Gold and silver thread fabric based on discontinuous aluminum layer and processing technology of gold and silver thread fabric

Abstract

The invention relates to the field of fabrics, in particular to a metallic yarn fabric based on a discontinuous aluminum layer and a processing technology thereof.The metallic yarn and polyester fibers are blended to serve as warps, the polyester fibers serve as wefts, the warps and the wefts are interwoven to obtain base cloth, the base cloth is subjected to discontinuous etching in the warp direction through etching liquid, and the pretreated base cloth is obtained; transferring the fabric into antibacterial finishing liquid for padding treatment to prepare the fabric. Modified waterborne polyurethane emulsion containing silicon and nitrogen elements is introduced into finishing liquid, polytetrahydrofuran glycol, hydroxyl-terminated polydimethylsiloxane and isophorone diisocyanate are used as raw materials, 2, 2-bis (hydroxymethyl) propionic acid is used as a hydrophilic chain extender, and cyanuric chloride derivative glycol based on menthol is used as a chain extender; the preparation method comprises the following steps: introducing nano zinc oxide as a finishing agent into a finishing liquid, firstly aminating the nano zinc oxide by using 3-aminopropyltriethoxysilane, then obtaining phytic acid modified nano zinc oxide by using electrostatic and hydrogen-bond interaction, and further grafting cyanuric chloride derivative diol based on menthol.

Description

Technical Field

[0001] The present invention relates to the technical field of fabrics, and specifically to a gold and silver wire fabric based on a discontinuous aluminum layer and its processing technology. Background Art

[0002] With the improvement of the social material level, people's pursuit of fabrics has developed towards diversification and functionality, and the requirements for the flame retardancy, antibacterial and other properties of fabrics are gradually increasing.

[0003] At the same time, the application of colored fibers in fabrics can greatly enrich the colors, such as gold and silver wires, etc. However, the storage and sales of textiles are gradually using radio frequency identification and RFID. Because ordinary gold and silver wire textiles have a shielding effect on electronic tags, they cannot use RFID for unmanned sales and rapid warehousing and outbound, which limits their scope of use. Summary of the Invention

[0004] The purpose of the present invention is to provide a gold and silver wire fabric based on a discontinuous aluminum layer and its processing technology 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 processing technology for a gold and silver wire fabric based on a discontinuous aluminum layer includes the following steps:

[0007] S1: Blending gold and silver wires with polyester fibers as warp threads, using polyester fibers as weft threads, and interweaving warp and weft to obtain a base fabric;

[0008] S2: Using an etching solution to perform discontinuous etching on the warp direction of the base fabric to obtain a pretreated base fabric;

[0009] S3: Preparing an antibacterial finishing solution with deionized water, composite nano zinc oxide, modified waterborne polyurethane emulsion, penetrant, and softener;

[0010] S4: Transferring the pretreated base fabric to the antibacterial finishing solution, performing padding treatment, and drying to obtain a gold and silver wire fabric based on a discontinuous aluminum layer.

[0011] Further, in the preparation of the base fabric, the blending ratio of gold and silver wires to polyester fibers in the warp threads is 30:70.

[0012] Further, the composition of the etching solution is: by mass percentage: phosphoric acid 60%, nitric acid 2%, citric acid 7%, glutamic acid 6%, ammonium dihydrogen phosphate 1%, 2-imidazolecarboxylic acid 1%, and the balance is deionized water.

[0013] Further, the composition of the antibacterial finishing liquid is as follows: using deionized water as the solvent, with composite nano-zinc oxide (1 - 5) g / L, modified aqueous polyurethane emulsion 25 g / L, penetrant 0.8 g / L, and softener 9 g / L.

[0014] Further, the working conditions for padding treatment are as follows: adopting a two-dip two-roll process, with an impregnation time of 80 - 90 s, a liquor pick-up rate of 90%, keeping warm at 80 °C for 30 min, and then heating up to 150 °C and keeping warm for 3 min.

[0015] Further, the preparation of the composite nano-zinc oxide includes the following steps:

[0016] (1) Mix deionized water and 3-aminopropyltriethoxysilane, adjust the pH value to 4 - 6, add nano-zinc oxide, perform ultrasonic treatment for 5 - 10 min, add phytic acid, adjust the pH value to 7, stir at 18 - 25 °C for 22 - 24 h, centrifuge, wash 3 - 5 times successively with absolute ethanol and deionized water, and dry to obtain phytic acid-modified nano-zinc oxide;

[0017] (2) Under a nitrogen atmosphere, mix dimethyl sulfoxide, dicyandiamide, urea, and menthol-based cyanuric chloride-derived diol, heat up to 95 - 100 °C, add the mixed solution of phytic acid-modified nano-zinc oxide and dimethyl sulfoxide, heat up to 108 - 112 °C and keep warm for 2 - 3 h, cool, filter by suction, wash with absolute ethanol, centrifuge, and dry to obtain the composite nano-zinc oxide.

[0018] Further, the preparation of the modified aqueous polyurethane emulsion includes the following steps:

[0019] Under a nitrogen atmosphere, mix polytetrahydrofuran ether glycol, hydroxyl-terminated polydimethylsiloxane, isophorone diisocyanate, and dibutyltin dilaurate, keep warm at 70 - 75 °C for 1 - 2 h, add 2,2-bis(hydroxymethyl)propionic acid and N,N-dimethylformamide, heat up to 78 - 82 °C and keep warm for 1 - 2 h, add menthol-based cyanuric chloride-derived diol and N,N-dimethylformamide and continue to keep warm for 1 - 2 h, cool down to 35 - 40 °C, add triethylamine for neutralization for 20 - 30 min, and add deionized water for emulsification to obtain the modified aqueous polyurethane emulsion.

[0020] Further, the mass ratio of polytetrahydrofuran ether glycol, hydroxyl-terminated polydimethylsiloxane, isophorone diisocyanate, 2,2-bis(hydroxymethyl)propionic acid, and menthol-based cyanuric chloride-derived diol is 10:1:6:0.8:1.

[0021] Further, the preparation of the menthol-based cyanuric chloride-derived diol includes the following steps:

[0022] A. Mix menthol, cyanuric chloride, and dichloromethane, add 2,4,6-trimethylpyridine, keep the temperature at 18 - 25 °C for 10 - 12 h, extract with deionized water 3 - 5 times, perform rotary evaporation, separate through a silica gel column using petroleum ether and dichloromethane with a volume ratio of 10:1 as the solvent, and dry to obtain a cyanuric chloride derivative based on menthol;

[0023] B. Mix the cyanuric chloride derivative based on menthol with dichloroethane, add a mixed solution of ethanolamine and dichloroethane, keep the temperature in an oil bath at 78 - 82 °C for 7 - 8 h, extract with deionized water 3 - 5 times, perform reduced-pressure rotary evaporation and drying to obtain a cyanuric chloride-derived diol based on menthol.

[0024] Compared with the prior art, the beneficial effects of the present invention are:

[0025] The present invention provides a gold-silver wire fabric based on a discontinuous aluminum layer and its processing technology. The gold-silver wire and polyester fiber are blended as the warp, and polyester fiber is used as the weft. The warp and weft are interwoven to obtain a base fabric. The base fabric is blocked by a printing screen, and the warp direction of the base fabric is discontinuously etched using an etching solution to obtain a pretreated base fabric, which is then transferred to an antibacterial finishing solution for padding treatment to prepare a flame-retardant and antibacterial gold-silver wire fabric based on a discontinuous aluminum layer, making it lose the shielding effect on electronic tags, which is beneficial to the popularization of the rapid storage and retrieval and unmanned sales of gold-silver wire fabrics.

[0026] In the present invention, polyester fiber with high strength is used as the weft of the base fabric to improve the anti-deformation ability of the fabric. In order to further solve the problems of low limiting oxygen index and high flammability of polyester fabrics, and the release of a large amount of toxic smoke during combustion, a modified waterborne polyurethane emulsion containing silicon and nitrogen elements is introduced into the finishing solution and coated on the fabric surface by the dipping method, endowing the fabric with good flame-retardant performance while ensuring its mechanical properties.

[0027] In the preparation of the modified waterborne polyurethane emulsion, polytetrahydrofuran ether glycol, hydroxyl-terminated polydimethylsiloxane, and isophorone diisocyanate are used as raw materials, and a silicon-containing polyurethane prepolymer is synthesized under the action of a catalyst, dibutyltin dilaurate. 2,2-bis(hydroxymethyl)propionic acid is used as a hydrophilic chain extender, the cyanuric chloride-derived diol based on menthol is used as a chain extender, triethylamine is used as a neutralizer, and deionized water is added for emulsification. The cyanuric chloride-derived diol based on menthol is first prepared by substituting one chlorine atom on cyanuric chloride with menthol to form a cyanuric chloride derivative based on menthol, and then continuing to undergo a substitution reaction with ethanolamine. Due to the antibacterial properties of menthol and the flame retardancy of the triazine ring, the modified waterborne polyurethane emulsion is endowed with excellent flame retardancy and antibacterial properties.

[0028] To further improve the antibacterial and ultraviolet resistance of fabrics, nano-zinc oxide was introduced as a finishing agent in the finishing solution. To improve the uniformity of nano-zinc oxide dispersion on the fabric surface, the nano-zinc oxide was modified. First, it was aminated with 3-aminopropyltriethoxysilane, and then, through electrostatic and hydrogen bond interactions, nano-zinc oxide modified with phytic acid was obtained, thereby further improving its flame retardancy. To address the problems of low phytic acid fixation rate and poor wash resistance of traditional fabrics, the nano-zinc oxide modified with phytic acid was further grafted with a cyanuric chloride-derived diol based on menthol. When it penetrated into the amorphous region of the fabric fibers, it could form an interpenetrating network structure with the cellulose macromolecular chains, constructing a complex three-dimensional network structure, thus greatly improving the flame retardancy and antibacterial durability of the fabric. Detailed implementation mode

[0029] The following will combine the embodiments of the present invention to clearly and completely describe the technical solutions in 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 in the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present invention.

[0030] It should be noted that if there are directional indications such as up, down, left, right, front, and back in the embodiments of the present invention, the directional indications are only used to explain the relative position relationship and movement conditions between 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.

[0031] The following further elaborates on the technical solutions of the present invention 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.

[0032] Example 1: A processing process for a gold and silver wire fabric based on a discontinuous aluminum layer includes the following steps:

[0033] S1: Blending gold and silver wires with polyester fibers as the warp and using polyester fibers as the weft, and interweaving the warp and weft to obtain a base fabric;

[0034] In the preparation of the base fabric, the blending ratio of gold and silver wires to polyester fibers in the warp is 30:70;

[0035] The warp density is 420 threads / 10 cm, and the weft density is 240 threads / 10 cm;

[0036] S2: Discontinuously etch the warp direction of the base fabric with an etching solution to obtain a pretreated base fabric;

[0037] The composition of the etching solution is as follows: by mass percentage: phosphoric acid 60%, nitric acid 2%, citric acid 7%, glutamic acid 6%, ammonium dihydrogen phosphate 1%, 2-imidazolecarboxylic acid 1%, and the balance is deionized water;

[0038] S3: Prepare an antibacterial finishing solution with deionized water, composite nano-zinc oxide, modified waterborne polyurethane emulsion, penetrant, and softener;

[0039] The composition of the antibacterial finishing solution is: using deionized water as the solvent, where composite nano-zinc oxide is 1 g / L, modified waterborne polyurethane emulsion is 25 g / L, penetrant is 0.8 g / L, and softener is 9 g / L;

[0040] The preparation of the composite nano-zinc oxide includes the following steps:

[0041] (1) Mix 20 mL of deionized water and 0.1 mL of 3-aminopropyltriethoxysilane, adjust the pH value to 4, add 50 mg of nano-zinc oxide, ultrasonically treat for 5 min, add 0.12 mL of phytic acid, adjust the pH value to 7, stir at 18 °C for 24 h, centrifuge, wash 3 times with anhydrous ethanol and deionized water in sequence, and dry to obtain phytic acid-modified nano-zinc oxide;

[0042] (2) Under a nitrogen atmosphere, mix 50 mL of dimethyl sulfoxide, 1 g of dicyandiamide, 2.5 g of urea, and 0.4 g of menthol-based cyanuric chloride-derived diol, heat to 95 °C, add a mixture of 0.3 g of phytic acid-modified nano-zinc oxide and 5 mL of dimethyl sulfoxide, heat to 108 °C and keep warm for 3 h, cool, filter by suction, wash with anhydrous ethanol, centrifuge, and dry to obtain composite nano-zinc oxide;

[0043] The preparation of the modified waterborne polyurethane emulsion includes the following steps:

[0044] Under a nitrogen atmosphere, mix 10 g of polytetrahydrofuran ether glycol, 1 g of hydroxyl-terminated polydimethylsiloxane, 6 g of isophorone diisocyanate, and 1 drop of dibutyltin dilaurate, keep warm at 70 °C for 2 h, add 0.8 g of 2,2-bis(hydroxymethyl)propionic acid and 8 mL of N,N-dimethylformamide, heat to 78 °C and keep warm for 2 h, add 1 g of menthol-based cyanuric chloride-derived diol and 7 mL of N,N-dimethylformamide and continue to keep warm for 1 h, cool to 35 °C, add triethylamine to neutralize for 30 min, and add deionized water to emulsify to obtain a modified waterborne polyurethane emulsion with a solid content of 25%;

[0045] The preparation of the menthol-based cyanuric chloride-derived diol includes the following steps:

[0046] A. Mix 3.5 g of menthol, 2.7 g of cyanuric chloride, and 50 mL of dichloromethane, add 3.3 mL of 2,4,6-trimethylpyridine, keep the temperature at 18 °C for 12 h, extract with deionized water three times, perform rotary evaporation, and separate and dry through a silica gel column using a petroleum ether:dichloromethane solvent with a volume ratio of 10:1 to obtain a cyanuric chloride derivative based on menthol;

[0047] B. Mix 3.5 g of the cyanuric chloride derivative based on menthol with 40 mL of dichloroethane, add a mixed solution of 3.1 g of ethanolamine and 20 mL of dichloroethane, keep the temperature in an oil bath at 78 °C for 8 h, extract with deionized water three times, perform reduced-pressure rotary evaporation and drying to obtain a cyanuric chloride-derived diol based on menthol;

[0048] S4: Transfer the pretreated base fabric to the antibacterial finishing solution, perform padding treatment, and dry to obtain a gold and silver wire fabric based on a discontinuous aluminum layer; the working conditions for the padding treatment are: adopt a two-dip two-roll process, the dipping time is 80 s, the liquor pickup rate is 90%, keep the temperature at 80 °C for 30 min, and raise the temperature to 150 °C and keep it for 3 min.

[0049] Example 2: A processing process for a gold and silver wire fabric based on a discontinuous aluminum layer, comprising the following steps:

[0050] S1: Blend the gold and silver wire with polyester fiber as the warp, and use polyester fiber as the weft, and interweave the warp and weft to obtain a base fabric;

[0051] In the preparation of the base fabric, the blending ratio of the gold and silver wire to the polyester fiber in the warp is 30:70;

[0052] The warp density is 420 ends / 10 cm, and the weft density is 240 ends / 10 cm;

[0053] S2: Perform discontinuous etching on the warp of the base fabric using an etching solution to obtain a pretreated base fabric;

[0054] The composition of the etching solution is: by mass percentage: phosphoric acid 60%, nitric acid 2%, citric acid 7%, glutamic acid 6%, ammonium dihydrogen phosphate 1%, 2-imidazolecarboxylic acid 1%, and the balance is deionized water;

[0055] S3: Prepare an antibacterial finishing solution using deionized water, composite nano-zinc oxide, modified waterborne polyurethane emulsion, penetrant, and softener;

[0056] The composition of the antibacterial finishing solution is: using deionized water as the solvent, wherein the composite nano-zinc oxide is 3 g / L, the modified waterborne polyurethane emulsion is 25 g / L, the penetrant is 0.8 g / L, and the softener is 9 g / L;

[0057] The preparation of the composite nano-zinc oxide includes the following steps:

[0058] (1) Mix 20 mL of deionized water and 0.1 mL of 3-aminopropyltriethoxysilane, adjust the pH value to 5, add 50 mg of nano-zinc oxide, ultrasonically treat for 8 min, add 0.12 mL of phytic acid, adjust the pH value to 7, stir at 20 °C for 23 h, centrifuge, wash 4 times with anhydrous ethanol and deionized water in sequence, and dry to obtain phytic acid-modified nano-zinc oxide;

[0059] (2) Under a nitrogen atmosphere, mix 50 mL of dimethyl sulfoxide, 1 g of dicyandiamide, 2.5 g of urea, and 0.4 g of menthol-based cyanuric chloride-derived diol, heat up to 98 °C, add a mixture of 0.3 g of phytic acid-modified nano-zinc oxide and 5 mL of dimethyl sulfoxide, heat up to 110 °C and keep warm for 2.5 h, cool, filter by suction, wash with anhydrous ethanol, centrifuge and dry to obtain composite nano-zinc oxide;

[0060] The preparation of the modified aqueous polyurethane emulsion includes the following steps:

[0061] Under a nitrogen atmosphere, mix 10 g of polytetrahydrofuran ether diol, 1 g of hydroxyl-terminated polydimethylsiloxane, 6 g of isophorone diisocyanate, and 1 drop of dibutyltin dilaurate, keep warm at 72 °C for 1.5 h, add 0.8 g of 2,2-bis(hydroxymethyl)propionic acid and 8 mL of N,N-dimethylformamide, heat up to 80 °C and keep warm for 1.5 h, add 1 g of menthol-based cyanuric chloride-derived diol and 7 mL of N,N-dimethylformamide and continue to keep warm for 1.5 h, cool down to 38 °C, add triethylamine to neutralize for 25 min, add deionized water for emulsification to obtain a modified aqueous polyurethane emulsion with a solid content of 25%;

[0062] The preparation of the menthol-based cyanuric chloride-derived diol includes the following steps:

[0063] A. Mix 3.5 g of menthol, 2.7 g of cyanuric chloride, and 50 mL of dichloromethane, add 3.3 mL of 2,4,6-trimethylpyridine, keep warm at 20 °C for 11 h, extract 4 times with deionized water, rotary evaporate, separate by silica gel column with a solvent of petroleum ether and dichloromethane in a volume ratio of 10:1 and dry to obtain a menthol-based cyanuric chloride derivative;

[0064] B. Mix 3.5 g of the menthol-based cyanuric chloride derivative and 40 mL of dichloroethane, add a mixed solution of 3.1 g of ethanolamine and 20 mL of dichloroethane, keep warm in an oil bath at 80 °C for 7.5 h, extract 4 times with deionized water, rotary evaporate under reduced pressure and dry to obtain the menthol-based cyanuric chloride-derived diol;

[0065] S4: Transfer the pretreated base fabric to the antibacterial finishing solution, perform padding treatment, and then dry it to obtain a gold and silver wire fabric based on a discontinuous aluminum layer. The working conditions for the padding treatment are as follows: adopt a two-dip two-roll process, with a dipping time of 85 s, a liquor pickup of 90%, keep it at 80 °C for 30 min, and then heat it up to 150 °C and keep it for 3 min.

[0066] Example 3: A processing technology for a gold and silver wire fabric based on a discontinuous aluminum layer, comprising the following steps:

[0067] S1: Blended spin the gold and silver wire with polyester fiber as the warp, and use polyester fiber as the weft, and interweave the warp and weft to obtain a base fabric;

[0068] In the preparation of the base fabric, the blending ratio of the gold and silver wire to the polyester fiber in the warp is 30:70;

[0069] The warp density is 420 ends / 10 cm, and the weft density is 240 ends / 10 cm;

[0070] S2: Use the etching solution to perform discontinuous etching on the warp of the base fabric to obtain a pretreated base fabric;

[0071] The composition of the etching solution is as follows: by mass percentage: phosphoric acid 60%, nitric acid 2%, citric acid 7%, glutamic acid 6%, ammonium dihydrogen phosphate 1%, 2-imidazolecarboxylic acid 1%, and the balance is deionized water;

[0072] S3: Prepare an antibacterial finishing solution with deionized water, composite nano zinc oxide, modified waterborne polyurethane emulsion, penetrant, and softener;

[0073] The composition of the antibacterial finishing solution is as follows: using deionized water as the solvent, wherein the composite nano zinc oxide is 5 g / L, the modified waterborne polyurethane emulsion is 25 g / L, the penetrant is 0.8 g / L, and the softener is 9 g / L;

[0074] The preparation of the composite nano zinc oxide includes the following steps:

[0075] (1) Mix 20 mL of deionized water and 0.1 mL of 3-aminopropyltriethoxysilane, adjust the pH value to 6, add 50 mg of nano zinc oxide, perform ultrasonic treatment for 10 min, add 0.12 mL of phytic acid, adjust the pH value to 7, stir at 25 °C for 22 h, centrifuge, wash 5 times with anhydrous ethanol and deionized water in sequence, and dry to obtain phytic acid-modified nano zinc oxide;

[0076] (2) Under a nitrogen atmosphere, 50 mL of dimethyl sulfoxide, 1 g of dicyandiamide, 2.5 g of urea, and 0.4 g of a chlorocyanuric acid-derived diol based on menthol were mixed, heated to 95 - 100 °C, and a mixture of 0.3 g of phytic acid-modified nano-zinc oxide and 5 mL of dimethyl sulfoxide was added. Then, the temperature was raised to 112 °C and held for 2 h. After cooling and suction filtration, it was washed with absolute ethanol, centrifuged, and dried to obtain composite nano-zinc oxide;

[0077] The preparation of the modified aqueous polyurethane emulsion includes the following steps:

[0078] Under a nitrogen atmosphere, 10 g of polytetrahydrofuran ether diol, 1 g of hydroxyl-terminated polydimethylsiloxane, 6 g of isophorone diisocyanate, and 1 drop of dibutyltin dilaurate were mixed, held at 75 °C for 1 h, 0.8 g of 2,2-bis(hydroxymethyl)propionic acid and 8 mL of N,N-dimethylformamide were added, heated to 82 °C and held for 1 h, 1 g of a chlorocyanuric acid-derived diol based on menthol and 7 mL of N,N-dimethylformamide were added and held for another 2 h. Then, the temperature was lowered to 40 °C, neutralized with triethylamine for 30 min, and emulsified with deionized water to obtain a modified aqueous polyurethane emulsion with a solid content of 25%;

[0079] The preparation of the chlorocyanuric acid-derived diol based on menthol includes the following steps:

[0080] A. 3.5 g of menthol, 2.7 g of cyanuric chloride, and 50 mL of dichloromethane were mixed, 3.3 mL of 2,4,6-trimethylpyridine was added, held at 25 °C for 10 h, extracted 5 times with deionized water, rotary evaporated, and separated and dried by passing through a silica gel column with a solvent of petroleum ether and dichloromethane in a volume ratio of 10:1 to obtain a chlorocyanuric acid derivative based on menthol;

[0081] B. 3.5 g of the chlorocyanuric acid derivative based on menthol and 40 mL of dichloroethane were mixed, a mixed solution of 3.1 g of ethanolamine and 20 mL of dichloroethane was added, held in an oil bath at 82 °C for 7 h, extracted 5 times with deionized water, rotary evaporated under reduced pressure, and dried to obtain a chlorocyanuric acid-derived diol based on menthol;

[0082] S4: Transfer the pretreated base fabric to the antibacterial finishing solution, impregnate and roll, and dry to obtain a gold and silver wire fabric based on a discontinuous aluminum layer; The working conditions for the impregnation and rolling treatment are: adopting a two-dip and two-roll process, the impregnation time is 90 s, the liquor pickup rate is 90%, held at 80 °C for 30 min, and heated to 150 °C and held for 3 min.

[0083] Comparative Example 1: Taking Example 3 as the control group, nano-zinc oxide was used to replace the composite nano-zinc oxide, and other processes were normal.

[0084] Comparative Example 2: Taking Example 3 as the control group, the chlorocyanuric acid-derived diol based on menthol was not prepared, and other processes were normal.

[0085] Raw material sources (for demonstration purposes only):

[0086] Gold and silver thread MH001 (75D): Dongyang Huamei Gold and Silver Thread Co., Ltd.; Polyester fiber DTY75D / 72F: Zhejiang Jinxia New Material Technology Co., Ltd.; Penetrant SF: Linyi Guoli Chemical Industry Co., Ltd.; Softener (99%, 666666-66-6): Wuhan Jiyesheng Chemical Co., Ltd.; 3-Aminopropyltriethoxysilane A107147, Nano zinc oxide Z112849, Phytate P580486, Dicyandiamide D100429, Urea U111897, Polytetrahydrofuran ether diol P117874, Hydroxyl-terminated polydimethylsiloxane P304442, Isophorone diisocyanate I109582, Dibutyltin dilaurate D100274, 2,2-Bis(hydroxymethyl)propionic acid B104539, Triethylamine T103285, Menthol M107060, Cyanuric chloride C118499, 2,4,6-Trimethylpyridine T108942, Ethanolamine E103802, 2-Imidazolecarboxylic acid H134313, Glutamic acid G121400: Aladdin Reagent; N,N-Dimethylformamide, Dichloromethane, Petroleum ether, Dichloromethane, Dimethyl sulfoxide, Phosphoric acid, Nitric acid, Citric acid, Ammonium dihydrogen phosphate, Dichloroethane, analytical grade, purchased from the market.

[0087] Performance testing: The fabrics prepared in the examples and comparative examples were subjected to performance testing:

[0088] Flame retardancy: The limiting oxygen index LOI was measured using an intelligent oxygen index meter. The test was carried out after 15 standard washes of the fabric, and the sample size was 15 cm × 5.8 cm;

[0089] Antibacterial property: Staphylococcus aureus was used as the test strain. The test was carried out after 15 standard washes of the fabric, and the antibacterial rate was detected with reference to GB / T20944.3-2008; The test results are shown in Table 1;

[0090] Table 1

[0091]

[0092] The present invention provides a gold and silver thread fabric based on a discontinuous aluminum layer and its processing technology. The gold and silver thread and polyester fiber are blended and used as the warp, and the polyester fiber is used as the weft. The warp and weft are interwoven to obtain a base fabric, which is transferred to an antibacterial finishing solution for padding treatment, and a flame-retardant and antibacterial gold and silver thread fabric based on a discontinuous aluminum layer is prepared, which loses the shielding effect on the electronic tag, facilitating the rapid warehousing and outbound of the gold and silver thread fabric and the promotion of unmanned sales.

[0093] Example 3 was compared with Comparative Example 1. To further improve the antibacterial and ultraviolet resistance of the fabric, nano-zinc oxide was introduced as a finishing agent in the finishing solution. To improve the uniformity of the dispersion of nano-zinc oxide on the fabric surface, the nano-zinc oxide was modified. First, it was aminated with 3-aminopropyltriethoxysilane, and then, by means of electrostatic and hydrogen bond interactions, nano-zinc oxide modified with phytic acid was obtained, thereby further improving its flame retardancy. To address the problems of the low phytic acid fixation rate and poor washability of traditional fabrics, the nano-zinc oxide modified with phytic acid was further grafted with a cyanuric chloride-derived diol based on menthol. When it penetrated into the amorphous region of the fabric fibers, it could form an interpenetrating network structure with the cellulose macromolecular chains, constructing a complex three-dimensional network structure, thereby greatly improving the flame retardancy and antibacterial durability of the fabric.

[0094] Example 3 was compared with Comparative Example 2. In the preparation of the modified aqueous polyurethane emulsion, polytetrahydrofuran ether diol, hydroxyl-terminated polydimethylsiloxane, and isophorone diisocyanate were used as raw materials, and a silicon-containing polyurethane prepolymer was synthesized under the action of the catalyst dibutyltin dilaurate. 2,2-Bis(hydroxymethyl)propionic acid was used as the hydrophilic chain extender, the cyanuric chloride-derived diol based on menthol was used as the chain extender, and triethylamine was used as the neutralizer. It was prepared by adding deionized water for emulsification. The cyanuric chloride-derived diol based on menthol was prepared by first substituting one chlorine atom on cyanuric chloride with menthol to generate a cyanuric chloride derivative based on menthol, and then continuing to carry out a substitution reaction with ethanolamine. Due to the antibacterial properties of menthol and the flame retardancy of the triazine ring, the modified aqueous polyurethane emulsion was given excellent flame retardancy and antibacterial properties.

[0095] The above are only the 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 processing technology for gold and silver thread fabric based on discontinuous aluminum layer, characterized in that: The steps include: S1: blending gold and silver yarn with polyester fiber as warp, and using polyester fiber as weft, interweaving the warp and weft to obtain a base fabric; S2: using an etching liquid to discontinuously etch the warp direction of the base fabric to obtain a pretreated base fabric; S3: preparing an antibacterial finishing liquid using deionized water, composite nano zinc oxide, modified waterborne polyurethane emulsion, penetrant, and softener; S4: The pretreated base fabric is transferred to the antibacterial finishing solution, padded, and dried to obtain a gold and silver thread fabric based on a discontinuous aluminum layer.

2. The processing technology of the gold and silver thread fabric based on the discontinuous aluminum layer according to claim 1 is characterized in that: In the preparation of the base fabric, the blending ratio of gold and silver thread and polyester fiber in the warp is 30:

70.

3. The processing technology of the gold and silver thread fabric based on the discontinuous aluminum layer according to claim 1 is characterized in that: The composition of the etching solution is as follows: by mass percentage: 60% phosphoric acid, 2% nitric acid, 7% citric acid, 6% glutamic acid, 1% diammonium phosphate, 1% 2-imidazolecarboxylic acid, and the balance is deionized water.

4. The processing technology of the gold and silver thread fabric based on the discontinuous aluminum layer according to claim 1 is characterized in that: The composition of the antibacterial finishing liquid is: deionized water is used as solvent, wherein the composite nano zinc oxide (1-5) g / L, modified waterborne polyurethane emulsion 25 g / L, penetrant 0.8 g / L, softener 9 g / L.

5. The processing technology of the gold and silver thread fabric based on the discontinuous aluminum layer according to claim 1 is characterized in that: The working conditions of the padding treatment are: adopting a two-dip and two-rolling process, the dipping time is 80-90s, the rolling ratio is 90%, keeping the temperature at 80°C for 30min, heating to 150°C and keeping the temperature for 3min.

6. The processing technology of the gold and silver thread fabric based on the discontinuous aluminum layer according to claim 1 is characterized in that: The preparation of the composite nano zinc oxide comprises the following steps: (1) deionized water and 3-aminopropyltriethoxysilane are mixed, the pH value is adjusted to 4-6, nano zinc oxide is added, ultrasonic treatment is performed for 5-10 minutes, phytic acid is added, the pH value is adjusted to 7, stirring is performed at 18-25° C. for 22-24 hours, centrifugation is performed, and the mixture is washed with anhydrous ethanol and deionized water for 3-5 times in sequence, and dried to obtain phytic acid-modified nano zinc oxide; (2) Under a nitrogen atmosphere, dimethyl sulfoxide, dicyandiamide, urea, and menthol-based cyanuric chloride-derived diol are mixed, the temperature is raised to 95-100° C., a mixed solution of phytic acid-modified nano zinc oxide and dimethyl sulfoxide is added, the temperature is raised to 108-112° C. and kept warm for 2-3 hours, cooled, filtered, washed with anhydrous ethanol, centrifuged, and dried to obtain composite nano zinc oxide.

7. The processing technology of the gold and silver thread fabric based on the discontinuous aluminum layer according to claim 1 is characterized in that: The preparation of the modified aqueous polyurethane emulsion comprises the following steps: In a nitrogen atmosphere, polytetramethylene glycol, hydroxyl-terminated polydimethylsiloxane, isophorone diisocyanate and dibutyltin dilaurate are mixed, kept at 70-75°C for 1-2h, 2,2-bis(hydroxymethyl)propionic acid and N,N-dimethylformamide are added, the temperature is raised to 78-82°C and kept for 1-2h, menthol-based cyanuric chloride-derived diol and N,N-dimethylformamide are added and kept for 1-2h, the temperature is lowered to 35-40°C, triethylamine is added for neutralization for 20-30min, deionized water is added for emulsification, and a modified waterborne polyurethane emulsion is obtained.

8. The processing technology of the gold and silver thread fabric based on the discontinuous aluminum layer according to claim 7 is characterized in that: The mass ratio of polytetramethylene ether diol, hydroxyl-terminated polydimethylsiloxane, isophorone diisocyanate, 2,2-bishydroxymethylpropionic acid, and menthol-based cyanuric chloride-derived diol is 10:1:6:0.8:

1.

9. A processing technology for gold and silver thread fabric based on discontinuous aluminum layer according to claim 6 or 7, characterized in that: The preparation of the menthol-based cyanuric chloride-derived diol comprises the following steps: A. Mix menthol, cyanuric chloride and dichloromethane, add 2,4,6-trimethylpyridine, keep warm at 18-25°C for 10-12h, extract with deionized water for 3-5 times, rotary evaporate, separate through silica gel column with petroleum ether and dichloromethane in a volume ratio of 10:1 as solvent, and dry to obtain menthol-based cyanuric chloride derivatives; B. Mix a menthol-based cyanuric chloride derivative and ethylene dichloride, add a mixed solution of ethanolamine and ethylene dichloride, keep warm in an oil bath at 78-82° C. for 7-8 hours, extract with deionized water for 3-5 times, evaporate under reduced pressure, and dry to obtain a menthol-based cyanuric chloride derivative diol.

10. A gold and silver thread fabric based on a discontinuous aluminum layer, characterized in that: The invention is prepared by the processing technology described in any one of claims 1 to 8.

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