Wear-resistant nylon fabric and preparation method thereof

Abstract

The application relates to the technical field of fabrics, and discloses a wear-resistant chinlon fabric and a preparation method thereof. The wear-resistant fabric prepared by the application is composed of 25-35% polyester fibers, 15-35% modified chinlon fibers and 35-55% viscose fibers, and has excellent wear resistance, antistatic property and ultraviolet resistance; wherein the modified chinlon fiber is prepared by coating polypyrrole on the surface of chinlon fiber after grafting modification of the chinlon fiber by a reinforcing agent, so that the chinlon fiber is endowed with ultraviolet resistance and antistatic property.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of fabric, in particular to a wear-resistant nylon fabric and a preparation method thereof. BACKGROUND

[0002] Most of the fabrics on the market are blended fabrics, among which, the blended fabric using polyester fiber, nylon fiber and viscose fiber combines the excellent performance of the three fibers, such as: high strength, wear resistance and wrinkle resistance of polyester fiber, high elasticity, good wear resistance of nylon fiber, and moisture absorption, air permeability and softness of viscose fiber. This kind of blended fabric is often used in sports clothing, outdoor equipment, work clothes and other fields, which not only maintains wear resistance, but also improves the comfort of pure synthetic fibers. However, the blended fabric still has some shortcomings, such as the above-mentioned fiber blended fabric, the antistatic property and the ultraviolet resistance are relatively poor, easy to accumulate static electricity, and easy to age and yellow after ultraviolet irradiation.

[0003] The polyester and nylon in the blended fabric are hydrophobic fibers, which are easy to generate static electricity and difficult to dissipate when rubbed, while the viscose fiber is hygroscopic, but still cannot completely inhibit static electricity in low humidity environment. At present, the methods to improve the antistatic property of blended fabric mainly include: surface antistatic agent finishing, but it is only short-term effective, poor washing resistance and easy to fall off; or blending with conductive fibers (such as carbon fiber, metal fiber), but it affects the hand feeling of the fabric and the cost. In addition, the ultraviolet resistance of polyester, nylon and viscose fiber is poor, and the molecular chain of the blended fabric is easy to break after ultraviolet irradiation, resulting in a decrease in strength. Therefore, researchers should develop a blended fabric with long-lasting antistatic and ultraviolet protection while maintaining wear resistance in order to achieve more extensive application in outdoor, military and other fields. SUMMARY

[0004] In order to solve the above technical problems, the present application provides a wear-resistant nylon fabric and a preparation method thereof.

[0005] The object of the present application can be achieved by the following technical solutions:

[0006] A preparation method of a wear-resistant nylon fabric comprises the following steps:

[0007] Step S1, the nylon fiber is sequentially subjected to hydroxylation treatment and mercapto group treatment to obtain pretreated nylon fiber;

[0008] Step S2, the pretreated nylon fiber is soaked in a 0.1-0.2 mol / L aqueous solution of tris (2-carboxyethyl) phosphine hydrochloride for 1 h, then ultrasonically treated in a mixture of an enhancer solution and a photoinitiator 2959 for 30-50 min, and then irradiated under ultraviolet light for 3-5 h, and then washed with water and dried to obtain grafted nylon fiber.

[0009] Step S3, the grafted polyamide fiber is placed in water, pyrrole and 0.1 mol / L Fe 3+ aqueous solution are added, ultrasonic treatment is conducted at room temperature for 5-7 h, water washing and drying are conducted, the modified polyamide fiber is collected, the polyester fiber, the modified polyamide fiber and the viscose fiber are blended into a fabric, and the wear-resistant polyamide fabric is obtained;

[0010] Further, in step S2, the mass ratio of the pretreated polyamide fiber, the aqueous solution of tris (2-carboxyethyl) phosphine hydrochloride and the enhancer solution is 1:2:5;

[0011] Further, in step S2, the enhancer solution is prepared by mixing and stirring enhancer, ethanol and water in a ratio of 6-10 g:80 mL:20 mL;

[0012] Further, in step S2, the amount of the photoinitiator 2959 accounts for 0.005wt%-0.009wt% of the enhancer solution;

[0013] Further, in step S3, the amount ratio of the grafted polyamide fiber, water, pyrrole and Fe 3+ aqueous solution is 1-3 g:10 mL:0.1-0.3 g:1-2 mL;

[0014] Further, in step S3, the proportion of the polyester fiber is 25-35%, the proportion of the viscose fiber is 15-35%, and the proportion of the modified polyamide fiber is 35-55%.

[0015] Further, the enhancer is prepared by the following steps:

[0016] Step A1, acryloyl chloride is added into tetrahydrofuran (THF) and stirred uniformly under an ice water bath, which is denoted as solution 1; 5-chlorobenzotriazole is mixed in THF, triethylamine is added and stirred uniformly, and then transferred into solution 1, stirred in a 40℃ oil bath for 3.5-4.5 h, filtered, rotary evaporated, washed and dried, and an acryl- benzotriazole derivative is obtained;

[0017] Further, in step A1, the amount ratio of 5-chlorobenzotriazole, THF, triethylamine and solution 1 is 0.09-0.18 mol:100 mL:0.1-0.2 mol:100 mL;

[0018] Further, in step A1, the amount ratio of acryloyl chloride and THF in the solution 1 is 0.1-0.2 mol:100 mL;

[0019] Step A2, under the condition of nitrogen, mix the propenyl-benzotriazole derivative and ethanol, add anhydrous sodium carbonate and 4-chloro-1-butylamine, and heat to 80℃ to reflux for 4-5h, and distill under reduced pressure to obtain the chloro-benzotriazole derivative;

[0020] Further, in step A2, the amount ratio of the propenyl-benzotriazole derivative, ethanol, anhydrous sodium carbonate and 4-chloro-1-butylamine is 0.1-0.2mol:100mL:8-15g:0.11-0.22mol;

[0021] Step A3, mix the chloro-benzotriazole derivative and sodium hydroxide in DMF (N,N-dimethylformamide) and stir until uniform, add pyrrole, and react at 30-50℃ for 16-24h, spin, wash and dry to obtain the reinforcing agent;

[0022] Further, in step A3, the amount ratio of the chloro-benzotriazole derivative, sodium hydroxide, DMF and pyrrole is 2.78-8.34g:1.6-4.8g:100mL:1.7-5.1g.

[0023] In another aspect, the application also discloses the wear-resistant nylon fabric obtained by the preparation method.

[0024] The application has the following beneficial effects:

[0025] The wear-resistant fabric prepared by the application is a blend of polyester fiber, modified nylon fiber and viscose fiber, and has excellent wear resistance, anti-static property and ultraviolet resistance; wherein the modified nylon fiber is prepared by coating polypyrrole on the surface of the nylon fiber after grafting modification by the reinforcing agent, thereby endowing the nylon fiber with ultraviolet resistance and anti-static property.

[0026] The modified nylon fiber prepared by the application is first subjected to hydroxylation and mercapto treatment, so that the surface of the fiber is rich in mercapto groups, and the mercapto groups can react with the double bonds in the reinforcing agent, thereby grafting the reinforcing agent on the surface of the fiber; the pyrrole groups in the reinforcing agent and the subsequent pyrrole are used to carry out polymerization reaction, and the fiber surface is coated with polypyrrole; compared with the polypyrrole formed by directly coating the fiber with pyrrole, the coating method of the application uses chemical bonding, and the polypyrrole on the fiber surface is more firm, and the anti-static property and ultraviolet resistance of the fabric change little after multiple washing.

[0027] The prepared reinforcing agent is grafted on the surface of the fiber by chemical bonding, absorbs ultraviolet light by the contained benzotriazole structure, converts the ultraviolet light into harmless heat energy through intramolecular energy conversion, cooperates with the polyazole coated on the outer layer of the fiber to endow the fiber with ultraviolet resistance, the polyazole can reflect and absorb part of the ultraviolet light; the conductivity of the polyazole makes the static charge accumulated on the surface of the fiber conduct and disperse quickly, avoids local charge accumulation, significantly reduces the surface resistance of the fiber, prevents electrostatic adsorption of dust or discharge phenomenon, and improves the antistatic performance of the fabric. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the present application will be clearly and completely described below. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the present application.

[0029] The pre-treated nylon fibers used in the present application are prepared by the following steps:

[0030] 10g of polyamide is ultrasonically treated in 50mL of acetone for 30min, dried after washing, then 3mL of 85wt% phosphoric acid solution and 97mL of 85wt% formaldehyde solution are added, shaken uniformly, and reacted at 60℃ for 12-15h, washed, dried, and the hydroxylated nylon fibers are collected, 10g of the hydroxylated nylon fibers are mixed in 0.7mL of (3-mercapto propyl) trimethoxysilane and 100mL of isopropyl alcohol, nitrogen is introduced, and reacted at 70℃ for 12h, washed with water and dried to obtain the pre-treated nylon fibers.

[0031] The Fe 3+ The aqueous solution is prepared by dissolving FeCl3 crystals in concentrated hydrochloric acid and then diluting with water, wherein the Fe 3+ The pH of the aqueous solution is maintained at 1.5.

[0032] Example 1: The reinforcing agent is prepared by the following steps:

[0033] Step A1, 0.1mol of acryloyl chloride is added to 100mL of THF, stirred uniformly in an ice water bath, and recorded as solution 1; 0.09mol of 5-chlorobenzotriazole is mixed in 100mL of THF, 0.1mol of triethylamine is added and stirred uniformly, then transferred to 100mL of solution 1, stirred in a 40℃ oil bath for 3.5h, filtered, rotary evaporated, washed, and dried to obtain the propenyl-benzotriazole derivative;

[0034] Step A2, 0.1 mol of the propenyl-benzotriazole derivative and 100 mL of ethanol were mixed under nitrogen, 8 g of anhydrous sodium carbonate and 0.11 mol of 4-chloro-1-butylamine were added, and heated to 80°C to reflux for 4 h, and distilled under reduced pressure to obtain the chloro-benzotriazole derivative;

[0035] Step A3, 2.78 g of the chloro-benzotriazole derivative and 1.6 g of sodium hydroxide were mixed in 100 mL of DMF and stirred uniformly, 1.7 g of pyrrole was added, and reacted at 30°C for 16 h, and then rotary evaporated, washed, and dried to obtain the enhancer.

[0036] Example 2: The enhancer was prepared by the following steps:

[0037] Step A1, 0.15 mol of acryloyl chloride was added to 100 mL of THF and stirred uniformly under an ice water bath, and recorded as solution 2; 0.135 mol of 5-chlorobenzotriazole was mixed in 100 mL of THF, 0.15 mol of triethylamine was added and stirred uniformly, and then transferred to 100 mL of solution 2, and stirred in a 40°C oil bath for 4 h, and then filtered, rotary evaporated, washed, and dried to obtain the propenyl-benzotriazole derivative;

[0038] Step A2, 0.15 mol of the propenyl-benzotriazole derivative and 100 mL of ethanol were mixed under nitrogen, 12 g of anhydrous sodium carbonate and 0.16 mol of 4-chloro-1-butylamine were added, and heated to 80°C to reflux for 4.5 h, and distilled under reduced pressure to obtain the chloro-benzotriazole derivative;

[0039] Step A3, 5.56 g of the chloro-benzotriazole derivative and 3.2 g of sodium hydroxide were mixed in 100 mL of DMF and stirred uniformly, 3.4 g of pyrrole was added, and reacted at 40°C for 20 h, and then rotary evaporated, washed, and dried to obtain the enhancer.

[0040] Example 3: The enhancer was prepared by the following steps:

[0041] Step A1, 0.2 mol of acryloyl chloride was added to 100 mL of THF and stirred uniformly under an ice water bath, and recorded as solution 3; 0.18 mol of 5-chlorobenzotriazole was mixed in 100 mL of THF, 0.2 mol of triethylamine was added and stirred uniformly, and then transferred to 100 mL of solution 3, and stirred in a 40°C oil bath for 4.5 h, and then filtered, rotary evaporated, washed, and dried to obtain the propenyl-benzotriazole derivative;

[0042] Step A2, 0.2 mol propenyl-benzotriazole derivative and 100 mL ethanol were mixed under nitrogen, 15 g anhydrous sodium carbonate and 0.22 mol 4-chloro-1-butylamine were added, and heated to 80°C to reflux for 5 h, and distilled under reduced pressure to obtain the chloro-benzotriazole derivative;

[0043] Step A3, 8.34 g chloro-benzotriazole derivative and 4.8 g sodium hydroxide were mixed and stirred in 100 mL DMF, 5.1 g pyrrole was added, and reacted at 50°C for 24 h, and then rotary evaporated, washed and dried to obtain the enhancer.

[0044] Example 4: A method for preparing a wear-resistant nylon fabric includes the following steps:

[0045] Step S1, the nylon fiber was sequentially subjected to hydroxylation treatment and mercapto treatment to obtain a pretreated nylon fiber;

[0046] Step S2, 10 g of the pretreated nylon fiber was immersed in 20 g of a 0.1 mol / L aqueous solution of tris(2-carboxyethyl)phosphine hydrochloride for 1 h, then ultrasonically treated in a mixture of 50 g of the enhancer solution and a photoinitiator 2959 (0.005 wt% of the enhancer solution) for 30 min, and then irradiated under ultraviolet light for 3 h, and then washed with water and dried to obtain a grafted nylon fiber, wherein the enhancer solution was prepared by mixing and stirring 6 g of the enhancer prepared in Example 1, 80 mL of ethanol and 20 mL of water in a ratio of 6:80:20;

[0047] Step S3, 1 g of the grafted nylon fiber was placed in 10 mL of water, 0.1 g of pyrrole and 1 mL of 0.1 mol / L Fe 3+ aqueous solution were added, and ultrasonically treated at room temperature for 5 h, and then washed with water and dried to obtain modified nylon fiber, and then polyester fiber, modified nylon fiber and viscose fiber were blended to form a fabric to obtain a wear-resistant nylon fabric, wherein the proportion of polyester fiber was 35%, the proportion of viscose fiber was 30%, and the proportion of modified nylon fiber was 35%.

[0048] Example 5: A method for preparing a wear-resistant nylon fabric includes the following steps:

[0049] Step S1, the nylon fiber was sequentially subjected to hydroxylation treatment and mercapto treatment to obtain a pretreated nylon fiber;

[0050] Step S2, soaking 10 g of the pre-treated nylon fiber in 20 g of a 0.15 mol / L aqueous solution of tris(2-carboxyethyl)phosphine hydrochloride for 1 hour, removing the fiber and placing it in a mixture of 50 g of a reinforcing agent solution and a photoinitiator 2959 (accounting for 0.007 wt % of the reinforcing agent solution) and ultrasonically treating the fiber for 40 minutes. After removing the fiber and irradiating the fiber under ultraviolet light for 4 hours, the fiber was washed with water and dried to obtain a grafted nylon fiber, wherein the reinforcing agent solution was prepared by mixing and stirring the reinforcing agent prepared in Example 2, ethanol, and water in a ratio of 8 g:80 mL:20 mL.

[0051] Step S3: 2 g of grafted nylon fiber was placed in 10 mL of water, and 0.2 g of pyrrole and 1.5 mL of 0.1 mol / L Fe 3+ The aqueous solution was ultrasonically treated at room temperature for 6 hours, washed with water, and dried, and the modified nylon fiber was collected. The polyester fiber, modified nylon fiber and viscose fiber were then blended into a fabric to obtain a wear-resistant nylon fabric, wherein the proportion of polyester fiber was 30%, the proportion of viscose fiber was 25%, and the proportion of modified nylon fiber was 45%.

[0052] Example 6: A method for preparing a wear-resistant nylon fabric comprises the following steps:

[0053] Step S1, sequentially subjecting nylon fiber to hydroxylation treatment and thiol treatment to obtain pre-treated nylon fiber;

[0054] Step S2, soaking 10 g of the pre-treated nylon fiber in 20 g of a 0.2 mol / L aqueous solution of tris(2-carboxyethyl)phosphine hydrochloride for 1 hour, removing the fiber and placing it in a mixture of 50 g of a reinforcing agent solution and a photoinitiator 2959 (accounting for 0.009 wt % of the reinforcing agent solution) for ultrasonic treatment for 50 minutes, removing the fiber and irradiating it under ultraviolet light for 3-5 hours, washing it with water, and drying it to obtain the grafted nylon fiber, wherein the reinforcing agent solution is prepared by mixing and stirring the reinforcing agent prepared in Example 3, ethanol, and water in a ratio of 10 g:80 mL:20 mL;

[0055] Step S3: 3 g of grafted nylon fiber was placed in 10 mL of water, and 0.3 g of pyrrole and 2 mL of 0.1 mol / L Fe 3+ The aqueous solution was ultrasonically treated at room temperature for 7 hours, washed with water, and dried, and the modified nylon fiber was collected. The polyester fiber, modified nylon fiber and viscose fiber were then blended into a fabric to obtain a wear-resistant nylon fabric, wherein the proportion of polyester fiber was 30%, the proportion of viscose fiber was 15%, and the proportion of modified nylon fiber was 55%.

[0056] Comparative Example 1: This comparative example is a nylon fabric, which is prepared by the following steps: 30% polyester fiber, 55% nylon fiber and 15% viscose fiber are blended into a fabric to obtain the nylon fabric.

[0057] Comparative Example 2: This comparative example is a nylon fabric, which is different from Example 6 in that the nylon fibers are not coated with polypyrrole, and only 30% polyester fibers, 55% grafted nylon fibers prepared in Example 6 and 15% viscose fibers are blended to form a fabric, i.e. the nylon fabric is obtained, and the rest is the same.

[0058] Comparative Example 3: This comparative example is a nylon fabric, which is different from Example 6 in that the modified nylon fibers are prepared by coating polypyrrole on hydroxylated nylon fibers, and the modified nylon fibers are prepared by the following steps: 3 g of hydroxylated nylon fibers are placed in 10 mL of water, 0.3 g of pyrrole and 2 mL of 0.1 mol / L Fe 3+ solution are added, and ultrasonic treatment is carried out at room temperature for 7 h, and then the modified nylon fibers are collected after washing and drying. Then 30% polyester fibers, 55% modified nylon fibers and 15% viscose fibers are blended to form a fabric, i.e. the nylon fabric is obtained.

[0059] The nylon fabrics prepared in Examples 4-6 and Comparative Examples 1-3 are tested for performance:

[0060] Abrasion resistance test: The abrasion resistance of the fabric is tested by using a Martindale abrasion tester with a friction load of 797±7 g according to the standard of GB / T 21196.2-2007, and the test is continued until the sample is abraded;

[0061] Antistatic property test: The resistivity of a 10 cm x 10 cm sample is tested after washing for 50 times according to GB / T 12703 "Evaluation of the static property of textiles";

[0062] Ultraviolet resistance test: The ultraviolet protection factor of the fabric is tested according to GB / T 18830-2009 "Evaluation of the ultraviolet resistance of textiles", and the ultraviolet protection factor of the fabric is tested again after washing the fabric for 25 times;

[0063] The test results are shown in Table 1:

[0064] Table 1: Performance test results

[0065]

[0066] As can be seen from Table 1, the nylon fabric prepared in the present application has an abrasion resistance of >13,000 times after abrasion resistance test, indicating that the fabric has excellent abrasion resistance; the resistivity is in the range of (4.6 x 10 7 -4.5 x 10 8 ) Ω after resistivity test, indicating that the fabric has excellent antistatic property; the ultraviolet protection factor is in the range of 51-57 after ultraviolet resistance test, indicating that the fabric has excellent ultraviolet resistance.

[0067] The above merely illustrates and explains the concept of the present application. Those skilled in the art can make various modifications or supplements to the described specific embodiments or replace them with similar ways without departing from the scope defined by the concept of the present application, and all of them shall fall within the protection scope of the present application.

Claims

1. A method for preparing wear-resistant nylon fabric, characterized in that: The following steps are involved: Step S1, sequentially subjecting nylon fiber to hydroxylation treatment and thiol treatment to obtain pre-treated nylon fiber; Step S2, soaking the pretreated nylon fiber in a 0.1-0.2 mol / L aqueous solution of tris(2-carboxyethyl)phosphine hydrochloride for 1 hour, removing the fiber and placing it in a mixture of a reinforcing agent solution and a photoinitiator 2959 for ultrasonic treatment for 30-50 minutes, removing the fiber and irradiating it under ultraviolet light for 3-5 hours, washing it with water, and drying it to obtain the grafted nylon fiber, wherein the reinforcing agent solution is prepared by mixing and stirring the reinforcing agent, ethanol, and water in a ratio of 6-10 g:80 mL:20 mL; Step S3: placing the grafted nylon fiber in water, adding pyrrole and 0.1 mol / L Fe 3+ aqueous solution, ultrasonically treated at room temperature for 5-7h, washed with water, dried, and the modified nylon fiber was collected. The polyester fiber, modified nylon fiber and viscose fiber were then blended into a fabric to obtain a wear-resistant nylon fabric; The enhancer is prepared by the following steps: Step A1: Add acryloyl chloride to tetrahydrofuran and stir evenly in an ice-water bath, which is referred to as Solution 1. Mix 5-chlorobenzotriazole in THF, add triethylamine and stir evenly, then transfer the mixture to Solution 1. Stir and react in a 40°C oil bath for 3.5-4.5 hours, filter, rotary evaporate, wash, and dry to obtain a propenyl-benzotriazole derivative. Step A2: Under nitrogen, mix the propenyl-benzotriazole derivative and ethanol, add anhydrous sodium carbonate and 4-chloro-1-butylamine, heat to 80°C, reflux for 4-5 hours, and distill under reduced pressure to obtain the chloro-benzotriazole derivative; Step A3: Mix a chloro-benzotriazole derivative and sodium hydroxide in DMF and stir evenly, add pyrrole, react at 30-50° C. for 16-24 h, rotary evaporate, wash, and dry to obtain an enhancer.

2. The method for preparing a wear-resistant nylon fabric according to claim 1, characterized in that: In step S2, the mass ratio of the pre-treated nylon fiber, the tri(2-carboxyethyl)phosphine hydrochloride aqueous solution, and the enhancer solution is 1:2:5, and the amount of the photoinitiator 2959 used accounts for 0.005wt%-0.009wt% of the enhancer solution.

3. The method for preparing a wear-resistant nylon fabric according to claim 1, characterized in that: In step S3, nylon fiber, water, pyrrole and Fe are grafted 3+ The dosage ratio of the aqueous solution is 1-3g:10mL:0.1-0.3g:1-2mL, the proportion of polyester fiber is 25-35%, the proportion of viscose fiber is 15-35%, and the proportion of modified nylon fiber is 35-55%.

4. The method for preparing a wear-resistant nylon fabric according to claim 1, characterized in that: In step A1, the usage ratio of 5-chlorobenzotriazole, THF, triethylamine and solution 1 is 0.09-0.18 mol:100 mL:0.1-0.2 mol:100 mL.

5. The method for preparing a wear-resistant nylon fabric according to claim 1, characterized in that: The ratio of acryloyl chloride to THF in the solution 1 of step A1 is 0.1-0.2 mol:100 mL.

6. The method for preparing a wear-resistant nylon fabric according to claim 1, characterized in that: In step A2, the usage ratio of the propenyl-benzotriazole derivative, ethanol, anhydrous sodium carbonate and 4-chloro-1-butylamine is 0.1-0.2 mol:100 mL:8-15 g:0.11-0.22 mol.

7. The method for preparing a wear-resistant nylon fabric according to claim 1, characterized in that: In step A3, the ratio of the amount of chloro-benzotriazole derivative, sodium hydroxide, DMF and pyrrole is 2.78-8.34 g:1.6-4.8 g:100 mL:1.7-5.1 g.

8. A wear-resistant nylon fabric, characterized in that: The wear-resistant nylon fabric is prepared according to the method according to any one of claims 1-7.

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