A wear-resistant, tear-resistant, and antistatic fabric and its preparation process

Abstract

The present invention relates to the field of textile fabrics, specifically a wear-resistant, tear-resistant, and antistatic fabric and its preparation process. By controlling the composition and content of the warp and weft yarns of the outer fabric, a base fabric for the outer fabric with easy washing and quick drying, not easy to wrinkle, and good stiffness is obtained; through the treatment of the outer fabric base fabric and sericin, sericin is introduced to improve the antistatic property of the fabric; a stain-proof finishing liquid is prepared with trialkoxy-terminated polydimethylsiloxane with low surface energy and composite titanium dioxide with photocatalytic activity; and the composite titanium dioxide is obtained by compounding molybdenum disulfide and hydrogenated titanium dioxide, which not only improves the hydrophobic stain-proof property of the fabric, but also synergistically enhances the wear resistance and antibacterial property of the fabric; citric acid-modified chitosan is used to modify the waterborne polyurethane adhesive, and the modified waterborne polyurethane adhesive is used to composite the outer fabric and the inner fabric, greatly extending the antibacterial persistence of the fabric.

Description

Technical Field

[0001] The present invention relates to the field of textile fabrics, and specifically to a wear-resistant, tear-resistant, and antistatic fabric and its preparation process. Background Art

[0002] Denim fabrics are loved by a large number of consumers because of their practical durability, bright colors, and good shape retention. However, traditional denim fabrics have a relatively hard texture and poor elasticity, and there are certain defects in the comfort of wearing them close to the body. Traditional denim fabrics are difficult to meet the needs of existing consumers.

[0003] Existing consumers have put forward more requirements for the functionality of denim fabrics, such as having better antistatic, waterproof, ultraviolet-proof, antibacterial, wear-resistant and other characteristics; because textiles are prone to generate static electricity due to friction and induction during production and use, and the charges generated by conventional fiber materials are not easily dissipated, which will cause fiber entanglement, uneven fabric folding and other phenomena, affecting the production progress; during the use of the fabric, the accumulation of static charges will cause dust adhesion. Summary of the Invention

[0004] The purpose of the present invention is to provide a wear-resistant, tear-resistant, and antistatic fabric and its preparation process to solve the problems in the prior art.

[0005] To solve the above technical problems, the present invention provides the following technical solutions:

[0006] A preparation process for a wear-resistant, tear-resistant, and antistatic fabric, comprising the following steps:

[0007] S1: Mix and weave cotton fibers and nylon 66 yarns as the warp, and mix and weave cotton fibers, T400 composite fibers, spandex fibers and high molecular weight polyethylene as the weft, weave smoothly, dye, and shape to obtain an outer fabric base cloth;

[0008] S2: Immerse the outer fabric base cloth in a hydroxylation modification solution to obtain a surface hydroxylation modified base cloth;

[0009] S3: Perform surface modification on the surface hydroxylation modified base cloth with maleic anhydride to obtain a surface vinylated base cloth;

[0010] S4: Immerse the surface vinylated base cloth in an antistatic finishing solution, add a photoinitiator, irradiate under the condition of introducing nitrogen, take out and dry to obtain an antistatic base cloth;

[0011] S5: Immerse the antistatic base cloth in a stain-proof finishing solution, take out and dry to obtain an outer fabric;

[0012] S6: The inner fabric is knitted polar fleece. The inner fabric and the outer fabric are compounded with a modified waterborne polyurethane adhesive to obtain a wear-resistant, tear-resistant and antistatic fabric.

[0013] Further, by mass percentage, the composition of the outer fabric base fabric is: 65-70% cotton fiber, 10-15% nylon 66 yarn, 10-20% high molecular weight polyethylene, 2-5% T400 composite fiber, 1-5% spandex fiber.

[0014] Further, the inner fabric is knitted polar fleece.

[0015] Further, the composition of the hydroxylation modification liquid is: in step S2, deionized water is used as the solvent, where the mass concentration of NaOH is 10-20 g / L, and the mass concentration of cetyltrimethylammonium bromide is 3-6 g / L; the working conditions of the impregnation treatment in step S2 are: temperature 85-90 °C, time 1 h.

[0016] Further, in step S3, the mass ratio of the surface hydroxylated modified base fabric to maleic anhydride is 3:1, the system pH is 7.2-8.2, the bath ratio is 1:10, and the reaction time is 9-10 h.

[0017] Further, in step S4, the working conditions of the light irradiation are: irradiation treatment at 365 nm for 10-15 min.

[0018] Further, the preparation of the antistatic finishing liquid includes the following steps:

[0019] Mix mulberry silk, sodium carbonate and deionized water, keep warm at 95-100 °C for 3-4 h, cool, dialyze in deionized water for 48 h, add maleic anhydride and stir, adjust the pH to 7-8, and keep warm at 0-5 °C for 5-6 h to obtain the antistatic finishing liquid.

[0020] Further, the preparation of the antifouling finishing liquid includes the following steps:

[0021] 1) Mix titanium dioxide and sodium borohydride and grind for 20-30 min. Under an argon atmosphere, heat from 25 °C to 300 °C at a rate of 10 °C / min, then keep warm for 30-40 min, cool, wash with deionized water and absolute ethanol, and dry to obtain hydrogenated titanium dioxide;

[0022] 2) Mix hydrogenated titanium dioxide, molybdenum disulfide and deionized water, stir ultrasonically for 20-30 min, transfer to a reaction kettle with a polytetrafluoroethylene inner lining, keep at 95-100 °C for 9-10 h, centrifuge, wash, and dry to obtain composite titanium dioxide;

[0023] (3) Mix trialkoxy-terminated polydimethylsiloxane and tetrahydrofuran, add hydrochloric acid and stir for 1 h; add composite titanium dioxide and stir for 22 - 24 h to obtain a suspension liquid, i.e., the antifouling finishing liquid.

[0024] Furthermore, the mass ratio of trialkoxy-terminated polydimethylsiloxane to composite titanium dioxide is 1:1.

[0025] Furthermore, the preparation of the modified waterborne polyurethane adhesive includes the following steps:

[0026] (1) Mix citric acid and chitosan with a molar ratio of 2:1, stir for 20 - 30 min, centrifuge, wash, and dry to obtain citric acid-modified chitosan.

[0027] (2) Mix citric acid-modified chitosan and deionized water, ultrasonically disperse for 1 - 2 h, adjust the pH value to 8.8 - 9.2, add the waterborne polyurethane adhesive and mix, and stir at 15 - 25 °C for 1 - 2 h to obtain the modified waterborne polyurethane adhesive.

[0028] The beneficial effects of the present invention:

[0029] The present invention provides a wear-resistant, tear-resistant, and antistatic fabric and its preparation process. The warp of the prepared fabric is woven by mixing cotton fiber and nylon 66 yarn, and the weft is woven by mixing cotton fiber, T400 composite fiber, spandex fiber, and high molecular weight polyethylene. Through process and composition optimization, the prepared fabric has excellent wear resistance, tear resistance, antistatic property, and antibacterial property, greatly improving the functionality and comfort of the fabric.

[0030] The warp of the prepared outer fabric is woven by mixing cotton fiber and nylon 66 yarn to improve the wear resistance of the fabric, and the weft of the outer fabric is woven by mixing cotton fiber, T400 composite fiber, spandex fiber, and high molecular weight polyethylene to improve the tear resistance of the fabric; the inner fabric is made of conductive filament polar fleece to synergistically improve the antistatic and warm-keeping functions of the fabric; the inner fabric and the outer fabric are compounded with a modified waterborne polyurethane adhesive with antibacterial function to improve the antibacterial property of the fabric.

[0031] By controlling the composition and content of the warp and weft of the outer fabric, a base fabric of the outer fabric with easy washing and quick drying, not easy to wrinkle, and good stiffness is obtained, improving the comfort of the fabric. However, most of the macromolecules of the fibers in the base fabric of the outer fabric are symmetric structures and the phenyl groups are rigid, lacking hydrophilic groups, which are prone to generate static electricity during use.

[0032] In the existing textile industry, after the fabric is subjected to alkali weight reduction treatment, crosslinking is carried out through glutaraldehyde to endow the fabric with certain antistatic properties. However, aldehyde finishing agents such as glutaraldehyde have the problem of being not environmentally friendly.

[0033] In the present invention, through the treatment of the outer fabric base cloth and sericin, sericin is introduced to improve the antistatic property of the fabric; the introduced sericin has good hydrophilicity and biological safety, improving the comfort of the fabric. First, the outer fabric base cloth is subjected to alkali weight reduction treatment to introduce hydroxyl reaction sites on the surface, and then maleic anhydride is grafted to obtain a vinylated outer fabric base cloth; and vinyl groups are introduced into sericin to enhance its reactivity. Under photocatalysis, sericin is grafted onto the fabric surface through free radical polymerization, improving the hydrophilicity of the fabric surface, thereby enhancing the antistatic performance of the fabric;

[0034] In the present invention, a hydrophobic antifouling layer is constructed on the outer fabric to improve the waterproof and antifouling properties of the fabric; an antifouling finishing solution is prepared with trialkoxy-terminated polydimethylsiloxane with low surface energy and composite titanium dioxide with photocatalytic activity; and the composite titanium dioxide is obtained by compounding molybdenum disulfide and hydrogenated titanium dioxide. The introduction not only improves the hydrophobic and antifouling properties of the fabric, but also synergistically enhances the wear resistance and antibacterial property of the fabric.

[0035] Moreover, the introduction of maleic anhydride-modified sericin in the antistatic finishing solution also synergistically enhances the binding force between trialkoxy-terminated polydimethylsiloxane, composite titanium dioxide and the fabric, enabling the fabric to achieve the effect of long-lasting antibacterial and antifouling.

[0036] Chitosan citrate is used to modify the waterborne polyurethane adhesive, and the modified waterborne polyurethane adhesive is used to compound the outer fabric and the inner fabric, greatly improving the antibacterial property of the fabric and prolonging the antibacterial persistence of the fabric. Detailed Embodiments

[0037] Next, in combination with the embodiments of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of 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.

[0038] It should be noted that if there are directional indications such as up, down, left, right, front, back... in the embodiments of the present invention, the directional indications are only used to explain the relative position relationship and movement conditions between the following components in a specific posture. If the specific posture changes, the directional indications will also change accordingly. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the fact that those of ordinary skill in the art can implement them. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0039] The technical solution of the present invention will be further described in detail below in conjunction with specific embodiments. It should be understood that the following embodiments are only used to explain the present invention and are not used to limit the present invention.

[0040] Example 1

[0041] A preparation process for a wear-resistant, tear-resistant, and antistatic fabric includes the following steps:

[0042] S1: Mix and weave cotton fibers and nylon 66 yarns as the warp, and mix and weave cotton fibers, T400 composite fibers, spandex fibers, and high molecular weight polyethylene as the weft, then knit flat, dye, and shape to obtain the outer fabric base cloth;

[0043] In terms of mass percentage, the composition of the outer fabric base cloth is: 67% cotton fibers, 13% nylon 66 yarns, 15% high molecular weight polyethylene, 3% T400 composite fibers, and 2% spandex fibers;

[0044] S2: Immerse the outer fabric base cloth in a hydroxylation modification solution to obtain a surface hydroxylation modified base cloth;

[0045] The composition of the hydroxylation modification solution is: using deionized water as the solvent, with the mass concentration of NaOH being 10 g / L and the mass concentration of cetyltrimethylammonium bromide being 3 g / L; the working conditions of the immersion treatment in step S2 are: temperature 85°C, time 1 h;

[0046] S3: Modify the surface of the surface hydroxylation modified base cloth with maleic anhydride to obtain a surface vinylated base cloth;

[0047] The mass ratio of the surface hydroxylation modified base cloth to maleic anhydride is 3:1, the system pH is 7.2, the bath ratio is 1:10, and the reaction time is 9 h;

[0048] S4: Immerse the surface vinylated base cloth in an antistatic finishing solution, add 0.1 g of photoinitiator Irgacure2959, and irradiate under the condition of introducing nitrogen. The working conditions of the irradiation are: irradiating treatment at 365 nm for 10 min; take it out and dry to obtain an antistatic base cloth;

[0049] The preparation of the antistatic finishing solution includes the following steps:

[0050] Mix 10 g of raw silk, 0.1 g of sodium carbonate, and 200 mL of deionized water, keep it warm at 95°C for 4 h, cool it, dialyze it in deionized water for 48 h, add 80 g of maleic anhydride and stir, adjust the pH to 7, and keep it warm at 0°C for 5 h to obtain the antistatic finishing solution;

[0051] S5: Immerse the antistatic base cloth in a stain-proof finishing solution, take it out and dry to obtain the outer fabric;

[0052] The preparation of the antifouling finishing liquid includes the following steps:

[0053] 1) Mix 4 g of titanium dioxide and 1.5 g of sodium borohydride and grind them for 20 min. Under an argon atmosphere, heat from 25 °C to 300 °C at a rate of 10 °C / min, then keep the temperature for 30 min, cool down, wash with deionized water and absolute ethanol, and dry to obtain hydrogenated titanium dioxide;

[0054] 2) Mix 100 mg of hydrogenated titanium dioxide, 30 mg of molybdenum disulfide, and 60 mL of deionized water, stir ultrasonically for 20 min, transfer to a reaction kettle with a polytetrafluoroethylene inner lining, keep at 95 °C for 10 h, centrifuge, wash, and dry to obtain composite titanium dioxide;

[0055] 3) Mix 1 g of trialkoxy-terminated polydimethylsiloxane and 100 g of tetrahydrofuran, add 1 mL of hydrochloric acid and stir for 1 h; add 1 g of composite titanium dioxide and stir for 22 h to obtain a suspension liquid, which is the antifouling finishing liquid;

[0056] S6: The inner fabric is knitted polar fleece. The inner fabric and the outer fabric are compounded with a modified waterborne polyurethane adhesive to obtain a wear-resistant, tear-resistant, and antistatic fabric;

[0057] The preparation of the modified waterborne polyurethane adhesive includes the following steps:

[0058] (1) Mix citric acid and chitosan in a molar ratio of 2:1, stir for 20 min, centrifuge, wash, and dry to obtain citric acid-modified chitosan;

[0059] (2) Mix 3 g of citric acid-modified chitosan and 17 mL of deionized water, disperse ultrasonically for 1 h, adjust the pH value to 8.8, add 6 g of waterborne polyurethane adhesive and mix, and stir at 15 °C for 2 h to obtain the modified waterborne polyurethane adhesive.

[0060] Example 2

[0061] A preparation process of a wear-resistant, tear-resistant, and antistatic fabric includes the following steps:

[0062] S1: Mix cotton fibers and nylon 66 yarns and weave them as the warp, and mix cotton fibers, T400 composite fibers, spandex fibers, and high molecular weight polyethylene and weave them as the weft, weave them flat, dye, and shape to obtain the outer fabric base cloth;

[0063] By mass percentage, the composition of the outer fabric base cloth is: 67% cotton fibers, 13% nylon 66 yarns, 15% high molecular weight polyethylene, 3% T400 composite fibers, 2% spandex fibers;

[0064] S2: Immerse the outer fabric base fabric in the hydroxylation modification solution to obtain a surface hydroxylation-modified base fabric;

[0065] The composition of the hydroxylation modification solution is: using deionized water as the solvent, where the mass concentration of NaOH is 15 g / L and the mass concentration of cetyltrimethylammonium bromide is 5 g / L; the working conditions of the immersion treatment in step S2 are: temperature 88 °C, time 1 h;

[0066] S3: Perform surface modification on the surface hydroxylation-modified base fabric with maleic anhydride to obtain a surface vinylated base fabric;

[0067] The mass ratio of the surface hydroxylation-modified base fabric to maleic anhydride is 3:1, the system pH is 8, the bath ratio is 1:10, and the reaction time is 9.5 h;

[0068] S4: Immerse the surface vinylated base fabric in the antistatic finishing solution, add the photoinitiator Irgacure2959, and irradiate under the condition of introducing nitrogen. The working conditions of the irradiation are: irradiating treatment at 365 nm for 12 min; take it out and dry to obtain the antistatic base fabric;

[0069] The preparation of the antistatic finishing solution includes the following steps:

[0070] Mix 10 g of raw mulberry silk, 0.1 g of sodium carbonate, and 200 mL of deionized water, keep it warm at 98 °C for 3.5 h, cool it, dialyze it in deionized water for 48 h, add 80 g of maleic anhydride and stir, adjust the pH to 7.5, and keep it warm at 2 °C for 5.5 h to obtain the antistatic finishing solution;

[0071] S5: Immerse the antistatic base fabric in the stain-proof finishing solution, take it out and dry to obtain the outer fabric;

[0072] The preparation of the stain-proof finishing solution includes the following steps:

[0073] 1) Mix 4 g of titanium dioxide and 1.5 g of sodium borohydride and grind them for 25 min. Under an argon atmosphere, heat from 25 °C to 300 °C at a rate of 10 °C / min, then keep it warm for 35 min, cool it, wash it with deionized water and absolute ethanol, and dry it to obtain hydrogenated titanium dioxide;

[0074] 2) Mix 100 mg of hydrogenated titanium dioxide, 30 mg of molybdenum disulfide, and 60 mL of deionized water, stir ultrasonically for 25 min, transfer it to a reaction kettle with a polytetrafluoroethylene inner lining, keep it at 98 °C for 9.5 h, centrifuge, wash, and dry to obtain composite titanium dioxide;

[0075] 3) Mix 1 g of trialkoxy-terminated polydimethylsiloxane and 100 g of tetrahydrofuran, add 1 mL of hydrochloric acid and stir for 1 h; add 1 g of composite titanium dioxide and stir for 23 h to obtain a suspension liquid, which is the stain-proof finishing solution;

[0076] S6: The inner fabric is knitted polar fleece. The inner fabric and the outer fabric are compounded with a modified waterborne polyurethane adhesive to obtain a wear-resistant, tear-resistant and antistatic fabric;

[0077] The preparation of the modified waterborne polyurethane adhesive comprises the following steps:

[0078] (1) Citric acid and chitosan with a molar ratio of 2:1 are mixed, stirred for 25 min, centrifuged, washed and dried to obtain citric acid-modified chitosan;

[0079] (2) 3 g of citric acid-modified chitosan and 17 mL of deionized water are mixed, ultrasonically dispersed for 1.5 h, the pH value is adjusted to 9, 6 g of waterborne polyurethane adhesive is added and mixed, and stirred at 20 °C for 1.5 h to obtain the modified waterborne polyurethane adhesive.

[0080] Example 3

[0081] A preparation process of a wear-resistant, tear-resistant and antistatic fabric comprises the following steps:

[0082] S1: Cotton fibers and nylon 66 yarns are mixed and woven as the warp, and cotton fibers, T400 composite fibers, spandex fibers and high molecular weight polyethylene are mixed and woven as the weft, woven flat, dyed and shaped to obtain the outer fabric base cloth;

[0083] By mass percentage, the composition of the outer fabric base cloth is: 67% cotton fiber, 13% nylon 66 yarn, 15% high molecular weight polyethylene, 3% T400 composite fiber, 2% spandex fiber;

[0084] S2: The outer fabric base cloth is impregnated in a hydroxylation modification solution to obtain a surface hydroxylation modified base cloth;

[0085] The composition of the hydroxylation modification solution is: using deionized water as the solvent, wherein the mass concentration of NaOH is 20 g / L and the mass concentration of cetyltrimethylammonium bromide is 6 g / L; the working conditions of the impregnation treatment in step S2 are: temperature 90 °C, time 1 h;

[0086] S3: The surface hydroxylation modified base cloth is surface-modified with maleic anhydride to obtain a surface vinylated base cloth;

[0087] The mass ratio of the surface hydroxylation modified base cloth to maleic anhydride is 3:1, the system pH is 8.2, the bath ratio is 1:10, and the reaction time is 10 h;

[0088] S4: Immerse the surface vinylated base fabric in the antistatic finishing solution, add a photoinitiator, and irradiate it under the condition of introducing nitrogen. The working conditions of the irradiation are: irradiate for 15 min at 365 nm; take it out and dry it to obtain the antistatic base fabric;

[0089] The preparation of the antistatic finishing solution includes the following steps:

[0090] Mix 10 g of raw mulberry silk, 0.1 g of sodium carbonate, and 200 mL of deionized water, keep it warm at 100 °C for 3 h, cool it, dialyze it in deionized water for 48 h, add 80 g of maleic anhydride and stir, adjust the pH to 8, and keep it warm at 5 °C for 6 h to obtain the antistatic finishing solution;

[0091] S5: Immerse the antistatic base fabric in the stain-proof finishing solution, take it out and dry it to obtain the outer fabric;

[0092] The preparation of the stain-proof finishing solution includes the following steps:

[0093] 1) Mix 4 g of titanium dioxide and 1.5 g of sodium borohydride and grind them for 30 min. Under an argon atmosphere, heat them from 25 °C to 300 °C at a rate of 10 °C / min, then keep it warm for 40 min, cool it, wash it with deionized water and absolute ethanol, and dry it to obtain hydrogenated titanium dioxide;

[0094] 2) Mix 100 mg of hydrogenated titanium dioxide, 30 mg of molybdenum disulfide, and 60 mL of deionized water, stir them ultrasonically for 30 min, transfer them to a reaction kettle with a polytetrafluoroethylene inner lining, keep it at 100 °C for 9 h, centrifuge, wash, and dry to obtain composite titanium dioxide;

[0095] 3) Mix 1 g of trialkoxy-terminated polydimethylsiloxane and 100 g of tetrahydrofuran, add 1 mL of hydrochloric acid and stir for 1 h; add 1 g of composite titanium dioxide and stir for 24 h to obtain a suspension liquid, which is the stain-proof finishing solution;

[0096] S6: The inner fabric is knitted polar fleece. The inner fabric and the outer fabric are compounded with a modified waterborne polyurethane adhesive to obtain a wear-resistant, tear-resistant, and antistatic fabric;

[0097] The preparation of the modified waterborne polyurethane adhesive includes the following steps:

[0098] (1) Mix citric acid and chitosan in a molar ratio of 2:1, stir for 30 min, centrifuge, wash, and dry to obtain citric acid-modified chitosan;

[0099] (2) Mix 3 g of citric acid-modified chitosan and 17 mL of deionized water, disperse them ultrasonically for 2 h, adjust the pH value to 9.2, add 6 g of waterborne polyurethane adhesive and mix, and stir at 25 °C for 1 h to obtain the modified waterborne polyurethane adhesive.

[0100] Comparative Example 1

[0101] Taking Example 3 as the control group, no surface hydroxylation was carried out, and other processes were normal.

[0102] Comparative Example 2

[0103] Taking Example 3 as the control group, no surface vinylation was carried out, and other processes were normal.

[0104] Comparative Example 3

[0105] Taking Example 3 as the control group, no light irradiation was carried out, and other processes were normal.

[0106] Comparative Example 4

[0107] Taking Example 3 as the control group, no trialkoxysilyl-terminated polydimethylsiloxane was added, and other processes were normal.

[0108] Comparative Example 5

[0109] Taking Example 3 as the control group, titanium dioxide was used to replace the composite titanium dioxide, and other processes were normal.

[0110] Comparative Example 6

[0111] Taking Example 3 as the control group, chitosan was used to replace the citric acid-modified chitosan, and other processes were normal.

[0112] Raw materials used and their sources:

[0113] Cotton fiber (long-staple cotton): Shaanxi Tianmian Cotton Industry Co., Ltd.; Nylon 66 yarn: Zhejiang Jiahua Special Nylon Co., Ltd.; T400 composite fiber: DuPont, USA; Spandex fiber: 4.44 tex chlorine-resistant Lycra, Invista; High molecular weight polyethylene (S09, Mw = 2×10 6):Shanghai Research Institute of Chemical Industry; NaOH, absolute ethanol, sodium carbonate, tetrahydrofuran, hydrochloric acid, sodium borohydride, analytical grade: Sinopharm Chemical Reagent Co., Ltd.; cetyltrimethylammonium bromide H811115, maleic anhydride M813920, molybdenum disulfide M888682, pyridine P816288, citric acid C805019, chitosan C804730, waterborne polyurethane adhesive A909856: Shanghai Macklin Biochemical Technology Co., Ltd.; photoinitiator Irgacure2959: Shanghai Aladdin Reagent Co., Ltd.; mulberry silk (5A grade mulberry silk): Xinyuan Cocoon & Silk Group Co., Ltd.; titanium dioxide (P25): Degussa Co., Ltd., Germany; trialkoxysilyl-terminated polydimethylsiloxane (Di, analytical grade): Guangzhou Jianyi Co., Ltd.; knitted polar fleece: the loop yarn is 11.1 tex 100D / 144F polyester drawn texturing yarn, the base yarn is 22.2 tex (200D) / 50F polyester drawn texturing yarn, the pile height is 8 mm, and the weight per square meter is 160 g.

[0114] Performance testing: The samples of Examples 1 - 3 and Comparative Examples 4 - 6 were tested. The abrasion resistance was tested according to GB / T 21196.2 - 2007. Higher than 250,000 times is excellent, and 200,000 - 250,000 times is qualified; the breaking strength was tested according to GB / T 3923.2 - 2013; the tearing strength was tested according to GB / T 3917.1 - 2009, and the contact angle was tested with 2 μL water droplets; the antibacterial test strain was Escherichia coli; the antibacterial durability of the fabric was tested according to the reference standard GB / T 20944.3 - 2008. By performing 500 standard washes on the test samples, the antibacterial rate against Escherichia coli was measured to observe its antibacterial durability; as shown in Table 1 respectively;

[0115] Table 1

[0116]

[0117]

[0118] The present invention provides a wear-resistant, tear-resistant, antistatic fabric and its preparation process. The warp of the prepared fabric is woven by mixing cotton fiber and nylon 66 yarn, and the weft is woven by mixing cotton fiber, T400 composite fiber, spandex fiber and high molecular weight polyethylene. Through process and composition optimization, the prepared fabric has excellent wear resistance, tear resistance, antistatic property and antibacterial property, greatly improving the functionality and comfort of the fabric.

[0119] The antibacterial rates of the fabrics of Examples 1 - 3 against Escherichia coli are all above 99%, and the antibacterial durability is high.

[0120] The warp yarns of the prepared outer fabric are made of a blended textile of cotton fibers and nylon 66 yarns to improve the wear resistance of the fabric, and the weft yarns of the outer fabric are made of a blended textile of cotton fibers, T400 composite fibers, spandex fibers and high molecular weight polyethylene to improve the tear resistance of the fabric; the prepared inner fabric is made of conductive filament polar fleece to synergistically improve the antistatic and warm-keeping functions of the fabric; a modified water-based polyurethane adhesive with antibacterial function is used to laminate the inner fabric and the outer fabric to improve the antibacterial property of the fabric.

[0121] Refer to FZ / T 01042-1996 "Determination of Electrostatic Properties of Textile Materials - Half-life of Static Voltage" to measure the antistatic property. Use a fabric antistatic property tester to discharge the sample on a rotating metal platform at 10 kV high voltage for 30 s, and record the half-life; as shown in Table 2;

[0122]

[0123] Table 2

[0124] By comparing Example 3 with Comparative Example 1, Comparative Example 2, and Comparative Example 3, it can be seen that in the present invention, through the treatment of the outer fabric base cloth and sericin, sericin is introduced to improve the antistatic property of the fabric; the introduced sericin has good hydrophilicity and biological safety, improving the comfort of the fabric. First, the outer fabric base cloth is subjected to alkali weight reduction treatment to introduce hydroxyl reaction sites on the surface, and then maleic anhydride is grafted to obtain a vinylated outer fabric base cloth; and vinyl is introduced into sericin to enhance its reaction activity. Under the action of photocatalysis, sericin is grafted onto the fabric surface through free radical polymerization, improving the hydrophilicity of the fabric surface, thereby improving the antistatic property of the fabric;

[0125] By comparing Example 3 with Comparative Example 4 and Comparative Example 5, it can be seen that in the present invention, a hydrophobic antifouling layer is constructed on the outer fabric, thereby improving the waterproof and antifouling properties of the fabric; an antifouling finishing liquid is prepared with trialkoxy-terminated polydimethylsiloxane with low surface energy and composite titanium dioxide with photocatalytic activity; and the composite titanium dioxide is obtained by compounding molybdenum disulfide and hydrogenated titanium dioxide. The introduction not only improves the hydrophobic antifouling property of the fabric, but also synergistically improves the wear resistance and antibacterial property of the fabric.

[0126] By comparing Example 3 with Comparative Example 6, it can be seen that citric acid-modified chitosan is used to modify the water-based polyurethane adhesive, and the modified water-based polyurethane adhesive is used to laminate the outer fabric and the inner fabric, greatly improving the antibacterial property of the fabric and prolonging the antibacterial persistence of the fabric.

[0127] The above are only the preferred embodiments of the present invention, and do not limit the patent scope of the present invention. All equivalent structural transformations made using the description of the present invention under the inventive concept of the present invention, or direct / indirect applications in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A preparation process for a wear-resistant, tear-resistant and antistatic fabric, characterized in that, It includes the following steps: S1: Blending cotton fibers with nylon 66 yarns as warp threads, and blending cotton fibers, T400 composite fibers, spandex fibers and high molecular weight polyethylene as weft threads, weaving smoothly, dyeing and shaping to obtain the base fabric of the outer fabric; S2: Immersing the base fabric of the outer fabric in a hydroxylation modification solution to obtain a surface hydroxylation modified base fabric; S3: Surface-modifying the surface hydroxylation modified base fabric with maleic anhydride to obtain a surface vinylated base fabric; S4: Immersing the surface vinylated base fabric in an antistatic finishing solution, adding a photocuring agent, irradiating with light under the condition of introducing nitrogen, taking out and drying to obtain an antistatic base fabric; S5: Immersing the antistatic base fabric in a stain-proof finishing solution, taking out and drying to obtain the outer fabric; S6: The inner fabric is knitted polar fleece. The inner fabric and the outer fabric are compounded with a modified waterborne polyurethane adhesive to obtain a wear-resistant, tear-resistant and antistatic fabric; The preparation of the antistatic finishing solution includes the following steps: Mixing mulberry silk, sodium carbonate and deionized water, keeping warm at 95 - 100 °C for 3 - 4 h, cooling, dialyzing in deionized water for 48 h, adding maleic anhydride and stirring, adjusting the pH to 7 - 8, and keeping warm at 0 - 5 °C for 5 - 6 h to obtain the antistatic finishing solution; The preparation of the stain-proof finishing solution includes the following steps: 1) Mixing titanium dioxide and sodium borohydride and grinding for 20 - 30 min. Under an argon atmosphere, heating from 25 °C to 300 °C at a rate of 10 °C / min, then keeping warm for 30 - 40 min, cooling, washing with deionized water and absolute ethanol, and drying to obtain hydrogenated titanium dioxide; 2) Mixing hydrogenated titanium dioxide, molybdenum disulfide and deionized water, ultrasonically stirring for 20 - 30 min, transferring to a reaction kettle with a polytetrafluoroethylene lining, maintaining at 95 - 100 °C for 9 - 10 h, centrifuging, washing and drying to obtain composite titanium dioxide; 3) Mixing trialkoxysilyl-terminated polydimethylsiloxane and tetrahydrofuran, adding hydrochloric acid and stirring for 1 h; adding composite titanium dioxide and stirring for 22 - 24 h to obtain a suspension liquid, namely the stain-proof finishing solution; In the preparation of the stain-proof finishing solution, the mass ratio of trialkoxysilyl-terminated polydimethylsiloxane to composite titanium dioxide is 1:1; The preparation of the modified waterborne polyurethane adhesive includes the following steps: (1) Mixing citric acid and chitosan with a molar ratio of 2:1, stirring for 20 - 30 min, centrifuging, washing and drying to obtain citric acid-modified chitosan; (2) Mixing citric acid-modified chitosan and deionized water, ultrasonically dispersing for 1 - 2 h, adjusting the pH value to 8.8 - 9.2, adding a waterborne polyurethane adhesive and mixing, and stirring at 15 - 25 °C for 1 - 2 h to obtain the modified waterborne polyurethane adhesive.

2. The preparation process of a wear-resistant, tear-resistant and antistatic fabric according to claim 1, characterized in that, By mass percentage, the composition of the base fabric of the outer fabric is: 65 - 70% cotton fibers, 10 - 15% nylon 66 yarns, 10 - 20% high molecular weight polyethylene, 2 - 5% T400 composite fibers, 1 - 5% spandex fibers.

3. The preparation process of a wear-resistant, tear-resistant, and antistatic fabric according to claim 1, characterized in that, In step S2, the composition of the hydroxylation modification solution is as follows: using deionized water as the solvent, wherein the mass concentration of NaOH is 10 - 20 g / L, and the mass concentration of cetyltrimethylammonium bromide is 3 - 6 g / L; the working conditions of the impregnation treatment in step S2 are: temperature 85 - 90 °C, time 1 h.

4. The preparation process of a wear-resistant, tear-resistant and antistatic fabric according to claim 1, characterized in that, In step S3, the mass ratio of the surface-hydroxylated modified base fabric to maleic anhydride is 3:1, the system pH is 7.2 - 8.2, the bath ratio is 1:10, and the reaction time is 9 - 10 h.

5. The preparation process of a wear-resistant, tear-resistant and antistatic fabric according to claim 1, characterized in that, In step S4, the working conditions of the light irradiation are: irradiation treatment at 365 nm for 10 - 15 min.

6. A wear-resistant, tear-resistant, and antistatic fabric, characterized in that, Prepared by the process according to any one of claims 1 - 5.

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