Moisture-absorbing breathable chemical fiber fabric containing fine denier chinlon filaments and preparation method of moisture-absorbing breathable chemical fiber fabric

Abstract

The invention discloses a moisture-absorbing breathable chemical fiber fabric containing fine denier chinlon filaments and a preparation method of the moisture-absorbing breathable chemical fiber fabric, and belongs to the technical field of chemical fiber fabrics. The preparation method comprises the following steps: mixing 90-100 parts by weight of polyester resin, 0.6-1.2 parts by weight of an antioxidant, 0.6-1.2 parts by weight of an ultraviolet light absorber and 1-2 parts by weight of an auxiliary agent, smelting, drawing and forming to obtain polyester fibers, and blending the polyester fibers, acetate fibers and chinlon filaments to obtain the moisture-absorption breathable chemical fiber fabric. The compatibility between the auxiliary agent containing carvacrol, sulfamide and organosilicon quaternary ammonium salt and other raw materials of the polyester fiber is good, so that the auxiliary agent can fully play a role, and the polyester fiber has excellent and stable antistatic property and antibacterial property; the polyester fibers, the cellulose acetate fibers and the chinlon filaments have a synergistic effect, so that the chemical fiber fabric is excellent in antibacterial property, antistatic property, moisture absorption and air permeability, wear resistance and mechanical property, not prone to breeding bacteria and resistant to washing and wearing.

Description

Technical Field

[0001] The invention belongs to the technical field of chemical fiber fabrics, and in particular relates to a moisture-absorbing and breathable chemical fiber fabric containing fine-denier nylon filaments and a preparation method thereof. Background Art

[0002] According to the different sources of raw materials, chemical fibers are divided into artificial fibers made from natural polymers, synthetic fibers made from synthetic polymers, and inorganic fibers made from inorganic materials. Fabrics made from chemical fibers have been widely used in various fields.

[0003] However, the chemical fiber fabrics currently used generally have poor moisture absorption and breathability, antistatic and antibacterial properties. The lack of moisture absorption and breathability and antibacterial properties of the fabrics not only affects the comfort of wearing, but also causes moisture such as sweat and heat to stay on the clothes, breeding bacteria and fungi, producing sweat odor and causing skin diseases, infections and other problems. In addition, the current chemical fiber fabrics have poor wear resistance and mechanical properties, and are easily damaged during wearing and washing. Summary of the invention

[0004] The purpose of the present invention is to overcome the defects of the prior art and provide a moisture-absorbing and breathable chemical fiber fabric containing fine-denier nylon filaments and a preparation method thereof.

[0005] The purpose of the present invention can be achieved through the following technical solutions: A method for preparing a moisture-absorbing and breathable chemical fiber fabric containing fine-denier nylon filaments comprises the following steps: First, 90-100 parts of polyester resin, 0.6-1.2 parts of antioxidant, 0.6-1.2 parts of ultraviolet absorber and 1-2 parts of auxiliary agent are mixed, melted and drawn to obtain polyester fiber, and then the polyester fiber, acetate fiber and nylon filament are blended to prepare moisture-absorbing and breathable chemical fiber fabric.

[0006] Furthermore, the polyester resin is one of polyethylene terephthalate resin and polybutylene terephthalate resin.

[0007] Furthermore, the antioxidant is one or more of antioxidant 1010, antioxidant 168, antioxidant 1076, and antioxidant DLTP.

[0008] Furthermore, the ultraviolet absorber is one or more of ultraviolet absorber UVP-327, ultraviolet absorber UV-326, and ultraviolet absorber UV-P.

[0009] Furthermore, the auxiliary agent is prepared by the following steps: S1. First, place a three-necked flask in an ice bath, then slowly add chlorosulfonic acid, stir and cool the chlorosulfonic acid in an ice bath to 10°C, then slowly add carvacrol while stirring, keep the temperature at 10°C and stir to react for 0.5h, then heat to 60°C and react for 2h. After the reaction, slowly dilute the mixture in ice water, precipitate, filter, wash the precipitate with ice water, and dry to obtain intermediate 1; the usage ratio of carvacrol to chlorosulfonic acid is 15g:40mL; Under heating conditions, the molar ratio of chlorosulfonic acid to carvacrol is controlled to be 1.4-1.6:1, and excess chlorosulfonic acid sulfonates carvacrol to obtain intermediate 1. The reaction equation is as follows:

[0010] S2, under nitrogen protection, add intermediate 1, N-methylethylenediamine and dimethyl sulfoxide to a dry three-necked flask, stir and dissolve, cool the system to 10°C in an ice bath, then slowly add triethylamine under stirring, raise the temperature to 50°C and stir to react for 6h after the addition is complete, cool to room temperature after the reaction is completed, and distill under reduced pressure to obtain intermediate 2; the amount ratio of intermediate 1, N-methylethylenediamine, triethylamine and dimethyl sulfoxide is 22.4g:8.4mL:15mL:180mL; Triethylamine is used as an acid binding agent, and the molar ratio of intermediate 1 to N-methylethylenediamine is controlled to be 1:1.05-1.1. Then, intermediate 1 and N-methylethylenediamine undergo amidation reaction under heating, and the reaction process is as follows:

[0011] S3, blow nitrogen gas through a dry three-necked flask for 30 minutes to expel air and moisture in the flask, then add intermediate 2 and dimethyl sulfoxide, stir evenly and heat to 65°C, then slowly add KH560 (3-glycidyloxypropyltrimethoxysilane) under nitrogen protection, keep warm for 3 hours after the addition is complete, cool to room temperature after the reaction is completed, distill under reduced pressure, purify by column chromatography (select a mixed solvent of chloroform and ether as the eluent, the volume ratio of chloroform and ether is 8:2), and distill under reduced pressure to obtain intermediate 3; the amount ratio of intermediate 2, KH560 and dimethyl sulfoxide is 24.6g:17.7mL:200mL; The molar ratio of intermediate 2 and KH560 is controlled to be 1.05-1.1:1, then -NH- of intermediate 2 and the epoxy group of KH560 react under heating conditions, and the reaction process is as follows:

[0012] S4. Blow nitrogen gas into a dry three-necked flask for 30 minutes to expel air and moisture from the flask, then add intermediate 3, triethylamine and DMF (N,N-dimethylformamide), stir to dissolve and heat to 70°C, then slowly add tetradecyl chloride. After the addition is complete, continue to keep the temperature at 70°C for 4 hours. After the reaction is completed, cool to room temperature and distill under reduced pressure to obtain an auxiliary agent. The usage ratio of intermediate 3, tetradecyl chloride, triethylamine and DMF is 41.8 g:20.3 mL:12.5 mL:240 mL.

[0013] Triethylamine is used as an acid binding agent, and the molar ratio of intermediate 3 to tetradecane chloride is controlled to be 1.05-1.1:1. Intermediate 3 and tetradecane chloride undergo a nucleophilic substitution reaction under heating. The reaction process is as follows:

[0014] The adjuvant contains carvacrol, which can effectively inhibit the growth and reproduction of a variety of pathogens and has a strong bactericidal effect. Sulfonamide is the pharmacophore of antibacterial compounds. Therefore, introducing sulfonamide into the structure of carvacrol can enhance the antibacterial activity of carvacrol, especially the activity against Staphylococcus aureus.

[0015] The additive contains organosilicon quaternary ammonium salts. Organosilicon quaternary ammonium salts use organosilicon as a medium to strongly adsorb the ammonium cation groups with bactericidal properties on the surface of bacteria, change the permeability of bacterial cell walls, and make the enzymes, coenzymes and metabolic intermediates in the bacteria overflow, causing the microorganisms to stop breathing and die, thereby achieving the effect of bactericidal and antibacterial. Organosilicon quaternary ammonium salts are resistant to high temperatures and water washing, and have a wide range of antibacterial effects. They can effectively inhibit Gram-positive bacteria, Gram-negative bacteria, yeasts and fungi. Fabrics finished with organosilicon quaternary ammonium salts not only have excellent antibacterial properties, but also have good water and sweat absorption, softness, smoothness, resilience, antistatic and anti-pollution properties.

[0016] The additive contains lipophilic long carbon chains, benzene rings and ether bonds, etc., so the additive has good compatibility with other raw materials and can be evenly dispersed in polyester fibers. Therefore, the carvacrol, sulfonamide group and silicone quaternary ammonium salt in the additive can give full play to the synergistic effect, giving the additive a high-efficiency antibacterial and antistatic effect. The additive can effectively protect chemical fiber fabrics, making it less likely to generate static electricity, breed bacteria, and cause health problems such as skin infections.

[0017] Acetate fiber is a fiber acetate obtained by the reaction of cellulose and acetic anhydride, which is made by chemical treatment and belongs to a kind of synthetic fiber. Acetate fiber has strong hygroscopicity, good air permeability, good resilience, is not easy to be electrified, has a strong gloss, bright colors, is skin-friendly and comfortable, is comfortable to wear and is not easy to pill. In addition, acetate fiber also has excellent drape and feel. Blending acetate fiber with polyester fiber and nylon filament can effectively improve the moisture absorption and air permeability of the fabric of the present invention.

[0018] Furthermore, the nylon filaments are fine-denier nylon filaments with a fineness of 0.55-1.1 dtex.

[0019] Fine-denier nylon filaments have the characteristics of being light, strong, and having good wear resistance. Their wear resistance is 10 times that of cotton fibers, 10 times that of dry viscose fibers, and 140 times that of wet fibers. In addition, nylon filaments also have good heat resistance, corrosion resistance, and light resistance. Blending fine-denier nylon filaments with acetate fibers and polyester fibers can effectively improve the wear resistance and mechanical properties of the fabric of the present invention. Therefore, the fabric of the present invention is not easily damaged even if worn for a long time and washed many times, and its service life is greatly extended.

[0020] Furthermore, the mass ratio of the polyester fiber, the acetate fiber and the nylon filament is 1:(3-5):1.

[0021] The invention also discloses a moisture-absorbing and breathable chemical fiber fabric containing fine-denier nylon filaments. The moisture-absorbing and breathable chemical fiber fabric is prepared according to the preparation method of the moisture-absorbing and breathable chemical fiber fabric containing fine-denier nylon filaments.

[0022] The beneficial effects of the present invention are as follows: the auxiliary agent containing carvacrol, sulfonamide and organosilicon quaternary ammonium salt has good compatibility with other raw materials of polyester fiber, so the auxiliary agent can fully play its role, so that the polyester fiber has excellent and stable antistatic and antibacterial properties; the polyester fiber, acetate fiber and nylon filament work synergistically, so that the chemical fiber fabric of the present invention has excellent antibacterial, antistatic, moisture absorption and air permeability, wear resistance and mechanical properties, is not easy to breed bacteria, and is washable and wear-resistant. DETAILED DESCRIPTION

[0023] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0024] Example 1, preparation of auxiliary agent, the specific steps are as follows: S1. First, place a 100 mL three-necked flask in an ice bath, then slowly add 40 mL of chlorosulfonic acid, stir and cool the chlorosulfonic acid in an ice bath to 10°C, then slowly add 15 g of carvacrol while stirring, keep the temperature at 10°C and stir to react for 0.5 h, then heat to 60°C and react for 2 h. After the reaction, slowly dilute the mixture in ice water, precipitate, filter, wash the precipitate with ice water, and dry to obtain intermediate 1; S2, under nitrogen protection, add 22.4g of intermediate 1, 8.4mL of N-methylethylenediamine and 180mL of dimethyl sulfoxide into a 500mL dry three-necked flask, stir to dissolve, cool the system to 10°C in an ice bath, then slowly add 15mL of triethylamine under stirring, raise the temperature to 50°C after the addition is complete, stir and react for 6h, cool to room temperature after the reaction is completed, and distill under reduced pressure to obtain intermediate 2; S3, nitrogen was blown into a 500 mL dry three-necked flask for 30 min to expel air and moisture in the flask, then 24.6 g of intermediate 2 and 200 mL of dimethyl sulfoxide were added, the mixture was stirred evenly and the temperature was raised to 65°C, and then 17.7 mL of KH560 was slowly added under nitrogen protection. After the addition was completed, the mixture was kept warm for 3 h. After the reaction was completed, the mixture was cooled to room temperature, distilled under reduced pressure, purified by column chromatography (a mixed solvent of chloroform and ether was selected as the eluent, and the volume ratio of chloroform to ether was 8:2), and distilled under reduced pressure to obtain intermediate 3; S4. Blow nitrogen gas into a 500mL dry three-necked flask for 30 minutes to expel air and moisture in the flask, then add 41.8g of intermediate 3, 12.5mL of triethylamine and 240mL of DMF, stir to dissolve and heat to 70°C, then slowly add 20.3mL of tetradecyl chloride, continue to react at 70°C for 4 hours after the addition is completed, cool to room temperature after the reaction is completed, and distill under reduced pressure to obtain an auxiliary agent.

[0025] Example 2, preparing a moisture-absorbing and breathable chemical fiber fabric, the specific steps are as follows: First, 90 parts of polyethylene terephthalate resin, 0.6 parts of antioxidant 1010, 0.6 parts of ultraviolet absorber UVP-327 and 1 part of the additive prepared in Example 1 were mixed, melted and drawn to obtain polyester fiber, and then the polyester fiber, acetate fiber and fine denier nylon filament with a fineness of 0.55 dtex were blended (the mass ratio of polyester fiber, acetate fiber and nylon filament was 1:3:1) to prepare a moisture-absorbing and breathable chemical fiber fabric.

[0026] Example 3, preparing a moisture-absorbing and breathable chemical fiber fabric, the specific steps are as follows: First, 98 parts of polybutylene terephthalate resin, 0.8 parts of antioxidant 1010, 0.2 parts of antioxidant 168, 1 part of ultraviolet absorber UV-326 and 1.5 parts of the additives prepared in Example 1 were mixed, melted, and then drawn to obtain polyester fibers. Then, the polyester fibers, acetate fibers and fine denier nylon filaments with a fineness of 0.8 dtex were blended (the mass ratio of polyester fibers, acetate fibers and nylon filaments was 1:4:1) to prepare moisture-absorbing and breathable chemical fiber fabrics.

[0027] Example 4, preparing a moisture-absorbing and breathable chemical fiber fabric, the specific steps are as follows: First, 100 parts of polyethylene terephthalate resin, 0.8 parts of antioxidant 1076, 0.4 parts of antioxidant DLTP, 0.6 parts of ultraviolet absorber UVP-327, 0.6 parts of ultraviolet absorber UV-P and 2 parts of the additives prepared in Example 1 were mixed, melted, and then drawn to obtain polyester fiber, and then the polyester fiber, acetate fiber and fine denier nylon filament with a fineness of 1.1 dtex were blended (the mass ratio of polyester fiber, acetate fiber and nylon filament was 1:5:1) to prepare a moisture-absorbing and breathable chemical fiber fabric.

[0028] Comparative Example 1: preparing chemical fiber fabrics, the specific steps are as follows: The remaining steps remain unchanged, only the auxiliary agent in Example 2 is removed to prepare the chemical fiber fabric.

[0029] Comparative Example 2, preparing chemical fiber fabrics, the specific steps are as follows: The remaining steps remain unchanged, only the auxiliary agent in Example 2 is replaced by didodecyl dimethyl ammonium chloride to prepare the chemical fiber fabric.

[0030] Performance Testing Antibacterial property test: According to GB / T20944.3-2008 "Evaluation of antibacterial properties of textiles Part 3: Oscillation method", the chemical fiber fabrics of Examples 2-4 and Comparative Examples 1-2 were tested for antibacterial properties. Bacteria: Escherichia coli ATCC25922, Staphylococcus aureus ATCC6538, Candida albicans ATCC10231. The test results of all items are shown in Table 1 below: Table 1

[0031] It can be seen from the above table that the antibacterial fabric obtained in the embodiment of the present invention has excellent antibacterial effect; from the comparison results of Example 2 and Comparative Example 1, it can be seen that the antibacterial effect of the antibacterial fabric of the present invention is much better than that of ordinary fabric without antibacterial agent; from the comparison results of Example 2 and Comparative Example 2, it can be seen that the three antibacterial structures of carvacrol, sulfonamide group and organosilicon quaternary ammonium salt in the auxiliary agent play a synergistic role to jointly improve the antibacterial effect of the fabric, and the antibacterial effect is better than that of the fabric using the existing antibacterial agent.

[0032] Antistatic performance test: According to GB / T 12703.1-2008 "Evaluation of electrostatic properties of textiles", the charge surface density of the chemical fiber fabrics of Examples 2-4 and Comparative Examples 1-2 was measured to test the antistatic performance (the smaller the charge surface density, the better the antistatic performance). The test results are shown in Table 2 below: Table 2

[0033] The chemical fiber fabrics (weight 500 g / m 2 ) The following performance tests were performed, and the test results are shown in Table 3: Table 3

[0034] In the description of the specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0035] The above contents are merely examples and explanations of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in a similar manner. As long as they do not deviate from the invention or exceed the scope defined by the claims, they shall all fall within the protection scope of the present invention.

Claims

1. A method for preparing a moisture-absorbing and breathable chemical fiber fabric containing fine-denier nylon filaments, characterized in that: The following steps are involved: First, 90-100 parts of polyester resin, 0.6-1.2 parts of antioxidant, 0.6-1.2 parts of ultraviolet absorber and 1-2 parts of auxiliary agent are mixed, melted and drawn to obtain polyester fiber, and then the polyester fiber, acetate fiber and nylon filament are blended to obtain moisture-absorbing and breathable chemical fiber fabric; Wherein, the auxiliary agent is prepared by the following steps: S1. Place the flask in an ice bath, add chlorosulfonic acid, cool to 10°C, add carvacrol, react at 10°C for 0.5h, heat to 60°C for 2h, dilute the mixture in ice water, precipitate, filter, wash, and dry to obtain intermediate 1; the ratio of carvacrol to chlorosulfonic acid is 15g:40mL; S2. Under nitrogen protection, add intermediate 1, N-methylethylenediamine and dimethyl sulfoxide into a flask, cool to 10°C, add triethylamine, heat to 50°C, react for 6h, cool, and distill under reduced pressure to obtain intermediate 2; the amount ratio of intermediate 1, N-methylethylenediamine, triethylamine and dimethyl sulfoxide is 22.4g:8.4mL:15mL:180mL; S3, after nitrogen blowing the flask, add intermediate 2 and dimethyl sulfoxide, heat to 65°C, add KH560, react for 3h, cool, distill under reduced pressure, purify by column chromatography, and distill under reduced pressure to obtain intermediate 3; the amount ratio of intermediate 2, KH560 and dimethyl sulfoxide is 24.6g:17.7mL:200mL; S4. After nitrogen is blown into the flask, intermediate 3, triethylamine and DMF are added, the temperature is raised to 70°C, tetradecane chloride is added, the reaction is carried out for 4 hours, the mixture is cooled, and the mixture is distilled under reduced pressure to obtain an auxiliary agent; the dosage ratio of intermediate 3, tetradecane chloride, triethylamine and DMF is 41.8 g:20.3 mL:12.5 mL:240 mL.

2. The method for preparing a moisture-absorbing and breathable chemical fiber fabric containing fine-denier nylon filaments according to claim 1, characterized in that: The polyester resin is one of polyethylene terephthalate resin and polybutylene terephthalate resin.

3. The method for preparing a moisture-absorbing and breathable chemical fiber fabric containing fine-denier nylon filaments according to claim 1, characterized in that: The antioxidant is one or more of antioxidant 1010, antioxidant 168, antioxidant 1076, and antioxidant DLTP.

4. The method for preparing a moisture-absorbing and breathable chemical fiber fabric containing fine-denier nylon filaments according to claim 1, characterized in that: The ultraviolet absorber is one or more of the ultraviolet absorber UVP-327, the ultraviolet absorber UV-326, and the ultraviolet absorber UV-P.

5. The method for preparing a moisture-absorbing and breathable chemical fiber fabric containing fine-denier nylon filaments according to claim 1, characterized in that: The nylon filaments are fine-denier nylon filaments with a fineness of 0.55-1.1 dtex.

6. The method for preparing a moisture-absorbing and breathable chemical fiber fabric containing fine-denier nylon filaments according to claim 1, characterized in that: The mass ratio of the polyester fiber, the acetate fiber and the nylon filament is 1:(3-5):

1.

7. A moisture-absorbing and breathable chemical fiber fabric containing fine-denier nylon filaments, characterized in that: The fabric is prepared according to the method for preparing a moisture-absorbing and breathable chemical fiber fabric containing fine-denier nylon filaments as described in any one of claims 1 to 6.

Images