High-strength chinlon fabric and processing method thereof

Abstract

The invention relates to the technical field of chinlon fabrics, in particular to a high-strength chinlon fabric and a processing method thereof. The processing method of the high-strength chinlon fabric comprises the following steps: immersing a chinlon fabric matrix in a finishing agent for immersion treatment, drying, curing and cooling. The preparation method of the finishing agent comprises the following steps: firstly, reacting an amino-terminated polymer with a polycarboxylic acid compound to obtain a carboxyl-terminated modified polymer, and then assembling the carboxyl-terminated modified polymer and the amino-terminated polymer to obtain the finishing agent. The finishing agent obtained by the method has strong binding capacity with the chinlon fabric, and has good hydrophilicity, antistatic property and antistatic durability. In addition, allyl polyether is further introduced into the amino-terminated polymer, so that the hydrophilicity, the antistatic property and the antistatic durability of the finishing agent are further improved.

Description

Technical Field

[0001] The present application relates to the technical field of nylon fabrics, and in particular to a high-strength nylon fabric and a processing method thereof. Background Art

[0002] Nylon fiber, one of the primary fibers in textile fabrics, possesses excellent mechanical properties, abrasion resistance, and wrinkle resistance, making it particularly widely used in outdoor clothing, industrial filtration media, and safety equipment. However, as living standards improve, the demand for fabric comfort increases, and nylon fabrics are increasingly attracting attention for their issues. First, due to the lack of hydrophilic groups in nylon fiber molecules, their surface resistance is high, making them prone to static charge accumulation in dry environments. This can cause severe static electricity and reduce wearing comfort. Nylon fiber also easily attracts dust, making it problematic for sensitive environments such as electronic equipment when used as protective clothing.

[0003] To improve the antistatic properties of nylon fabrics, commonly used methods include chemical grafting, blending, and printing and dyeing. Chemical grafting involves modifying nylon fibers, such as introducing conductive or hydrophilic groups into the nylon fiber molecular chain. This method can enhance the conductivity of the nylon fiber itself, fundamentally improving the problem of permanent antistatic properties. However, it also has the disadvantages of a complex process, high cost, and the potential for a decrease in the softness and mechanical properties of the nylon fiber.

[0004] The blending method is to weave nylon fiber together with other antistatic fibers (such as metal fiber, carbon fiber, silver-plated fiber, etc.) to form a composite fiber. The patent application document with publication number CN114737271A discloses a method for processing antistatic nylon fabrics, including the following steps: nylon chips, triallyl isocyanurate, and functional nanoparticles are blended and granulated in a twin-screw extruder to obtain a first masterbatch; graphene, nylon chips, and an oiliness agent are mixed and melt-granulated to obtain a second masterbatch; the first masterbatch and the second masterbatch are melt-spinned to obtain graphene nylon fiber; bamboo pulp fiber is soaked in an immersion liquid for 3-4 hours to obtain modified bamboo pulp fiber; the graphene nylon fiber and the modified bamboo pulp fiber are twisted into yarn, and finally the yarn is warp-knitted to obtain antistatic nylon fabric. This method can improve the antistatic durability of nylon fabric, but this method cannot overcome the defects of the above-mentioned chemical grafting method. Therefore, when nylon fiber is used as a civilian fabric material, the chemical grafting method and the blending method are not the best methods.

[0005] The dyeing and printing finishing method involves applying a finishing agent to nylon fabric by immersion or padding, forming a hydrophilic antistatic film on the surface of the nylon fabric, thereby improving the antistatic properties of the nylon fabric. This method is commonly used in the textile industry. However, due to the weak bonding between the finishing agent and the nylon fabric, this method may destroy the antistatic film on the surface of the nylon fabric after repeated washing, causing a large loss of the finishing agent's active ingredients, significantly increasing the antistatic half-life of the nylon fabric, and gradually weakening the antistatic effect until it completely disappears. Therefore, how to achieve a long-lasting antistatic effect without affecting the softness and mechanical properties of nylon fabric is a key research focus in the textile dyeing and printing industry. Summary of the Invention

[0006] In order to improve the permanent antistatic performance of high-strength nylon fabric, the present application provides a high-strength nylon fabric and a processing method thereof.

[0007] A method for processing high-strength nylon fabrics comprises the following steps: immersing a nylon fabric substrate in a finishing agent for impregnation treatment, taking it out, drying, curing, and cooling it;

[0008] The preparation method of the finishing agent comprises the following steps:

[0009] S1: reacting a polycarboxylic acid compound with an amino-terminated polymer to obtain a carboxyl-terminated modified polymer;

[0010] S2: dissolving the terminal carboxyl modified polymer and the terminal amino polymer in an organic solvent for assembly.

[0011] In the above technical solution, during the preparation process of the finishing agent, the terminal amino polymer is first modified to obtain a modified polymer containing a carboxyl group. In an organic solvent, the terminal carboxyl modified polymer carries a negative charge and can be used as a polyanion system, and the terminal amino polymer carries a positive charge and can be used as a polycation system. The negative charge of the carboxyl group and the positive charge of the amino group attract, agglomerate, rearrange, and assemble each other under the action of electrostatics and hydrogen bonds, thereby forming a macromolecular aggregate with special functions. The macromolecular aggregate has good hydrophilicity and can absorb moisture in the air, providing an ionization site for nylon fabrics, reducing the generation of static charge, allowing the static charge generated by friction to be transferred and released, accelerating the leakage of static charge, and effectively transferring it without aggregation and discharge, thereby making the surface of the nylon fabric have a higher conductivity.

[0012] In addition, the amino-terminated polymer and the carboxyl-terminated modified polymer have good hydrogen bonding with the groups on the surface of the nylon fabric, which can improve the bonding strength between the finishing agent and the nylon fabric, so that the nylon fabric still has good antistatic properties after multiple washings.

[0013] Preferably, in step S1, the molar ratio of the carboxyl group in the polycarboxylic acid compound to the amino group in the amino-terminated polymer is 1:(0.8-0.95).

[0014] In order to improve the yield of the carboxyl-terminated polymer by adopting the above technical solution, the carboxyl group in the polyacid compound should be added in a slightly excess amount compared to the amino group in the amino-terminated polymer.

[0015] In some specific embodiments, in step S1, the molar ratio of the carboxyl group in the polycarboxylic acid compound to the amino group in the amino-terminated polymer can be 1:0.8, 1:0.82, 1:0.85, 1:0.88, 1:0.9, 1:0.92, or 1:0.95. Generally, in step S1, when the molar ratio of the carboxyl group in the polycarboxylic acid compound to the amino group in the amino-terminated polymer is 1:0.9, better experimental results can be obtained.

[0016] Preferably, in step S1, the polycarboxylic acid compound is a dicarboxylic acid or a dicarboxylic anhydride;

[0017] And / or, the amino-terminated polymer is a polyetheramine.

[0018] In some specific embodiments, in step S1, the polycarboxylic acid compound can be adipic acid, azelaic acid, sebacic acid, citric acid, butanetetracarboxylic acid, maleic anhydride, succinic anhydride, or glutaric anhydride.

[0019] In some specific embodiments, in step S1, the amino-terminated polymer is polyetheramine, and the number average molecular weight of the polyetheramine can be 1000, 1200, 1500, 1800, 2000, 2200, 2400, 2500, 2800, 3000, 3500, or 4000. Generally, when the number average molecular weight of the polyetheramine is 3000, better experimental results can be obtained.

[0020] Preferably, in step S2, the mass ratio of the carboxyl-terminated polymer to the amino-terminated polymer is 1:(0.8-1.2).

[0021] In some specific embodiments, in step S2, the mass ratio of the terminal carboxyl modified polymer to the terminal amino polymer can be 1:0.8, 1:0.85, 1:0.9, 1:0.95, 1:1, 1:1.05, 1:1.1, 1:1.15, or 1:1.2. Generally, in step S2, when the mass ratio of the terminal carboxyl modified polymer to the terminal amino polymer is 1:0.95, better experimental results can be obtained.

[0022] Further preferably, in step S1, the preparation method of the amino-terminated polymer is as follows:

[0023] The cyclic siloxane is heated to 90-120°C, a ring-opening catalyst is added, a polymerization reaction is carried out, and then an amino end-capping agent is added and the reaction is continued to obtain the product.

[0024] In the above technical solution, the cyclic siloxane is first heated to a certain temperature, and a ring-opening polymerization reaction is carried out under the action of a ring-opening catalyst. Then, an amino end-capping agent is added, and the reaction is carried out under certain conditions to obtain an amino-terminated polysiloxane. The amino-terminated polysiloxane obtained by the above preparation method has good stability and basically does not exhibit the "skinning" phenomenon.

[0025] Moreover, amino-terminated polysiloxane has low surface energy and flexibility, and can be easily adsorbed on the surface of nylon fabric or enter the interior of nylon fabric, thereby increasing the bonding strength between the finishing agent and nylon fiber, thereby improving the durability of the antistatic effect of nylon fabric.

[0026] In addition, the amino-terminated polysiloxane molecular chain has good flexibility and film-forming properties. When coated on the surface of nylon fiber, it can significantly reduce the roughness of the fiber surface, making the finished nylon fabric more refreshing, smooth and elastic, thereby improving the comfort of the nylon fabric.

[0027] Preferably, the cyclic siloxane is one or more of hexamethylcyclotrisiloxane, octamethylcyclotetrasiloxane, decamethylcyclopentasiloxane and dodecamethylcyclohexasiloxane;

[0028] and / or, the amino end-capping agent is one of 1,3-bis(aminopropyl)tetramethyldisiloxane, γ-aminopropyltriethoxysilane, N-(β-aminoethyl)-γ-aminopropyltrimethoxysilane and N-β-(aminoethyl)-γ-aminopropylmethyldimethoxysilane;

[0029] And / or, the mass ratio of the cyclic siloxane to the amino end-capping agent is 1:(1-2).

[0030] In some specific embodiments, the cyclic siloxane is one or more of hexamethylcyclotrisiloxane, octamethylcyclotetrasiloxane, decamethylcyclopentasiloxane and dodecamethylcyclohexasiloxane; the amino end-capping agent is one of 1,3-bis(aminopropyl)tetramethyldisiloxane, γ-aminopropyltriethoxysilane, N-(β-aminoethyl)-γ-aminopropyltrimethoxysilane and N-β-(aminoethyl)-γ-aminopropylmethyldimethoxysilane. Generally, when the cyclic siloxane is octamethylcyclotetrasiloxane and the amino end-capping agent is 1,3-bis(aminopropyl)tetramethyldisiloxane, better experimental results can be obtained.

[0031] In some specific embodiments, the mass ratio of the cyclic siloxane to the amino end-capping agent can be 1:1, 1:1.2, 1:1.4, 1:1.5, 1:1.6, 1:1.8, or 1:2. Generally, when the mass ratio of the cyclic siloxane to the amino end-capping agent is 1:1.2, better experimental results can be obtained.

[0032] More preferably, the cyclic siloxane is prepared by a hydrosilylation reaction of 1,3,5,7-tetramethylcyclotetrasiloxane and allyl polyether in the presence of a catalyst.

[0033] In the above technical solution, 1,3,5,7-tetramethylcyclotetrasiloxane contains Si-H bonds, which can undergo a hydrosilylation addition reaction with allyl polyether. Allyl polyether is introduced into 1,3,5,7-tetramethylcyclotetrasiloxane. Allyl polyether contains more ether bonds and has better hydrophilicity, which can improve the hydrophilicity of nylon fabric, thereby improving the antistatic performance of nylon fabric. Moreover, allyl polyether, as a side chain, can easily form hydrogen bonds with amino groups, carboxyl groups, etc. on the surface of nylon fibers, thereby improving the bonding strength with nylon fabric. After multiple washings, it can still maintain a strong antistatic effect.

[0034] More preferably, the molar ratio of the 1,3,5,7-tetramethylcyclotetrasiloxane to the allyl polyether is 1:(4-4.5).

[0035] Using the above technical solution, the Si-H bond content in 1,3,5,7-tetramethylcyclotetrasiloxane is relatively high. If the Si-H bonds are not completely consumed during the hydrosilylation addition reaction with allyl polyether, then in subsequent processes, the Si-H bonds will easily react with carboxyl groups, thereby increasing the viscosity of the finishing agent, which is not conducive to the finishing of nylon fabrics. It will also affect the formation of macromolecular aggregates between the amino-terminated polymer and the carboxyl-terminated modified polymer, thereby affecting the antistatic properties of the nylon fabric. Therefore, in order to increase the consumption rate of the Si-H bonds in 1,3,5,7-tetramethylcyclotetrasiloxane, the molar ratio of 1,3,5,7-tetramethylcyclotetrasiloxane to allyl polyether must be controlled within a certain range.

[0036] In some specific embodiments, the molar ratio of the 1,3,5,7-tetramethylcyclotetrasiloxane to the allyl polyether can be 1:4, 1:4.1, 1:4.2, 1:4.3, 1:4.4, or 1:4.5. Generally, when the molar ratio of the 1,3,5,7-tetramethylcyclotetrasiloxane to the allyl polyether is 1:4.2, better experimental results can be obtained.

[0037] More preferably, the temperature of the hydrosilylation reaction is 80-100°C.

[0038] In the above technical solution, the hydrosilylation reaction of 1,3,5,7-tetramethylcyclotetrasiloxane and allyl polyether is an exothermic reaction, which releases a large amount of heat during the reaction. In addition, 1,3,5,7-tetramethylcyclotetrasiloxane has a high Si-H bond content and a high reaction rate. If the reaction temperature is too high, the hydrosilylation reaction will be too intense, which may cause implosion, release a large amount of heat, cause the reaction to run away, and even cause a safety accident. If the reaction temperature is too low, the hydrosilylation reaction rate is low, which may result in incomplete reaction or no reaction. Therefore, the temperature of the hydrosilylation reaction must be controlled within a certain range.

[0039] In some specific embodiments, the temperature of the hydrosilylation reaction can be 80°C, 82°C, 84°C, 86°C, 88°C, 90°C, 92°C, 94°C, 96°C, 98°C, or 100°C. Generally, better experimental results can be obtained when the temperature of the hydrosilylation reaction is 90°C.

[0040] A high-strength nylon fabric is produced by adopting the processing method.

[0041] The nylon fabric obtained by the above processing method has good hydrophilicity and strong bonding with the nylon fabric body, so it has good antistatic performance and antistatic durability; and the nylon fabric introduces chain segments with good flexibility, so it has good coolness, smoothness, elasticity and other properties.

[0042] The above technical solution of the present application has at least the following beneficial effects:

[0043] 1. This application utilizes the electrostatic interaction and hydrogen bonding between the amino-terminated polymer and the carboxyl-terminated modified polymer to construct macromolecular aggregates, which can improve the hydrophilicity, antistatic performance and antistatic durability of the finishing agent;

[0044] 2. By introducing polysiloxane into the finishing agent, the present application can not only improve the antistatic performance and antistatic durability of the finishing agent, but also improve the coolness, smoothness, elasticity and other properties of nylon fabrics;

[0045] 3. This application introduces allyl polyether chain segments into the finishing agent through a hydrosilylation addition reaction, thereby further improving the hydrophilicity, antistatic performance and antistatic durability of the finishing agent. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] Figure 1 It is the surface resistivity and surface resistivity change rate of high-strength nylon fabric. DETAILED DESCRIPTION

[0047] The present application is further described in detail below with reference to the embodiments.

[0048] Unless otherwise specified, the raw materials used in the examples and comparative examples of the present application are all commercially available.

[0049] Example 1

[0050] The processing method of the high-strength nylon fabric of this embodiment includes the following steps:

[0051] Immerse the nylon fabric substrate in the finishing agent for 10 seconds, take it out, bake it at 80℃ for 10 minutes, then cure it at 160℃ for 2 minutes, and finally cool it at room temperature.

[0052] The preparation method of the finishing agent comprises the following steps:

[0053] S1: In a three-necked flask equipped with a stirrer, a thermometer, and a reflux condenser, 30 g of polyetheramine (number average molecular weight 3000) and 1.2 g of adipic acid were added, the temperature was raised to 65°C, and the reaction was carried out for 2 h. After the reaction was completed, the mixture was cooled to room temperature, and the product was washed to remove impurities to obtain a carboxyl-terminated polymer;

[0054] S2: Weigh 10g of polyetheramine and 8g of end-carboxyl modified polymer respectively, dissolve them in ethyl acetate to prepare a dilute solution with a mass fraction of 0.05%, stir and mix the two dilute solutions evenly, and let them stand for 10 minutes.

[0055] Example 2

[0056] The processing method of the high-strength nylon fabric of this embodiment includes the following steps:

[0057] Immerse the nylon fabric substrate in the finishing agent for 10 seconds, take it out, bake it at 100℃ for 5 minutes, then cure it at 175℃ for 1 minute, and finally cool it at room temperature.

[0058] The preparation method of the finishing agent comprises the following steps:

[0059] S1: In a three-necked flask equipped with a stirrer, a thermometer, and a reflux condenser, 30 g of amino-terminated polydimethylsiloxane (number average molecular weight 3000) and 0.93 g of maleic anhydride were added, the temperature was raised to 75°C, and the reaction was carried out for 1.5 h. After the reaction was completed, the reaction was cooled to room temperature, and the product was washed to remove impurities to obtain a carboxyl-terminated modified polymer;

[0060] S2: Weigh 10 g of amino-terminated polydimethylsiloxane and 12 g of carboxyl-terminated modified polymer respectively, dissolve them in ethyl acetate to prepare a dilute solution with a mass fraction of 0.05%. Stir the two dilute solutions to mix them evenly and let them stand for 10 minutes.

[0061] Example 3

[0062] The processing method of the high-strength nylon fabric of this embodiment includes the following steps:

[0063] Immerse the nylon fabric substrate in the finishing agent for 10 seconds, take it out, bake it at 90℃ for 5 minutes, then cure it at 170℃ for 1 minute, and finally cool it at room temperature.

[0064] The preparation method of the finishing agent comprises the following steps:

[0065] S1: In a three-necked flask equipped with a stirrer, a thermometer, and a reflux condenser, 30 g of amino-terminated polydimethylsiloxane (number average molecular weight 3000) and 1.15 g of citric acid were added, the temperature was raised to 70°C, and the reaction was carried out for 2 h. After the reaction was completed, the reaction was cooled to room temperature, and the product was washed to remove impurities to obtain a carboxyl-terminated modified polymer;

[0066] S2: Weigh 10 g of amino-terminated polydimethylsiloxane and 9.5 g of carboxyl-terminated modified polymer respectively, dissolve them in ethyl acetate to prepare a dilute solution with a mass fraction of 0.05%. Stir the two dilute solutions to mix them evenly and let them stand for 10 minutes.

[0067] Example 4

[0068] The processing method of the high-strength nylon fabric of this embodiment includes the following steps:

[0069] Immerse the nylon fabric substrate in the finishing agent for 10 seconds, take it out, bake it at 90℃ for 5 minutes, then cure it at 170℃ for 1 minute, and finally cool it at room temperature.

[0070] The preparation method of the finishing agent comprises the following steps:

[0071] S1: In a three-necked flask equipped with a stirrer, a thermometer, and a reflux condenser, 24.5 g of an amino-terminated polymer (number average molecular weight of 2450) and 1.15 g of citric acid were added, the temperature was raised to 70°C, and the reaction was carried out for 2 h. After the reaction was completed, the reaction was cooled to room temperature, and the product was washed to remove impurities to obtain a carboxyl-terminated polymer;

[0072] S2: Weigh 10g of amino-terminated polydimethylsiloxane and 9.5g of carboxyl-terminated modified polymer respectively, dissolve them in ethyl acetate to prepare a dilute solution with a mass fraction of 0.05%. Stir the two dilute solutions to mix them evenly and let them stand for 10 minutes.

[0073] The preparation method of the amino-terminated polymer in this embodiment is as follows:

[0074] In a three-necked flask equipped with a stirrer, a thermometer, and a reflux condenser, add 10 g of octamethylcyclotetrasiloxane, raise the temperature to 90°C, add 0.1 g of tetramethylammonium hydroxide, and carry out ring-opening polymerization for 5 minutes. Add 15 g of γ-aminopropyltriethoxysilane, and continue the reaction for 6 hours. Then, reduce the pressure and evacuate the air. After sealing at room temperature for 24 hours, bake at 150°C for 2 hours, and cool to room temperature.

[0075] Example 5

[0076] The processing method of the high-strength nylon fabric of this embodiment includes the following steps:

[0077] Immerse the nylon fabric substrate in the finishing agent for 10 seconds, take it out, bake it at 90℃ for 5 minutes, then cure it at 170℃ for 1 minute, and finally cool it at room temperature.

[0078] The preparation method of the finishing agent comprises the following steps:

[0079] S1: In a three-necked flask equipped with a stirrer, a thermometer, and a reflux condenser, 32.4 g of an amino-terminated polymer (number average molecular weight of 3214) and 1.15 g of citric acid were added, the temperature was raised to 70°C, and the reaction was carried out for 2 h. After the reaction was completed, the reaction was cooled to room temperature, and the product was washed to remove impurities to obtain a carboxyl-terminated polymer;

[0080] S2: Weigh 10g of amino-terminated polydimethylsiloxane and 9.5g of carboxyl-terminated modified polymer respectively, dissolve them in ethyl acetate to prepare a dilute solution with a mass fraction of 0.05%. Stir the two dilute solutions to mix them evenly and let them stand for 10 minutes.

[0081] The preparation method of the amino-terminated polymer in this embodiment is as follows:

[0082] 1) Weigh 2.45 g of 1,3,5,7-tetramethylcyclotetrasiloxane and 24 g of allyl polyoxyethylene polyoxypropylene ether (number average molecular weight of 600) in a three-necked flask, heat to 90° C. with stirring, add 0.2 g of chloroplatinic acid, and react at this temperature for 4 hours. Then, remove low-boiling substances under reduced pressure to obtain an intermediate;

[0083] 2) In a three-necked flask equipped with a stirrer, a thermometer, and a reflux condenser, add 10 g of the intermediate, raise the temperature to 120°C, add 0.1 g of tetramethylammonium hydroxide, react for 1 h, add 1,3-bis(aminopropyl)tetramethyldisiloxane 12 g, continue the reaction for 3 h, then decompress and evacuate the air, seal at room temperature for 24 h, bake at 150°C for 2 h, and cool to room temperature.

[0084] Comparative Example 1

[0085] The processing method of the high-strength nylon fabric of this comparative example comprises the following steps:

[0086] Immerse the nylon fabric substrate in the finishing agent for 10 seconds, take it out, bake it at 80℃ for 10 minutes, then cure it at 160℃ for 2 minutes, and finally cool it at room temperature.

[0087] The preparation method of the finishing agent comprises the following steps:

[0088] In a three-necked flask equipped with a stirrer, a thermometer and a reflux condenser, add 30g of polyetheramine (number average molecular weight is 3000) and 1.2g of adipic acid, heat to 65°C, react for 2h, cool to room temperature after the reaction is completed, and wash the product to remove impurities.

[0089] Comparative Example 2

[0090] The processing method of the high-strength nylon fabric of this comparative example comprises the following steps:

[0091] Immerse the nylon fabric substrate in the finishing agent for 10 seconds, take it out, bake it at 80℃ for 10 minutes, then cure it at 160℃ for 2 minutes, and finally cool it at room temperature.

[0092] The preparation method of the finishing agent comprises the following steps:

[0093] In a three-necked flask equipped with a stirrer, a thermometer and a reflux condenser, add 30 g of amino-terminated polydimethylsiloxane (number average molecular weight is 3000) and 0.93 g of maleic anhydride, raise the temperature to 75 ° C, react for 1.5 hours, and cool to room temperature after the reaction is completed. The product is washed to remove impurities.

[0094] Performance testing

[0095] Surface resistivity test

[0096] The surface resistivity of the high-strength nylon fabrics processed in Examples 1-5 and Comparative Examples 1-2 was tested in accordance with GB / T12703.4-2010 "Evaluation of electrostatic properties of textiles - Part 4: Resistivity". The test results are shown in Table 1. Figure 1 ;

[0097] Treatment of high-strength nylon fabric: Wash the high-strength nylon fabric with washing powder of pH 8-9, wash 50 times, wash for 60 minutes per wash, use 0.1 kg of washing powder per wash, use 1 L of water for washing, pre-dry at 50°C for 30 minutes after washing, measure the surface resistivity before and after washing, and calculate the surface resistivity change rate after washing according to the formula: surface resistivity change rate = (surface resistivity after washing - surface resistivity before washing) / surface resistivity before washing × 100%. The surface resistivity change rate results are shown in Figure 1 .

[0098] Result Analysis

[0099] from Figure 1 It can be seen from the data of the embodiment and the comparative example that the surface resistivity of the high-strength nylon fabric processed by the embodiment is lower than that of the high-strength nylon fabric processed by the comparative example, indicating that the antistatic performance of the high-strength nylon fabric of the embodiment is better than that of the comparative example, and the surface resistivity change rate of the high-strength nylon fabric of the embodiment is lower than that of the high-strength nylon fabric of the comparative example, indicating that the antistatic durability of the high-strength nylon fabric of the embodiment is better than that of the comparative example. After multiple washings, the surface resistivity change rate is small.

[0100] from Figure 1 It can be seen from the data of Examples 1-3 that when the amino-terminated polymer is polyetheramine, the surface resistivity of the high-strength nylon fabric is smaller, indicating that polyetheramine has better antistatic properties than aminopolysiloxane. This may be because polyetheramine has better hydrophilicity than aminopolysiloxane, which is more conducive to the leakage and transfer of static charge, and therefore has better antistatic properties; however, when the amino-terminated polymer is polyetheramine, the surface resistivity change rate of the high-strength nylon fabric is greater, indicating that the binding force between polyetheramine and nylon fabric is weaker than that of aminopolysiloxane and it is easier to be washed off, so the antistatic durability is slightly worse.

[0101] from Figure 1 It can be seen from the data of Examples 4-5 that after allyl polyether is introduced into the amino-terminated polysiloxane, the surface resistivity and surface resistivity change rate of the high-strength nylon fabric are smaller, indicating that the amino-terminated polysiloxane has better antistatic properties and antistatic durability after being modified with allyl polyether.

[0102] 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 non-creative modifications to the present embodiment as needed, but as long as they are within the scope of the claims of the present application, they are protected by the patent law.

Claims

1. A method for processing high-strength nylon fabric, characterized in that: The method comprises the following steps: immersing a nylon fabric substrate into a finishing agent for impregnation treatment, taking it out, drying, curing and cooling it; The preparation method of the finishing agent comprises the following steps: S1: reacting a polycarboxylic acid compound with an amino-terminated polymer to obtain a carboxyl-terminated modified polymer; S2: dissolving the terminal carboxyl modified polymer and the terminal amino polymer in an organic solvent for assembly.

2. The method for processing high-strength nylon fabric according to claim 1, characterized in that: In step S1, the molar ratio of the carboxyl group in the polycarboxylic acid compound to the amino group in the amino-terminated polymer is 1:(0.8-0.95).

3. The method for processing high-strength nylon fabric according to claim 1, characterized in that: In step S1, the polycarboxylic acid compound is a dicarboxylic acid or a dicarboxylic anhydride; And / or, the amino-terminated polymer is a polyetheramine.

4. The method for processing high-strength nylon fabric according to claim 1, characterized in that: In step S2, the mass ratio of the carboxyl-terminated polymer to the amino-terminated polymer is 1:(0.8-1.2).

5. The method for processing high-strength nylon fabric according to claim 1, characterized in that: In step S1, the preparation method of the amino-terminated polymer is as follows: The cyclic siloxane is heated to 90-120°C, a ring-opening catalyst is added, a polymerization reaction is carried out, and then an amino end-capping agent is added and the reaction is continued to obtain the product.

6. The method for processing high-strength nylon fabric according to claim 5, characterized in that: The cyclic siloxane is one or more of hexamethylcyclotrisiloxane, octamethylcyclotetrasiloxane, decamethylcyclopentasiloxane and dodecamethylcyclohexasiloxane; and / or, the amino end-capping agent is one of 1,3-bis(aminopropyl)tetramethyldisiloxane, γ-aminopropyltriethoxysilane, N-(β-aminoethyl)-γ-aminopropyltrimethoxysilane and N-β-(aminoethyl)-γ-aminopropylmethyldimethoxysilane; And / or, the mass ratio of the cyclic siloxane to the amino end-capping agent is 1:(1-2).

7. The method for processing high-strength nylon fabric according to claim 5, characterized in that: The cyclic siloxane is prepared by hydrosilylation addition reaction of 1,3,5,7-tetramethylcyclotetrasiloxane and allyl polyether under the action of a catalyst.

8. The method for processing high-strength nylon fabric according to claim 7, characterized in that: The molar ratio of the 1,3,5,7-tetramethylcyclotetrasiloxane to the allyl polyether is 1:(4-4.5).

9. The method for processing high-strength nylon fabric according to claim 7, characterized in that: The temperature of the hydrosilylation reaction is 80-100°C.

10. A high-strength nylon fabric, characterized in that: The invention is prepared by the processing method according to any one of claims 1 to 9.

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