Anti-mite and sterilization fabric and preparation method thereof

Abstract

The application discloses an anti-mite and sterilization fabric and a preparation method thereof, and relates to the technical field of textile fabrics. In the preparation of the anti-mite and sterilization fabric, glycidyl methacrylate is copolymerized with acrylonitrile to prepare epoxy copolymerized acrylonitrile; nano-tin-antimony oxide is modified by a silane modification solution to prepare double-bond modified nano-tin-antimony oxide; the double-bond modified nano-tin-antimony oxide is reacted with 2-amino-4-hydroxy-1, 3, 5-triazine to prepare modified nano-tin-antimony oxide; the epoxy copolymerized acrylonitrile and the modified nano-tin-antimony oxide are mixed to prepare modified polyacrylonitrile fibers by spinning; the modified polyacrylonitrile fibers are surface modified by ethylene chlorohydroxyphosphate and lauryl dimethyl tertiary amine to prepare antibacterial modified polyacrylonitrile fibers; and the antibacterial modified polyacrylonitrile fibers are spun to weave into a fabric to prepare the anti-mite and sterilization fabric. The anti-mite and sterilization fabric prepared by the application has the advantages of antibacterial property, anti-mite property, flame retardation, antistatic property and good mechanical property.

Description

Technical Field

[0001] This invention relates to the field of textile fabric technology, specifically to an anti-mite and antibacterial fabric and its preparation method. Background Technology

[0002] With the rapid development of the textile industry, the research and development of functional fiber fabrics has become a major trend. As people's living standards continue to improve, they have higher requirements for their living environment, and textiles with antibacterial and anti-mite functions are highly sought after. Previously, antibacterial and anti-mite fabrics were only used in specific fields such as military and medical applications, but now they have entered the lives of ordinary people, resulting in greater demand and a larger market for such functional fabrics. Mites are widely present in household textiles and can trigger a series of diseases such as allergic asthma, allergic rhinitis, allergic dermatitis, eczema, hay fever, and scabies, causing significant disruption to people's lives. Therefore, it is essential for textiles to have anti-mite functions.

[0003] Human living and working environments are teeming with various microorganisms such as bacteria and fungi, including common Staphylococcus aureus, Escherichia coli, and Candida albicans. During use, household and clothing textiles accumulate human sweat, oils, and other metabolic byproducts, as well as various liquid and solid pollutants, providing ideal breeding grounds for microorganisms. The proliferation of bacteria can easily produce unpleasant odors, affecting the user's mood, and can also trigger various skin diseases and spread infectious diseases, causing cross-infection and harming people's health. Therefore, from the perspective of disease prevention and health care, it is very meaningful for textile products to have certain antibacterial and bacteriostatic functions. Summary of the Invention

[0004] The purpose of this invention is to provide an anti-mite and antibacterial fabric and its preparation method, so as to solve the problems existing in the prior art.

[0005] To solve the above-mentioned technical problems, the present invention provides the following technical solution:

[0006] A mite-proof and antibacterial fabric, wherein the mite-proof and antibacterial fabric is made by spinning antibacterial modified polyacrylonitrile fibers and then weaving them into a fabric.

[0007] The antibacterial modified polyacrylonitrile fiber is prepared by surface modification of modified polyacrylonitrile fiber with cyclochloroethylene phosphate and lauryl dimethyl tertiary amine.

[0008] The modified polyacrylonitrile fiber is obtained by spinning a mixture of epoxy copolyacrylonitrile and modified nano-tin antimony oxide.

[0009] The epoxy copolyacrylonitrile is prepared by copolymerizing glycidyl methacrylate and acrylonitrile.

[0010] The modified nano-tin-antimony oxide is prepared by reacting the double bond modified nano-tin-antimony oxide with 2-amino-4-hydroxy-1, 3, 5-triazine;

[0011] The double bond modified nano-tin-antimony oxide is prepared by modifying the nano-tin-antimony oxide with a silane modification solution.

[0012] As an optimization, the spinning includes dry spinning, wet spinning, dry-wet spinning.

[0013] A preparation method of an anti-mite and bacteria-removing fabric, comprising the following preparation steps:

[0014] (1) Under a nitrogen atmosphere, 4-5 parts of acrylonitrile, 0.75-1.05 parts of glycidyl methacrylate, and 40-50 parts of N, N-dimethylformamide are uniformly mixed, heated to 55°C, 0.024-0.03 parts of azobis diisopropyl cyanide is added, reacted at 60-65°C and 200-250 r / min for 19-20 h, poured into 100-120 parts of pure water, stirred at 300-400 r / min for 20-30 min, filtered, washed with pure water for 3-4 times, and vacuum dried at 50-60°C for 10-12 h to prepare an epoxy copolyacrylonitrile;

[0015] (2) 3-4 parts of nano-tin-antimony oxide and 25-30 parts of anhydrous ethanol are uniformly mixed and ultrasonically dispersed for 8-10 min, 15-18 parts of a silane modification solution is added and uniformly mixed, stirred at 200-300 r / min at 60°C for 8-9 h of reflux reaction, centrifuged for 10-12 min, the precipitate is washed with anhydrous ethanol for 3-4 times, and vacuum dried at 50-60°C for 8-10 h to prepare double bond modified nano-tin-antimony oxide;

[0016] (3) 2-3 parts of double bond modified nano-tin-antimony oxide, 0.5-0.6 parts of 2-amino-4-hydroxy-1, 3, 5-triazine, and 40-50 parts of methanol are uniformly mixed, reacted in a sealed environment at 30-40°C and 250-350 r / min for 6-8 h, the liquid is removed by centrifugation, washed with anhydrous ethanol for 3-4 times, and vacuum dried at 50-60°C for 10-12 h to prepare modified nano-tin-antimony oxide;

[0017] (4) 11-13 parts of epoxy copolyacrylonitrile, 0.5-0.7 parts of modified nano-tin-antimony oxide, and 77-84 parts of dimethyl sulfoxide are uniformly mixed, ultrasonically dispersed for 30-40 min, stirred at 800-1000 r / min at 60-70°C for 10-12 h, and then placed in a vacuum oven at 50-60°C for 40-48 h of static defoaming, to prepare a modified polyacrylonitrile fiber after spinning;

[0018] (5) according to the mass fraction, 2~3 parts of modified polyacrylonitrile fiber is soaked in 20~30 parts of tetrahydrofuran, 0.72~0.9 parts of triethylamine is added, and the temperature is reduced to-10~-5℃, 20~25 parts of 5wt% ethylene chlorophosphonate tetrahydrofuran solution is added dropwise at 1~1.2ml / min, after the dropwise addition is completed, stirring is carried out at-10~-5℃ and 30~50r / min for 60~70min, the liquid is removed by suction filtration, then it is immersed in 5wt% lauryl dimethyl tertiary amine tetrahydrofuran solution according to the bath ratio 1:(30~40)g / ml, and refluxed at 70℃ and 100~150r / min for 20~24h, and then it is naturally cooled to room temperature, suction filtered, washed with anhydrous ethanol for 3~4 times, and vacuum dried at 60~70℃ for 10~12h, to obtain the antibacterial modified polyacrylonitrile fiber;

[0019] (6) the antibacterial modified polyacrylonitrile fiber is spun into yarn on a ring spinning machine, and then woven into a fabric according to the specification requirements, to obtain the anti-mite and antibacterial fabric.

[0020]

[0021]

[0022] Compared with the prior art, the present application has the following beneficial effects:

[0023] In the preparation of the anti-mite and antibacterial fabric, glycidyl methacrylate is copolymerized with acrylonitrile to obtain epoxy copolymerized acrylonitrile; the nano tin antimony oxide is modified by a silane modification solution to obtain double bond modified nano tin antimony oxide; the double bond modified nano tin antimony oxide is reacted with 2-amino-4-hydroxy-1,3,5-triazine to obtain modified nano tin antimony oxide; the epoxy copolymerized acrylonitrile is mixed with the modified nano tin antimony oxide to spin and obtain modified polyacrylonitrile fiber; the modified polyacrylonitrile fiber is surface modified by ethylene chlorophosphonate and lauryl dimethyl tertiary amine to obtain antibacterial modified polyacrylonitrile fiber; the antibacterial modified polyacrylonitrile fiber is spun and woven into a fabric to obtain the anti-mite and antibacterial fabric.

[0024] Firstly, glycidyl methacrylate is copolymerized with acrylonitrile to introduce epoxy groups on the polyacrylonitrile segment and improve the reactive sites of the polyacrylonitrile segment; then, the nano tin antimony oxide is modified by γ-methacryloyloxypropyltrimethoxysilane to introduce double bond reactive groups on the surface, and the dispersion performance of the nano tin antimony oxide in the polymer is improved, the nano tin antimony oxide uniformly dispersed in the polymer matrix can effectively improve the antistatic performance, and the nano tin antimony oxide can also cooperate with the flame retardant elements to exhibit better flame retardant effect.

[0025] Secondly, the amino group on 2-amino-4-hydroxy-1, 3, 5-triazine reacts with the double bond on the surface of the modified nano antimony tin oxide by Michael addition, so as to introduce triazine groups containing a large amount of flame-retardant element nitrogen on the surface of the nano antimony tin oxide, further improve the contribution of the flame-retardant performance, and leave a hydroxyl reactive group for subsequent reaction; after mixing the epoxy copolymerized acrylonitrile with the modified nano antimony tin oxide, the modified polyacrylonitrile fiber is spun, and in the process of spinning, the epoxy group on the epoxy copolymerized acrylonitrile reacts with the hydroxyl group on the modified nano antimony tin oxide, so as to fix the modified nano antimony tin oxide in the polymer matrix in the form of a covalent bond, and improve the improvement effect of the nano antimony tin oxide on the mechanical properties.

[0026] Finally, the phosphoryl chloride group on the ethylene chlorophosphate ring reacts with the hydroxyl group on the surface of the modified polyacrylonitrile fiber first, so as to introduce the ethylene phosphate ring on the surface of the modified polyacrylonitrile fiber, and then reacts with lauryl dimethyl tertiary amine to form quaternary ammonium, so as to introduce the phosphate group and the quaternary ammonium group on the surface of the modified polyacrylonitrile fiber, and form a phosphatidylcholine-like structure, in which the phosphate group carries a negative charge, and the quaternary ammonium group carries a positive charge, and the two ionic charges make it have good hydrophilic performance and antistatic improvement effect; at the same time, the phosphatidylcholine-like structure has excellent cell compatibility, and the quaternary ammonium group also has excellent antibacterial performance and anti-mite performance under the action of the dodecane carbon chain, and the cell compatibility of the phosphatidylcholine-like structure enables the long carbon chain quaternary ammonium group to be adsorbed on bacteria or mites, so as to effectively exert the bactericidal effect and de-mite effect of the quaternary ammonium; the phosphate group also introduces a large amount of flame-retardant element phosphorus, which can form a synergistic flame-retardant effect with the nano antimony tin oxide and the flame-retardant elements silicon and nitrogen on the surface of the nano antimony tin oxide, so as to effectively improve the flame-retardant performance; the anti-mite and de-bacteria fabric woven from the antibacterial modified polyacrylonitrile fiber as raw fiber has almost all the functions of the antibacterial modified polyacrylonitrile fiber, and can be spun and woven according to actual needs. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present application will be clearly and completely described below in combination with the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0028] The following is the information of the raw materials used in all the examples and comparative examples:

[0029] Nano antimony tin oxide: particle size 20 nm, model ATO-0020, item AM-ATO-038-1, purchased from Zhejiang Yamei Nanometer Technology Co., Ltd.

[0030] All the following examples and comparative examples used silane modified solution were prepared as follows: 1.1 parts of γ-methacryloxypropyltrimethoxysilane, 0.85 parts of pure water, 9.5 parts of anhydrous ethanol were mixed uniformly, stirred at 250 r / min for 45 min at room temperature to prepare.

[0031] All the following examples and comparative examples used wet spinning process, the process parameters were as follows: pump supply was 1.5 g / min, the spinneret was 50 holes, the coagulation bath was a mixture of 30 wt% dimethyl sulfoxide and 70 wt% water, the coagulation bath temperature was 10℃, the first drawing bath was 45℃ pure water, the drawing ratio was 1.5 times, the second drawing bath was 85℃ pure water, the drawing ratio was 6 times, and then a wet winding machine was used for winding.

[0032] All the following examples and comparative examples were set as follows: the warp yarn density was 83.3 dtex, the weft yarn density was 147.6 dtex, and the warp density x weft density was 80 x 38 roots / cm. Example 1:

[0033] A preparation method of a mite-proof and bacteria-removing fabric, the preparation method of the mite-proof and bacteria-removing fabric comprises the following preparation steps:

[0034] (1) 4 parts of acrylonitrile, 0.75 parts of glycidyl methacrylate, and 40 parts of N,N-dimethylformamide were mixed uniformly under a nitrogen atmosphere, heated to 55℃, 0.024 parts of azobisisoheptanitrile was added, reacted at 60℃ and 200 r / min for 20 h, poured into 100 parts of pure water, stirred at 300 r / min for 30 min, filtered, washed with pure water for 3 times, and dried at 50℃ under vacuum for 12 h to prepare an epoxy copolyacrylonitrile.

[0035] (2) 3 parts of nano antimony tin oxide, 25 parts of anhydrous ethanol were mixed uniformly, ultrasonic dispersed for 8 min, 15 parts of the silane modified solution was added and mixed uniformly, stirred at 60℃ and 200 r / min for 9 h, centrifuged for 10 min, the precipitate was washed with anhydrous ethanol for 3 times, and dried at 50℃ under vacuum for 10 h to prepare a double bond modified nano antimony tin oxide.

[0036] (3) 2 parts of the double bond modified nano antimony tin oxide, 0.5 parts of 2-amino-4-hydroxy-1,3,5-triazine, and 40 parts of methanol were mixed uniformly, reacted at 30℃ and 250 r / min for 8 h in a sealed environment, the liquid was removed by centrifugation, washed with anhydrous ethanol for 3 times, and dried at 50℃ under vacuum for 12 h to prepare a modified nano antimony tin oxide.

[0037] (4) 11 parts of epoxy copolyacrylonitrile, 0.5 parts of modified nano antimony tin oxide, 77 parts of dimethyl sulfoxide were mixed uniformly, ultrasonic dispersion was performed for 30 min, stirring was performed at 60°C and 800 r / min for 12 h, and then static defoaming was performed in a vacuum oven at 50°C for 48 h, to obtain modified polyacrylonitrile fibers after spinning;

[0038] (5) 2 parts of modified polyacrylonitrile fibers were soaked in 20 parts of tetrahydrofuran, 0.72 parts of triethylamine was added, the temperature was reduced to -10°C, 20 parts of 5 wt% ethylene chlorophosphonate in tetrahydrofuran was added dropwise at a rate of 1 ml / min, stirring was performed at -10°C and 30 r / min for 70 min after the dropwise addition was completed, liquid was removed by suction filtration, 5 wt% lauryl dimethyl tertiary amine in tetrahydrofuran was immersed at a bath ratio of 1:30 g / ml, reflux reaction was performed at 70°C and 100 r / min for 24 h, natural cooling was performed to room temperature, suction filtration was performed, washing was performed with anhydrous ethanol for 3 times, and vacuum drying was performed at 60°C for 12 h, to obtain antibacterial modified polyacrylonitrile fibers;

[0039] (6) The antibacterial modified polyacrylonitrile fibers were spun into yarns on a ring spinning machine, and then woven into a fabric according to a specification, to obtain a mite-proof and antibacterial fabric.

[0040] Implementation: 2:

[0041] A preparation method of a mite-proof and antibacterial fabric, the preparation method of the mite-proof and antibacterial fabric comprises the following preparation steps:

[0042] (1) 4.5 parts of acrylonitrile, 0.9 parts of glycidyl methacrylate and 45 parts of N,N-dimethylformamide were mixed uniformly under a nitrogen atmosphere, the temperature was increased to 55°C, 0.027 parts of azobisisoheptanenitrile was added, reaction was performed at 60°C and 225 r / min for 19.5 h, 110 parts of pure water was poured in, stirring was performed at 350 r / min for 25 min, suction filtration was performed, washing was performed with pure water for 3 times, and vacuum drying was performed at 55°C for 11 h, to obtain epoxy copolyacrylonitrile;

[0043] (2) 3.5 parts of nano antimony tin oxide and 28 parts of anhydrous ethanol were mixed uniformly, ultrasonic dispersion was performed for 9 min, 16.5 parts of a silane modification solution was added and mixed uniformly, stirring was performed at 60°C and 250 r / min for 8.5 h, centrifugation was performed for 11 min, the precipitate was washed with anhydrous ethanol for 3 times, and vacuum drying was performed at 55°C for 9 h, to obtain double bond modified nano antimony tin oxide;

[0044] (3) 2.5 parts of double bond modified nano antimony tin oxide, 0.55 parts of 2-amino-4-hydroxy-1, 3, 5-triazine, 45 parts of methanol were mixed uniformly, reacted for 7 h at 35 °C and 300 r / min in a closed environment, centrifuged to remove the liquid, washed with anhydrous ethanol for 3 times, and dried at 55 °C for 11 h in a vacuum oven to prepare modified nano antimony tin oxide;

[0045] (4) 12 parts of epoxy copolymerized polyacrylonitrile, 0.6 parts of modified nano antimony tin oxide, 80.5 parts of dimethyl sulfoxide were mixed uniformly, ultrasonic dispersed for 35 min, stirred at 65 °C and 900 r / min for 11 h, and then placed in a vacuum oven at 55 °C for 44 h to remove bubbles, to prepare modified polyacrylonitrile fibers after spinning;

[0046] (5) 2.5 parts of modified polyacrylonitrile fibers were soaked in 25 parts of tetrahydrofuran, 0.81 parts of triethylamine was added, the temperature was lowered to -8 °C, 22.5 parts of 5 wt% ethylene chlorophosphonate vinyl ester solution in tetrahydrofuran was added dropwise at a rate of 1.1 ml / min, after the dropwise addition was completed, stirring was carried out at -8 °C and 40 r / min for 65 min, the liquid was removed by suction filtration, 5 wt% lauryl dimethyl tertiary amine solution in tetrahydrofuran was immersed at a bath ratio of 1:35 g / ml, and the reaction was carried out at 70 °C and 125 r / min for 22 h, then the temperature was naturally cooled to room temperature, suction filtration was carried out, washing was carried out with anhydrous ethanol for 3 times, and drying was carried out in a vacuum oven at 65 °C for 11 h to prepare antibacterial modified polyacrylonitrile fibers;

[0047] (6) The antibacterial modified polyacrylonitrile fibers were spun into yarns on a ring spinning machine, and then woven into fabrics according to the requirements of the specifications to prepare anti-mite and antibacterial fabrics.

[0048] Implementation: 3:

[0049] A preparation method of anti-mite and antibacterial fabrics, the preparation method of the anti-mite and antibacterial fabrics comprises the following preparation steps:

[0050] (1) 5 parts of acrylonitrile, 1.05 parts of glycidyl methacrylate, 50 parts of N,N-dimethylformamide were mixed uniformly under a nitrogen atmosphere, the temperature was raised to 55 °C, 0.03 parts of azobis diisopropyl cyanide was added, the reaction was carried out at 65 °C and 250 r / min for 19 h, then the mixture was poured into 120 parts of pure water, stirred at 400 r / min for 20 min, suction filtration was carried out, washing was carried out with pure water for 4 times, and drying was carried out in a vacuum oven at 60 °C for 10 h to prepare epoxy copolymerized polyacrylonitrile;

[0051] (2) 4 parts of nano antimony tin oxide, 30 parts of anhydrous ethanol were mixed uniformly, ultrasonic dispersion was performed for 10 min, 18 parts of silane modification solution were added and mixed uniformly, reflux reaction was performed at 60°C and 300 r / min for 8 h, centrifugation was performed for 12 min, the precipitate was washed with anhydrous ethanol for 4 times, and vacuum drying was performed at 60°C for 8 h to prepare double bond modified nano antimony tin oxide;

[0052] (3) 3 parts of double bond modified nano antimony tin oxide, 0.6 parts of 2-amino-4-hydroxy-1, 3, 5-triazine, and 50 parts of methanol were mixed uniformly, reaction was performed in a closed environment at 40°C and 350 r / min for 6 h, liquid was removed by centrifugation, washing was performed with anhydrous ethanol for 4 times, and vacuum drying was performed at 60°C for 10 h to prepare modified nano antimony tin oxide;

[0053] (4) 13 parts of epoxy copolymerized acrylonitrile, 0.7 parts of modified nano antimony tin oxide, and 84 parts of dimethyl sulfoxide were mixed uniformly, ultrasonic dispersion was performed for 40 min, stirring was performed at 70°C and 1000 r / min for 10 h, and static defoaming was performed in a vacuum oven at 60°C for 40 h to prepare modified polyacrylonitrile fibers after spinning;

[0054] (5) 3 parts of modified polyacrylonitrile fibers were soaked in 30 parts of tetrahydrofuran, 0.9 parts of triethylamine was added, the temperature was lowered to -5°C, 25 parts of 5 wt% ethylene chlorophosphonate in tetrahydrofuran solution was added dropwise at a rate of 1.2 ml / min, stirring was performed at -5°C and 50 r / min for 60 min after the dropwise addition was completed, liquid was removed by suction filtration, 5 wt% lauryl dimethyl tertiary amine in tetrahydrofuran solution was immersed at a bath ratio of 1:40 g / ml, reflux reaction was performed at 70°C and 150 r / min for 20 h, the temperature was naturally cooled to room temperature, suction filtration was performed, washing was performed with anhydrous ethanol for 4 times, and vacuum drying was performed at 70°C for 10 h to prepare antibacterial modified polyacrylonitrile fibers;

[0055] (6) The antibacterial modified polyacrylonitrile fibers were spun into yarns on a ring spinning machine, and fabrics were woven according to the specifications to prepare anti-mite and antibacterial fabrics.

[0056] Comparative Example 1:

[0057] The preparation method of the anti-mite and antibacterial fabric of Comparative Example 1 is different from that of Example 2 in that step (2) is modified, that is, 3.5 parts of nano antimony tin oxide, 28 parts of anhydrous ethanol were mixed uniformly, ultrasonic dispersion was performed for 9 min, 7.29 parts of silane modification solution was added and mixed uniformly, reflux reaction was performed at 60°C and 250 r / min for 8.5 h, centrifugation was performed for 11 min, the precipitate was washed with anhydrous ethanol for 3 times, and vacuum drying was performed at 55°C for 9 h to prepare double bond modified nano antimony tin oxide. The remaining steps are the same as those of Example 2.

[0058] Comparative Example 2:

[0059] The preparation method of the anti-mite and sterilization fabric of Comparative Example 2 is different from that of Example 2 in that step (2) is modified. In step (2), 3.5 parts of nano antimony tin oxide, 28 parts of anhydrous ethanol are uniformly mixed, ultrasonic dispersion is performed for 9 min, 10.94 parts of silane modification solution is added and uniformly mixed, reflux reaction is performed at 60°C and 250 r / min for 8.5 h, centrifugation is performed for 11 min, the precipitate is washed with anhydrous ethanol for 3 times, and vacuum drying is performed at 55°C for 9 h to obtain double bond modified nano antimony tin oxide. The remaining steps are the same as those of Example 2.

[0060] Comparative Example 3:

[0061] The preparation method of the anti-mite and sterilization fabric of Comparative Example 3 is different from that of Example 2 in that step (2) is modified. In step (2), 3.5 parts of nano antimony tin oxide, 28 parts of anhydrous ethanol are uniformly mixed, ultrasonic dispersion is performed for 9 min, 21.875 parts of silane modification solution is added and uniformly mixed, reflux reaction is performed at 60°C and 250 r / min for 8.5 h, centrifugation is performed for 11 min, the precipitate is washed with anhydrous ethanol for 3 times, and vacuum drying is performed at 55°C for 9 h to obtain double bond modified nano antimony tin oxide. The remaining steps are the same as those of Example 2.

[0062] Comparative Example 4:

[0063] The preparation method of the anti-mite and sterilization fabric of Comparative Example 4 is different from that of Example 2 in that step (2) is modified. In step (2), 3.5 parts of nano antimony tin oxide, 28 parts of anhydrous ethanol are uniformly mixed, ultrasonic dispersion is performed for 9 min, 25.52 parts of silane modification solution is added and uniformly mixed, reflux reaction is performed at 60°C and 250 r / min for 8.5 h, centrifugation is performed for 11 min, the precipitate is washed with anhydrous ethanol for 3 times, and vacuum drying is performed at 55°C for 9 h to obtain double bond modified nano antimony tin oxide. The remaining steps are the same as those of Example 2.

[0064] Comparative Example 5:

[0065] The preparation method of the anti-mite and sterilization fabric of Comparative Example 5 is different from that of Example 2 in that step (2) is modified. In step (2), 3.5 parts of nano antimony tin oxide, 28 parts of anhydrous ethanol are uniformly mixed, ultrasonic dispersion is performed for 9 min, 16.5 parts of silane modification solution is added and uniformly mixed, reflux reaction is performed at 40°C and 250 r / min for 8.5 h, centrifugation is performed for 11 min, the precipitate is washed with anhydrous ethanol for 3 times, and vacuum drying is performed at 55°C for 9 h to obtain double bond modified nano antimony tin oxide. The remaining steps are the same as those of Example 2.

[0066] Comparative Example 6:

[0067] The preparation method of the anti-mite and sterilization fabric of Comparative Example 6 is different from that of Example 2 in that step (2) is modified. In step (2), 3.5 parts of nano antimony tin oxide, 28 parts of anhydrous ethanol are uniformly mixed, ultrasonic dispersion is performed for 9 min, 16.5 parts of a silane modification solution is added and uniformly mixed, reflux reaction is performed at 50°C and 250 r / min for 8.5 h, centrifugation is performed for 11 min, the precipitate is washed with anhydrous ethanol for 3 times, and vacuum drying is performed at 55°C for 9 h to obtain double bond modified nano antimony tin oxide. The remaining steps are the same as those of Example 2.

[0068] Comparative Example 7:

[0069] The preparation method of the anti-mite and sterilization fabric of Comparative Example 7 is different from that of Example 2 in that step (2) is modified. In step (2), 3.5 parts of nano antimony tin oxide, 28 parts of anhydrous ethanol are uniformly mixed, ultrasonic dispersion is performed for 9 min, 16.5 parts of a silane modification solution is added and uniformly mixed, reflux reaction is performed at 70°C and 250 r / min for 8.5 h, centrifugation is performed for 11 min, the precipitate is washed with anhydrous ethanol for 3 times, and vacuum drying is performed at 55°C for 9 h to obtain double bond modified nano antimony tin oxide. The remaining steps are the same as those of Example 2.

[0070] Comparative Example 8:

[0071] The preparation method of the anti-mite and sterilization fabric of Comparative Example 8 is different from that of Example 2 in that step (2) is modified. In step (2), 3.5 parts of nano antimony tin oxide, 28 parts of anhydrous ethanol are uniformly mixed, ultrasonic dispersion is performed for 9 min, 16.5 parts of a silane modification solution is added and uniformly mixed, reflux reaction is performed at 80°C and 250 r / min for 8.5 h, centrifugation is performed for 11 min, the precipitate is washed with anhydrous ethanol for 3 times, and vacuum drying is performed at 55°C for 9 h to obtain double bond modified nano antimony tin oxide. The remaining steps are the same as those of Example 2.

[0072] Comparative Example 9:

[0073] The preparation method of the anti-mite and sterilization fabric of Comparative Example 9 is different from that of Example 2 in that step (2) is modified. In step (2), 3.5 parts of nano antimony tin oxide, 28 parts of anhydrous ethanol are uniformly mixed, ultrasonic dispersion is performed for 9 min, 16.5 parts of a silane modification solution is added and uniformly mixed, reflux reaction is performed at 60°C and 250 r / min for 4 h, centrifugation is performed for 11 min, the precipitate is washed with anhydrous ethanol for 3 times, and vacuum drying is performed at 55°C for 9 h to obtain double bond modified nano antimony tin oxide. The remaining steps are the same as those of Example 2.

[0074] Comparative Example 10:

[0075] The preparation method of the anti-mite and sterilization fabric of Comparative Example 10 is different from that of Example 2 in that step (2) is modified as follows: 3.5 parts of nano antimony tin oxide, 28 parts of anhydrous ethanol are uniformly mixed, ultrasonic dispersion is performed for 9 min, 16.5 parts of a silane modified solution are added and uniformly mixed, reflux reaction is performed at 60°C and 250 r / min for 6 h, centrifugation is performed for 11 min, the precipitate is washed with anhydrous ethanol for 3 times, and vacuum drying is performed at 55°C for 9 h to obtain double bond modified nano antimony tin oxide. The remaining steps are the same as those of Example 2.

[0076] Comparative Example 11:

[0077] The preparation method of the anti-mite and sterilization fabric of Comparative Example 11 is different from that of Example 2 in that step (2) is modified as follows: 3.5 parts of nano antimony tin oxide, 28 parts of anhydrous ethanol are uniformly mixed, ultrasonic dispersion is performed for 9 min, 16.5 parts of a silane modified solution are added and uniformly mixed, reflux reaction is performed at 60°C and 250 r / min for 11 h, centrifugation is performed for 11 min, the precipitate is washed with anhydrous ethanol for 3 times, and vacuum drying is performed at 55°C for 9 h to obtain double bond modified nano antimony tin oxide. The remaining steps are the same as those of Example 2.

[0078] Comparative Example 12:

[0079] The preparation method of the anti-mite and sterilization fabric of Comparative Example 12 is different from that of Example 2 in that step (2) is modified as follows: 3.5 parts of nano antimony tin oxide, 28 parts of anhydrous ethanol are uniformly mixed, ultrasonic dispersion is performed for 9 min, 16.5 parts of a silane modified solution are added and uniformly mixed, reflux reaction is performed at 60°C and 250 r / min for 13 h, centrifugation is performed for 11 min, the precipitate is washed with anhydrous ethanol for 3 times, and vacuum drying is performed at 55°C for 9 h to obtain double bond modified nano antimony tin oxide. The remaining steps are the same as those of Example 2.

[0080] Comparative Example 13:

[0081] The preparation method of the anti-mite and sterilization fabric of Comparative Example 13 is different from that of Example 2 in that step (1) is modified, that is, 4.5 parts by mass of acrylonitrile and 45 parts by mass of N,N-dimethylformamide are uniformly mixed under a nitrogen atmosphere, heated to 55°C, 0.027 parts by mass of azobisdimethyl isobutyronitrile is added, and reacted at 60°C and 225 r / min for 19.5 h, poured into 110 parts by mass of pure water, stirred at 350 r / min for 25 min, filtered, washed with pure water for 3 times, and dried at 55°C under vacuum for 11 h to prepare polyacrylonitrile; step (4) is modified, that is, 12 parts by mass of polyacrylonitrile, 0.6 parts by mass of modified nano antimony tin oxide, and 80.5 parts by mass of dimethyl sulfoxide are uniformly mixed, ultrasonically dispersed for 35 min, stirred at 65°C and 900 r / min for 11 h, and then placed in a vacuum oven at 55°C for 44 h to remove bubbles, to prepare modified polyacrylonitrile fibers after spinning. The remaining steps are the same as those of Example 2.

[0082] Comparative Example 14:

[0083] The preparation method of the anti-mite and sterilization fabric of Comparative Example 14 is different from that of Example 2 in that step (2) is not performed, and step (3) is modified, that is, 2.5 parts by mass of nano antimony tin oxide, 0.55 parts by mass of 2-amino-4-hydroxy-1,3,5-triazine, and 45 parts by mass of methanol are uniformly mixed in a sealed environment, reacted at 35°C and 300 r / min for 7 h, centrifuged to remove the liquid, washed with anhydrous ethanol for 3 times, and dried at 55°C under vacuum for 11 h to prepare modified nano antimony tin oxide. The remaining steps are the same as those of Example 2.

[0084] Comparative Example 15:

[0085] The preparation method of the anti-mite and sterilization fabric of Comparative Example 15 is different from that of Example 2 in that step (3) is not performed, and step (4) is modified, that is, 12 parts by mass of epoxy copolyacrylonitrile, 0.6 parts by mass of double bond modified nano antimony tin oxide, and 80.5 parts by mass of dimethyl sulfoxide are uniformly mixed, ultrasonically dispersed for 35 min, stirred at 65°C and 900 r / min for 11 h, and then placed in a vacuum oven at 55°C for 44 h to remove bubbles, to prepare modified polyacrylonitrile fibers after spinning. The remaining steps are the same as those of Example 2.

[0086] Comparative Example 16:

[0087] The preparation method of the anti-mite and sterilization fabric of Comparative Example 16 is different from that of Example 2 in that steps (2) and (3) are not performed, and step (4) is modified, that is, 12 parts by mass of epoxy copolyacrylonitrile and 80.5 parts by mass of dimethyl sulfoxide are uniformly mixed, ultrasonically dispersed for 35 min, stirred at 65°C and 900 r / min for 11 h, and then placed in a vacuum oven at 55°C for 44 h to remove bubbles, to prepare modified polyacrylonitrile fibers after spinning. The remaining steps are the same as those of Example 2.

[0088] Comparative Example 17:

[0089] The preparation method of the anti-mite and sterilization fabric of Comparative Example 17 is different from that of Example 2 in that step (5) is modified as follows: 2.5 parts of modified polyacrylonitrile fiber is immersed in a 5wt% lauryl dimethyl tertiary amine solution in tetrahydrofuran at a bath ratio of 1:35 g / ml, refluxed at 70°C and 125 r / min for 22 h, naturally cooled to room temperature, suction filtered, washed with anhydrous ethanol for 3 times, and vacuum dried at 65°C for 11 h to obtain the antibacterial modified polyacrylonitrile fiber. The remaining steps are the same as those of Example 2.

[0090] Comparative Example 18:

[0091] The preparation method of the anti-mite and sterilization fabric of Comparative Example 18 is different from that of Example 2 in that step (5) is modified as follows: 2.5 parts of modified polyacrylonitrile fiber is immersed in 25 parts of tetrahydrofuran, 0.81 parts of triethylamine is added, the temperature is lowered to -8°C, 22.5 parts of a 5wt% ethylene vinyl chloride cyclophosphoric acid solution in tetrahydrofuran is added dropwise at a rate of 1.1 ml / min, after the dropwise addition is completed, stirring is performed at -8°C and 40 r / min for 65 min, the liquid is removed by suction filtration, washed with pure water for 3 times, and vacuum dried at 65°C for 11 h to obtain the antibacterial modified polyacrylonitrile fiber. The remaining steps are the same as those of Example 2.

[0092] Comparative Example 19:

[0093] The preparation method of the anti-mite and sterilization fabric of Comparative Example 19 is different from that of Example 2 in that step (5) is not performed, and step (6) is modified as follows: the modified polyacrylonitrile fiber is spun into a yarn on a ring spinning machine and then woven into a fabric according to the required specifications to obtain the anti-mite and sterilization fabric. The remaining steps are the same as those of Example 2.

[0094] Test Example 1:

[0095] Optimal condition confirmation: the optimal reaction conditions for preparing the double bond modified nano tin oxide antimony are confirmed by adjusting the amount of silane coupling agent added, the reaction temperature and the reaction time in step (2), and the dispersion stability is evaluated. In the modification of nano tin oxide antimony, the content of surface modification is different due to different reaction conditions, and the stability in the dispersion liquid is also different. Therefore, the double bond modified nano tin oxide antimony prepared in the examples and comparative examples is dispersed in anhydrous ethanol at 4wt%, first stirred at 150 r / min for 24 h in a constant temperature water bath at 40°C, then ultrasonically treated in an ice water bath for 8 min, and then centrifuged at 3000 rpm for 5 min. The supernatant is tested for light transmittance at 530 nm. The higher the light transmittance, the worse the dispersion stability and the modification effect.

[0096]

[0097] From the comparison of the experimental data of Example 2 and Comparative Examples 1-12 in Table 1, it can be found that in the reaction process of modifying the nano-tin oxide antimony in step (2), the mass ratio of silane coupling agent / nano-tin oxide antimony is between 0.43-0.48, the reaction temperature is 60°C, and the reaction time is 8-9h, which are the best conditions, and the modification effect is better.

[0098] Through the comparison of the data in the table, the data of Comparative Examples 1-2 shows that when the amount of silane coupling agent is reduced, the modification effect is poor, because the amount of silane coupling agent is too small to completely wrap the surface of the modified nano-tin oxide antimony, resulting in a lower modification effect; the data of Comparative Examples 3-4 shows that when too much silane coupling agent is added, the modification effect will also decrease, because there is too much silane coupling agent remaining after the surface modification of nano-tin oxide antimony is completed, and the siloxane on the silane coupling agent undergoes excessive crosslinking reaction, resulting in the crosslinking and agglomeration of nano-tin oxide antimony particles to form large clusters, thereby reducing the dispersion stability and the modification effect; the data of Comparative Examples 5-6 shows that when the reaction temperature is low, the surface modification reaction rate of silane coupling agent is slow, and the surface modification cannot be completed within the specified reaction time; the data of Comparative Examples 7-8 shows that when the reaction temperature is too high, the surface modification reaction is accelerated too much, and at the same time, the double bond on the silane coupling agent is activated at the high temperature, resulting in the premature consumption of the double bond, and thus the crosslinking and agglomeration of nano-tin oxide antimony particles to form clusters, thereby reducing the dispersion stability and the modification effect; the data of Comparative Examples 9-10 shows that when the reaction time is short, the silane coupling agent cannot complete the modification, resulting in a poor modification effect; the data of Comparative Examples 11-12 shows that too long reaction time will also result in a decrease in the modification effect, because the silane coupling agent contains active double bonds, and the crosslinking and agglomeration reaction between the activated double bond functional groups will occur when the reaction time is too long, resulting in the crosslinking and agglomeration of nano-tin oxide antimony to form clusters, thereby reducing the modification effect.

[0099] Test Example 2:

[0100] Mechanical property test: The breaking strength of the prepared anti-mite and bacteria-removing fabric was tested according to GB / T 3923.1-2013 to evaluate the mechanical property thereof, the sample size was 25cm×5cm, the gauge distance was (200±1)mm, the tensile rate was 100mm / min, each group was tested in parallel for 15 times, and the average value was recorded.

[0101] Flame retardant performance test: The limiting oxygen index of the prepared anti-mite and bacteria-removing fabric was tested according to GB / T 5454-1997, the sample size was 158mm×58mm, each group was tested for 15 samples, and the average value was recorded.

[0102] Antistatic property test: the surface resistivity of the prepared anti-mite and bacteria-removing fabric was tested according to GB / T 12703.4-2010 to evaluate the antistatic property thereof, and each group was tested in parallel for 5 times, and the average value was recorded.

[0103]

[0104] From the comparison of the experimental data of examples 1~3 and comparative examples 13~19 in table 2, it can be found that the anti-mite and bacteria-removing fabric prepared by the present application has good mechanical property, flame-retardant property and antistatic property.

[0105] The data of Comparative Example 13 shows that the introduction of epoxy groups on the polyacrylonitrile segment increases the reactive sites, and the modified nano-sb2o3-tin oxide can be fixed in the polymer matrix through covalent bond reaction, thereby improving the breaking strength. The surface modification of vinyl chlorophosphonate and lauryl dimethyl tertiary amine is based on more hydroxyl reactive functional groups and has better modification effect. When the epoxy groups on the polyacrylonitrile segment are lost, the surface modification can only be carried out on the hydroxyl sites on the modified nano-sb2o3-tin oxide exposed on the surface, thereby leading to a decrease in the surface modification effect, and the flame retardation and antistatic performance are both decreased. The data of Comparative Examples 14-15 shows that the silane coupling agent and 2-amino-4-hydroxy-1, 3, 5-triazine are successfully introduced on the surface of nano-sb2o3-tin oxide, and 2-amino-4-hydroxy-1, 3, 5-triazine reacts with the double bond on the silane coupling agent through the amino group and reacts with the epoxy group and vinyl chlorophosphonate through the hydroxyl group, thereby providing higher modification effect. A large number of flame-retardant elements nitrogen and phosphorus on 2-amino-4-hydroxy-1, 3, 5-triazine form a synergistic flame-retardant effect to improve the flame-retardant effect. The data of Comparative Example 16 shows that the addition of modified nano-sb2o3-tin oxide effectively improves the mechanical properties of the anti-mite and bacteria-removing fabric through the nano-modification effect and covalent bond connection. The hydroxyl groups on the modified nano-sb2o3-tin oxide react with the epoxy groups on the copolymer chain to release more reactive groups, thereby increasing the abundance of surface hydroxyl reactive groups, so that more vinyl chlorophosphonate and lauryl dimethyl tertiary amine can be surface-modified, providing higher flame-retardant and antistatic performance. Meanwhile, the modified nano-sb2o3-tin oxide itself also has good conductive performance, which can form a synergistic effect with the phosphate groups and quaternary ammonium groups on the surface to obtain better antistatic effect. The data of Comparative Example 17 shows that the vinyl chlorophosphonate is successfully modified to the surface of the modified polyacrylonitrile fiber and obtains active groups that react with the subsequent lauryl dimethyl tertiary amine. The introduction of flame-retardant elements improves the flame-retardant performance while significantly improving the antistatic performance. The data of Comparative Example 18 shows that the lauryl dimethyl tertiary amine successfully undergoes quaternary ammonium reaction with the vinyl chlorophosphonate, thereby introducing phosphate groups and quaternary ammonium groups, which effectively improve the antistatic performance. The data of Comparative Example 19 shows that the surface modification of vinyl chlorophosphonate and lauryl dimethyl tertiary amine introduces flame-retardant elements phosphorus to improve the flame-retardant performance, and introduces phosphate groups containing negative charges and quaternary ammonium groups containing positive charges, thereby improving the antistatic performance.

[0106] Test Example 3:

[0107] Antibacterial performance test: according to GB / T 20944.3-2008, the prepared anti-mite and sterilization fabric was cut into 0.75±0.05g sample, mixed with bacteria solution and oscillated for 5min, then the oscillated bacteria solution was taken to agar medium for culture, the inhibition rate of the anti-mite and sterilization fabric on E. coli and S. aureus was determined by the number of growing bacteria, each group of samples was tested 5 times, and the average value was recorded.

[0108] Mite removal performance test: according to the inhibition method in GB / T 24253-2009, the inhibition rate of the prepared anti-mite and sterilization fabric on mites was tested, each group was tested 5 times in parallel, and the average value was recorded.

[0109]

[0110] From the experimental data comparison of examples 1-3 and comparative examples 13-19 in table 3, it can be found that the prepared anti-mite and sterilization fabric has good antibacterial and mite removal performance.

[0111] Through the data comparison in the table, the data of comparative example 13 shows that the introduction of epoxy group on the epoxy copolyacrylonitrile provides more reaction groups, so that more phosphoric acid groups and quaternary ammonium groups can be introduced during surface modification, and more phosphocholine-like structures can be introduced, which effectively improves the antibacterial and mite removal performance; the data of comparative examples 14-16 shows that the ring chlorophosphonate is used as the grafting reaction site of the remaining hydroxyl group after the reaction of the epoxy group on the epoxy copolyacrylonitrile and the hydroxyl group on the modified nano tin oxide antimony, when the modified nano tin oxide antimony is not modified with double bond and grafted with 2-amino-4-hydroxy-1,3,5-triazine, the ring chlorophosphonate can only graft with part of the hydroxyl group left by the self-opening of the epoxy group, resulting in a decrease in grafting rate, thereby reducing the antibacterial and mite removal performance; the data of comparative examples 17-19 shows that the ring chlorophosphonate reacts with lauryl dimethyl tertiary amine to be quaternized, so that the introduced phosphoric acid groups, quaternary ammonium groups and phosphocholine-like structures have good antibacterial and mite removal performance.

[0112] The above specific embodiments further illustrate the purpose, technical solutions and advantages of the present application, and it should be understood that the above description is only a specific embodiment of the present application and is not used to limit the protection scope of the present application, any modification, equivalent replacement, improvement, etc. within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A mite-proof and antibacterial fabric, characterized in that, The anti-mite and antibacterial fabric is made by spinning antibacterial modified polyacrylonitrile fibers and then weaving them into a fabric. The antibacterial modified polyacrylonitrile fiber is prepared by surface modification of modified polyacrylonitrile fiber with cyclochloroethylene phosphate and lauryl dimethyl tertiary amine. The modified polyacrylonitrile fiber is obtained by spinning a mixture of epoxy copolyacrylonitrile and modified nano-tin antimony oxide. The epoxy copolyacrylonitrile is prepared by copolymerizing glycidyl methacrylate and acrylonitrile. The modified nano-tin antimony oxide is prepared by reacting double-bond modified nano-tin antimony oxide with 2-amino-4-hydroxy-1,3,5-triazine. The double-bond modified nano-tin antimony oxide is prepared by modifying nano-tin antimony oxide with a silane-modified solution.

2. The anti-mite and antibacterial fabric according to claim 1, characterized in that, The spinning process includes dry spinning, wet spinning, and dry-wet spinning.

3. A method for preparing an anti-mite and antibacterial fabric, characterized in that, The preparation steps include the following: (1) Under a nitrogen atmosphere, acrylonitrile, glycidyl methacrylate and N,N-dimethylformamide were mixed, and azobisisoheptanenitrile was added at a heated temperature. The mixture was heated and stirred to react, then poured into pure water and stirred. The mixture was filtered, washed and dried to obtain epoxy copolymer polyacrylonitrile. (2) Mix nano-tin antimony oxide and anhydrous ethanol, disperse by ultrasonication, add silane modified solution and mix, heat and stir under reflux reaction, centrifuge, wash and dry to obtain double bond modified nano-tin antimony oxide; (3) Mix double bond modified nano-tin antimony oxide, 2-amino-4-hydroxy-1,3,5-triazine and methanol evenly, heat and stir in a closed environment, centrifuge, wash and dry to obtain modified nano-tin antimony oxide. (4) Epoxy copolyacrylonitrile, modified nano-tin antimony oxide and dimethyl sulfoxide are mixed, ultrasonically dispersed, heated and stirred, vacuum settled to remove bubbles, and spun to obtain modified polyacrylonitrile fiber. (5) The modified polyacrylonitrile fiber was immersed in tetrahydrofuran, triethylamine was added, the temperature was lowered, and a tetrahydrofuran solution of cyclochloroethylene phosphate was added dropwise. After the addition was completed, the mixture was stirred at low temperature, filtered, and then immersed in a tetrahydrofuran solution of lauryl dimethyl tertiary amine. The mixture was heated, stirred, and refluxed. The mixture was cooled, filtered, washed, and dried to obtain antibacterial modified polyacrylonitrile fiber. (6) After the antibacterial modified polyacrylonitrile fiber is spun into yarn on a ring spinning machine, it is woven into fabric according to the specifications to obtain anti-mite and antibacterial fabric.

4. The method for preparing an anti-mite and antibacterial fabric according to claim 3, characterized in that, The epoxy copolyacrylonitrile in step (1) is prepared by mixing 4-5 parts acrylonitrile, 0.75-1.05 parts glycidyl methacrylate, and 40-50 parts N,N-dimethylformamide by mass under a nitrogen atmosphere, heating to 55°C, adding 0.024-0.03 parts azobisisoheptanenitrile, stirring and reacting at 60-65°C for 19-20 hours, pouring into 100-120 parts pure water, stirring for 20-30 minutes, filtering, soaking and washing with pure water, and vacuum drying at 50-60°C for 10-12 hours.

5. The method for preparing an anti-mite and antibacterial fabric according to claim 3, characterized in that, The double bond modified nano-tin antimony oxide described in step (2) is prepared by mixing 3-4 parts of nano-tin antimony oxide and 25-30 parts of anhydrous ethanol by mass, dispersing by ultrasonication, adding 15-18 parts of silane modification solution and mixing evenly, stirring and refluxing at 60°C for 8-9 hours, centrifuging for 10-12 minutes, washing the precipitate with anhydrous ethanol by centrifugation, and vacuum drying at 50-60°C for 8-10 hours.

6. The method for preparing an anti-mite and antibacterial fabric according to claim 3, characterized in that, The silane-modified solution in step (2) is prepared by mixing 1-1.2 parts of γ-methacryloyloxypropyltrimethoxysilane, 0.8-0.9 parts of pure water, and 9-10 parts of anhydrous ethanol evenly by mass, and stirring at 200-300 r / min for 40-50 min at room temperature.

7. The method for preparing an anti-mite and antibacterial fabric according to claim 3, characterized in that, The modified nano-tin antimony oxide described in step (3) is prepared by mixing 2-3 parts of double bond modified nano-tin antimony oxide, 0.5-0.6 parts of 2-amino-4-hydroxy-1,3,5-triazine, and 40-50 parts of methanol by mass, stirring and reacting at 30-40°C for 6-8 hours in a closed environment, removing the liquid by centrifugation, washing with anhydrous ethanol by centrifugation, and drying under vacuum at 50-60°C for 10-12 hours.

8. The method for preparing an anti-mite and antibacterial fabric according to claim 3, characterized in that, The modified polyacrylonitrile fiber in step (4) is prepared by mixing 11-13 parts of epoxy copolyacrylonitrile, 0.5-0.7 parts of modified nano-tin antimony oxide, and 77-84 parts of dimethyl sulfoxide by mass, dispersing by ultrasonication, stirring at 60-70℃ and 800-1000r / min for 10-12h, and then allowing it to stand in a vacuum oven at 50-60℃ to remove bubbles, and then spinning it.

9. The method for preparing an anti-mite and antibacterial fabric according to claim 3, characterized in that, The spinning in step (4) is carried out using wet spinning with the following process parameters: pump feed rate of 1.5 g / min, spinneret with 50 holes, coagulation bath of 30 wt% dimethyl sulfoxide and 70 wt% water, coagulation bath temperature of 10 ℃, first drawing bath of 40~50 ℃ pure water with a drawing ratio of 1.5 times, second drawing bath of 80~90 ℃ pure water with a drawing ratio of 6 times, and then the spinning is carried out using a wet winding machine.

10. The method for preparing an anti-mite and antibacterial fabric according to claim 3, characterized in that, The antibacterial modified polyacrylonitrile fiber described in step (5) is prepared by immersing 2-3 parts of modified polyacrylonitrile fiber in 20-30 parts of tetrahydrofuran, adding 0.72-0.9 parts of triethylamine, cooling to -10 to -5℃, and adding 20-25 parts of 5wt% tetrahydrofuran solution of cyclochloroethylene phosphate at 1-1.2 ml / min. After the addition is completed, the mixture is stirred at -10 to -5℃ for 60-70 min, filtered to remove the liquid, and then immersed in 5wt% tetrahydrofuran solution of lauryl dimethyl tertiary amine at a bath ratio of 1:(30-40) g / ml. The mixture is stirred and refluxed at 70℃ for 20-24 h, naturally cooled to room temperature, filtered, washed with anhydrous ethanol, and vacuum dried at 60-70℃ for 10-12 h.

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