Antibacterial wear-resistant polyamide fiber and preparation method thereof

Abstract

The invention relates to the technical field of antibacterial and wear-resistant fiber preparation, in particular to an antibacterial and wear-resistant polyamide fiber and a preparation method thereof.The preparation method of the antibacterial and wear-resistant polyamide fiber comprises the steps that 1, polyamide chips, ABS resin and graphene-loaded antibacterial filler are mixed and added into a screw extruder, melt spinning is conducted, and fiber is prepared through stretching and winding; and step 2, immersing the fiber prepared in the step 1 into a fiber finishing liquid, soaking, and drying to obtain the antibacterial wear-resistant polyamide fiber. The prepared antibacterial wear-resistant polyamide fiber not only shows an excellent antibacterial effect when being used for the first time, but also is still excellent in antibacterial property and durable in antibacterial property after being washed with water for multiple times. In addition, the fiber is excellent in mechanical property, wear resistance, wrinkle resistance, antifouling property and the like, and can meet the requirements of high-end textiles and functional garments.

Description

Technical Field

[0001] The present application relates to the technical field of preparation of antibacterial and wear-resistant fibers, and more specifically, to an antibacterial and wear-resistant nylon fiber and a preparation method thereof. Background Art

[0002] In the field of textile materials, nylon fiber is widely used in clothing, home textiles, industry and other fields due to its excellent wear resistance, high strength and good elastic recovery, and has become one of the indispensable important fiber materials in the modern textile industry. However, with the improvement of people's living standards and the enhancement of health awareness, the performance requirements for nylon fiber are getting higher and higher. Traditional nylon fiber is prone to breed various bacteria during daily use, which not only produces unpleasant odors and affects the comfort of wearing, but also may cause health problems such as skin allergies and infections. Especially in some application scenarios that are in close contact with the human body, such as sportswear, underwear, bedding, etc., the negative impact of bacterial growth is particularly prominent. In addition, although nylon fiber itself has a certain wear resistance, its wear resistance still cannot meet the growing industrial and civilian needs in some special environments or long-term use conditions. For example, in outdoor sports equipment, industrial protective fabrics and daily necessities with frequent friction, the wear of nylon fiber will lead to a decrease in its mechanical properties and a deterioration in appearance, thereby shortening the service life of the product, increasing the cost of use and wasting resources.

[0003] At present, the common method for improving the antibacterial properties of nylon fibers includes the use of antibacterial agents for post-finishing treatment, such as attaching antibacterial agents such as silver ions and quaternary ammonium salts to the fiber surface by impregnation, coating, etc. However, this post-finishing method has the problem that the antibacterial agent is easy to fall off and has poor durability, and may affect the original feel and other properties of the fiber. In terms of improving wear resistance, most of them are achieved by changing the processing parameters of the fiber or adding some inorganic wear-resistant fillers, but other important properties of the fiber such as flexibility and spinnability are often sacrificed, or the comprehensive performance of the fiber is unstable due to the poor compatibility of the filler with the fiber matrix. Therefore, the development of a new nylon fiber that has both high-efficiency and lasting antibacterial properties and significantly improved wear resistance has become a key technical problem that needs to be solved in the current field of textile materials. Summary of the invention

[0004] In order to solve the technical problems mentioned in the background technology, the present application provides an antibacterial and wear-resistant nylon fiber and a preparation method thereof.

[0005] A method for preparing antibacterial and wear-resistant nylon fiber adopts the following technical scheme: Step 1, nylon chips, ABS resin and graphene-loaded antibacterial filler are mixed and added into a screw extruder, melt-spun at a temperature of 300-320° C. and a pressure of 12-16 MPa, and then stretched and wound to obtain fibers; Step 2: immerse the fiber obtained in step 1 in a fiber finishing solution at 40-50° C. for 6-8 hours, add glutaraldehyde, stir and react for 1-2 hours, and dry to obtain antibacterial and wear-resistant nylon fiber.

[0006] Preferably, in step 1, the mass ratio of nylon chips, ABS resin and graphene-loaded antibacterial filler is 60-70:22-25:3-5.

[0007] Preferably, the stretching process is double-roller stretching, the rotation speed of roller 1 is 150-200 rpm, and the rotation speed of roller 2 is 225-250 rpm.

[0008] Preferably, the winding process is: the reciprocating speed is 50-70 mm / min, and the winding speed is 300-350 rpm.

[0009] Preferably, in step 2, the mass ratio of the fiber to the fiber finishing liquid is 1-3:10-11.

[0010] Preferably, the preparation of the graphene-loaded antibacterial filler comprises the following steps: (1) Dispersing graphene oxide and tetrabutyl titanate in deionized water, adding NaOH, adjusting the pH to 12-14, and ultrasonically treating for 1-2 hours to form a uniform mixed solution; (2) After the mixed solution and the monomer solution are mixed, ultrasonic dispersion is performed for 30-40 minutes, azobisisobutyronitrile is added, and the mixture is stirred at room temperature for 12-20 hours. The mixture is heated to 50-60° C., ascorbic acid is added, and the mixture is stirred for 4-8 hours. The mixture is filtered, centrifuged, washed, and dried to obtain a graphene-loaded antibacterial filler.

[0011] Preferably, in step (1), the mass ratio of graphene oxide to tetrabutyl titanate is 10:1-3.

[0012] Preferably, the monomer solution in step (2) is composed of styrene, acrylamide and toluene in a mass ratio of 3-5:0.5-1:10-12.

[0013] Preferably, the mass ratio of the mixed solution to the monomer solution is 12-16:2-5.

[0014] Preferably, the preparation method of the fiber finishing liquid is: weigh 3-5 parts of modified acrylic resin, 1-1.4 parts of emulsifier, 0.2-0.5 parts of penetrant, 0.5-1 parts of antistatic agent and 40-50 parts of deionized water; add the modified acrylic resin, emulsifier, penetrant and antistatic agent to the deionized water, stir for 1-2 hours at a stirring rate of 400-600 rpm and a temperature of 60-80°C to obtain the fiber finishing liquid.

[0015] Preferably, the emulsifier is one of sodium lauryl sulfate, AEO-9 and NP-10.

[0016] Preferably, the penetrant is one of Aerosol OT, fatty alcohol polyoxyethylene ether, and fatty alcohol polyoxyethylene ether sodium sulfate.

[0017] Preferably, the antistatic agent is antistatic agent SN and / or triethanolamine stearate.

[0018] Preferably, the preparation method of the modified acrylic resin is: S1. Mix hydroxyethyl methacrylate, methacrylic acid, hexafluorobutyl methacrylate and toluene, stir and heat to 80-90°C, add initiator, heat to 100-120°C, react for 6-8h to obtain intermediate a; S2. Add N-vinyl pyrrolidone and N-(β-aminoethyl)-γ-aminopropyltrimethoxysilane to the intermediate a, add triethylamine at a temperature of 80-100°C, react for 4-8 hours, cool to room temperature, distill under reduced pressure, and dry to obtain a modified acrylic resin.

[0019] Preferably, in step S1, the mass ratio of hydroxyethyl methacrylate, methacrylic acid and hexafluorobutyl methacrylate is 4-6:10-12:1-3.

[0020] Preferably, in step S2, the mass ratio of intermediate a, N-vinyl pyrrolidone and N-(β-aminoethyl)-γ-aminopropyltrimethoxysilane is 100:1-5:8-10:0.2-0.5.

[0021] An antibacterial and wear-resistant nylon fiber is prepared by the method.

[0022] In summary, this application has the following beneficial effects: In the process of preparing antibacterial and wear-resistant nylon fiber, the present application mixes nylon slices, ABS resin and graphene-loaded antibacterial filler, and improves the overall mechanical properties of the fiber through melt spinning. When subjected to tensile or bending forces, the ABS resin can disperse the stress through its toughness and reduce local stress concentration, thereby improving the tensile and bending resistance of the fiber. In addition, graphene is used as a carrier of the antibacterial component. During the mixing and spinning process, the graphene-loaded antibacterial filler can be evenly dispersed in the matrix of nylon and ABS resin, which can not only improve the wear resistance of the fiber but also serve as a long-lasting antibacterial carrier, thereby avoiding the problem of easy shedding and poor durability of the antibacterial agent during daily washing, thereby improving the wear resistance and antibacterial durability of the nylon fiber as a whole.

[0023] In the preparation process of graphene-loaded antibacterial filler, the present application first ultrasonically mixes graphene oxide and tetrabutyl titanate, and then uses styrene and acrylamide as polymerization monomers to initiate a polymerization reaction on the surface of graphene oxide to form a polymer, so that the mechanical properties of the material can be balanced, and it has certain rigidity and flexibility. In terms of antibacterial properties, graphene itself has certain physical antibacterial properties, and the polymer on the surface can better fix and release the loaded antibacterial components. The polymer network structure formed by the two monomers can provide more loading sites for the products (such as titanium dioxide) after the conversion of tetrabutyl titanate, and these antibacterial components can be better fixed on the graphene surface by physical encapsulation and chemical coordination, thereby increasing the antibacterial component loading of the material, thereby enhancing the overall antibacterial properties, effectively preventing the antibacterial components from falling off, and ensuring the stability of the material structure and the durability of the performance.

[0024] In the preparation process of the fiber finishing liquid, the present application uses hydroxyethyl methacrylate, methacrylic acid and hexafluorobutyl methacrylate as polymerization monomers to form an acrylic resin, and modifies the acrylic resin by N-vinyl pyrrolidone and N-(β-aminoethyl)-γ-aminopropyltrimethoxysilane. Hydroxyethyl methacrylate molecules contain hydroxyl groups, which can be interconnected with other molecular chains through interactions such as hydrogen bonds. This structural feature makes the resin formed by its participation in polymerization have a certain degree of flexibility, and methacrylic acid can form a strong intermolecular force due to the carboxyl group in its molecular structure, which helps to increase the hardness of the resin. The combination of the two can make the resin have both hardness and flexibility. The introduction of hexafluorobutyl methacrylate can reduce the interaction force between polymer molecular chains. At the same time, the fluorine-containing group can also increase the steric hindrance of the polymer, making the molecular chain more stretched, which helps to adjust the flexibility of the resin and make the resin have good elastic recovery properties. The use of N-vinyl pyrrolidone and N-(β-aminoethyl)-γ-aminopropyltrimethoxysilane can not only adjust the crosslinking density of the resin, but also help improve the hardness and wear resistance of the resin. The ring structure can effectively absorb and disperse the energy of ultraviolet rays, thereby enhancing the weather resistance of the resin and reducing aging and discoloration caused by ultraviolet radiation. The presence of N-vinyl pyrrolidone can limit the embrittlement caused by excessive crosslinking of the resin molecular chain, so that the resin can maintain good flexibility while having a certain crosslinking density. This synergistic regulation allows the resin to disperse stress through appropriate crosslinking structures when subjected to external forces, and to resist deformation by using the rigidity brought by N-vinyl pyrrolidone and the flexible part of N-(β-aminoethyl)-γ-aminopropyltrimethoxysilane, thereby optimizing the physical properties of the resin. Through the combined action of the silane coupling agent and the resin matrix, the wear resistance, chemical resistance and durability of the fiber treated with the prepared fiber finishing liquid are significantly improved. DETAILED DESCRIPTION

[0025] The present application is further described in detail below with reference to the embodiments.

[0026] The nylon chips (brand: 1013B) used in the examples and comparative examples of the present application were purchased from Shanghai Haosucheng New Materials Co., Ltd.; ABS resin (brand: PA-757AB) was purchased from Shanghai Jinbo Engineering Plastics Co., Ltd.; graphene oxide was purchased from Lingshou Jianshi Mineral Powder Factory; tetrabutyl titanate was purchased from Shandong Luying Chemical Co., Ltd.; N-(β-aminoethyl)-γ-aminopropyltrimethoxysilane (brand: UP-900) was purchased from Nanjing Youpu Chemical Co., Ltd.; hexafluorobutyl methacrylate was purchased from Jiangsu Leien Environmental Protection Technology Co., Ltd.

[0027] Embodiment 1-3 provides an antibacterial and wear-resistant nylon fiber and a preparation method thereof.

[0028] Example 1 A method for preparing antibacterial and wear-resistant nylon fiber comprises the following steps: Step 1, nylon chips, ABS resin and graphene-loaded antibacterial filler with a mass ratio of 60:22:3 are mixed and added into a screw extruder, and melt-spun at a temperature of 300°C and a pressure of 12MPa, and then stretched and wound to obtain fibers, wherein the stretching process is: double-roller drafting, the speed of roller 1 is 150rpm, and the speed of roller 2 is 225rpm; the winding process is: the reciprocating speed is 50mm / min, and the winding speed is 300rpm; The preparation of graphene-loaded antibacterial filler includes the following steps: (1) Graphene oxide and tetrabutyl titanate were dispersed in deionized water, NaOH was added, the pH was adjusted to 12, and ultrasonic treatment was performed for 1 h, the ultrasonic power was 100 W, and the ultrasonic frequency was 50 kHz to form a uniform mixed solution, wherein the mass ratio of graphene oxide, tetrabutyl titanate and deionized water was 10:1:70; (2) After the mixed liquid and the monomer solution are mixed, ultrasonic dispersion is performed for 30 minutes, the ultrasonic power is 100 W, the ultrasonic frequency is 40 kHz, azobisisobutyronitrile is added, and the mixture is stirred at room temperature for 12 hours at a stirring speed of 600 rpm. The mixture is heated to 50°C, ascorbic acid is added, and the mixture is stirred for 4 hours at a stirring speed of 800 rpm. The mixture is filtered, centrifuged, washed, and dried to obtain a graphene-loaded antibacterial filler, wherein the mass ratio of the mixed liquid, the monomer solution, azobisisobutyronitrile and ascorbic acid is 12:2:0.1:0.1, and the monomer solution is composed of styrene, acrylamide and toluene in a mass ratio of 3:0.5:10.

[0029] Step 2, immersing the fiber obtained in step 1 in a fiber finishing liquid, soaking at 40° C. for 6 hours, adding glutaraldehyde, stirring for reaction for 1 hour, and drying to obtain antibacterial and wear-resistant nylon fiber, wherein the mass ratio of fiber, fiber finishing liquid and glutaraldehyde is 1:10:0.1, and the preparation method of the fiber finishing liquid is as follows: weighing 3 parts of modified acrylic resin, 1 part of emulsifier, 0.2 parts of penetrant, 0.5 parts of antistatic agent and 40 parts of deionized water; adding modified acrylic resin, emulsifier, penetrant and antistatic agent to deionized water, stirring at a stirring rate of 400 rpm and a temperature of 60° C. for 1 hour to obtain the fiber finishing liquid, wherein the emulsifier is NP-10, the penetrant is Aerosol OT, and the antistatic agent is antistatic agent SN; Wherein, the preparation method of modified acrylic resin is: S1. Mix hydroxyethyl methacrylate, methacrylic acid, hexafluorobutyl methacrylate and toluene, stir and heat to 80°C, add azobisisobutyronitrile, heat to 100°C, and react for 6 hours to obtain intermediate a, wherein the mass ratio of hydroxyethyl methacrylate, methacrylic acid, hexafluorobutyl methacrylate, toluene and azobisisobutyronitrile is 4:10:1:40:0.1; S2. Add N-vinyl pyrrolidone and N-(β-aminoethyl)-γ-aminopropyltrimethoxysilane to intermediate a, add triethylamine at 80°C, react for 4 hours, cool to room temperature, distill under reduced pressure, and dry to obtain modified acrylic resin. The mass ratio of intermediate a, N-vinyl pyrrolidone, N-(β-aminoethyl)-γ-aminopropyltrimethoxysilane and triethylamine is 100:1:8:0.2.

[0030] Example 2 A method for preparing antibacterial and wear-resistant nylon fiber comprises the following steps: Step 1, nylon chips, ABS resin and graphene-loaded antibacterial filler with a mass ratio of 65:24:4 are mixed and added into a screw extruder, and melt-spun at a temperature of 310°C and a pressure of 14 MPa, and then stretched and wound to obtain fibers, wherein the stretching process is: double-roller drafting, the speed of roller 1 is 170 rpm, and the speed of roller 2 is 240 rpm; the winding process is: the reciprocating speed is 60 mm / min, and the winding speed is 325 rpm; The preparation of graphene-loaded antibacterial filler includes the following steps: (1) Graphene oxide and tetrabutyl titanate were dispersed in deionized water, NaOH was added, the pH was adjusted to 13, and ultrasonic treatment was performed for 1.5 h, the ultrasonic power was 130 W, and the ultrasonic frequency was 55 kHz to form a uniform mixed solution, wherein the mass ratio of graphene oxide, tetrabutyl titanate and deionized water was 10:2:80; (2) After the mixed liquid and the monomer solution are mixed, ultrasonic dispersion is performed for 35 minutes at an ultrasonic power of 130 W and an ultrasonic frequency of 50 kHz. Azobisisobutyronitrile is added and stirred at room temperature for 15 hours at a stirring speed of 800 rpm. The temperature is raised to 55°C, ascorbic acid is added and stirred for 6 hours at a stirring speed of 900 rpm. The mixture is filtered, centrifuged, washed and dried to obtain a graphene-loaded antibacterial filler, wherein the mass ratio of the mixed liquid, the monomer solution, azobisisobutyronitrile and ascorbic acid is 14:4:0.2:0.15, and the monomer solution is composed of styrene, acrylamide and toluene in a mass ratio of 4:0.8:11.

[0031] Step 2, immersing the fiber obtained in step 1 in a fiber finishing liquid, soaking at 45°C for 7h, adding glutaraldehyde, stirring for reaction for 1.5h, and drying to obtain antibacterial and wear-resistant nylon fiber, wherein the mass ratio of fiber, fiber finishing liquid and glutaraldehyde is 2:10.5:0.2, and the preparation method of the fiber finishing liquid is as follows: weighing 4 parts of modified acrylic resin, 1.2 parts of emulsifier, 0.3 parts of penetrant, 0.8 parts of antistatic agent and 45 parts of deionized water; adding modified acrylic resin, emulsifier, penetrant and antistatic agent to deionized water, stirring at a stirring rate of 500rpm and a temperature of 70°C for 1.5h to obtain the fiber finishing liquid, wherein the emulsifier is NP-10, the penetrant is Aerosol OT, and the antistatic agent is antistatic agent SN; Wherein, the preparation method of modified acrylic resin is: S1. Mix hydroxyethyl methacrylate, methacrylic acid, hexafluorobutyl methacrylate and toluene, stir and heat to 85°C, add azobisisobutyronitrile, heat to 110°C, and react for 7 hours to obtain intermediate a, wherein the mass ratio of hydroxyethyl methacrylate, methacrylic acid, hexafluorobutyl methacrylate, toluene and azobisisobutyronitrile is 5:11:2:50:0.15; S2. Add N-vinyl pyrrolidone and N-(β-aminoethyl)-γ-aminopropyltrimethoxysilane to intermediate a, add triethylamine at 90°C, react for 6 hours, cool to room temperature, distill under reduced pressure, and dry to obtain modified acrylic resin. The mass ratio of intermediate a, N-vinyl pyrrolidone, N-(β-aminoethyl)-γ-aminopropyltrimethoxysilane and triethylamine is 100:3:9:0.4.

[0032] Example 3 A method for preparing antibacterial and wear-resistant nylon fiber comprises the following steps: Step 1, nylon chips, ABS resin and graphene-loaded antibacterial filler with a mass ratio of 70:25:5 are mixed and added into a screw extruder, and melt-spun at a temperature of 320°C and a pressure of 16MPa, and then stretched and wound to obtain fibers, wherein the stretching process is: double-roller drafting, the speed of roller 1 is 200rpm, and the speed of roller 2 is 250rpm; the winding process is: the reciprocating speed is 70mm / min, and the winding speed is 350rpm; The preparation of graphene-loaded antibacterial filler includes the following steps: (1) Graphene oxide and tetrabutyl titanate were dispersed in deionized water, NaOH was added, the pH was adjusted to 14, and ultrasonic treatment was performed for 2 h at an ultrasonic power of 150 W and an ultrasonic frequency of 60 kHz to form a uniform mixed solution, wherein the mass ratio of graphene oxide, tetrabutyl titanate and deionized water was 10:3:90; (2) After the mixed liquid and the monomer solution are mixed, ultrasonic dispersion is performed for 40 minutes at an ultrasonic power of 150 W and an ultrasonic frequency of 60 kHz. Azobisisobutyronitrile is added and stirred at room temperature for 20 hours at a stirring speed of 1000 rpm. The temperature is raised to 60°C, ascorbic acid is added and stirred for 8 hours at a stirring speed of 1000 rpm. The mixture is filtered, centrifuged, washed and dried to obtain a graphene-loaded antibacterial filler, wherein the mass ratio of the mixed liquid, the monomer solution, azobisisobutyronitrile and ascorbic acid is 16:5:0.3:0.2, and the monomer solution is composed of styrene, acrylamide and toluene in a mass ratio of 5:1:12.

[0033] Step 2, immersing the fiber obtained in step 1 in a fiber finishing liquid, soaking at 50°C for 8h, adding glutaraldehyde, stirring for reaction for 2h, and drying to obtain antibacterial and wear-resistant nylon fiber, wherein the mass ratio of fiber, fiber finishing liquid and glutaraldehyde is 3:11:0.3, and the preparation method of the fiber finishing liquid is as follows: weighing 5 parts of modified acrylic resin, 1.4 parts of emulsifier, 0.5 parts of penetrant, 1 part of antistatic agent and 50 parts of deionized water; adding modified acrylic resin, emulsifier, penetrant and antistatic agent to deionized water, stirring for 2h at a stirring rate of 600rpm and a temperature of 80°C to obtain a fiber finishing liquid, wherein the emulsifier is NP-10, the penetrant is Aerosol OT, and the antistatic agent is antistatic agent SN; Wherein, the preparation method of modified acrylic resin is: S1. Mix hydroxyethyl methacrylate, methacrylic acid, hexafluorobutyl methacrylate and toluene, stir and heat to 90°C, add azobisisobutyronitrile, heat to 120°C, and react for 8 hours to obtain intermediate a, wherein the mass ratio of hydroxyethyl methacrylate, methacrylic acid, hexafluorobutyl methacrylate, toluene and azobisisobutyronitrile is 6:12:3:60:0.2; S2. Add N-vinyl pyrrolidone and N-(β-aminoethyl)-γ-aminopropyltrimethoxysilane to intermediate a, add triethylamine at 100°C, react for 8 hours, cool to room temperature, distill under reduced pressure, and dry to obtain modified acrylic resin. The mass ratio of intermediate a, N-vinyl pyrrolidone, N-(β-aminoethyl)-γ-aminopropyltrimethoxysilane and triethylamine is 100:5:10:0.5.

[0034] Comparative Example 1 A method for preparing antibacterial and wear-resistant nylon fiber comprises the following steps: Step 1, nylon chips, ABS resin and graphene-loaded antibacterial filler with a mass ratio of 60:22:3 are mixed and added into a screw extruder, and melt-spun at a temperature of 300°C and a pressure of 12MPa, and then stretched and wound to obtain fibers, wherein the stretching process is: double-roller drafting, the speed of roller 1 is 150rpm, and the speed of roller 2 is 225rpm; the winding process is: the reciprocating speed is 50mm / min, and the winding speed is 300rpm; The preparation of graphene-loaded antibacterial filler includes the following steps: (1) Graphene oxide and tetrabutyl titanate were dispersed in deionized water, NaOH was added, the pH was adjusted to 12, and ultrasonic treatment was performed for 1 h, the ultrasonic power was 100 W, and the ultrasonic frequency was 50 kHz to form a uniform mixed solution, wherein the mass ratio of graphene oxide, tetrabutyl titanate and deionized water was 10:1:70; (2) After the mixed liquid and the monomer solution are mixed, ultrasonic dispersion is performed for 30 minutes, the ultrasonic power is 100 W, the ultrasonic frequency is 40 kHz, azobisisobutyronitrile is added, and the mixture is stirred at room temperature for 12 hours at a stirring speed of 600 rpm. The mixture is heated to 50°C, ascorbic acid is added, and the mixture is stirred for 4 hours at a stirring speed of 800 rpm. The mixture is filtered, centrifuged, washed, and dried to obtain a graphene-loaded antibacterial filler, wherein the mass ratio of the mixed liquid, the monomer solution, azobisisobutyronitrile and ascorbic acid is 12:2:0.1:0.1, and the monomer solution is composed of styrene and toluene in a mass ratio of 3.5:10.

[0035] Step 2, immersing the fiber obtained in step 1 in a fiber finishing liquid, soaking at 40° C. for 6 hours, adding glutaraldehyde, stirring for reaction for 1 hour, and drying to obtain antibacterial and wear-resistant nylon fiber, wherein the mass ratio of fiber, fiber finishing liquid and glutaraldehyde is 1:10:0.1, and the preparation method of the fiber finishing liquid is as follows: weighing 3 parts of modified acrylic resin, 1 part of emulsifier, 0.2 parts of penetrant, 0.5 parts of antistatic agent and 40 parts of deionized water; adding modified acrylic resin, emulsifier, penetrant and antistatic agent to deionized water, stirring at a stirring rate of 400 rpm and a temperature of 60° C. for 1 hour to obtain the fiber finishing liquid, wherein the emulsifier is NP-10, the penetrant is Aerosol OT, and the antistatic agent is antistatic agent SN; Wherein, the preparation method of modified acrylic resin is: S1. Mix hydroxyethyl methacrylate, methacrylic acid, hexafluorobutyl methacrylate and toluene, stir and heat to 80°C, add azobisisobutyronitrile, heat to 100°C, and react for 6 hours to obtain intermediate a, wherein the mass ratio of hydroxyethyl methacrylate, methacrylic acid, hexafluorobutyl methacrylate, toluene and azobisisobutyronitrile is 4:10:1:40:0.1; S2. Add N-vinyl pyrrolidone and N-(β-aminoethyl)-γ-aminopropyltrimethoxysilane to intermediate a, add triethylamine at 80°C, react for 4 hours, cool to room temperature, distill under reduced pressure, and dry to obtain modified acrylic resin. The mass ratio of intermediate a, N-vinyl pyrrolidone, N-(β-aminoethyl)-γ-aminopropyltrimethoxysilane and triethylamine is 100:1:8:0.2.

[0036] Comparative Example 2 A method for preparing antibacterial and wear-resistant nylon fiber comprises the following steps: Step 1, nylon chips, ABS resin and graphene-loaded antibacterial filler with a mass ratio of 60:22:3 are mixed and added into a screw extruder, and melt-spun at a temperature of 300°C and a pressure of 12MPa, and then stretched and wound to obtain fibers, wherein the stretching process is: double-roller drafting, the speed of roller 1 is 150rpm, and the speed of roller 2 is 225rpm; the winding process is: the reciprocating speed is 50mm / min, and the winding speed is 300rpm; The preparation of graphene-loaded antibacterial filler includes the following steps: (1) Graphene oxide and tetrabutyl titanate were dispersed in deionized water, NaOH was added, the pH was adjusted to 12, and ultrasonic treatment was performed for 1 h, the ultrasonic power was 100 W, and the ultrasonic frequency was 50 kHz to form a uniform mixed solution, wherein the mass ratio of graphene oxide, tetrabutyl titanate and deionized water was 10:1:70; (2) After the mixed liquid and the monomer solution are mixed, ultrasonic dispersion is performed for 30 minutes, the ultrasonic power is 100 W, the ultrasonic frequency is 40 kHz, azobisisobutyronitrile is added, and stirring is performed at room temperature for 12 hours, the stirring speed is 600 rpm, the temperature is raised to 50°C, ascorbic acid is added, and the stirring reaction is performed for 4 hours, the stirring speed is 800 rpm, and the mixture is filtered, centrifuged, washed, and dried to obtain a graphene-loaded antibacterial filler, wherein the mass ratio of the mixed liquid, the monomer solution, azobisisobutyronitrile and ascorbic acid is 12:2:0.1:0.1, and the monomer solution is composed of acrylamide and toluene in a mass ratio of 3.5:10.

[0037] Step 2, immersing the fiber obtained in step 1 in a fiber finishing liquid, soaking at 40° C. for 6 hours, adding glutaraldehyde, stirring for reaction for 1 hour, and drying to obtain antibacterial and wear-resistant nylon fiber, wherein the mass ratio of fiber, fiber finishing liquid and glutaraldehyde is 1:10:0.1, and the preparation method of the fiber finishing liquid is as follows: weighing 3 parts of modified acrylic resin, 1 part of emulsifier, 0.2 parts of penetrant, 0.5 parts of antistatic agent and 40 parts of deionized water; adding modified acrylic resin, emulsifier, penetrant and antistatic agent to deionized water, stirring at a stirring rate of 400 rpm and a temperature of 60° C. for 1 hour to obtain the fiber finishing liquid, wherein the emulsifier is NP-10, the penetrant is Aerosol OT, and the antistatic agent is antistatic agent SN; Wherein, the preparation method of modified acrylic resin is: S1. Mix hydroxyethyl methacrylate, methacrylic acid, hexafluorobutyl methacrylate and toluene, stir and heat to 80°C, add azobisisobutyronitrile, heat to 100°C, and react for 6 hours to obtain intermediate a, wherein the mass ratio of hydroxyethyl methacrylate, methacrylic acid, hexafluorobutyl methacrylate, toluene and azobisisobutyronitrile is 4:10:1:40:0.1; S2. Add N-vinyl pyrrolidone and N-(β-aminoethyl)-γ-aminopropyltrimethoxysilane to intermediate a, add triethylamine at 80°C, react for 4 hours, cool to room temperature, distill under reduced pressure, and dry to obtain modified acrylic resin. The mass ratio of intermediate a, N-vinyl pyrrolidone, N-(β-aminoethyl)-γ-aminopropyltrimethoxysilane and triethylamine is 100:1:8:0.2.

[0038] Comparative Example 3 A method for preparing antibacterial and wear-resistant nylon fiber comprises the following steps: Step 1, nylon chips, ABS resin and graphene-loaded antibacterial filler with a mass ratio of 60:22:3 are mixed and added into a screw extruder, and melt-spun at a temperature of 300°C and a pressure of 12MPa, and then stretched and wound to obtain fibers, wherein the stretching process is: double-roller drafting, the speed of roller 1 is 150rpm, and the speed of roller 2 is 225rpm; the winding process is: the reciprocating speed is 50mm / min, and the winding speed is 300rpm; The preparation of graphene-loaded antibacterial filler includes the following steps: (1) Graphene oxide and tetrabutyl titanate were dispersed in deionized water, NaOH was added, the pH was adjusted to 12, and ultrasonic treatment was performed for 1 h, the ultrasonic power was 100 W, and the ultrasonic frequency was 50 kHz to form a uniform mixed solution, wherein the mass ratio of graphene oxide, tetrabutyl titanate and deionized water was 10:1:70; (2) After the mixed liquid and the monomer solution are mixed, ultrasonic dispersion is performed for 30 minutes, the ultrasonic power is 100 W, the ultrasonic frequency is 40 kHz, azobisisobutyronitrile is added, and the mixture is stirred at room temperature for 12 hours at a stirring speed of 600 rpm. The mixture is heated to 50°C, ascorbic acid is added, and the mixture is stirred for 4 hours at a stirring speed of 800 rpm. The mixture is filtered, centrifuged, washed, and dried to obtain a graphene-loaded antibacterial filler, wherein the mass ratio of the mixed liquid, the monomer solution, azobisisobutyronitrile and ascorbic acid is 12:2:0.1:0.1, and the monomer solution is composed of styrene, acrylamide and toluene in a mass ratio of 3:0.5:10.

[0039] Step 2, immersing the fiber obtained in step 1 in a fiber finishing liquid, soaking at 40° C. for 6 hours, adding glutaraldehyde, stirring for reaction for 1 hour, and drying to obtain antibacterial and wear-resistant nylon fiber, wherein the mass ratio of fiber, fiber finishing liquid and glutaraldehyde is 1:10:0.1, and the preparation method of the fiber finishing liquid is as follows: weighing 3 parts of modified acrylic resin, 1 part of emulsifier, 0.2 parts of penetrant, 0.5 parts of antistatic agent and 40 parts of deionized water; adding modified acrylic resin, emulsifier, penetrant and antistatic agent to deionized water, stirring at a stirring rate of 400 rpm and a temperature of 60° C. for 1 hour to obtain the fiber finishing liquid, wherein the emulsifier is NP-10, the penetrant is Aerosol OT, and the antistatic agent is antistatic agent SN; Wherein, the preparation method of modified acrylic resin is: S1. Mix methacrylic acid, hexafluorobutyl methacrylate and toluene, stir and heat to 80°C, add azobisisobutyronitrile, heat to 100°C, and react for 6 hours to obtain intermediate a, wherein the mass ratio of methacrylic acid, hexafluorobutyl methacrylate, toluene and azobisisobutyronitrile is 10:1:40:0.1; S2. Add N-vinyl pyrrolidone and N-(β-aminoethyl)-γ-aminopropyltrimethoxysilane to intermediate a, add triethylamine at 80°C, react for 4 hours, cool to room temperature, distill under reduced pressure, and dry to obtain modified acrylic resin. The mass ratio of intermediate a, N-vinyl pyrrolidone, N-(β-aminoethyl)-γ-aminopropyltrimethoxysilane and triethylamine is 100:1:8:0.2.

[0040] Comparative Example 4 A method for preparing antibacterial and wear-resistant nylon fiber comprises the following steps: Step 1, nylon chips, ABS resin and graphene-loaded antibacterial filler with a mass ratio of 60:22:3 are mixed and added into a screw extruder, and melt-spun at a temperature of 300°C and a pressure of 12MPa, and then stretched and wound to obtain fibers, wherein the stretching process is: double-roller drafting, the speed of roller 1 is 150rpm, and the speed of roller 2 is 225rpm; the winding process is: the reciprocating speed is 50mm / min, and the winding speed is 300rpm; The preparation of graphene-loaded antibacterial filler includes the following steps: (1) Graphene oxide and tetrabutyl titanate were dispersed in deionized water, NaOH was added, the pH was adjusted to 12, and ultrasonic treatment was performed for 1 h, the ultrasonic power was 100 W, and the ultrasonic frequency was 50 kHz to form a uniform mixed solution, wherein the mass ratio of graphene oxide, tetrabutyl titanate and deionized water was 10:1:70; (2) After the mixed liquid and the monomer solution are mixed, ultrasonic dispersion is performed for 30 minutes, the ultrasonic power is 100 W, the ultrasonic frequency is 40 kHz, azobisisobutyronitrile is added, and the mixture is stirred at room temperature for 12 hours at a stirring speed of 600 rpm. The mixture is heated to 50°C, ascorbic acid is added, and the mixture is stirred for 4 hours at a stirring speed of 800 rpm. The mixture is filtered, centrifuged, washed, and dried to obtain a graphene-loaded antibacterial filler, wherein the mass ratio of the mixed liquid, the monomer solution, azobisisobutyronitrile and ascorbic acid is 12:2:0.1:0.1, and the monomer solution is composed of styrene, acrylamide and toluene in a mass ratio of 3:0.5:10.

[0041] Step 2, immersing the fiber obtained in step 1 in a fiber finishing liquid, soaking at 40° C. for 6 hours, adding glutaraldehyde, stirring for reaction for 1 hour, and drying to obtain antibacterial and wear-resistant nylon fiber, wherein the mass ratio of fiber, fiber finishing liquid and glutaraldehyde is 1:10:0.1, and the preparation method of the fiber finishing liquid is as follows: weighing 3 parts of modified acrylic resin, 1 part of emulsifier, 0.2 parts of penetrant, 0.5 parts of antistatic agent and 40 parts of deionized water; adding modified acrylic resin, emulsifier, penetrant and antistatic agent to deionized water, stirring at a stirring rate of 400 rpm and a temperature of 60° C. for 1 hour to obtain the fiber finishing liquid, wherein the emulsifier is NP-10, the penetrant is Aerosol OT, and the antistatic agent is antistatic agent SN; Wherein, the preparation method of modified acrylic resin is: S1. Mix hydroxyethyl methacrylate, methacrylic acid and toluene, stir and heat to 80°C, add azobisisobutyronitrile, heat to 100°C, and react for 6 hours to obtain intermediate a, wherein the mass ratio of hydroxyethyl methacrylate, methacrylic acid, toluene and azobisisobutyronitrile is 4:10:40:0.1; S2. Add N-vinyl pyrrolidone and N-(β-aminoethyl)-γ-aminopropyltrimethoxysilane to intermediate a, add triethylamine at 80°C, react for 4 hours, cool to room temperature, distill under reduced pressure, and dry to obtain modified acrylic resin. The mass ratio of intermediate a, N-vinyl pyrrolidone, N-(β-aminoethyl)-γ-aminopropyltrimethoxysilane and triethylamine is 100:1:8:0.2.

[0042] Comparative Example 5 A method for preparing antibacterial and wear-resistant nylon fiber comprises the following steps: Step 1, nylon chips, ABS resin and graphene-loaded antibacterial filler with a mass ratio of 60:22:3 are mixed and added into a screw extruder, and melt-spun at a temperature of 300°C and a pressure of 12MPa, and then stretched and wound to obtain fibers, wherein the stretching process is: double-roller drafting, the speed of roller 1 is 150rpm, and the speed of roller 2 is 225rpm; the winding process is: the reciprocating speed is 50mm / min, and the winding speed is 300rpm; The preparation of graphene-loaded antibacterial filler includes the following steps: (1) Graphene oxide and tetrabutyl titanate were dispersed in deionized water, NaOH was added, the pH was adjusted to 12, and ultrasonic treatment was performed for 1 h, the ultrasonic power was 100 W, and the ultrasonic frequency was 50 kHz to form a uniform mixed solution, wherein the mass ratio of graphene oxide, tetrabutyl titanate and deionized water was 10:1:70; (2) After the mixed liquid and the monomer solution are mixed, ultrasonic dispersion is performed for 30 minutes, the ultrasonic power is 100 W, the ultrasonic frequency is 40 kHz, azobisisobutyronitrile is added, and the mixture is stirred at room temperature for 12 hours at a stirring speed of 600 rpm. The mixture is heated to 50°C, ascorbic acid is added, and the mixture is stirred for 4 hours at a stirring speed of 800 rpm. The mixture is filtered, centrifuged, washed, and dried to obtain a graphene-loaded antibacterial filler, wherein the mass ratio of the mixed liquid, the monomer solution, azobisisobutyronitrile and ascorbic acid is 12:2:0.1:0.1, and the monomer solution is composed of styrene, acrylamide and toluene in a mass ratio of 3:0.5:10.

[0043] Step 2, immersing the fiber obtained in step 1 in a fiber finishing liquid, soaking at 40° C. for 6 hours, adding glutaraldehyde, stirring for reaction for 1 hour, and drying to obtain antibacterial and wear-resistant nylon fiber, wherein the mass ratio of fiber, fiber finishing liquid and glutaraldehyde is 1:10:0.1, and the preparation method of the fiber finishing liquid is as follows: weighing 3 parts of modified acrylic resin, 1 part of emulsifier, 0.2 parts of penetrant, 0.5 parts of antistatic agent and 40 parts of deionized water; adding modified acrylic resin, emulsifier, penetrant and antistatic agent to deionized water, stirring at a stirring rate of 400 rpm and a temperature of 60° C. for 1 hour to obtain the fiber finishing liquid, wherein the emulsifier is NP-10, the penetrant is Aerosol OT, and the antistatic agent is antistatic agent SN; Wherein, the preparation method of modified acrylic resin is: S1. Mix hydroxyethyl methacrylate, methacrylic acid, hexafluorobutyl methacrylate and toluene, stir and heat to 80°C, add azobisisobutyronitrile, heat to 100°C, and react for 6 hours to obtain intermediate a, wherein the mass ratio of hydroxyethyl methacrylate, methacrylic acid, hexafluorobutyl methacrylate, toluene and azobisisobutyronitrile is 4:10:1:40:0.1; S2. Add N-vinyl pyrrolidone to the intermediate a, add triethylamine at 80°C, react for 4 hours, cool to room temperature, distill under reduced pressure, and dry to obtain a modified acrylic resin. The mass ratio of the intermediate a, N-vinyl pyrrolidone, and triethylamine is 100:9:0.2.

[0044] Comparative Example 6 A method for preparing antibacterial and wear-resistant nylon fiber comprises the following steps: Step 1, nylon chips, ABS resin and graphene-loaded antibacterial filler with a mass ratio of 60:22:3 are mixed and added into a screw extruder, and melt-spun at a temperature of 300°C and a pressure of 12MPa, and then stretched and wound to obtain fibers, wherein the stretching process is: double-roller drafting, the speed of roller 1 is 150rpm, and the speed of roller 2 is 225rpm; the winding process is: the reciprocating speed is 50mm / min, and the winding speed is 300rpm; The preparation of graphene-loaded antibacterial filler includes the following steps: (1) Graphene oxide and tetrabutyl titanate were dispersed in deionized water, NaOH was added, the pH was adjusted to 12, and ultrasonic treatment was performed for 1 h, the ultrasonic power was 100 W, and the ultrasonic frequency was 50 kHz to form a uniform mixed solution, wherein the mass ratio of graphene oxide, tetrabutyl titanate and deionized water was 10:1:70; (2) After the mixed liquid and the monomer solution are mixed, ultrasonic dispersion is performed for 30 minutes, the ultrasonic power is 100 W, the ultrasonic frequency is 40 kHz, azobisisobutyronitrile is added, and the mixture is stirred at room temperature for 12 hours at a stirring speed of 600 rpm. The mixture is heated to 50°C, ascorbic acid is added, and the mixture is stirred for 4 hours at a stirring speed of 800 rpm. The mixture is filtered, centrifuged, washed, and dried to obtain a graphene-loaded antibacterial filler, wherein the mass ratio of the mixed liquid, the monomer solution, azobisisobutyronitrile and ascorbic acid is 12:2:0.1:0.1, and the monomer solution is composed of styrene, acrylamide and toluene in a mass ratio of 3:0.5:10.

[0045] Step 2, immersing the fiber obtained in step 1 in a fiber finishing liquid, soaking at 40° C. for 6 hours, adding glutaraldehyde, stirring for reaction for 1 hour, and drying to obtain antibacterial and wear-resistant nylon fiber, wherein the mass ratio of fiber, fiber finishing liquid and glutaraldehyde is 1:10:0.1, and the preparation method of the fiber finishing liquid is as follows: weighing 3 parts of modified acrylic resin, 1 part of emulsifier, 0.2 parts of penetrant, 0.5 parts of antistatic agent and 40 parts of deionized water; adding modified acrylic resin, emulsifier, penetrant and antistatic agent to deionized water, stirring at a stirring rate of 400 rpm and a temperature of 60° C. for 1 hour to obtain the fiber finishing liquid, wherein the emulsifier is NP-10, the penetrant is Aerosol OT, and the antistatic agent is antistatic agent SN; Wherein, the preparation method of modified acrylic resin is: S1. Mix hydroxyethyl methacrylate, methacrylic acid, hexafluorobutyl methacrylate and toluene, stir and heat to 80°C, add azobisisobutyronitrile, heat to 100°C, and react for 6 hours to obtain intermediate a, wherein the mass ratio of hydroxyethyl methacrylate, methacrylic acid, hexafluorobutyl methacrylate, toluene and azobisisobutyronitrile is 4:10:1:40:0.1; S2. Add N-(β-aminoethyl)-γ-aminopropyltrimethoxysilane to intermediate a, add triethylamine at 80°C, react for 4 hours, cool to room temperature, distill under reduced pressure, and dry to obtain modified acrylic resin. The mass ratio of intermediate a, N-(β-aminoethyl)-γ-aminopropyltrimethoxysilane and triethylamine is 100:9:0.2.

[0046] Performance Testing The antibacterial and wear-resistant nylon fibers prepared in Examples 1-3 and Comparative Examples 1-6 were woven using a plain weave process, with a woven length of 20 cm, a width of 5 cm, and a warp and weft density of 218 strands / 10 cm×210 strands / 10 cm, and the woven samples were subjected to performance tests.

[0047] Breaking strength test: Tested according to the national standard GB / T 3923.1-2013 "Tensile properties of textile fabrics Part 1: Determination of breaking strength and elongation at break by strip method"; Antibacterial rate test: Tested according to the national standard GB / T 20944.3-2008 "Evaluation of antibacterial properties of textiles Part 3: Oscillation method"; Wear resistance test: Tested according to the national standard GB / T 21196.2-2007 "Determination of the abrasion resistance of textile fabrics by the Martindale method Part 2: Determination of specimen damage"; Antifouling test: Tested in accordance with the liquid staining method in the national standard GB / T 30159.1-2013 "Testing and evaluation of antifouling performance of textiles Part 1: Stain resistance"; Wrinkle resistance test: Tested in accordance with the national standard GB / T3819-1997 "Determination of crease recovery of textile fabrics - recovery angle method"; The test results are shown in Table 1.

[0048] Table 1 Performance parameters of antibacterial and wear-resistant nylon fibers prepared in Examples 1-3 and Comparative Examples 1-6

[0049] As can be seen from Table 1, the antibacterial and wear-resistant nylon fiber prepared in this application not only exhibits excellent antibacterial effect when first used, but also has excellent antibacterial performance and long-lasting antibacterial properties after multiple washings. In addition, the fiber also performs well in mechanical properties, wear resistance, wrinkle resistance and antifouling properties, and can meet the needs of high-end textiles and functional clothing.

[0050] This specific embodiment is merely an explanation of the present application and is not a limitation of the present application. After reading this specification, those skilled in the art may make modifications to the present embodiment without any creative contribution as needed, but such modifications are protected by the patent law as long as they are within the scope of the claims of the present application.

Claims

1. A method for preparing antibacterial and wear-resistant nylon fiber, characterized in that: The following steps are involved: Step 1, nylon chips, ABS resin and graphene-loaded antibacterial filler are mixed and added into a screw extruder, melt-spun at a temperature of 300-320° C. and a pressure of 12-16 MPa, and then stretched and wound to obtain fibers; Step 2: immerse the fiber obtained in step 1 in a fiber finishing solution at 40-50° C. for 6-8 hours, add glutaraldehyde, stir and react for 1-2 hours, and dry to obtain antibacterial and wear-resistant nylon fiber.

2. The method for preparing the antibacterial and wear-resistant nylon fiber according to claim 1, characterized in that: In the step 1, the mass ratio of nylon chips, ABS resin and graphene-loaded antibacterial filler is 60-70:22-25:3-5; the stretching process is double-roller drawing, the rotation speed of roller 1 is 150-200rpm, and the rotation speed of roller 2 is 225-250rpm; the winding process is: the reciprocating speed is 50-70mm / min, and the winding speed is 300-350rpm; in the step 2, the mass ratio of fiber and fiber finishing liquid is 1-3:10-11.

3. The method for preparing the antibacterial and wear-resistant nylon fiber according to claim 1, characterized in that: The preparation of the graphene-loaded antibacterial filler comprises the following steps: (1) Dispersing graphene oxide and tetrabutyl titanate in deionized water, adding NaOH, adjusting the pH to 12-14, and ultrasonically treating for 1-2 hours to form a uniform mixed solution; (2) After the mixed solution and the monomer solution are mixed, ultrasonic dispersion is performed for 30-40 minutes, azobisisobutyronitrile is added, and the mixture is stirred at room temperature for 12-20 hours. The mixture is heated to 50-60° C., ascorbic acid is added, and the mixture is stirred for 4-8 hours. The mixture is filtered, centrifuged, washed, and dried to obtain a graphene-loaded antibacterial filler.

4. The method for preparing the antibacterial and wear-resistant nylon fiber according to claim 3, characterized in that: In the step (1), the mass ratio of graphene oxide to tetrabutyl titanate is 10:1-3; the monomer solution in the step (2) is composed of styrene, acrylamide and toluene in a mass ratio of 3-5:0.5-1:10-12; and the mass ratio of the mixed solution to the monomer solution is 12-16:2-5.

5. The method for preparing the antibacterial and wear-resistant nylon fiber according to claim 1, characterized in that: The preparation method of the fiber finishing liquid is as follows: weigh 3-5 parts of modified acrylic resin, 1-1.4 parts of emulsifier, 0.2-0.5 parts of penetrant, 0.5-1 parts of antistatic agent and 40-50 parts of deionized water; add the modified acrylic resin, emulsifier, penetrant and antistatic agent into the deionized water, stir for 1-2 hours at a stirring rate of 400-600 rpm and a temperature of 60-80° C., and obtain the fiber finishing liquid.

6. The method for preparing the antibacterial and wear-resistant nylon fiber according to claim 5, characterized in that: The preparation method of the modified acrylic resin is: S1. Mix hydroxyethyl methacrylate, methacrylic acid, hexafluorobutyl methacrylate and toluene, stir and heat to 80-90°C, add initiator, heat to 100-120°C, react for 6-8h to obtain intermediate a; S2. Add N-vinyl pyrrolidone and N-(β-aminoethyl)-γ-aminopropyltrimethoxysilane to the intermediate a, add triethylamine at a temperature of 80-100°C, react for 4-8 hours, cool to room temperature, distill under reduced pressure, and dry to obtain a modified acrylic resin.

7. The method for preparing the antibacterial and wear-resistant nylon fiber according to claim 6, characterized in that: In the step S1, the mass ratio of hydroxyethyl methacrylate, methacrylic acid and hexafluorobutyl methacrylate is 4-6:10-12:1-3.

8. The method for preparing the antibacterial and wear-resistant nylon fiber according to claim 6, characterized in that: In the step S2, the mass ratio of the intermediate a, N-vinyl pyrrolidone and N-(β-aminoethyl)-γ-aminopropyltrimethoxysilane is 100:1-5:8-10:0.2-0.

5.

9. An antibacterial and wear-resistant nylon fiber prepared by the preparation method as claimed in any one of claims 1 to 8.

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