Super-strong wear-resistant, waterproof, moisture-permeable and antistatic fabric and preparation process thereof

Abstract

The invention relates to the field of fabrics, in particular to a super-strong wear-resistant, waterproof, moisture-permeable and antistatic fabric and a preparation process thereof.The super-strong wear-resistant, waterproof, moisture-permeable and antistatic fabric is characterized in that nylon yarns serve as warp yarns, the nylon yarns and conductive yarns are doubled to serve as weft yarns, the warp yarns and the weft yarns are interwoven to form surface cloth, a waterproof, moisture-permeable and breathable EVENT film serves as a middle layer, and base cloth is 20D warp-knitted kott mesh cloth; laminating the surface layer, the middle layer and the base cloth in sequence by adopting a composite waterborne polyurethane adhesive; the preparation method comprises the following steps: taking epoxy polyol, polytetramethylene ether glycol, hexamethylene diisocyanate and isophorone diisocyanate as raw materials, taking 1, 4-butanediol as a chain extender to obtain a prepolymer, then taking (5-amino-1, 3, 3-trimethylcyclohexyl)-methylamino propionic acid triethylamine salt as a hydrophilic monomer, taking modified tannic acid as an internal cross-linking agent, adding water for emulsification, and carrying out vacuum drying, so as to obtain the waterborne polyurethane resin. The composite waterborne polyurethane emulsion is obtained.

Description

Technical Field

[0001] The invention relates to the technical field of fabrics, in particular to a super wear-resistant, waterproof, moisture-permeable and antistatic fabric and a preparation process thereof. Background Art

[0002] As living standards continue to improve, consumers are demanding more multifunctional and diversified everyday clothing. Functional apparel, such as jackets, is gradually gaining popularity. For daily commutes and hiking, waterproof and breathable jackets are a common choice. Consumers are also demanding more functional features, such as antistatic, antibacterial, and wear-resistant properties.

[0003] Most jackets on the market are made of conventional nylon or polyester materials bonded with PU film. However, conventional nylon or polyester materials have limited moisture conductivity and breathability, and multi-layer composites will reduce comfort. At the same time, static electricity generated during fabric production and use will cause problems such as dust adhesion, and the antibacterial effect is limited, so it is easy to produce odor in hot weather, which cannot meet people's growing clothing needs. Summary of the Invention

[0004] The purpose of the present invention is to provide a super wear-resistant, waterproof, breathable and antistatic fabric and a preparation process thereof, so as to solve the problems in the prior art.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0006] A preparation process of a super wear-resistant, waterproof, breathable and antistatic fabric comprises the following steps:

[0007] S1: Nylon yarn is used as the warp, nylon yarn and conductive yarn are used as the weft, and the warp and weft are interwoven to form the surface fabric;

[0008] S2: dyeing the face fabric with an acid dye to obtain a pretreated face fabric;

[0009] S3: Using EVENT membrane as the middle layer and Kete mesh as the base fabric, composite water-based polyurethane adhesive is used to bond the pre-treated surface fabric, middle layer and base fabric to obtain a super wear-resistant, waterproof, breathable and anti-static fabric.

[0010] Furthermore, the nylon yarn is 70D nylon CORDURA yarn, the conductive yarn is 20D white conductive yarn, and the knitted mesh is 20D warp knitted knitted mesh.

[0011] Furthermore, in the face fabric, the warp density is 158 threads / inch and the weft density is 96 threads / inch.

[0012] Furthermore, the working conditions of the dyeing process are: using an overflow dyeing machine and keeping the temperature at 110° C. for 40 minutes.

[0013] Furthermore, the raw material composition of the composite water-based polyurethane adhesive is, in parts by mass: 24-36 parts of composite water-based polyurethane emulsion, 1-5 parts of thickener, and 4-6 parts of water-based curing agent.

[0014] Furthermore, the preparation of the composite waterborne polyurethane emulsion comprises the following steps:

[0015] The preparation of composite waterborne polyurethane emulsion comprises the following steps:

[0016] The epoxy polyol and polytetramethylene ether glycol are mixed, heated to 128-130° C. and kept warm for 110-130 minutes, cooled to 58-60° C., hexamethylene diisocyanate, isophorone diisocyanate and dibutyltin dilaurate are added, heated to 78-82° C. and kept warm for 50-70 minutes, cooled to 60-70° C., acetone and 1,4-butanediol are added, kept warm for 1-2 hours, cooled to 28-32° C., isophorone diamine, (5-amino-1,3,3-trimethylcyclohexyl)-methylaminopropionic acid triethylamine salt and hydroxyethylethylenediamine are added in sequence, kept warm for 50-70 minutes, heated to 60-70° C., modified tannic acid is added, kept warm for 2-3 hours, cooled to 28-32° C., deionized water is added for emulsification, and the pressure is reduced to obtain a composite waterborne polyurethane emulsion with a solid content of 40-45%.

[0017] Further, the preparation of epoxy polyol comprises the following steps:

[0018] In a nitrogen atmosphere, polycaprolactone diol and maleic anhydride were mixed and heated to 78-82°C for reaction. When the acid value of the system was half of the initial acid value, epoxy resin E-51 and tetramethylammonium chloride were added and reacted at 108-110°C for 2h to obtain epoxy polyol.

[0019] Furthermore, the preparation of (5-amino-1,3,3-trimethylcyclohexyl)-methylaminopropionic acid triethylamine salt includes the following steps: under a nitrogen atmosphere, mixing isophorone diisocyanate and methyl acrylate, heating to 48-52° C. and keeping warm for 50-70 minutes, adding a mixed solution of triethylamine and deionized water, and keeping warm for 2-3 hours to obtain (5-amino-1,3,3-trimethylcyclohexyl)-methylaminopropionic acid triethylamine salt.

[0020] Furthermore, the preparation of modified tannic acid comprises the following steps:

[0021] (1) N,N-dimethyloctadecylamine, 4-(bromomethyl)phenylboronic acid, and methanol are mixed, kept at 68-72° C. for 22-24 hours, reduced pressure, and recrystallized 3-5 times using ethyl acetate and deionized water in a volume ratio of 1:1, and dried to obtain a quaternary ammonium salt antibacterial compound containing phenylboronic acid;

[0022] (2) Tannic acid and deionized water are mixed, and a quaternary ammonium salt antibacterial compound containing phenylboric acid and potassium hydroxide are added, and the mixture is kept warm at 18-35° C. for 2-3 hours, and filtered to obtain modified tannic acid.

[0023] Furthermore, the mass ratio of tannic acid to the quaternary ammonium antibacterial compound containing phenylboric acid is 1:0.2.

[0024] Compared with the prior art, the present invention has the following beneficial effects:

[0025] The present invention provides a super wear-resistant, waterproof, moisture-permeable and anti-static fabric and a preparation process thereof. Through process and component design, the surface layer has a 70D CORDURA classic plain texture, with a waterproof, moisture-permeable and breathable EVENT membrane as the middle layer, and a 20D warp-knitted mesh fabric bonded to the back. Composite water-based polyurethane adhesive is used to sequentially bond the surface layer, the middle layer and the base fabric, so that the prepared fabric has the functions of wear resistance, breathability, antibacterial, antistatic, waterproof and moisture-permeable, etc., and can meet the needs of changing outdoor environments.

[0026] 70D nylon CORDURA yarn is used as the warp, and 70D nylon CORDURA yarn and 20D white conductive yarn are used as the weft. The warp and weft are interwoven to form the surface fabric. Conductive yarn is added to the surface fabric to avoid the influence and interference of static electricity. By controlling the warp and weft density of the surface layer, the fabric is given excellent anti-deformation and anti-static properties; 20D warp-knitted mesh fabric is used as the base fabric to give the fabric a skin-friendly and comfortable feel; in order to improve the fitting strength of the surface layer, middle layer and base fabric, further improve the comfort of the fabric, and give the fabric excellent antibacterial properties, composite water-based polyurethane glue is used as adhesive to improve the various properties of the fabric.

[0027] Water-based polyurethane adhesive is a commonly used adhesive material with the advantages of safety, convenience, and low price. However, most common water-based polyurethane adhesives on the market have problems such as high temperature difference resistance and low mechanical strength. In addition, the existing water-based polyurethanes used on fabrics mostly use dimethylolpropionic acid as the hydrophilic monomer, but excessive use of dimethylolpropionic acid is not conducive to improving the water resistance of water-based polyurethane.

[0028] In order to reduce the influence of hydrophilic monomers on the prepolymerization reaction, the present invention uses epoxy polyol, polytetramethylene ether glycol, hexamethylene diisocyanate, and isophorone diisocyanate as raw materials, and uses 1,4-butanediol as a chain extender to obtain a prepolymer. Then, isophorone diamine and methyl acrylate are subjected to a Michael addition reaction, and then triethylamine is used for hydrolysis to obtain (5-amino-1,3,3-trimethylcyclohexyl)-methylaminopropionic acid triethylamine salt as a hydrophilic monomer. Modified tannic acid is used as an internal crosslinking agent, and water is added for emulsification to obtain a composite waterborne polyurethane emulsion.

[0029] In the existing market, epoxy resin is commonly used to cross-link and modify waterborne polyurethane to improve its adhesion and solvent resistance. However, direct use of epoxy resin for modification is prone to gelation. The present invention uses maleic anhydride, polycaprolactone diol, and epoxy resin as raw materials to synthesize epoxy polyols in a two-step process. Rigid segments are introduced into the polyurethane molecular chain without affecting flexibility, thereby improving the water resistance and thermal stability of the waterborne polyurethane. The modified tannic acid is synthesized from a linear long-chain tertiary amine compound N,N-dimethyloctadecylamine and 4-(bromomethyl)phenylboronic acid to form a quaternary ammonium salt antibacterial compound containing phenylboronic acid, which is then modified. The introduction of the modified tannic acid imparts excellent antibacterial properties to the composite waterborne polyurethane adhesive. At the same time, the modified tannic acid synergizes with the unique molecular structure of the epoxy polyol to construct a complex cross-linked network structure in the composite waterborne polyurethane adhesive, thereby improving the bonding strength, mechanical strength, and water resistance of the composite waterborne polyurethane adhesive, thereby improving various properties of the fabric. DETAILED DESCRIPTION

[0030] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions of the present invention. Obviously, the embodiments described 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 making creative efforts are within the scope of protection of the present invention.

[0031] It should be noted that if the embodiments of the present invention involve directional indications such as up, down, left, right, front, and back, such directional indications are only used to explain a specific posture, such as the relative position relationship between components, the movement status, etc. If the specific posture changes, the directional indication will also change accordingly. In addition, the technical solutions between the various embodiments may be combined with each other, but they must be based on the premise that they can be implemented by ordinary technicians in this field. If the combination of technical solutions is mutually inconsistent or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection claimed by the present invention.

[0032] The technical solutions of the present invention are further described in detail below with reference to specific embodiments. It should be understood that the following embodiments are merely used to explain the present invention and are not intended to limit the present invention.

[0033] Example 1: A process for preparing a super wear-resistant, waterproof, breathable and antistatic fabric, comprising the following steps:

[0034] S1: Nylon yarn is used as the warp, nylon yarn and conductive yarn are used as the weft, and the warp and weft are interwoven to form the surface fabric;

[0035] The nylon yarn is 70D nylon CORDURA yarn, the conductive yarn is 20D white conductive yarn, the warp density of the face fabric is 158 strands / inch, and the weft density is 96 strands / inch;

[0036] S2: dyeing the face fabric with an acid dye to obtain a pretreated face fabric;

[0037] The working conditions of dyeing treatment were as follows: using overflow dyeing machine, keeping temperature at 110°C for 40 min;

[0038] S3: Using EVENT membrane as the middle layer and 20D warp knitted mesh as the base fabric, composite water-based polyurethane adhesive is used to bond the pretreated surface fabric, middle layer, and base fabric to create a super wear-resistant, waterproof, breathable, and antistatic fabric.

[0039] The raw material composition of the composite water-based polyurethane adhesive is as follows: 24 parts of composite water-based polyurethane emulsion, 1 part of thickener, and 4 parts of water-based curing agent, calculated by mass.

[0040] The preparation of composite waterborne polyurethane emulsion comprises the following steps:

[0041] 6 g of epoxy polyol and 4 g of polytetramethylene ether glycol were mixed, heated to 128° C. and kept warm for 130 min, cooled to 58° C., 1.3 g of hexamethylene diisocyanate, 5.2 g of isophorone diisocyanate, and 3 drops of dibutyltin dilaurate were added, heated to 78° C. and kept warm for 70 min, cooled to 60° C., 8 mL of acetone and 0.2 g of 1,4-butanediol were added, kept warm for 1 h, cooled to 28° C., 0.2 g of isophorone diamine, 0.4 g of (5-amino-1,3,3-trimethylcyclohexyl)-methylaminopropionic acid triethylamine salt, and 0.1 g of hydroxyethylethylenediamine were added in sequence, kept warm for 50 min, heated to 60° C., 0.5 g of modified tannic acid was added, kept warm for 2 h, cooled to 28° C., deionized water was added and emulsified for 1 h, and the pressure was reduced to obtain a composite waterborne polyurethane emulsion with a solid content of 43%;

[0042] The preparation of the epoxy polyol comprises the following steps:

[0043] Under nitrogen atmosphere, 1g polycaprolactone diol and 0.8g maleic anhydride were mixed and heated to 78°C for reaction. When the acid value of the system reached half of the initial acid value, 1.2g epoxy resin E-51 and 0.04g tetramethylammonium chloride were added and reacted at 108°C for 2h to obtain epoxy polyol.

[0044] The preparation of the (5-amino-1,3,3-trimethylcyclohexyl)-methylaminopropionic acid triethylamine salt comprises the following steps: under a nitrogen atmosphere, mixing 10 mmol of isophorone diisocyanate and 10 mmol of methyl acrylate, heating to 48° C. and keeping the temperature for 70 minutes, adding a mixed solution of 0.5 g of triethylamine and 10 mL of deionized water, and keeping the temperature for 2 hours to obtain the (5-amino-1,3,3-trimethylcyclohexyl)-methylaminopropionic acid triethylamine salt;

[0045] The preparation of the modified tannic acid comprises the following steps:

[0046] (1) 4.3 g of N,N-dimethyloctadecylamine, 4.3 g of 4-(bromomethyl)phenylboronic acid, and 50 mL of methanol were mixed, kept at 68°C for 24 h, reduced pressure, and recrystallized three times with ethyl acetate and deionized water in a volume ratio of 1:1, and dried to obtain a quaternary ammonium salt antibacterial compound containing phenylboronic acid;

[0047] (2) 1 g of tannic acid and 15 mL of deionized water were mixed, 0.2 g of a quaternary ammonium salt antibacterial compound containing phenylboronic acid and 12 mg of potassium hydroxide were added, and the mixture was kept at 18° C. for 3 h and filtered to obtain modified tannic acid.

[0048] Example 2: A process for preparing a super wear-resistant, waterproof, breathable and antistatic fabric, comprising the following steps:

[0049] S1: Nylon yarn is used as the warp, nylon yarn and conductive yarn are used as the weft, and the warp and weft are interwoven to form the surface fabric;

[0050] The nylon yarn is 70D nylon CORDURA yarn, the conductive yarn is 20D white conductive yarn, the warp density of the face fabric is 158 strands / inch, and the weft density is 96 strands / inch;

[0051] S2: dyeing the face fabric with an acid dye to obtain a pretreated face fabric;

[0052] The working conditions of dyeing treatment were as follows: using overflow dyeing machine, keeping temperature at 110°C for 40 min;

[0053] S3: Using EVENT membrane as the middle layer and 20D warp knitted mesh as the base fabric, composite water-based polyurethane adhesive is used to bond the pretreated surface fabric, middle layer, and base fabric to create a super wear-resistant, waterproof, breathable, and antistatic fabric.

[0054] The raw material composition of the composite water-based polyurethane adhesive is as follows: 30 parts of composite water-based polyurethane emulsion, 3 parts of thickener, and 5 parts of water-based curing agent, calculated by mass.

[0055] The preparation of composite waterborne polyurethane emulsion comprises the following steps:

[0056] Mix 6g epoxy polyol and 4g polytetramethylene ether glycol, heat to 129℃ and keep warm for 120min, cool to 59℃, add 1.3g hexamethylene diisocyanate, 5.2g isophorone diisocyanate, 3 drops of dibutyltin dilaurate, heat to 80℃ and keep warm for 60min, cool to 65℃, add 8mL acetone and 0.2g 1,4-butanediol, keep warm for 1-2h, cool to 2 8-32 ° C, add 0.2g isophorone diamine, 0.4g (5-amino-1,3,3-trimethylcyclohexyl)-methylaminopropionic acid triethylamine salt, and 0.1g hydroxyethylethylenediamine in sequence, keep warm for 60 minutes, raise the temperature to 65 ° C, add 0.5g modified tannic acid, keep warm for 2.5 hours, cool to 30 ° C, add deionized water and emulsify for 1 hour, reduce the pressure to obtain a composite waterborne polyurethane emulsion with a solid content of 43%;

[0057] The preparation of the epoxy polyol comprises the following steps:

[0058] Under nitrogen atmosphere, 1g polycaprolactone diol and 0.8g maleic anhydride were mixed and heated to 80°C for reaction. When the acid value of the system reached half of the initial acid value, 1.2g epoxy resin E-51 and 0.04g tetramethylammonium chloride were added and reacted at 109°C for 2h to obtain epoxy polyol.

[0059] The preparation of the (5-amino-1,3,3-trimethylcyclohexyl)-methylaminopropionic acid triethylamine salt comprises the following steps: under a nitrogen atmosphere, mixing 10 mmol of isophorone diisocyanate and 10 mmol of methyl acrylate, heating to 50° C. and keeping the temperature for 60 minutes, adding a mixed solution of 0.5 g of triethylamine and 10 mL of deionized water, and keeping the temperature for 2.5 hours to obtain the (5-amino-1,3,3-trimethylcyclohexyl)-methylaminopropionic acid triethylamine salt;

[0060] The preparation of the modified tannic acid comprises the following steps:

[0061] (1) 4.3 g of N,N-dimethyloctadecylamine, 4.3 g of 4-(bromomethyl)phenylboronic acid, and 50 mL of methanol were mixed, kept at 70°C for 23 h, reduced pressure, and recrystallized four times with ethyl acetate and deionized water in a volume ratio of 1:1, and dried to obtain a quaternary ammonium salt antibacterial compound containing phenylboronic acid;

[0062] (2) 1 g of tannic acid and 15 mL of deionized water were mixed, 0.2 g of a quaternary ammonium salt antibacterial compound containing phenylboronic acid and 12 mg of potassium hydroxide were added, and the mixture was kept at 25° C. for 2.5 h and filtered to obtain modified tannic acid.

[0063] Example 3: A process for preparing a super wear-resistant, waterproof, breathable and antistatic fabric, comprising the following steps:

[0064] S1: Nylon yarn is used as the warp, nylon yarn and conductive yarn are used as the weft, and the warp and weft are interwoven to form the surface fabric;

[0065] The nylon yarn is 70D nylon CORDURA yarn, the conductive yarn is 20D white conductive yarn, the warp density of the face fabric is 158 strands / inch, and the weft density is 96 strands / inch;

[0066] S2: dyeing the face fabric with an acid dye to obtain a pretreated face fabric;

[0067] The working conditions of dyeing treatment were as follows: using overflow dyeing machine, keeping temperature at 110°C for 40 min;

[0068] S3: Using EVENT membrane as the middle layer and 20D warp knitted mesh as the base fabric, composite water-based polyurethane adhesive is used to bond the pretreated surface fabric, middle layer, and base fabric to create a super wear-resistant, waterproof, breathable, and antistatic fabric.

[0069] The raw material composition of the composite water-based polyurethane adhesive is as follows: 36 parts of composite water-based polyurethane emulsion, 5 parts of thickener, and 6 parts of water-based curing agent, calculated by mass.

[0070] The preparation of composite waterborne polyurethane emulsion comprises the following steps:

[0071] 6 g of epoxy polyol and 4 g of polytetramethylene ether glycol were mixed, heated to 130° C. and kept warm for 110 min, cooled to 60° C., 1.3 g of hexamethylene diisocyanate, 5.2 g of isophorone diisocyanate, and 3 drops of dibutyltin dilaurate were added, heated to 82° C. and kept warm for 50 min, cooled to 70° C., 8 mL of acetone and 0.2 g of 1,4-butanediol were added, kept warm for 2 h, cooled to 32° C., 0.2 g of isophorone diamine, 0.4 g of (5-amino-1,3,3-trimethylcyclohexyl)-methylaminopropionic acid triethylamine salt, and 0.1 g of hydroxyethylethylenediamine were added in sequence, kept warm for 70 min, heated to 70° C., 0.5 g of modified tannic acid was added, kept warm for 3 h, cooled to 32° C., deionized water was added and emulsified for 1 h, and the pressure was reduced to obtain a composite waterborne polyurethane emulsion with a solid content of 43%;

[0072] The preparation of the epoxy polyol comprises the following steps:

[0073] Under nitrogen atmosphere, 1g polycaprolactone diol and 0.8g maleic anhydride were mixed and heated to 82°C for reaction. When the acid value of the system reached half of the initial acid value, 1.2g epoxy resin E-51 and 0.04g tetramethylammonium chloride were added and reacted at 110°C for 2h to obtain epoxy polyol.

[0074] The preparation of the (5-amino-1,3,3-trimethylcyclohexyl)-methylaminopropionic acid triethylamine salt comprises the following steps: under a nitrogen atmosphere, mixing 10 mmol of isophorone diisocyanate and 10 mmol of methyl acrylate, heating to 52° C. and keeping the temperature for 50 minutes, adding a mixed solution of 0.5 g of triethylamine and 10 mL of deionized water, and keeping the temperature for 3 hours to obtain the (5-amino-1,3,3-trimethylcyclohexyl)-methylaminopropionic acid triethylamine salt;

[0075] The preparation of the modified tannic acid comprises the following steps:

[0076] (1) 4.3 g of N,N-dimethyloctadecylamine, 4.3 g of 4-(bromomethyl)phenylboronic acid, and 50 mL of methanol were mixed, kept at 72°C for 22 h, reduced pressure, and recrystallized five times with ethyl acetate and deionized water in a volume ratio of 1:1, and dried to obtain a quaternary ammonium salt antibacterial compound containing phenylboronic acid;

[0077] (2) 1 g of tannic acid and 15 mL of deionized water were mixed, 0.2 g of a quaternary ammonium salt antibacterial compound containing phenylboronic acid and 12 mg of potassium hydroxide were added, and the mixture was kept at 35° C. for 2 h and filtered to obtain modified tannic acid.

[0078] Comparative Example 1: Example 3 was used as the control group, epoxy polyol was not added, and other processes were normal.

[0079] Comparative Example 2: Taking Example 3 as the control group, tannic acid was used to replace the modified tannic acid, and the other processes were normal.

[0080] Source of raw materials (for example only):

[0081] EVENT membrane: Yifan Textiles (Shanghai) Co., Ltd.; 70D nylon CORDURA yarn: INVISTA Fiber (Shanghai) Co., Ltd.; 20D white conductive yarn (20D / 3f): Shanghai Yizhanhui New Materials Co., Ltd.; 20D warp knitted mesh fabric KT-1333: Quanzhou Yuande Weaving Co., Ltd.; acid dye (acid violet 4BNS, Acid Violet 17): Ningbo Yinzhou Landi Chemical Co., Ltd.; thickener (sodium alginate, food grade): Zhengzhou Baili Chemical Products Co., Ltd.; maleic anhydride (99.5%): Jinan Jinhao Chemical Co., Ltd.; water-based curing agent XP2655: Guangdong Wengjiang Chemical Reagent Co., Ltd.; epoxy resin E-51 (99%): Jinan Chuangshi Chemical Co., Ltd.; polytetramethylene ether glycol P117874, hexamethylene diisocyanate H106723, isophorone diisocyanate I109582, dibutyl dilaurate Tin D100274, 1,4-butanediol B110391, isophorone diamine A104545, hydroxyethylethylenediamine H100512, polycaprolactone diol P303567, tetramethylammonium chloride T110540, methyl acrylate M100030, N,N-dimethyloctadecylamine N159433, 4-(bromomethyl)phenylboronic acid B165281, tannic acid T292288: Aladdin reagent; triethylamine, potassium hydroxide, acetone, methanol, ethyl acetate, analytical grade: purchased commercially.

[0082] Performance test: The fabrics prepared in the examples and comparative examples were subjected to performance tests:

[0083] Waterproofness: Tested according to GB / T4745-2012, the fabric is washed 20 times and then dried before testing. Level 5 is the best, level 4 is excellent, and level 3 is qualified.

[0084] Antibacterial persistence: Tested in accordance with GB / T20944.3-2008, using Gram-positive Staphylococcus aureus as the bacterial species. The antibacterial properties of the sample were tested after 50 standard washes.

[0085] Antistatic property: Tested with reference to GB / T12703.2-2021, the fabric was washed 30 times and then dried, and the surface charge density (μC / m 2 ) below 7 is considered qualified;

[0086] Water vapor permeability: Refer to GB / T12704.2-2009 Method B inverted cup method for testing. The fabric is washed 3 times before testing. The unit is g / m 2 ·24h, above 4000 is qualified;

[0087] Wear resistance: Tested according to GB / T21196.2-2007, with a pressure of 9kPa. 10,000 times without damage on the front side is considered qualified. The test results are shown in Table 1.

[0088] Table 1

[0089] Example 1 Example 2 Example 3 Comparative Example 1 Comparative Example 2 Waterproof grade 4 4 4 3 3 Antibacterial rate (%) 99.32 99.39 99.41 98.72 92.53 Antistatic properties qualified qualified qualified / / Moisture permeability qualified qualified qualified / / wear resistance qualified qualified qualified / /

[0090] The present invention provides a super wear-resistant, waterproof, moisture-permeable and anti-static fabric and a preparation process thereof. Through process and component design, the surface layer has a 70D CORDURA classic plain texture, with a waterproof, moisture-permeable and breathable EVENT membrane as the middle layer, and a 20D warp-knitted mesh fabric bonded to the back. Composite water-based polyurethane adhesive is used to sequentially bond the surface layer, the middle layer and the base fabric, so that the prepared fabric has the functions of wear resistance, breathability, antibacterial, antistatic, waterproof and moisture-permeable, etc., and can meet the needs of changing outdoor environments.

[0091] Comparing Example 3 with Comparative Example 1, in the existing market, epoxy resin is generally used to cross-link and modify waterborne polyurethane to improve its adhesion and solvent resistance. However, directly using epoxy resin for modification is prone to gelation problems. The present invention uses maleic anhydride, polycaprolactone diol, and epoxy resin as raw materials to synthesize epoxy polyols in a two-step process, thereby introducing rigid segments into the polyurethane molecular chain without affecting flexibility, thereby improving the water resistance and thermal stability of the waterborne polyurethane and enhancing the adhesion of the composite waterborne polyurethane adhesive.

[0092] Example 3 is compared with Comparative Example 2, in which the modified tannic acid is a quaternary ammonium salt antibacterial compound containing phenylboric acid synthesized by the linear long-chain tertiary amine compound N,N-dimethyloctadecylamine and 4-(bromomethyl)phenylboric acid, and then the tannic acid is modified. The introduction of the modified tannic acid gives the composite water-based polyurethane adhesive excellent antibacterial properties. At the same time, it cooperates with the unique molecular structure of the epoxy polyol to construct a complex cross-linked network structure in the composite water-based polyurethane adhesive, thereby improving the bonding strength, mechanical strength and water resistance of the composite water-based polyurethane adhesive, thereby improving the various properties of the fabric.

[0093] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structural transformations made using the present invention specification under the inventive concept of the present invention, or any direct / indirect application in other related technical fields, are included in the patent protection scope of the present invention.

Claims

1. A preparation process for a super wear-resistant, waterproof, breathable and antistatic fabric, characterized in that: The steps include: S1: Nylon yarn is used as the warp, nylon yarn and conductive yarn are used as the weft, and the warp and weft are interwoven to form the surface fabric; S2: dyeing the face fabric with an acid dye to obtain a pretreated face fabric; S3: Using EVENT membrane as the middle layer and Kete mesh as the base fabric, composite water-based polyurethane adhesive is used to bond the pre-treated surface fabric, middle layer and base fabric to obtain a super wear-resistant, waterproof, breathable and anti-static fabric.

2. The preparation process of a super wear-resistant, waterproof, breathable and antistatic fabric according to claim 1, characterized in that: The nylon yarn is 70D nylon CORDURA yarn, the conductive yarn is 20D white conductive yarn, and the knitted mesh is 20D warp knitted knitted mesh.

3. The preparation process of a super wear-resistant, waterproof, breathable and antistatic fabric according to claim 1, characterized in that: In the face fabric, the warp density is 158 threads / inch and the weft density is 96 threads / inch.

4. The preparation process of a super wear-resistant, waterproof, breathable and antistatic fabric according to claim 1, characterized in that: The working conditions of the dyeing process are: using an overflow dyeing machine and keeping the temperature at 110°C for 40 minutes.

5. The preparation process of a super wear-resistant, waterproof, breathable and antistatic fabric according to claim 1, characterized in that: The raw material composition of the composite water-based polyurethane adhesive is as follows: 24-36 parts of composite water-based polyurethane emulsion, 1-5 parts of thickener, and 4-6 parts of water-based curing agent in parts by mass.

6. The preparation process of a super wear-resistant, waterproof, breathable and antistatic fabric according to claim 1, characterized in that: The preparation of composite waterborne polyurethane emulsion comprises the following steps: The epoxy polyol and polytetramethylene ether glycol are mixed, heated to 128-130°C and kept warm for 110-130 minutes, cooled to 58-60°C, hexamethylene diisocyanate, isophorone diisocyanate and dibutyltin dilaurate are added, heated to 78-82°C and kept warm for 50-70 minutes, cooled to 60-70°C, acetone and 1,4-butanediol are added, kept warm for 1-2 hours, cooled to 28-32°C, isophorone diamine, (5-amino-1,3,3-trimethylcyclohexyl)-methylaminopropionic acid triethylamine salt and hydroxyethylethylenediamine are added in sequence and kept warm for 50-70 minutes, heated to 60-70°C, modified tannic acid is added, kept warm for 2-3 hours, cooled to 28-32°C, deionized water is added for emulsification, and the pressure is reduced to obtain a composite waterborne polyurethane emulsion.

7. The process for preparing a super wear-resistant, waterproof, breathable and antistatic fabric according to claim 6, characterized in that: The preparation of the epoxy polyol comprises the following steps: In a nitrogen atmosphere, polycaprolactone diol and maleic anhydride were mixed and heated to 78-82°C for reaction. When the acid value of the system was half of the initial acid value, epoxy resin E-51 and tetramethylammonium chloride were added and reacted at 108-110°C for 2h to obtain epoxy polyol.

8. The process for preparing a super wear-resistant, waterproof, breathable and antistatic fabric according to claim 6, characterized in that: The preparation of the (5-amino-1,3,3-trimethylcyclohexyl)-methylaminopropionic acid triethylamine salt comprises the following steps: Under a nitrogen atmosphere, isophorone diisocyanate and methyl acrylate are mixed, heated to 48-52°C and kept warm for 50-70 minutes, a mixed solution of triethylamine and deionized water is added, and kept warm for 2-3 hours to obtain (5-amino-1,3,3-trimethylcyclohexyl)-methylaminopropionic acid triethylamine salt.

9. The process for preparing a super wear-resistant, waterproof, breathable and antistatic fabric according to claim 6, characterized in that: The preparation of the modified tannic acid comprises the following steps: (1) N,N-dimethyloctadecylamine, 4-(bromomethyl)phenylboronic acid, and methanol are mixed, kept at 68-72° C. for 22-24 hours, reduced pressure, and recrystallized 3-5 times using ethyl acetate and deionized water in a volume ratio of 1:1, and dried to obtain a quaternary ammonium salt antibacterial compound containing phenylboronic acid; (2) Tannic acid and deionized water are mixed, and a quaternary ammonium salt antibacterial compound containing phenylboric acid and potassium hydroxide are added, and the mixture is kept warm at 18-35° C. for 2-3 hours, and filtered to obtain modified tannic acid.

10. A super wear-resistant, waterproof, breathable and antistatic fabric, characterized in that: The invention is prepared by the preparation process according to any one of claims 1 to 9.