A moisture-absorbing and breathable chemical fiber fabric containing fine denier polyamide filament and its preparation method

Abstract

The present invention discloses a moisture-absorbing and breathable chemical fiber fabric containing fine denier polyamide filaments and a preparation method thereof, belonging to the technical field of chemical fiber fabrics. First, 90-100 parts by weight 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 then drawn into filaments to obtain polyester fibers. Then, the polyester fibers, acetate fibers and polyamide filaments are blended to obtain a moisture-absorbing and breathable chemical fiber fabric. The auxiliary agent containing carvacrol, sulfonamide group and organosilicon quaternary ammonium salt has good compatibility with the rest of the raw materials of polyester fiber. Therefore, the auxiliary agent can play a full role, making the polyester fiber have excellent and stable antistatic property and antibacterial property; the polyester fiber, acetate fiber and polyamide filaments act synergistically, making the chemical fiber fabric of the present invention have excellent antibacterial property, antistatic property, moisture-absorbing and breathable property, abrasion resistance and mechanical properties, not easy to breed bacteria, and washable and wearable.

Description

Technical Field

[0001] The present invention belongs to the technical field of chemical fiber fabrics, and specifically 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 different raw material sources, chemical fibers are divided into man-made fibers made from natural macromolecular substances, synthetic fibers made from synthetic macromolecular substances, and inorganic fibers made from inorganic substances. Fabrics made of chemical fibers have been widely used in various fields.

[0003] However, the currently used chemical fiber fabrics generally have problems such as poor moisture absorption and breathability, antistatic property, and antibacterial property. The non-moisture-absorbing, non-breathable, and non-antibacterial fabrics not only affect the wearing comfort, but also cause moisture such as sweat and hot air to stay on the clothes, breed bacteria and fungi, produce a sweaty smell, and at the same time cause skin diseases, infections and other problems. In addition, the currently used chemical fiber fabrics have poor abrasion 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 by the following technical solutions:

[0006] A preparation method of a moisture-absorbing and breathable chemical fiber fabric containing fine-denier nylon filaments includes the following steps:

[0007] First, 90-100 parts by weight 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 then drawn into filaments to obtain polyester fibers. Then, the polyester fibers, acetate fibers, and nylon filaments are blended to prepare a moisture-absorbing and breathable chemical fiber fabric.

[0008] Further, the polyester resin is one of polyethylene terephthalate resin and polybutylene terephthalate resin.

[0009] Further, the antioxidant is one or several of antioxidant 1010, antioxidant 168, antioxidant 1076, and antioxidant DLTP.

[0010] Further, the ultraviolet absorber is one or several of ultraviolet absorber UVP-327, ultraviolet absorber UV-326, and ultraviolet absorber UV-P.

[0011] Further, the auxiliary agent is prepared by the following steps:

[0012] S1. First, place the three-necked flask in an ice bath. Then, slowly add chlorosulfonic acid and stir and cool the chlorosulfonic acid in the ice bath to 10°C. Subsequently, slowly add carvacrol while stirring, maintain the temperature at 10°C and stir for 0.5 h. Then, raise the temperature to 60°C and react for 2 h. After the reaction is completed, slowly dilute the mixture in ice water, precipitate, filter, wash the precipitate with ice water, and dry to obtain Intermediate 1. The dosage ratio of carvacrol to chlorosulfonic acid is 15 g:40 mL.

[0013] Under heating conditions, the molar ratio of chlorosulfonic acid to carvacrol is controlled to be 1.4 - 1.6:1. The excess chlorosulfonic acid sulfonates carvacrol to obtain Intermediate 1, and the reaction equation is as follows:

[0014]

[0015] S2. Under nitrogen protection, add Intermediate 1, N-methylethylenediamine, and dimethyl sulfoxide to a dry three-necked flask, stir to dissolve, then cool the system to 10°C through an ice bath. Subsequently, slowly add triethylamine while stirring. After adding, raise the temperature to 50°C and stir for 6 h. After the reaction is completed, cool to room temperature and perform vacuum distillation to obtain Intermediate 2. The dosage ratio of Intermediate 1, N-methylethylenediamine, triethylamine, and dimethyl sulfoxide is 22.4 g:8.4 mL:15 mL:180 mL.

[0016] 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 an amidation reaction under heating, and the reaction process is as follows:

[0017]

[0018] S3. Blow nitrogen into the dry three-necked flask for 30 min to expel the air and moisture in the flask. Then, add Intermediate 2 and dimethyl sulfoxide, stir evenly, raise the temperature to 65°C, and then slowly add KH560 (3-glycidoxypropyltrimethoxysilane) under nitrogen protection. After adding, keep the temperature for reaction for 3 h. After the reaction is completed, cool to room temperature, perform vacuum distillation, and purify by column chromatography (the eluent is a mixed solvent of chloroform and ether, and the volume ratio of chloroform to ether is 8:2), and then perform vacuum distillation to obtain Intermediate 3. The dosage ratio of Intermediate 2, KH560, and dimethyl sulfoxide is 24.6 g:17.7 mL:200 mL.

[0019] Control the molar ratio of Intermediate 2 to KH560 to be 1.05 - 1.1:1. Then, the -NH- of Intermediate 2 and the epoxy group of KH560 react under heating conditions, and the reaction process is as follows:

[0020]

[0021] S4. Nitrogen was blown into the three-necked flask for 30 min to expel the air and moisture inside the flask. Subsequently, intermediate 3, triethylamine, and DMF (N,N-dimethylformamide) were added. After stirring and dissolving, the temperature was raised to 70 °C, and then tetradecyl chloride was slowly added. After the addition was completed, the reaction was continued at 70 °C for 4 h. After the reaction ended, it was cooled to room temperature, and then distilled under reduced pressure to obtain the additive; the dosage ratio of intermediate 3, tetradecyl chloride, triethylamine, and DMF was 41.8 g: 20.3 mL: 12.5 mL: 240 mL.

[0022] Triethylamine was used as an acid-binding agent to control the molar ratio of intermediate 3 to tetradecyl chloride to be 1.05 - 1.1:1. Intermediate 3 and tetradecyl chloride underwent a nucleophilic substitution reaction under heating. The reaction process is shown as follows:

[0023]

[0024] The additive contains carvacrol, which can effectively inhibit the growth and reproduction of various pathogenic bacteria and has a strong bactericidal effect. The sulfonamide group is a pharmacophore of antibacterial compounds. Therefore, introducing the sulfonamide group into the structure of carvacrol can enhance the antibacterial activity of carvacrol, especially the activity against Staphylococcus aureus.

[0025] The additive contains organosilicon quaternary ammonium salt. The organosilicon quaternary ammonium salt uses organosilicon as a medium to strongly adsorb the ammonium cation group with bactericidal properties on the surface of bacteria, changing the permeability of the bacterial cell wall, causing enzymes, coenzymes, and metabolic intermediates in the bacteria to overflow, and resulting in the death of microorganisms due to the cessation of respiratory function, thereby achieving the effects of sterilization and antibacterial. The organosilicon quaternary ammonium salt has the effects of high temperature resistance and water wash resistance, and has a wide antibacterial range. It can effectively inhibit Gram-positive bacteria, Gram-negative bacteria, yeasts, and fungi. The fabric treated with the organosilicon quaternary ammonium salt not only has excellent antibacterial properties, but also has good water absorption and sweat absorption, softness, smoothness, resilience, antistatic property, and anti-pollution property.

[0026] The additive contains lipophilic long carbon chains, benzene rings, ether bonds, etc. Therefore, the compatibility between the additive and the other raw materials is good, and the additive can be evenly dispersed in the polyester fiber. Therefore, carvacrol, sulfonamide group, and organosilicon quaternary ammonium salt in the additive can fully play a synergistic role, endowing the additive with high antibacterial and antistatic effects. Furthermore, the additive can effectively protect the chemical fiber fabric, making it not easy to generate static electricity and not easy to breed bacteria, thus causing health problems such as skin infections.

[0027] Acetate fiber is a fiber acetate obtained by the reaction of cellulose and acetic anhydride, which is made through chemical treatment and belongs to a kind of synthetic fiber. Acetate fiber has strong hygroscopicity, good air permeability, good resilience, is not easy to generate static electricity, has a strong luster, bright colors, is skin-friendly and comfortable to wear, and is not easy to pilling. In addition, acetate fiber also has excellent drapability and hand feeling. Blending acetate fiber with polyester fiber and polyamide filament can effectively improve the moisture absorption and air permeability of the fabric of the present invention.

[0028] Furthermore, the polyamide filament is a fine denier polyamide filament with a fineness of 0.55 - 1.1 dtex.

[0029] Fine denier polyamide filament has characteristics such as light weight, high strength, and good abrasion resistance. Its abrasion resistance is 10 times that of cotton fiber, 10 times that of dry viscose fiber, and 140 times that of wet fiber. In addition, polyamide filament also has good heat resistance, corrosion resistance, and light resistance. Blending fine denier polyamide filament with acetate fiber and polyester fiber can effectively improve the abrasion resistance and mechanical properties of the fabric of the present invention. Therefore, the fabric of the present invention is not easy to be damaged even after long-term wearing and multiple washings, and its service life is greatly extended.

[0030] Furthermore, the mass ratio of the polyester fiber, acetate fiber, and polyamide filament is 1:(3 - 5):1.

[0031] The present invention also discloses a moisture-absorbing and breathable chemical fiber fabric containing fine denier polyamide filament, and this moisture-absorbing and breathable chemical fiber fabric is prepared according to the preparation method of a moisture-absorbing and breathable chemical fiber fabric containing fine denier polyamide filament as described above.

[0032] The beneficial effects of the present invention: The compatibility between the auxiliary agent containing carvacrol, sulfonamide group, and organosilicon quaternary ammonium salt and the rest of the raw materials of the polyester fiber is good. Therefore, the auxiliary agent can fully play its role, making the polyester fiber have excellent and stable antistatic property and antibacterial property; the polyester fiber, acetate fiber, and polyamide filament act synergistically, making the chemical fiber fabric of the present invention excellent in antibacterial property, antistatic property, moisture absorption and air permeability, abrasion resistance, and mechanical properties, not easy to breed bacteria, and washable and wearable. Specific Embodiments

[0033] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present invention.

[0034] Example 1, preparing the auxiliary agent, the specific steps are as follows:

[0035] 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 the ice bath to 10 °C. Subsequently, slowly add 15 g of carvacrol while stirring, and keep the temperature at 10 °C and stir for 0.5 h. Then, raise the temperature to 60 °C and react for 2 h. After the reaction is completed, slowly dilute the mixture in ice water, precipitate, filter, wash the precipitate with ice water, and dry it to obtain Intermediate 1.

[0036] S2. Under nitrogen protection, add 22.4 g of Intermediate 1, 8.4 mL of N-methylethylenediamine, and 180 mL of dimethyl sulfoxide to a 500 mL dry three-necked flask. After stirring and dissolving, cool the system to 10 °C through an ice bath. Subsequently, slowly add 15 mL of triethylamine while stirring. After adding, raise the temperature to 50 °C and stir for 6 h. After the reaction is completed, cool to room temperature and perform vacuum distillation to obtain Intermediate 2.

[0037] S3. Blow nitrogen into a 500 mL dry three-necked flask for 30 min to remove the air and moisture in the flask. Then, add 24.6 g of Intermediate 2 and 200 mL of dimethyl sulfoxide, stir evenly, and raise the temperature to 65 °C. Then, slowly add 17.7 mL of KH560 under nitrogen protection. After adding, keep the temperature for reaction for 3 h. After the reaction is completed, cool to room temperature and perform vacuum distillation. Purify by column chromatography (select a mixed solvent of chloroform and ether as the eluent, and the volume ratio of chloroform to ether is 8:2), and perform vacuum distillation to obtain Intermediate 3.

[0038] S4. Blow nitrogen into a 500 mL dry three-necked flask for 30 min to remove the air and moisture in the flask. Then, add 41.8 g of Intermediate 3, 12.5 mL of triethylamine, and 240 mL of DMF. After stirring and dissolving, raise the temperature to 70 °C, and then slowly add 20.3 mL of tetradecyl chloride. After adding, continue to keep the temperature at 70 °C for reaction for 4 h. After the reaction is completed, cool to room temperature and perform vacuum distillation to obtain the additive.

[0039] Example 2. Preparation of a moisture-absorbing and breathable chemical fiber fabric. The specific steps are as follows:

[0040] First, mix 90 parts by weight of polyethylene terephthalate resin, 0.6 part of antioxidant 1010, 0.6 part of ultraviolet absorber UVP-327, and 1 part of the additive prepared in Example 1, melt and then draw into filaments to obtain polyester fibers. Then, blend the polyester fibers, acetate fibers, and fine denier polyamide 6 filament with a fineness of 0.55 dtex (the mass ratio of polyester fibers, acetate fibers, and polyamide 6 filaments is 1:3:1) to prepare a moisture-absorbing and breathable chemical fiber fabric.

[0041] Example 3. Preparation of a moisture-absorbing and breathable chemical fiber fabric. The specific steps are as follows:

[0042] First, 98 parts by weight of polybutylene terephthalate resin, 0.8 part of antioxidant 1010, 0.2 part of antioxidant 168, 1 part of ultraviolet absorber UV-326, and 1.5 parts of the auxiliary agent prepared in Example 1 were mixed, melted, and then drawn into filaments to obtain polyester fibers. Then, the polyester fibers, acetate fibers, and fine denier polyamide filaments with a fineness of 0.8 dtex were blended (the mass ratio of polyester fibers, acetate fibers, and polyamide filaments was 1:4:1) to prepare a moisture-absorbing and breathable chemical fiber fabric.

[0043] Example 4. To prepare a moisture-absorbing and breathable chemical fiber fabric, the specific steps are as follows:

[0044] First, 100 parts by weight of polyethylene terephthalate resin, 0.8 part of antioxidant 1076, 0.4 part of antioxidant DLTP, 0.6 part of ultraviolet absorber UVP-327, 0.6 part of ultraviolet absorber UV-P, and 2 parts of the auxiliary agent prepared in Example 1 were mixed, melted, and then drawn into filaments to obtain polyester fibers. Then, the polyester fibers, acetate fibers, and fine denier polyamide filaments with a fineness of 1.1 dtex were blended (the mass ratio of polyester fibers, acetate fibers, and polyamide filaments was 1:5:1) to prepare a moisture-absorbing and breathable chemical fiber fabric.

[0045] Comparative Example 1. To prepare a chemical fiber fabric, the specific steps are as follows:

[0046] The remaining steps remained unchanged, and only the auxiliary agent in Example 2 was removed to prepare a chemical fiber fabric.

[0047] Comparative Example 2. To prepare a chemical fiber fabric, the specific steps are as follows:

[0048] The remaining steps remained unchanged, and only the auxiliary agent in Example 2 was replaced with dodecyl dimethyl ammonium chloride to prepare a chemical fiber fabric.

[0049] Performance Test

[0050] Antibacterial property test: According to GB / T20944.3-2008 "Evaluation of antibacterial properties of textiles - Part 3: Oscillation method", the antibacterial properties of the chemical fiber fabrics of Examples 2-4 and Comparative Examples 1-2 were tested. Bacterial strains: Escherichia coli ATCC25922, Staphylococcus aureus ATCC6538, Candida albicans ATCC10231. The test results of all items are shown in Table 1 below:

[0051] Table 1

[0052]

[0053] As can be seen from the above table, the antibacterial fabric obtained in the embodiments of the present invention has excellent antibacterial effects. 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 far better than that of the 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.

[0054] Antistatic performance test: According to GB / T 12703.1-2008 "Evaluation of Electrostatic Properties of Textiles", the surface charge 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 surface charge density, the better the antistatic performance). The test results are shown in Table 2 below:

[0055] Table 2

[0056]

[0057] The chemical fiber fabrics (gram weight 500 g / m 2 ) obtained in Examples 2-4 and Comparative Examples 1-2 were subjected to the following performance tests, and the test results are shown in Table 3:

[0058] Table 3

[0059]

[0060] In the description of the specification, the description with reference to terms such as "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0061] The above content is only an example and illustration of the present invention. Those skilled in the art of the present technology can make various modifications or supplements to the described specific embodiments or use similar methods for substitution, as long as they do not deviate from the invention or exceed the scope defined by the claims of the present invention, they should all fall within the protection scope of the present invention.

Claims

1. A preparation method of a moisture-absorbing and breathable chemical fiber fabric containing fine-denier polyamide filament, characterized in that, Including the following steps: First, mix 90 - 100 parts by weight 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, melt them, and then draw them into filaments to obtain polyester fibers. Then, blend the polyester fibers, acetate fibers, and nylon filaments to obtain a moisture-absorbing and breathable chemical fiber fabric; Among them, the auxiliary agent is prepared through the following steps: S1. Place the flask in an ice bath, add chlorosulfonic acid, cool it to 10°C, add carvacrol, react at 10°C for 0.5 h, raise the temperature to 60°C and react for 2 h, then dilute the mixture in ice water, precipitate, filter, wash, and dry to obtain Intermediate 1; the dosage ratio of carvacrol to chlorosulfonic acid is 15 g:40 mL; S2. Under nitrogen protection, add Intermediate 1, N-methyl ethylenediamine, and dimethyl sulfoxide to the flask, cool it to 10°C, then add triethylamine, raise the temperature to 50°C and react for 6 h, cool, and perform vacuum distillation to obtain Intermediate 2; the dosage ratio of Intermediate 1, N-methyl ethylenediamine, triethylamine, and dimethyl sulfoxide is 22.4 g:8.4 mL:15 mL:180 mL; Intermediate 1 and N-methyl ethylenediamine undergo an amidation reaction under heating; S3. After blowing nitrogen into the flask, add Intermediate 2 and dimethyl sulfoxide, raise the temperature to 65°C, add KH560, react for 3 h, cool, perform vacuum distillation, purify by column chromatography, and then perform vacuum distillation to obtain Intermediate 3; the dosage ratio of Intermediate 2, KH560, and dimethyl sulfoxide is 24.6 g:17.7 mL:200 mL; the -NH- of Intermediate 2 and the epoxy group of KH560 undergo a ring-opening reaction under heating conditions; S4. After blowing nitrogen into the flask, add Intermediate 3, triethylamine, and DMF, raise the temperature to 70°C, add tetradecyl chloride, react for 4 h, cool, and perform vacuum distillation to obtain the auxiliary agent; the dosage ratio of Intermediate 3, tetradecyl chloride, triethylamine, and DMF is 41.8 g:20.3 mL:12.5 mL:240 mL; Intermediate 3 and tetradecyl chloride undergo a nucleophilic substitution reaction under heating; The nylon filament is a fine-denier nylon filament with a fineness of 0.55 - 1.1 dtex.

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

3. The preparation method of a moisture-absorbing and breathable chemical fiber fabric containing fine denier polyamide filament according to claim 1, characterized in that, The antioxidant is one or several of antioxidant 1010, antioxidant 168, antioxidant 1076, and antioxidant DLTP.

4. The preparation method of a moisture-absorbing and breathable chemical fiber fabric containing fine denier polyamide filament according to claim 1, characterized in that, The ultraviolet absorber is one or several of ultraviolet absorber UVP-327, ultraviolet absorber UV-326, and ultraviolet absorber UV-P.

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

1.

6. A moisture-absorbing and breathable chemical fiber fabric containing fine denier polyamide filaments, characterized in that, Prepared according to the preparation method of a moisture-absorbing and breathable chemical fiber fabric containing fine-denier nylon filaments as described in any one of claims 1 - 5.

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