent prepared in Preparation Example 1, and stir at 25 °C for 12 h. After that, ultrasonically clean the product for 10 min, then rinse it with deionized water, and dry it in a forced-air oven at 60 °C to obtain the photothermal antibacterial modified cotton fibers;

[0054] S2. Weigh 10 g of bamboo fibers, 10 g of seaweed fibers, and 80 g of photothermal antibacterial modified cotton fibers according to the ratio; Pretreat the bamboo fibers and seaweed fibers separately, and the operation process is as follows:

[0055] Immerse the bamboo fibers and seaweed fibers separately in a 10% (mass fraction) methacryloyloxyethyl trimethyl ammonium chloride monomer, then place them in a vacuum oven at 60 °C for 1.5 h, rinse them with deionized water, and then dry them in a vacuum oven to obtain methacryloyloxyethyl trimethyl ammonium chloride-filled seaweed fibers and methacryloyloxyethyl trimethyl ammonium chloride-filled bamboo fibers; Then perform plasma pretreatment on the methacryloyloxyethyl trimethyl ammonium chloride-filled seaweed fibers and methacryloyloxyethyl trimethyl ammonium chloride-filled bamboo fibers. The plasma pretreatment conditions are: voltage 260 V, frequency 19 kHz, duty cycle 40%, moving speed 3 m / min, working gas is high-purity nitrogen, gas flow rate 800 L / h, and the distance from the nozzle to the sample is 5 cm to obtain the pretreated bamboo fibers and pretreated seaweed fibers;

[0056] S3. Blended spin the pretreated bamboo fibers, pretreated seaweed fibers, and photothermal antibacterial modified cotton fibers into yarns. The roving count is 2 g / 10 m, the roving twist factor is 150, the center distance of the flyer of the fine yarn is 2 mm, the twist factor of the fine yarn is 400, and the front roller speed of the fine yarn is 150 r / min to obtain blended yarns;

[0057] S4. Weave the blended yarns according to a warp density of 150 ends / 10 cm and a weft density of 100 ends / 10 cm to obtain the antibacterial and mite-proof composite fabric.

[0058] Example 2

[0059] S1. Prepare photothermal antibacterial modified cotton fibers, and the specific preparation method is as follows:

[0060] S11. Prepare a solution by mixing 15 g of hydrogen peroxide with a mass fraction of 30%, 5 g of sodium hydroxide, 3 g of sodium silicate, 2.5 g of surfactant and 1000 g of water. Immerse cotton fibers in the solution and perform scouring and bleaching treatment in a water bath at 88 °C with a liquor ratio of 1:30. Then take out the treated cotton fibers, wash them with water and dry them to obtain scoured and bleached cotton fibers;

[0061] S12. Add the scoured and bleached cotton fibers to a sodium periodate solution and react with shaking for 2.5 h under lightless conditions at 45 °C. After the reaction is completed, immerse them in a glycerol solution for 45 min, and then wash them 3 times with distilled water to obtain pretreated cotton fibers;

[0062] S13. Immerse 1.5 g of pretreated cotton fibers in 275 g of deionized water, add 0.03 g of the graphene oxide-titanium dioxide composite @ polydopamine-ε-polylysine antibacterial agent prepared in Preparation Example 1, stir at 31 °C for 18 h. After completion, ultrasonically clean the product for 12 min, then rinse with deionized water, and dry it in a forced-air oven at 65 °C to obtain photothermal antibacterial modified cotton fibers;

[0063] S2. Weigh 10 g of bamboo fibers, 10 g of seaweed fibers and 80 g of photothermal antibacterial modified cotton fibers in proportion; Pretreat the bamboo fibers and seaweed fibers separately, and the operation process is as follows:

[0064] Immerse the bamboo fibers and seaweed fibers separately in a methacryloyloxyethyl trimethyl ammonium chloride monomer with a mass fraction of 10%, then place them in a vacuum oven at 65 °C for 2.5 h, rinse with deionized water and then dry in a vacuum oven to obtain methacryloyloxyethyl trimethyl ammonium chloride-filled seaweed fibers and methacryloyloxyethyl trimethyl ammonium chloride-filled bamboo fibers; Then perform plasma pretreatment on the methacryloyloxyethyl trimethyl ammonium chloride-filled seaweed fibers and methacryloyloxyethyl trimethyl ammonium chloride-filled bamboo fibers. Plasma pretreatment conditions: voltage 260 V, frequency 19 kHz, duty cycle 40%, moving speed 3 m / min, working gas is high-purity nitrogen, gas flow rate 800 L / h, distance from nozzle to sample is 5 cm, to obtain pretreated bamboo fibers and pretreated seaweed fibers;

[0065] S3. Blended spin the pretreated bamboo fibers, pretreated seaweed fibers and photothermal antibacterial modified cotton fibers into yarns. The roving count is 2.5 g / 10 m, the roving twist coefficient is 160, the center distance of the flyer of the spinning frame is 3 mm, the spinning twist coefficient is 420, and the front roller speed of the spinning frame is 180 r / min to obtain blended yarns;

[0066] S4. Weave the blended yarns according to a warp density of 160 picks / 10 cm and a weft density of 105 picks / 10 cm to obtain an antibacterial and mite-proof composite fabric.

[0067] Example 3

[0068] S1. Prepare the photothermal antibacterial modified cotton fiber, and the specific preparation method is as follows:

[0069] S11. Prepare a solution by mixing 17 g of hydrogen peroxide with a mass fraction of 30%, 6 g of sodium hydroxide, 4 g of sodium silicate, 3 g of surfactant and 1000 g of water. Put the cotton fiber into it and carry out scouring and bleaching treatment in a water bath at 90 °C with a liquor ratio of 1:35. Then take out the treated cotton fiber, wash it with water and dry it to obtain the scoured and bleached cotton fiber;

[0070] S12. Add the scoured and bleached cotton fiber to the sodium periodate solution, and carry out an oscillating reaction at 50 °C in the dark for 3 h. After the reaction is completed, immerse it in the glycerol solution for 60 min, and then wash it 3 times with distilled water to obtain the pretreated cotton fiber;

[0071] S13. Immerse 2 g of the pretreated cotton fiber in 400 g of deionized water, add 0.04 g of the graphene oxide-titanium dioxide composite @ polydopamine-ε-polylysine antibacterial agent prepared in Preparation Example 1, stir at 37 °C for 24 h. After completion, ultrasonically clean the product for 15 min, then rinse it with deionized water, and place it in a blast drying oven at 70 °C to dry, that is, obtain the photothermal antibacterial modified cotton fiber;

[0072] S2. Weigh 10 g of bamboo fiber, 10 g of seaweed fiber and 80 g of photothermal antibacterial modified cotton fiber according to the ratio; respectively carry out pretreatment on the bamboo fiber and the seaweed fiber, and the operation process is as follows:

[0073] Immerse the bamboo fiber and the seaweed fiber in the methacryloyloxyethyl trimethyl ammonium chloride monomer with a mass fraction of 10% respectively, then place them in a vacuum oven at 70 °C for 3 h, rinse them with deionized water and then dry them in the vacuum oven to obtain the methacryloyloxyethyl trimethyl ammonium chloride-filled seaweed fiber and the methacryloyloxyethyl trimethyl ammonium chloride-filled bamboo fiber; then carry out plasma pretreatment on the methacryloyloxyethyl trimethyl ammonium chloride-filled seaweed fiber and the methacryloyloxyethyl trimethyl ammonium chloride-filled bamboo fiber. Plasma pretreatment conditions: voltage 260 V, frequency 19 kHz, duty cycle 40%, moving speed 3 m / min, working gas is high-purity nitrogen, gas flow rate 800 L / h, distance from the nozzle to the sample is 5 cm, that is, obtain the pretreated bamboo fiber and the pretreated seaweed fiber;

[0074] S3. Blended spin the pretreated bamboo fiber, the pretreated seaweed fiber and the photothermal antibacterial modified cotton fiber into yarn, the roving count is 3 g / 10 m, the roving twist factor is 170, the center distance of the flyer of the spun yarn is 4 mm, the twist factor of the spun yarn is 450, and the front roller speed of the spun yarn is 200 r / min to obtain the blended yarn;

[0075] S4. Weave the blended yarn according to the warp density of 170 threads / 10 cm and the weft density of 110 threads / 10 cm to obtain the antibacterial and mite-proof composite fabric.

[0076] Example 4

[0077] The difference between Example 4 and Example 1 is that in Example 4, the pre-treated cotton fiber used in S13 is 1 g, and the graphene oxide titanium dioxide composite @ polydopamine-ε-polylysine antibacterial agent prepared from Preparation Example 1 is 0.04 g.

[0078] Example 5

[0079] The difference between Example 5 and Example 1 is that in Example 5, the pre-treated cotton fiber used in S13 is 1 g, and the graphene oxide titanium dioxide composite @ polydopamine-ε-polylysine antibacterial agent prepared from Preparation Example 1 is 0.06 g.

[0080] Example 6

[0081] The difference between Example 6 and Example 1 is that in Example 6, the graphene oxide titanium dioxide composite @ polydopamine-ε-polylysine antibacterial agent used in S13 is prepared from Preparation Example 2.

[0082] Example 7

[0083] The difference between Example 7 and Example 1 is that in Example 7, the graphene oxide titanium dioxide composite @ polydopamine-ε-polylysine antibacterial agent used in S13 is prepared from Preparation Example 3.

[0084] Example 8

[0085] The difference between Example 8 and Example 1 is that in Example 8, 15 g of bamboo fiber, 15 g of seaweed fiber, and 70 g of photo-thermally antibacterial modified cotton fiber are used in S2.

[0086] Example 9

[0087] The difference between Example 9 and Example 1 is that in Example 9, 20 g of bamboo fiber, 20 g of seaweed fiber, and 60 g of photo-thermally antibacterial modified cotton fiber are used in S2.

[0088] Comparative Example 1

[0089] The difference between Comparative Example 1 and Example 1 is that in Comparative Example 1, the pre-treated cotton fiber used in S13 is 1 g, and the graphene oxide titanium dioxide composite @ polydopamine-ε-polylysine antibacterial agent prepared from Preparation Example 1 is 0.01 g.

[0090] Comparative Example 2

[0091] The difference between Comparative Example 2 and Example 1 is that in Comparative Example 2, 1 g of pre-treated cotton fiber is used in S13, and 0.08 g of the graphene oxide titanium dioxide composite @ polydopamine-ε-polylysine antibacterial agent prepared from Preparation Example 1 is used.

[0092] Comparative Example 3

[0093] The difference between Comparative Example 3 and Example 1 is that in Comparative Example 3, 5 g of bamboo fiber, 5 g of seaweed fiber, and 90 g of photo-thermal antibacterial modified cotton fiber are used in S2.

[0094] Comparative Example 4

[0095] The difference between Comparative Example 4 and Example 1 is that in Comparative Example 4, 30 g of bamboo fiber, 30 g of seaweed fiber, and 40 g of photo-thermal antibacterial modified cotton fiber are used in S2.

[0096] Comparative Example 5

[0097] The difference between Comparative Example 5 and Example 1 is that the cotton fiber used in Comparative Example 5 is not subjected to photo-thermal antibacterial modification.

[0098] Performance detection test

[0099] I. Referring to FZ / T 01021-1992 "Test Method for Antibacterial Property of Fabrics", the antibacterial properties of the antibacterial and acarid-proof composite fabrics obtained in Examples 1-9 and Comparative Examples 1-5 were tested, and the results are shown in Table 1.

[0100] II. According to the repellent method in GB / T 24253-2009 "Evaluation of Acarid-proof Performance of Textiles", the acarid-proof properties of the antibacterial and acarid-proof composite fabrics obtained in Examples 1-9 and Comparative Examples 1-5 were tested. The test mites were dust mites, and the results are shown in Table 1.

[0101] III. The antibacterial and acarid-proof composite fabrics obtained in Examples 1-9 and Comparative Examples 1-5 were placed in ultraviolet light and red light for 30 min respectively, and then their antibacterial and acarid-proof properties were tested by the above methods. The results are shown in Table 1.

[0102] The specific test results are as follows:

[0103] Table 1

[0104]

[0105] It can be seen from the test results in Table 1 that the mixed fabric prepared in the examples of the present application has strong antibacterial properties and acarid repellency rate. After being irradiated with red light and ultraviolet light for 30 min, the antibacterial rate and acarid repellency rate can reach 99.99%.

[0106] This specific embodiment is only an interpretation of the present application and does not limit the present application. After reading this specification, those skilled in the art can make modifications to this embodiment without creative contributions as needed, but as long as it is within the scope of the claims of the present application, it is protected by the patent law.

Claims

1. An antibacterial and mite-proof composite fabric, characterized in that: The raw materials include, by mass percentage: 10 - 20% bamboo fiber, 10 - 20% seaweed fiber, and 60 - 80% photo-thermal antibacterial modified cotton fiber; The raw materials of the photo-thermal antibacterial modified cotton fiber include, by weight parts: 1 - 2 parts of pretreated cotton fiber, 0.02 - 0.12 part of graphene oxide titanium dioxide composite @ polydopamine - ε - polylysine antibacterial agent, and 150 - 400 parts of water; The mass ratio of the pretreated cotton fiber to the graphene oxide titanium dioxide composite @ polydopamine - ε - polylysine antibacterial agent is 1:0.02 - 0.

06.

2. The antibacterial and acarid-proof composite fabric according to claim 1, wherein: The preparation method of the pretreated cotton fiber includes the following steps: S1. Prepare a solution by mixing 30% hydrogen peroxide, sodium hydroxide, sodium silicate, surfactant and water by mass fraction. Put the cotton fiber into it and carry out scouring and bleaching treatment in a water bath at 85 - 90 °C with a liquor ratio of 1:25 - 35. Then take out the treated cotton fiber, wash it with water and dry it to obtain the scoured and bleached cotton fiber; S2. Add the scoured and bleached cotton fiber to a sodium periodate solution, react with oscillation for 2 - 3 h under lightless conditions at 40 - 50 °C. After the reaction is completed, immerse it in a glycerol solution for 30 - 60 min, and then wash it several times with distilled water.

3. The antibacterial and acarid-proof composite fabric according to claim 2, characterized in that: The weight parts of 30% hydrogen peroxide, sodium hydroxide, sodium silicate, surfactant and water by mass fraction are respectively 13 - 17 parts of 30% hydrogen peroxide, 4 - 6 parts of sodium hydroxide, 2 - 4 parts of sodium silicate, 2 - 3 parts of surfactant, and 1000 parts of water.

4. The antibacterial and mite-proof composite fabric according to claim 1, wherein: The preparation method of the graphene oxide titanium dioxide composite @ polydopamine - ε - polylysine antibacterial agent includes the following steps: S1. Add the graphene oxide titanium dioxide composite to a Tris - HCl buffer solution and disperse it by ultrasonic wave. Then add dopamine and stir and react at room temperature for 3 - 5 h. After the reaction is completed, collect the precipitate by centrifugation, wash it several times with deionized water and then dry it in vacuum to obtain graphene oxide titanium dioxide composite @ polydopamine; S2. Disperse the graphene oxide titanium dioxide composite @ polydopamine in a Tris - HCl buffer solution and ultrasonically treat it for 10 - 15 min. Then add an ε - polylysine aqueous solution to the suspension and stir and react in the dark at room temperature for 12 - 15 h. After the reaction is completed, collect the precipitate by centrifugation and wash it several times with deionized water. After vacuum drying, the graphene oxide titanium dioxide composite @ polydopamine - ε - polylysine antibacterial agent is obtained.

5. The antibacterial and mite-proof composite fabric according to claim 4, wherein: The mass ratio of the graphene oxide titanium dioxide composite to dopamine is 1:3.5 - 5.

6. The antibacterial and mite-proof composite fabric according to claim 4, characterized in that: The concentration of the ε - polylysine aqueous solution is 9 - 13 mg / mL; the solid - liquid ratio of the graphene oxide titanium dioxide composite @ polydopamine to the ε - polylysine aqueous solution is 1:0.3 - 0.5 mg / mL.

7. An antibacterial and mite-proof composite fabric according to claim 4, characterized in that: The preparation method of the graphene oxide titanium dioxide composite includes the following steps: By weight, 0.01 - 0.03 parts of graphene oxide are added to 100 - 150 parts of deionized water, ultrasonicated for 60 - 80 min, then 1 - 3 parts of titanium dioxide powder and 0.01 - 0.03 parts of nonylphenol polyoxyethylene ether are added simultaneously, stirred evenly, then 19 - 30 parts of sodium hydroxide and 45 - 90 parts of deionized water are added. The mixed solution is poured into a reaction kettle and hydrothermally reacted at 150 - 170 °C for 6 - 8 h. After the reaction, the precipitate is collected by centrifugation and washed several times with deionized water, and dried to obtain a graphene oxide - titanium dioxide composite material.

8. The preparation method of an antibacterial and mite-proof composite fabric according to any one of claims 1-7, characterized in that: It includes the following steps: S1. Prepare photothermal antibacterial modified cotton fibers; S2. Weigh bamboo fibers, seaweed fibers, and photothermal antibacterial modified cotton fibers according to the ratio; The bamboo fibers and seaweed fibers are respectively pretreated to obtain pretreated bamboo fibers and pretreated seaweed fibers; S3. The pretreated bamboo fibers, pretreated seaweed fibers, and photothermal antibacterial modified cotton fibers are blended into yarn. The roving count is 2 - 3 g / 10 m, the roving twist factor is 150 - 170, the center distance of the flyer of the fine yarn is 2 - 4 mm, the twist factor of the fine yarn is 400 - 450, and the front roller speed of the fine yarn is 150 - 200 r / min to obtain a blended yarn; S4. The blended yarn is woven according to the warp density of 150 - 170 ends / 10 cm and the weft density of 100 - 110 ends / 10 cm to obtain an antibacterial and mite - proof composite fabric.

9. The preparation method of an antibacterial and mite-proof composite fabric according to claim 8, characterized in that: The method for respectively pretreating the bamboo fibers and seaweed fibers includes the following steps: The seaweed fibers and bamboo fibers are respectively soaked in a 10% by mass methacryloyloxyethyl trimethyl ammonium chloride monomer, then placed in a vacuum oven at 60 - 70 °C and dried for 1.5 - 3 h, then rinsed with deionized water and dried again in a vacuum oven to obtain methacryloyloxyethyl trimethyl ammonium chloride - filled seaweed fibers and methacryloyloxyethyl trimethyl ammonium chloride - filled bamboo fibers; then the methacryloyloxyethyl trimethyl ammonium chloride - filled seaweed fibers and methacryloyloxyethyl trimethyl ammonium chloride - filled bamboo fibers are subjected to plasma pretreatment to obtain pretreated bamboo fibers and pretreated seaweed fibers.

10. Use of an antibacterial and acarid-proof composite fabric according to any one of claims 1-7, characterized in that: The application of the antibacterial and mite - proof composite fabric in the fields of bedding, curtains, clothing, medical supplies, etc.

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