Tear-resistant garment material and weaving method thereof

Abstract

The invention belongs to the technical field of fabric preparation, and particularly relates to a tear-resistant garment fabric and a weaving method thereof.The tear-resistant garment fabric is prepared by modifying PBO fibers with epoxy resin to obtain modified PBO fibers and modifying nylon fibers with alkylamine grafted montmorillonite to obtain modified nylon fibers; modifying cotton fibers by using organic siloxane to obtain organic silicon modified cotton fibers; the modified nylon fibers and the polyester fibers are twisted to serve as warp yarns; the modified PBO fibers and the organic silicon modified cotton fibers are twisted to serve as weft yarns; weaving the warp yarns and the weft yarns to obtain the garment material with good wear resistance and tear resistance.

Description

Technical Field

[0001] The invention relates to the technical field of fabric preparation, and in particular to a tear-resistant clothing fabric and a weaving method thereof. Background Art

[0002] With the improvement of social industrialization, textiles no longer exist to satisfy their value of wearing. Different industries have different demands for textiles, and functional textiles have emerged. With the rise of outdoor sports culture, the research and development of outdoor sportswear has become a hot topic. Although there is no essential difference between outdoor sportswear and home clothes, due to the characteristics of outdoor and sports, the corresponding clothing must have good heat dissipation, breathability, and moisture permeability. In the wild, wind, rain, snow, fog, dust, and mud, clothing is required to be waterproof, anti-fouling, antibacterial and deodorizing. Wild rock climbing requires clothing to have good tensile resistance, tear resistance, and wear resistance.

[0003] The Chinese patent with publication number CN118745620A discloses a lightweight tear-resistant fabric based on bulletproof components and a preparation method thereof. The lightweight tear-resistant fabric is woven with nylon 66 masterbatch yarn as the warp yarn and ultra-high molecular weight polyethylene masterbatch yarn as the weft yarn; the fabric is obtained by blending ultra-high molecular weight polyethylene fiber with nylon 66, and the fabric has the characteristics of low density and high strength of ultra-high molecular weight polyethylene, so that the fabric has both light weight, tear resistance and wear resistance; and when preparing the fabric, a vibration drafting link is added to promote melting. The release of internal stress between fibers after spinning ensures fiber strength, and thus ensures the mechanical properties of the fabric; Chinese patent with publication number CN114672915B discloses a tear-resistant fabric and its preparation method, using nylon, modified silicon carbide, polyester fiber, phenolic fiber, propylene, tetrafluoroethylene, modified flax fiber, anhydrous ethanol and potassium persulfate as raw materials, twisting silicon carbide modified nylon fiber and polyester fiber to form warp yarn, and interlacing polypropylene-tetrafluoroethylene fiber, phenolic fiber and flax fiber to form weft yarn, and weaving the warp and weft into tear-resistant fabric. However, the preparation of the above-mentioned modified fibers is obtained by directly mixing the raw materials, which is prone to the problem of material agglomeration and uneven mixing. Therefore, it is urgent to study a new preparation method to make the mixing between the raw materials more uniform, thereby improving the relevant performance of the prepared fabric. Summary of the invention

[0004] In order to solve the problems existing in the prior art, the present invention provides a tear-resistant clothing fabric and a weaving method thereof, using modified PBO fiber, modified nylon fiber, silicone-modified cotton fiber and polyester fiber as raw materials to prepare a wear-resistant and tear-resistant clothing fabric.

[0005] The technical solution provided by the present invention to solve the above technical problems is as follows:

[0006] A tear-resistant clothing fabric comprises the following raw materials in parts by weight: 60-80 parts of modified PBO fiber, 80-100 parts of modified nylon fiber, 100-150 parts of organosilicon-modified cotton fiber, and 100-120 parts of polyester fiber;

[0007] The modified PBO fiber is epoxy resin modified PBO fiber, the modified nylon fiber is alkylamine grafted montmorillonite modified nylon fiber, and the organosilicon modified cotton fiber is organosilicon coated cotton fiber.

[0008] Furthermore, the preparation method of the modified PBO fiber is:

[0009] A1. Add pretreated PBO fiber to a mixture of methane sulfonic acid and hydrogen peroxide, raise the temperature to 60-80°C and react for 6-8h. During the reaction, add hydrogen peroxide solution to the mixture every 1-2h. After reacting for 6-8h, wash and dry to obtain acidified PBO fiber; wherein the concentration of methane sulfonic acid is 65wt%, the concentration of hydrogen peroxide is 30%, the volume ratio of methane sulfonic acid to hydrogen peroxide is 3-5:1, wash with deionized water 3-5 times, and then dry in a vacuum oven at 40-50°C for 20-40min; the amount of pretreated PBO fiber in methane sulfonic acid is 0.08-0.12g / mL;

[0010] A2. Add N,N-dimethylformamide, dicyclohexylcarbodiimide, melamine and acidified PBO fiber into a reactor, raise the temperature to 110-125° C. and react for 45-60 hours. After the reaction is completed, wash and dry to obtain aminated PBO fiber; wherein the mass ratio of dicyclohexylcarbodiimide to melamine is 1:1.5-1.8, the amount of dicyclohexylcarbodiimide in N,N-dimethylformamide is 0.02-0.04 g / mL, and the amount of acidified PBO fiber in N,N-dimethylformamide is 0.08-0.12 g / mL; the washing method is: first wash with N,N-dimethylformamide 2-3 times, and then wash with hot deionized water 3-5 times; the drying conditions are: dry in a vacuum oven at 40-50° C. for 20-40 minutes;

[0011] A3. Add epoxy resin to the reactor, heat to 40-50°C, then add aminated PBO fiber and KOH, stir at constant temperature for 10-20 minutes, then increase the temperature to 60-70°C and stir for 8-12 hours. After the reaction is completed, take out the fiber, wash and dry it to obtain the modified PBO fiber; wherein the mass ratio of epoxy resin, aminated PBO fiber and KOH is 22-30:18-22:1, and the washing method is: washing with anhydrous ethanol for 3-5 times; the drying conditions are: drying in a vacuum oven at 40-50°C for 20-40 minutes.

[0012] Furthermore, in step A1, the pretreatment process of the PBO fiber is: placing the PBO fiber in a Soxhlet extractor, using a mixture of petroleum ether and acetone, reflux at 120° C. for 2 days, taking out the fiber from the Soxhlet extractor, washing it with deionized water and then drying it to obtain the pretreated PBO fiber; wherein the volume ratio of petroleum ether to acetone is 2:1.

[0013] Poly(p-phenylene benzobisoxazole) fiber (PBO fiber) has a light specific gravity and good mechanical properties. Its excellent performance is attributed to its highly oriented structure. The benzene ring and oxazole in the molecular chain of PBO fiber are coplanar, and the molecular chains can be closely stacked. The structural components of the PBO molecular chain can produce a strong conjugation effect, resulting in greater rigidity. Therefore, the PBO macromolecule has a straight chain conformation and oriented order, and the molecular chains are closely stacked. However, while the highly oriented structure gives PBO fiber good mechanical properties, it also makes the surface of PBO fiber chemically inert and lacks active functional groups, and the surface bonding force is poor. The smooth surface of the epoxy resin coating can reduce the friction between objects, thereby reducing wear and stress concentration, and improving the load-bearing capacity. In addition, the epoxy resin will open the ring and react with the primary amino group to form secondary amine under mild conditions due to its own tension, and has good adhesion. Therefore, in the present invention, the PBO fiber is firstly acidified by a mixed solution of methanesulfonic acid and hydrogen peroxide, and then the acidified PBO fiber is aminated by N,N-dimethylformamide, dicyclohexylcarbodiimide and melamine, and finally reacted with epoxy resin, the epoxy groups contained react with the aminated PBO fiber, and the epoxy resin is grafted on the surface of the PBO fiber, which effectively improves the toughness and wear resistance of the PBO fiber, and the PBO fiber and the epoxy resin are combined by chemical bonds, and the combination is tighter.

[0014] Furthermore, the preparation method of the modified nylon fiber is:

[0015] B1. Add montmorillonite to anhydrous ethanol, ultrasonically disperse for 2-4 hours, then add alkylamine thereto, heat to 70-85° C., stir and react for 4-6 hours, and after the reaction is completed, wash and dry the product to obtain alkylamine-grafted montmorillonite; wherein the mass ratio of montmorillonite to alkylamine is 1:1.5-2; the amount of montmorillonite in anhydrous ethanol is 0.002-0.006 g / mL, the washing conditions are: washing with anhydrous ethanol 3-5 times, and the drying conditions are: drying at 50-60° C. for 30-50 min;

[0016] B2. Add nylon fiber into a reactor, heat it to a molten state, add montmorillonite grafted with alkylamine thereto, stir for 1-3 hours in a molten state, and spin to obtain the modified nylon fiber; wherein the mass ratio of nylon fiber to montmorillonite grafted with alkylamine is 2-3:1.

[0017] Furthermore, in step B1, the alkylamine is any one of dodecylamine, tetradecylamine, hexadecylamine and octadecylamine.

[0018] Montmorillonite is a layered hydrated aluminum silicate, and its structural lamellae are composed of two layers of silicon-oxygen tetrahedrons sandwiching a layer of aluminum-oxygen octahedron, which are connected by shared oxygen atoms, and the interlayers are connected by weak dipole moments, van der Waals forces, hydrogen bonds and other comprehensive effects. The lamellae can randomly translate and rotate, and when subjected to external forces, the lamellae can randomly slide against each other, thereby improving the wear resistance and tensile properties of the material. However, montmorillonite has a strong tendency to agglomerate and has poor compatibility with most polymers. Therefore, in the present invention, alkylamine is used to modify montmorillonite. The surface of montmorillonite has a large number of oxygen-containing functional groups, which can undergo alkylation reactions with amino groups on the alkylamines, and the presence of long carbon chains on the long-chain alkylamines can effectively prevent the agglomeration of montmorillonite, and can also play a lubricating role when the lamellae move under external forces, thereby reducing friction. Nylon fiber has strong wear resistance, low density and good chemical stability. In particular, nylon fiber has good elasticity, can quickly recover to its original state, and can maintain high strength and elasticity under high temperature and chemical substances; however, it is easy to deform and deform when subjected to a small external force, has a large friction coefficient, and is easy to generate static electricity by friction with metal parts; therefore, in the present invention, alkylamine-grafted montmorillonite is blended with nylon to obtain modified nylon fiber, thereby increasing the antistatic property of nylon and reducing the deformation of nylon when subjected to force.

[0019] Furthermore, the preparation method of the organosilicon-modified cotton fiber is:

[0020] C1. Mix hydrochloric acid, isopropanol and deionized water to obtain solution A; wherein the concentration of hydrochloric acid is 2 mol / L, and the volume ratio of hydrochloric acid, isopropanol and deionized water is 5:30:9;

[0021] C2. Add organosiloxane and tetraethyl orthosilicate to solution A, heat to 40-50°C and stir for 20-40 minutes, then add cotton fiber, stir at constant temperature for 18-24 hours, take out the cotton fiber and place it in an oven, keep it at 40-50°C for 10-20 minutes, then increase the temperature to 110-120°C and keep it for 4-6 hours to obtain organosilicon-modified cotton fiber; wherein the molar ratio of organosiloxane to tetraethyl orthosilicate is 1.2-2:1; and the amount of cotton fiber in tetraethyl orthosilicate is 0.10-0.15 g / mL.

[0022] Furthermore, the organosiloxane is methyltrimethoxysilane.

[0023] Cotton fiber is a natural fiber, does not contain harmful substances, is harmless to the human body, does not pollute the environment, has good softness and comfort, and also has good moisture absorption and air permeability, but it is easy to wrinkle and shrink. Therefore, in the present invention, the cotton fiber is immersed in a mixed solution containing organic siloxane and tetraethyl orthosilicate, and the organic silicon modified cotton fiber is obtained by heating reaction; the tetraethyl orthosilicate is hydrolyzed to generate a large number of Si-OH bonds and the Si-OH functional groups in methyltrimethoxysilane undergo condensation reaction, so that the two phases can be fully bonded to form a covalent bond, so that the components can be closely combined to form an inorganic network structure, which is attached to the surface of the cotton fiber, and effectively solves the problem that the cotton fiber is easy to wrinkle and shrink.

[0024] The present invention also provides a method for weaving tear-resistant clothing fabrics, comprising the following steps:

[0025] S1, twisting modified nylon fiber and polyester fiber, with every two strands of polyester fiber being matched with one strand of modified nylon fiber, and a total of 6-12 fibers being twisted into yarn, which is used as warp yarn;

[0026] S2, twisting the modified PBO fiber and the organosilicon modified cotton fiber, wherein every two strands of organosilicon modified cotton fiber are matched with one strand of modified PBO fiber, and a total of 6-18 fibers are twisted into yarn, which is used as weft yarn;

[0027] S3. Weaving the warp yarn obtained in step S1 and the weft yarn obtained in step S2, wherein the warp yarn density is 360-380 yarns / 10 cm, and the weft yarn density is 240-280 yarns / 10 cm, to obtain the tear-resistant clothing fabric.

[0028] The present invention has the following beneficial effects:

[0029] The invention uses epoxy resin to modify PBO fiber to obtain modified PBO fiber, and grafts epoxy resin on the surface of PBO fiber to effectively improve the toughness and wear resistance of PBO fiber; uses alkylamine to graft montmorillonite to modify nylon fiber to obtain modified nylon fiber, and montmorillonite has a lamellar structure, and the lamellar layers can randomly slide against each other when subjected to external force, thereby improving the wear resistance and tensile properties of the material; uses organic siloxane to modify cotton fiber to obtain organic silicon modified cotton fiber, and a large number of Si-OH bonds generated by hydrolysis of ethyl orthosilicate react with Si-OH functional groups in methyltrimethoxysilane to enable the two phases to fully bond to form covalent bonds, which are attached to the surface of cotton fiber to form an inorganic network structure, thereby effectively solving the problem that cotton fiber is prone to wrinkles and shrinkage; finally, the modified nylon fiber and polyester fiber are twisted to be used as warp yarn; the modified PBO fiber and organic silicon modified cotton fiber are twisted to be used as weft yarn; the warp yarn and the weft yarn are woven to obtain clothing fabrics with good wear resistance and good tear resistance. DETAILED DESCRIPTION

[0030] The following will be combined with the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0031] The PBO fiber (HM type, fiber monofilament diameter of 12um, tensile strength of 5.8GPa, tensile modulus of 280GPa, elongation at break of 2.3%, brand ZYLON) used in the present invention was purchased from Toyobo Co., Ltd. of Japan; nylon fiber (PA / 40D) was purchased from Qingdao Xinwei Textile Development Co., Ltd.; cotton fiber was purchased from Shandong Jinyue Textile Co., Ltd.; polyester fiber was purchased from Baoding Qianting Textile Manufacturing Co., Ltd.; methane sulfonic acid, melamine, petroleum ether, and acetone were all purchased from Chengdu Kelong Chemical Reagent Factory; dicyclohexylcarbodiimide was purchased from Dongguan Varisi Chemical Co., Ltd.; epoxy resin (E-44) was purchased from Nantong Xingchen Synthetic Materials Co., Ltd.; montmorillonite (brand DK0) was purchased from Zhejiang Fenghong Clay Co., Ltd.; methyltrimethoxysilane, ethyl orthosilicate, and isopropanol were all analytically pure and purchased from Sinopharm Chemical Reagent Co., Ltd.; all reagents were commercially available.

[0032] Embodiment 1

[0033] A tear-resistant clothing fabric, comprising the following raw materials in parts by weight: 65 parts of modified PBO fiber, 85 parts of modified nylon fiber, 110 parts of organosilicon-modified cotton fiber, and 105 parts of polyester fiber;

[0034] The modified PBO fiber is epoxy resin modified PBO fiber, the modified nylon fiber is alkylamine grafted montmorillonite modified nylon fiber, and the organosilicon modified cotton fiber is organosilicon coated cotton fiber.

[0035] Wherein, the preparation method of modified PBO fiber is:

[0036] A1. Add pretreated PBO fiber to a mixture of methane sulfonic acid and hydrogen peroxide, raise the temperature to 65°C and react for 7 hours. During the reaction, add hydrogen peroxide solution to the mixture every 1 hour. After reacting for 6 hours, wash and dry to obtain acidified PBO fiber; wherein the concentration of methane sulfonic acid is 65wt%, the concentration of hydrogen peroxide is 30%, and the volume ratio of methane sulfonic acid to hydrogen peroxide is 4:1; the amount of hydrogen peroxide solution added each time is the same as the amount of hydrogen peroxide added at the beginning, that is, the same volume of hydrogen peroxide solution is added each time; after washing with deionized water 4 times, place in a vacuum oven at 45°C and dry for 30 minutes; the amount of pretreated PBO fiber in methane sulfonic acid is 0.10g / mL;

[0037] A2. Add N,N-dimethylformamide, dicyclohexylcarbodiimide, melamine and acidified PBO fiber into a reactor, raise the temperature to 120°C and react for 50 hours. After the reaction is completed, wash and dry to obtain aminated PBO fiber; wherein the mass ratio of dicyclohexylcarbodiimide to melamine is 1:1.6, the amount of dicyclohexylcarbodiimide in N,N-dimethylformamide is 0.02 g / mL, and the amount of acidified PBO fiber in N,N-dimethylformamide is 0.10 g / mL; the washing method is: first wash with N,N-dimethylformamide for 3 times, and then wash with hot deionized water for 5 times; the drying condition is: dry in a vacuum oven at 45°C for 30 minutes;

[0038] A3. Add epoxy resin to the reactor, heat to 45°C, add aminated PBO fiber and KOH, stir at constant temperature for 20 minutes, then increase the temperature to 65°C and stir for 10 hours. After the reaction is completed, take out the fiber, wash and dry it to obtain modified PBO fiber; the mass ratio of epoxy resin, aminated PBO fiber and KOH is 25:21:1, the washing method is: washing with anhydrous ethanol for 5 times; the drying condition is: drying in a vacuum oven at 45°C for 30 minutes.

[0039] Among them, in step A1, the pretreatment process of PBO fiber is: put the PBO fiber into a Soxhlet extractor, use a mixture of petroleum ether and acetone, reflux at 120° C. for 2 days, take out the fiber from the Soxhlet extractor, wash it with deionized water and then dry it to obtain pretreated PBO fiber; wherein the volume ratio of petroleum ether to acetone is 2:1.

[0040] The preparation method of modified nylon fiber is:

[0041] B1. Add montmorillonite to anhydrous ethanol, add alkylamine thereto after ultrasonic dispersion for 3 hours, heat to 80°C and stir to react for 5 hours. After the reaction is completed, wash and dry the product to obtain alkylamine-grafted montmorillonite; wherein the mass ratio of montmorillonite to alkylamine is 1:1.8; the amount of montmorillonite in anhydrous ethanol is 0.004 g / mL, the washing conditions are: wash with anhydrous ethanol 5 times, and the drying conditions are: dry at 55°C for 35 minutes;

[0042] B2. Add nylon fiber into the reactor, heat it to a molten state, add montmorillonite grafted with alkylamine thereto, stir for 2 hours in a molten state, and spin to obtain modified nylon fiber; wherein the mass ratio of nylon fiber to montmorillonite grafted with alkylamine is 2.5:1.

[0043] Wherein, the alkylamine is hexadecylamine.

[0044] Wherein, the preparation method of organosilicon modified cotton fiber is:

[0045] C1. Mix hydrochloric acid, isopropanol and deionized water to obtain solution A; wherein the concentration of hydrochloric acid is 2 mol / L, and the volume ratio of hydrochloric acid, isopropanol and deionized water is 5:30:9;

[0046] C2. Add organosiloxane and tetraethyl orthosilicate to solution A, heat to 45°C and stir for 30 minutes, then add cotton fiber, stir at constant temperature for 22 hours, take out the cotton fiber and place it in an oven, keep it at 45°C for 15 minutes, then increase the temperature to 115°C and keep it for 5 hours to obtain organosilicon-modified cotton fiber; wherein the molar ratio of organosiloxane to tetraethyl orthosilicate is 1.5:1; and the amount of cotton fiber in tetraethyl orthosilicate is 0.12 g / mL.

[0047] Wherein, the organosiloxane is methyltrimethoxysilane.

[0048] A method for weaving tear-resistant clothing fabrics comprises the following steps:

[0049] S1, twisting modified nylon fiber and polyester fiber, with every two strands of polyester fiber being matched with one strand of modified nylon fiber, and a total of 6 fibers being twisted into yarn, which is used as warp yarn;

[0050] S2, twisting the modified PBO fiber and the organosilicon-modified cotton fiber, wherein every two strands of organosilicon-modified cotton fiber are matched with one strand of modified PBO fiber, and a total of 6 fibers are twisted into yarn, which is used as weft yarn;

[0051] S3. The warp yarn obtained in step S1 and the weft yarn obtained in step S2 are used for weaving, wherein the warp yarn density is 360 yarns / 10 cm, and the weft yarn density is 240 yarns / 10 cm, to obtain tear-resistant clothing fabric.

[0052] Embodiment 2

[0053] Compared with the first embodiment, this embodiment has the following differences, specifically:

[0054] A tear-resistant clothing fabric comprises the following raw materials in parts by weight: 60 parts of modified PBO fiber, 80 parts of modified nylon fiber, 100 parts of organosilicon-modified cotton fiber, and 100 parts of polyester fiber;

[0055] In the preparation method of modified PBO fiber, in step A1, the pretreated PBO fiber is added to the mixed solution of methane sulfonic acid and hydrogen peroxide, and the temperature is raised to 60°C for reaction for 6 hours, and the volume ratio of methane sulfonic acid to hydrogen peroxide is 3:1; after washing with deionized water three times, it is placed in a vacuum oven at 40°C and dried for 20 minutes; the amount of the pretreated PBO fiber in methane sulfonic acid is 0.08 g / mL;

[0056] In step A2, N,N-dimethylformamide, dicyclohexylcarbodiimide, melamine and acidified PBO fiber are added to the reactor and the temperature is raised to 110° C. for reaction for 45 hours. The mass ratio of dicyclohexylcarbodiimide to melamine is 1:1.5, the amount of dicyclohexylcarbodiimide in N,N-dimethylformamide is 0.03 g / mL, and the amount of acidified PBO fiber in N,N-dimethylformamide is 0.08 g / mL. The washing method is: first washing with N,N-dimethylformamide twice, and then washing with hot deionized water three times. The drying condition is: drying in a vacuum oven at 40° C. for 20 minutes.

[0057] In step A3, epoxy resin is added to the reactor, and after heating to 40°C, aminated PBO fiber and KOH are added, and the mixture is stirred at a constant temperature for 10 minutes, and then the temperature is increased to 60°C and stirred for 8 hours. The mass ratio of epoxy resin, aminated PBO fiber and KOH is 22:18:1. The washing method is: washing with anhydrous ethanol for 3 times; the drying condition is: drying in a vacuum oven at 40°C for 20 minutes.

[0058] In the preparation process of modified nylon fiber, in step B1, montmorillonite is added to anhydrous ethanol and then ultrasonically dispersed for 2 hours, and then alkylamine is added thereto, heated to 70°C and stirred for reaction for 4 hours, and the mass ratio of montmorillonite to alkylamine is 1:1.5; the amount of montmorillonite in anhydrous ethanol is 0.002 g / mL, the washing conditions are: washing with anhydrous ethanol 3 times, and the drying conditions are: drying at 50°C for 30 minutes;

[0059] In step B2, nylon fiber is added into the reactor, and after heating to a molten state, montmorillonite grafted with alkylamine is added thereto, and stirred in a molten state for 1 hour. The mass ratio of nylon fiber to montmorillonite grafted with alkylamine is 2:1.

[0060] The alkylamine is tetradecylamine.

[0061] In the preparation process of organosilicon-modified cotton fiber, in step C2, organosiloxane and tetraethyl orthosilicate are added to solution A, heated to 40°C and stirred for 20 minutes, cotton fiber is added, and stirred at constant temperature for 18 hours. The cotton fiber is taken out and placed in an oven, kept at 40°C for 10 minutes, and then the temperature is increased to 110°C and kept for 4 hours to obtain organosilicon-modified cotton fiber, the molar ratio of organosiloxane to tetraethyl orthosilicate is 1.2:1; the amount of cotton fiber in tetraethyl orthosilicate is 0.10 g / mL.

[0062] A method for weaving tear-resistant clothing fabrics comprises the following steps:

[0063] S1, twisting modified nylon fiber and polyester fiber, with every two strands of polyester fiber being matched with one strand of modified nylon fiber, and a total of 10 fibers being twisted into yarn, which is used as warp yarn;

[0064] S2, twisting the modified PBO fiber and the organosilicon modified cotton fiber, wherein every two strands of organosilicon modified cotton fiber are matched with one strand of modified PBO fiber, and a total of 12 fibers are twisted into yarn, which is used as weft yarn;

[0065] S3. The warp yarn obtained in step S1 and the weft yarn obtained in step S2 are used for weaving, wherein the warp yarn density is 380 yarns / 10 cm, and the weft yarn density is 250 yarns / 10 cm, to obtain tear-resistant clothing fabric.

[0066] The rest is as per Example 1.

[0067] Embodiment 3

[0068] Compared with the first embodiment, this embodiment has the following differences, specifically:

[0069] A tear-resistant clothing fabric comprises the following raw materials in parts by weight: 80 parts of modified PBO fiber, 100 parts of modified nylon fiber, 150 parts of organosilicon-modified cotton fiber, and 120 parts of polyester fiber;

[0070] In the preparation method of modified PBO fiber, in step A1, the pretreated PBO fiber is added to the mixed solution of methane sulfonic acid and hydrogen peroxide, and the temperature is raised to 80°C for reaction for 8 hours, and the volume ratio of methane sulfonic acid to hydrogen peroxide is 5:1; after washing with deionized water 5 times, it is placed in a vacuum oven at 50°C and dried for 40 minutes; the amount of the pretreated PBO fiber in methane sulfonic acid is 0.12 g / mL;

[0071] In step A2, N,N-dimethylformamide, dicyclohexylcarbodiimide, melamine and acidified PBO fiber are added to the reactor and then the temperature is raised to 125° C. for reaction for 60 hours, the mass ratio of dicyclohexylcarbodiimide to melamine is 1:1.8, the amount of dicyclohexylcarbodiimide in N,N-dimethylformamide is 0.04 g / mL, and the amount of acidified PBO fiber in N,N-dimethylformamide is 0.12 g / mL; the washing method is: first washing with N,N-dimethylformamide for 3 times, and then washing with hot deionized water for 5 times; the drying condition is: drying in a vacuum oven at 50° C. for 40 minutes;

[0072] In step A3, epoxy resin is added to the reactor, and after heating to 50°C, aminated PBO fiber and KOH are added, and the mixture is stirred at a constant temperature for 20 minutes, and then the temperature is increased to 70°C and stirred for 12 hours. The mass ratio of epoxy resin, aminated PBO fiber and KOH is 30:22:1. The washing method is: washing with anhydrous ethanol for 5 times; the drying condition is: drying in a vacuum oven at 50°C for 40 minutes.

[0073] In the preparation process of modified nylon fiber, in step B1, montmorillonite is added to anhydrous ethanol and then ultrasonically dispersed for 4 hours, and then alkylamine is added thereto, and the mixture is heated to 85°C and stirred for reaction for 6 hours. The mass ratio of montmorillonite to alkylamine is 1:2. The amount of montmorillonite in anhydrous ethanol is 0.006 g / mL, and the washing conditions are: washing with anhydrous ethanol for 5 times, and the drying conditions are: drying at 60°C for 50 minutes.

[0074] In step B2, nylon fiber is added into the reactor, and after heating to a molten state, montmorillonite grafted with alkylamine is added thereto, and stirred for 3 hours in a molten state. The mass ratio of nylon fiber to montmorillonite grafted with alkylamine is 3:1.

[0075] The alkylamine is octadecylamine.

[0076] In the preparation process of organosilicon-modified cotton fiber, in step C2, organosiloxane and tetraethyl orthosilicate are added to solution A, heated to 50°C and stirred for 40 minutes, cotton fiber is added, and stirred at constant temperature for 24 hours. The cotton fiber is taken out and placed in an oven, kept at 50°C for 20 minutes, and then the temperature is increased to 120°C and kept for 6 hours to obtain organosilicon-modified cotton fiber, the molar ratio of organosiloxane to tetraethyl orthosilicate is 2:1; the amount of cotton fiber in tetraethyl orthosilicate is 0.15 g / mL.

[0077] A method for weaving tear-resistant clothing fabrics comprises the following steps:

[0078] S1, twisting modified nylon fiber and polyester fiber, with every two strands of polyester fiber being matched with one strand of modified nylon fiber, a total of 12 fibers are twisted into yarn, which is used as warp yarn;

[0079] S2, twisting the modified PBO fiber and the organosilicon modified cotton fiber, wherein every two strands of organosilicon modified cotton fiber are matched with one strand of modified PBO fiber, and a total of 18 fibers are twisted into yarn, which is used as weft yarn;

[0080] S3. The warp yarn obtained in step S1 and the weft yarn obtained in step S2 are used for weaving, wherein the warp yarn density is 380 yarns / 10 cm, and the weft yarn density is 280 yarns / 10 cm, to obtain tear-resistant clothing fabric.

[0081] The rest is as per Example 1.

[0082] Comparative Example 1

[0083] In this comparative example, the PBO fiber is not modified, and the modified PBO fiber is replaced with PBO fiber, specifically:

[0084] A tear-resistant clothing fabric comprises the following raw materials in parts by weight: 65 parts of PBO fiber, 85 parts of modified nylon fiber, 110 parts of organosilicon-modified cotton fiber, and 105 parts of polyester fiber;

[0085] The preparation of the modified nylon fiber and the organosilicon-modified cotton fiber refers to the preparation process of the modified nylon fiber and the organosilicon-modified cotton fiber in Example 1.

[0086] In a method for weaving tear-resistant clothing fabrics, in step S2, PBO fibers and silicone-modified cotton fibers are twisted, and every two strands of silicone-modified cotton fibers are paired with one strand of PBO fiber, and a total of six fibers are twisted into yarns for use as weft yarns.

[0087] The rest of the process and preparation technology refer to Example 1.

[0088] Comparative Example 2

[0089] In this comparative example, the nylon fiber is not modified, and the modified nylon fiber is replaced with nylon fiber, specifically:

[0090] A tear-resistant clothing fabric, comprising the following raw materials in parts by weight: 65 parts of modified PBO fiber, 85 parts of nylon fiber, 110 parts of organosilicon-modified cotton fiber, and 105 parts of polyester fiber;

[0091] The preparation of the modified PBO fiber and the organosilicon-modified cotton fiber refers to the preparation process of the modified PBO fiber and the organosilicon-modified cotton fiber in Example 1.

[0092] In a method for weaving tear-resistant clothing fabrics, in step S1, nylon fibers and polyester fibers are twisted, with every two strands of polyester fibers being paired with one strand of nylon fiber, and a total of six fibers being twisted into yarns to be used as warp yarns.

[0093] The rest of the process and preparation technology refer to Example 1.

[0094] Comparative Example 3

[0095] In this comparative example, the cotton fiber is not modified, and the organosilicon-modified cotton fiber is replaced with cotton fiber, specifically:

[0096] A tear-resistant clothing fabric comprises the following raw materials in parts by weight: 65 parts of modified PBO fiber, 85 parts of modified nylon fiber, 110 parts of cotton fiber, and 105 parts of polyester fiber;

[0097] The preparation of the modified PBO fiber and the modified nylon fiber refers to the preparation process of the modified PBO fiber and the modified nylon fiber in Example 1.

[0098] In a method for weaving tear-resistant clothing fabrics, in step S2, modified PBO fibers and cotton fibers are twisted, with every two strands of cotton fibers being paired with one strand of modified PBO fibers, and a total of six fibers being twisted into yarns for use as weft yarns.

[0099] The rest of the process and preparation technology refer to Example 1.

[0100] Comparative Example 4

[0101] In this comparative example, PBO fiber, nylon fiber and cotton fiber are not modified, specifically:

[0102] A tear-resistant clothing fabric, comprising the following raw materials in parts by weight: 65 parts of PBO fiber, 85 parts of nylon fiber, 110 parts of cotton fiber, and 105 parts of polyester fiber;

[0103] In a weaving method for tear-resistant clothing fabrics, in step S1, nylon fibers and polyester fibers are twisted, and every two strands of polyester fibers are matched with one strand of nylon fibers, and a total of 6 fibers are twisted into yarns for use as warp yarns; in step S2, PBO fibers and cotton fibers are twisted, and every two strands of cotton fibers are matched with one strand of PBO fibers, and a total of 6 fibers are twisted into yarns for use as weft yarns.

[0104] The rest of the process and preparation technology refer to Example 1.

[0105] Related tests:

[0106] Tear resistance test: The fabrics prepared in Examples 1 to 3 and Comparative Examples 1 to 4 were tested according to GB / T3917-1:2009 “Tear properties of fabrics - Part 1 - Determination of tear strength by impact pendulum method”; the test results are shown in Table 1.

[0107] Table 1 Tear resistance test results

[0108]

[0109] It can be seen from the test results in Table 1 that the warp tear strength and weft tear strength of the fabrics prepared in the embodiments of the present invention are better than those prepared in the comparative examples, among which the warp tear strength and weft tear strength of the fabrics prepared in Example 1 are the best.

[0110] Abrasion resistance test: The prepared fabric was tested according to the abrasion resistance test method of GB / T 21196.2-2007. The test results are shown in Table 2.

[0111] Table 2 Wear resistance test results

[0112] Group Wear times / times Embodiment 1 4876 Embodiment 2 4772 Embodiment 3 4666 Comparative Example 1 3243 Comparative Example 2 3035 Comparative Example 3 3552 Comparative Example 4 2522

[0113] It can be seen from the test results in Table 2 that the wear resistance of the fabrics prepared in Examples 1 to 3 is better than that in Comparative Examples 1 to 4, among which the wear resistance of Example 1 is the best. This is because when the PBO fiber toughened and modified by epoxy resin is subjected to external force and friction, the epoxy resin coating coated on the outside of the PBO fiber can effectively reduce the friction between objects, thereby reducing wear and stress concentration; and the nylon fiber modified by montmorillonite, because montmorillonite is a lamellar structure, the lamellar layers can randomly translate and rotate when subjected to external force, effectively improving the wear resistance of the fiber; and the cotton fiber coated with silicone forms an inorganic network structure on the fiber surface, which can effectively reduce the damage to the cotton fiber during the friction process, thereby effectively improving the wear resistance.

[0114] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0115] Although the embodiments of the present application have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present application, and that the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A tear-resistant clothing fabric, characterized in that: The invention comprises the following raw materials in parts by weight: 60-80 parts of modified PBO fiber, 80-100 parts of modified nylon fiber, 100-150 parts of organosilicon modified cotton fiber, and 100-120 parts of polyester fiber; The modified PBO fiber is epoxy resin modified PBO fiber, the modified nylon fiber is alkylamine grafted montmorillonite modified nylon fiber, and the organosilicon modified cotton fiber is organosilicon coated cotton fiber.

2. The tear-resistant clothing fabric according to claim 1, characterized in that: The preparation method of the modified PBO fiber is: A1. Add pretreated PBO fiber to a mixture of methanesulfonic acid and hydrogen peroxide, raise the temperature to 60-80°C and react for 6-8 hours. During the reaction, add hydrogen peroxide solution to the mixture every 1-2 hours. After the reaction is completed, wash and dry to obtain acidified PBO fiber. A2. Add N,N-dimethylformamide, dicyclohexylcarbodiimide, melamine and acidified PBO fiber into the reactor, raise the temperature to 110-125° C. and react for 45-60 hours. After the reaction is completed, wash and dry to obtain aminated PBO fiber; A3. Add epoxy resin into the reactor, heat to 40-50°C, then add aminated PBO fiber and KOH, stir at constant temperature for 10-20 minutes, then raise the temperature to 60-70°C and stir for 8-12 hours. After the reaction is completed, take out the fiber, wash and dry it to obtain the modified PBO fiber.

3. The tear-resistant clothing fabric according to claim 2, characterized in that: In step A1, the pretreatment process of the PBO fiber is as follows: the PBO fiber is placed in a Soxhlet extractor, and after refluxing for 2 days at 120° C. using a mixture of petroleum ether and acetone, the fiber is taken out from the Soxhlet extractor, washed with deionized water, and then dried to obtain the pretreated PBO fiber.

4. The tear-resistant clothing fabric according to claim 1, characterized in that: The preparation method of the modified nylon fiber is: B1. Add montmorillonite to anhydrous ethanol, and add alkylamine thereto after ultrasonic dispersion for 2-4 hours, heat to 70-85° C. and stir to react for 4-6 hours. After the reaction is completed, wash and dry the product to obtain alkylamine-grafted montmorillonite; B2. Add nylon fiber into a reactor, heat it to a molten state, add montmorillonite grafted with alkylamine thereto, stir for 1-3 hours in a molten state, and spin to obtain the modified nylon fiber.

5. The tear-resistant clothing fabric according to claim 4, characterized in that: In step B1, the alkylamine is any one of dodecylamine, tetradecylamine, hexadecylamine and octadecylamine.

6. The tear-resistant clothing fabric according to claim 1, characterized in that: The preparation method of the organosilicon-modified cotton fiber is as follows: C1. Mix hydrochloric acid, isopropanol and deionized water to obtain solution A; C2. Add organosiloxane and ethyl orthosilicate to solution A, heat to 40-50°C and stir for 20-40 minutes, then add cotton fiber, stir at constant temperature for 18-24 hours, take out the cotton fiber and place it in an oven, keep it at 40-50°C for 10-20 minutes, then increase the temperature to 110-120°C and keep it for 4-6 hours to obtain organosilicon-modified cotton fiber.

7. The tear-resistant clothing fabric according to claim 6, characterized in that: The organosiloxane is methyltrimethoxysilane.

8. The method for weaving the tear-resistant clothing fabric according to any one of claims 1 to 7, comprising the following steps: S1, twisting modified nylon fiber and polyester fiber, with every two strands of polyester fiber being matched with one strand of modified nylon fiber, and a total of 6-12 fibers being twisted into yarn, which is used as warp yarn; S2, twisting the modified PBO fiber and the organosilicon modified cotton fiber, wherein every two strands of organosilicon modified cotton fiber are matched with one strand of modified PBO fiber, and a total of 6-18 fibers are twisted into yarn, which is used as weft yarn; S3. Weaving the warp yarn obtained in step S1 and the weft yarn obtained in step S2, wherein the warp yarn density is 360-380 yarns / 10 cm, and the weft yarn density is 240-280 yarns / 10 cm, to obtain the tear-resistant clothing fabric.

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