Three-proofing antibacterial double-layer children's garment fabric and preparation method thereof

Abstract

The invention discloses a three-proofing antibacterial double-layer children garment fabric and a preparation method thereof, and belongs to the technical field of functional fabrics. The three-proofing finishing agent and the antibacterial agent are added into the spinning solution, so that the three-proofing antibacterial filament is prepared in one step; then three-proofing antibacterial yarns are prepared through plying and twisting, and the three-proofing antibacterial fabric is prepared by weaving and binding double-layer weaves with antibacterial moisture-conducting quick-drying yarns. The whole process is simple, the step of after-treatment is omitted, and the antibacterial and three-proofing effects are more lasting; meanwhile, some properties of the fabric are not influenced. A special fabric weave structure is adopted, construction of the double-layer fabric of the stepped micropore structure is achieved in integrated weaving, and the double functions of comfort and functionality are achieved through mutual cooperation of the surface weave and the inner weave.

Description

Technical Field

[0001] The invention relates to a triple-proof antibacterial double-layer children's clothing fabric and a preparation method thereof, belonging to the technical field of functional fabrics. Background Art

[0002] In recent years, three-proof fabrics have achieved effective barrier to liquids and stains through post-finishing methods such as grafting or coating low surface energy coating materials on the fabric surface. They are widely used in outdoor clothing, home textiles and medical textiles, and have become one of the research hotspots for the development of functional fabrics. As the application scenarios become increasingly complex, a single three-proof performance can no longer meet people's demand for multifunctional protection of textiles. The preparation of three-proof antibacterial fabrics with waterproof, anti-fouling, self-cleaning and antibacterial properties can effectively inhibit bacterial attachment and reproduction, and meet people's needs for healthy, comfortable and safe clothing.

[0003] Existing three-proof functional fabrics are usually made of high-density fibers or coating technology, but these materials often reduce breathability while improving protective performance, resulting in stuffiness and discomfort when worn, especially when children are more active. At the same time, the bonding strength between the finishing agent and the surface of the fabric, and the functional loss after washing and abrasion are technical difficulties worthy of attention. Therefore, the development of a fabric that meets the requirements of breathability, antibacterial and wear resistance while having three-proof functions is of great significance to improving the market competitiveness of three-proof children's clothing.

[0004] The fabric structure of the fabric determines the appearance, feel and physical properties of the fabric. Common three-proof fabrics often use a tight plain weave structure to achieve a combination of wear resistance and functionality; however, the tight weaving limits the feel, visual and drape properties of the fabric. For example: CN 118422493 A discloses a waterproof finishing agent for fabrics and a method of using it and a method for preparing antibacterial waterproof fabrics, which uses 3,3',4,4'-benzophenone tetracarboxylic dianhydride to combine with nano-silica on the fabric surface through an ester bond to construct a rough surface structure to obtain a fabric with waterproof and antibacterial properties, but the safety of the raw materials described is not high and the cytotoxicity has not been investigated. CN 220284338 U discloses a method for manufacturing a three-proof fabric, which is woven with existing three-proof fibers. The three-proof fibers have waterproof, oil-proof and antifouling functions. The weft yarns are made of the three-proof fibers, and the warp yarns are made of ordinary fibers. The three-proof fabric with ventilation holes is obtained by hot-melting the weft yarns. Although the problem of air permeability is solved, water will seep through the warp yarns when the water flows through the warp yarns, making the waterproofness of the three-proof fabric worse.

[0005] Therefore, it is of great significance to provide a method for preparing a triple-proof antibacterial double-layer fabric with wearing comfort and antibacterial properties, which can achieve the triple-proof properties through a non-laminated structure while ensuring that the fabric has good air permeability and moisture conductivity. Summary of the invention

[0006] [Technical issues]

[0007] A single three-proof performance is difficult to meet people's demand for multi-functional protection of textiles.

[0008] Conventional three-proof fabrics cannot take into account three-proof, antibacterial and wearing performance at the same time.

[0009] [Technical solution]

[0010] In order to solve the above problems, the present invention provides a three-proof antibacterial double-layer children's clothing fabric, which achieves the three-proof, antibacterial and wearability performance at the same time; moreover, the present invention adds a three-proof auxiliary agent and an antibacterial agent to the spinning solution, and prepares the filament with three-proof and antibacterial effects by a one-step method, and the durability of the three-proof and antibacterial properties of the fabric prepared by the method is better. In addition, the organizational structure adopted by the fabric of the present invention is obtained by integral weaving, and has stepped micropores, which is more suitable for achieving the wearability of the fabric.

[0011] The first object of the present invention is to provide a one-step method for preparing a triple-proof antibacterial filament, comprising the following steps:

[0012] The polyacrylonitrile powder and the solvent are mixed evenly to obtain a polyacrylonitrile spinning solution; then, a three-proof finishing agent is first added to the polyacrylonitrile spinning solution, and then an antibacterial agent is added and mixed evenly to obtain a spinning solution; the spinning solution is wet-spun to obtain a three-proof antibacterial filament;

[0013] The three-proof finishing agent is a mixture of methyltriethoxysilane, nano-silicon dioxide and polyvinyl pyrrolidone in a mass ratio of 2-4:1-3:0.1-0.5; the antibacterial agent is one or two of carboxylated lithospermum oil and carboxylated puerarin.

[0014] In one embodiment of the present invention, the solvent is one or both of N,N-dimethylacetamide (DMAC) and dimethyl sulfoxide (DMSO).

[0015] In one embodiment of the present invention, the mass fraction of the polyacrylonitrile powder in the solvent is 8-25%.

[0016] In one embodiment of the present invention, the mass ratio of the polyacrylonitrile spinning solution, the three-proof finishing agent, and the antibacterial agent is 100:3-10:2-5.

[0017] In one embodiment of the present invention, the preparation method of carboxylated lithospermum oil is as follows:

[0018] Adding lithospermum oil and potassium carbonate into ethyl acetate to obtain lithospermum oil solution;

[0019] Succinic anhydride is slowly added to the lithospermum oil solution, and the mixture is stirred and reacted at 60-70° C. for 4-8 hours. After the reaction is completed, an appropriate amount of distilled water is added, and the aqueous phase and the organic phase are separated using a separatory funnel;

[0020] The residual acidic substances in the organic phase were neutralized with a 0.1 mol / L sodium hydroxide aqueous solution, the organic phase was washed with water for multiple times, and finally dried with anhydrous sodium sulfate to remove water, and ethyl acetate was removed by vacuum distillation to obtain a viscous carboxylated lithospermum oil;

[0021] Wherein, the mass ratio of potassium carbonate, lithospermum officinale oil and ethyl acetate is 1:10-20:50-200;

[0022] The molar ratio of succinic anhydride to lithospermum oil is 2:1.

[0023] In one embodiment of the present invention, the preparation method of carboxylated puerarin is as follows:

[0024] Dissolve puerarin in an anhydrous dichloromethane / methanol mixture, add a catalyst DMAP; then slowly add succinic anhydride, stir and react at 30-50°C and 200-400rpm for 4-8 hours; after the reaction is completed, add an equal volume of 0.1M dilute hydrochloric acid solution to the reaction system, separate the organic phase with a separatory funnel, wash the organic phase with a saturated sodium bicarbonate solution to remove succinic anhydride, and dry with anhydrous sodium sulfate to obtain carboxylated puerarin;

[0025] The volume ratio of dichloromethane to methanol in the anhydrous dichloromethane / methanol mixture is 9:1;

[0026] The ratio of DMAP, puerarin, and solvent is 1mmol:10mmol:200-300mL;

[0027] The molar ratio of puerarin to succinic anhydride is 1:1.5.

[0028] In one embodiment of the present invention, the uniform mixing can be performed by stirring, ultrasound, or homogenization.

[0029] In one embodiment of the present invention, wet spinning is a process in which the spinning solution is ejected through a spinneret, coagulated, drawn, and heat-set to obtain a triple-proof antibacterial filament;

[0030] Wherein, the mass fraction of polyacrylonitrile in the spinning solution is 8-25%;

[0031] Spinning speed is 50-100m / min;

[0032] The coagulation bath is a DMSO solution with a mass fraction of 10-30%, and the coagulation temperature is 10-30°C;

[0033] The drawing is 1-5 times drawing at 60-90℃;

[0034] Heat setting is performed at 90-110°C for 5-10 minutes.

[0035] The second object of the present invention is the triple-proof antibacterial filament prepared by the method described in the present invention.

[0036] In one embodiment of the present invention, the fineness of the triple-proof antibacterial filament is 0.5-1.5D.

[0037] The third object of the present invention is to provide a method for preparing a triple-proof antibacterial yarn, comprising the following steps:

[0038] A plurality of triple-proof antibacterial filaments are twisted together, the number of the twisted filaments is 20-30, the twist direction is S twist or Z twist, and the twist degree is 200-800 twists / meter to obtain a triple-proof antibacterial yarn.

[0039] The fourth object of the present invention is the triple-proof antibacterial yarn prepared by the method described in the present invention.

[0040] In one embodiment of the present invention, the fineness of the triple-proof antibacterial yarn is 10-40D.

[0041] A fifth object of the present invention is to provide a method for preparing a triple-proof antibacterial double-layer children's clothing fabric, comprising the following steps:

[0042] The triple-proof antibacterial yarn is used as the surface weave warp and weft yarn to weave plain weave to form the outer surface of the fabric;

[0043] The antibacterial, moisture-conducting and quick-drying yarn is used as the inner weave warp and weft yarn to weave a porous structure to form the inner surface of the fabric;

[0044] The outer surface and the inner surface are connected together by a double-layer structure to form a triple-proof antibacterial double-layer children's clothing fabric.

[0045] In one embodiment of the present invention, the warp yarn density on the outer surface of the fabric is 40-50 yarns / cm, and the weft yarn density is 25-35 yarns / cm.

[0046] In one embodiment of the present invention, the warp yarn density in the inner surface of the fabric is 20-30 yarns / cm, and the weft yarn density is 15-20 yarns / cm.

[0047] In one embodiment of the present invention, the arrangement ratio of the surface weave warp yarns to the lining weave warp yarns is 1:1, and the arrangement ratio of the surface weave weft yarns to the lining weft yarns is 1:1.

[0048] In one embodiment of the present invention, the porous tissue is one of a honeycomb tissue, a perforated tissue, and a lattice tissue.

[0049] In one embodiment of the present invention, the fineness of the antibacterial, moisture-conducting and quick-drying yarn is 10-40D; it can be purchased commercially or prepared by itself;

[0050] For example, the preparation method is as follows:

[0051] 50% combed cotton and 30% ramie fiber by mass percentage are mixed on a spinning machine to prepare a composite yarn, the roving frame speed is set to 4000 rpm, and the spinning frame speed is set to 5500 rpm. Finally, a hollow polyester fiber with a mass fraction of 20% is incorporated by a doubling machine to make an antibacterial, moisture-conducting and quick-drying yarn.

[0052] The sixth objective of the present invention is the triple-proof antibacterial double-layer children's clothing fabric prepared by the method described in the present invention.

[0053] The seventh objective of the present invention is the application of the triple-proof antibacterial double-layer children's clothing fabric described in the present invention in clothing textiles.

[0054] In one embodiment of the present invention, the clothing textiles include a jacket and the like.

[0055] The eighth object of the present invention is to provide a jacket which adopts the triple-proof antibacterial double-layer children's clothing fabric described in the present invention.

[0056] [Beneficial Effects]

[0057] (1) The present invention achieves the one-step preparation of three-proof antibacterial filaments by adding a three-proof finishing agent and an antibacterial agent to the spinning solution; then the three-proof antibacterial yarn is prepared by plying and twisting, and then the three-proof antibacterial fabric is prepared by weaving and splicing a double-layer structure with the antibacterial moisture-conducting and quick-drying yarn. The whole process is simple, eliminating the post-finishing step, and the antibacterial and three-proof effects are more lasting; at the same time, some properties of the fabric itself are not affected.

[0058] (2) The antibacterial agent in the triple-proof antibacterial filament of the present invention is distributed on the surface of the fiber and in the microporous structure, giving the yarn antibacterial properties; methyltriethoxysilane is mainly distributed on the fiber surface to form a hydrophobic siloxane network, providing a waterproof and oil-proof effect; nano-SiO 2 Filled on the fiber surface and micropores, it enhances anti-fouling, wear-resistant and synergistic antibacterial effects.

[0059] (3) The present invention adopts a special fabric structure to realize the construction of a double-layer fabric with a stepped microporous structure in one-piece weaving, and realizes the dual functions of comfort and functionality through the mutual cooperation of the surface and inner fabrics. BRIEF DESCRIPTION OF THE DRAWINGS

[0060] Figure 1 This is the organizational chart of the open-cell organization.

[0061] Figure 2An organizational chart for a beehive organization.

[0062] Figure 3 An organizational chart for a grid organization. DETAILED DESCRIPTION

[0063] The preferred embodiments of the present invention are described below. It should be understood that the embodiments are for better explaining the present invention and are not used to limit the present invention.

[0064] Test method:

[0065] 1. Water repellency test:

[0066] The water repellency test was carried out according to GB / T 42694-2023 "Test and evaluation of anti-wetting performance of textile surfaces - Contact angle and rolling angle method".

[0067] 2. Oil repellency test:

[0068] The oil repellency test was carried out according to GB / T 19977-2014: the standard is called "Test for Oil Repellency and Hydrocarbon Resistance of Textiles".

[0069] 3. Air permeability test:

[0070] The test was conducted using the FX3300Ⅲ fabric air permeability tester in accordance with DIN EN ISO 9237—1995 “Determination of air permeability of textile fiber fabrics”.

[0071] The test area is 20cm 2 , pressure difference 200Pa, test the air flow rate vertically passing through a given area of ​​the sample within a certain period of time, take samples from different parts of the same fabric for 10 tests, and take the average value.

[0072] 4. Antibacterial performance test:

[0073] GB / T 20944.3-2008 “Evaluation of antimicrobial properties of textiles Part 3: Oscillation method” is used to test the antimicrobial properties.

[0074] 5. Test of thermal insulation performance:

[0075] The thermal insulation performance test is carried out according to GB / T 11048-2018 "Determination of thermal and moisture resistance of textiles under steady-state conditions of physiological comfort".

[0076] 6. Wear resistance test:

[0077] The fabric wear resistance test was carried out according to the GB / T 21196.1-2007 series of standards "Determination of the abrasion resistance of textile fabrics by the Martindale method".

[0078] 7. Anti-fouling performance test

[0079] The test is carried out according to GB / T 30159.1-2013 “Testing and evaluation of antifouling properties of textiles Part 1: Stain resistance”.

[0080] The raw materials used in the embodiment:

[0081] Polyacrylonitrile powder: RG, CAS No.: 2031-67-6, purchased from adamas;

[0082] Methyltriethoxysilane: RG, CAS No.: 25014-41-9, purchased from adamas;

[0083] Nano-silicon dioxide: 20 nm, CAS number: 7631-86-9, purchased from Xianfeng Nano;

[0084] Polyvinylpyrrolidone: RG, CAS No.: 9033-39-8, purchased from adamas;

[0085] N, N-dimethylformamide: RG, CAS No.: 68-12-2, purchased from adamas;

[0086] Dimethyl sulfoxide: 99.7%, CAS No.: 67-68-5, purchased from adamas;

[0087] The preparation method of carboxylated lithospermum oil is as follows:

[0088] Adding lithospermum oil and potassium carbonate into ethyl acetate to obtain lithospermum oil solution; wherein the mass ratio of potassium carbonate, lithospermum oil and ethyl acetate is 1:15:100;

[0089] Succinic anhydride was slowly added to the lithospermum oil solution, and the mixture was stirred at 65°C for 8 hours. After the reaction was completed, an appropriate amount of distilled water was added, and the aqueous phase and the organic phase were separated using a separatory funnel. The molar ratio of succinic anhydride to lithospermum oil was 2:1.

[0090] The residual acidic substances in the organic phase were neutralized with a 0.1 mol / L sodium hydroxide aqueous solution, and the organic phase was washed with water for multiple times. Finally, the organic phase was dried with anhydrous sodium sulfate to remove water, and the ethyl acetate was removed by vacuum distillation to obtain a viscous carboxylated lithospermum oil.

[0091] The preparation method of carboxylated puerarin is as follows:

[0092] Puerarin was dissolved in anhydrous dichloromethane / methanol mixture (the volume ratio of dichloromethane to methanol was 9:1), and the catalyst DMAP was added. The ratio of DMAP, puerarin, and solvent was 1 mmol: 10 mmol: 250 mL;

[0093] Succinic anhydride was slowly added at a molar ratio of puerarin to succinic anhydride of 1:1.5, and the mixture was stirred at 40°C and 300 rpm for 6 hours. After the reaction was completed, an equal volume of 0.1 M dilute hydrochloric acid solution was added to the reaction system, and the organic phase was separated with a separatory funnel. The organic phase was washed with a saturated sodium bicarbonate solution to remove succinic anhydride, and dried with anhydrous sodium sulfate to obtain carboxylated puerarin.

[0094] The preparation method of the antibacterial moisture-conducting quick-drying yarn is as follows:

[0095] 50% by mass of combed cotton and 30% by mass of ramie fiber are mixed on a spinning machine to prepare a composite yarn, the roving frame speed is set to 4000 rpm, and the spinning frame speed is set to 5500 rpm. Finally, 20% by mass of hollow polyester fiber is incorporated by a doubling machine to make an antibacterial, moisture-conducting and quick-drying yarn (20D).

[0096] The solutions involved in the embodiments and comparative examples that do not specify the solvent are water as the solvent, the % involved that does not specify the meaning refers to mass percentage, and the reaction temperature involved that does not specify the meaning refers to room temperature (20-30° C.).

[0097] Example 1

[0098] A one-step method for preparing triple-proof antibacterial filaments comprises the following steps:

[0099] 20g of polyacrylonitrile powder and 80g of dimethyl sulfoxide were mixed evenly, and then 5g of a three-proof finishing agent was added first, and then 3g of an antibacterial agent was added, and the mixture was homogenized at 10000rpm for 10min to obtain a spinning solution; wherein the three-proof finishing agent was a mixture of methyltriethoxysilane, nano-silicon dioxide, and polyvinyl pyrrolidone in a mass ratio of 4:2:0.4; and the antibacterial agent was carboxylated lithospermum oil;

[0100] The spinning solution is ejected through the spinneret, coagulated, drawn, and heat-set to obtain triple-proof antibacterial filaments with a fineness of 0.8D; wherein, the spinning speed is 70m / min, the mass fraction of the coagulation bath is 20% DMSO solution, and the coagulation temperature is 20°C; the drawing is 3 times at 80°C; and the heat setting is heat setting at 100°C for 8 minutes.

[0101] Example 2

[0102] A one-step method for preparing triple-proof antibacterial filaments comprises the following steps:

[0103] 20g of polyacrylonitrile powder and 80g of dimethyl sulfoxide were mixed evenly, and then 5g of a three-proof finishing agent was first added, and then 3g of an antibacterial agent was added, and the mixture was homogenized at 10000rpm for 10min to obtain a spinning solution; wherein the three-proof finishing agent was a mixture of methyltriethoxysilane, nano-silicon dioxide, and polyvinyl pyrrolidone in a mass ratio of 4:2:0.4; and the antibacterial agent was carboxylated puerarin;

[0104] The spinning solution is ejected through the spinneret, coagulated, drawn, and heat-set to obtain triple-proof antibacterial filaments with a fineness of 0.8D; wherein, the spinning speed is 70m / min, the coagulation bath is a 20% by mass DMSO solution, the coagulation temperature is 20°C; the drawing is 3 times at 80°C; and the heat setting is heat setting at 100°C for 8 minutes.

[0105] Example 3

[0106] A one-step method for preparing triple-proof antibacterial filaments comprises the following steps:

[0107] 20g of polyacrylonitrile powder and 80g of dimethyl sulfoxide were mixed evenly, and then 5g of a three-proof finishing agent was added first, and then 3g of an antibacterial agent was added, and the mixture was homogenized at 10000rpm for 10min to obtain a spinning solution; wherein the three-proof finishing agent was a mixture of methyltriethoxysilane, nano-silicon dioxide, and polyvinyl pyrrolidone in a mass ratio of 4:2:0.4; and the antibacterial agent was carboxylated lithospermum oil and carboxylated puerarin in a mass ratio of 1:1;

[0108] The spinning solution is ejected through the spinneret, coagulated, drawn, and heat-set to obtain triple-proof antibacterial filaments with a fineness of 0.8D; wherein, the spinning speed is 70m / min, the coagulation bath is a DMSO solution with a mass fraction of 20%, and the coagulation temperature is 20°C; the drawing is 3 times drawing at 80°C; and the heat setting is heat setting at 100°C for 8 minutes.

[0109] Example 4

[0110] A one-step method for preparing triple-proof antibacterial filaments comprises the following steps:

[0111] 20g of polyacrylonitrile powder and 80g of dimethyl sulfoxide were mixed evenly, and then 5g of a three-proof finishing agent was added first, and then 3g of an antibacterial agent was added, and the mixture was homogenized at 10000rpm for 10min to obtain a spinning solution; wherein the three-proof finishing agent was a mixture of methyltriethoxysilane, nano-silicon dioxide, and polyvinyl pyrrolidone in a mass ratio of 2:2:0.3; and the antibacterial agent was carboxylated lithospermum oil;

[0112] The spinning solution is ejected through the spinneret, coagulated, drawn, and heat-set to obtain triple-proof antibacterial filaments with a fineness of 0.8D; wherein, the spinning speed is 70m / min, the coagulation bath is a DMSO solution with a mass fraction of 20%, and the coagulation temperature is 20°C; the drawing is 3 times drawing at 80°C; and the heat setting is heat setting at 100°C for 8 minutes.

[0113] Comparative Example 1

[0114] The nano-silicon dioxide in step (1) of Example 1 was omitted, and the other steps were the same as those of Example 1 to obtain filaments.

[0115] Comparative Example 2

[0116] The methyltrioxysilane in step (1) of Example 1 was omitted, and the other steps were the same as those of Example 1 to obtain filaments.

[0117] Comparative Example 3

[0118] The nano silicon dioxide in step (1) of Example 1 was adjusted to titanium oxide, and the other parts were kept consistent with Example 1 to obtain filaments.

[0119] Comparative Example 4

[0120] The carboxylated lithospermum oil in step (1) of Example 1 was adjusted to lithospermum oil, and the other steps were kept consistent with Example 1 to obtain filaments.

[0121] Comparative Example 5

[0122] The carboxylated lithospermum oil in step (1) of Example 1 was adjusted to nano silver particles, and the rest was kept consistent with Example 1 to obtain filaments.

[0123] Comparative Example 6

[0124] A method for preparing antibacterial three-proof filament comprises the following steps:

[0125] 20g of polyacrylonitrile powder and 80g of dimethyl sulfoxide are mixed evenly, and homogenized at 10000rpm for 10min to obtain a spinning solution; the spinning solution is ejected through a spinneret, coagulated, drawn, and heat-set to obtain filaments with a fineness of 0.8D; wherein, the spinning speed is 70m / min, the coagulation bath is a DMSO solution with a mass fraction of 20%, and the coagulation temperature is 20°C; the drawing is 3 times at 80°C; and the heat setting is heat setting at 100°C for 8min.

[0126] 3 mL of methyltriethoxysilane was added to 100 mL of 70% ethanol aqueous solution, the pH value of the mixed solution was adjusted to 4 with acetic acid, and then 2 g of nano-silica particles were added to form a three-proof finishing solution;

[0127] Disperse 5 g of carboxylated lithospermum oil in 100 mL of 40% ethanol aqueous solution, stir and mix at 50°C to form an antibacterial finishing solution;

[0128] The filaments were first immersed in a triple-proof finishing liquid for 10 minutes, taken out, and dried at 80°C for 30 minutes; then immersed in an antibacterial finishing liquid for 10 minutes, taken out, and dried at 80°C for 30 minutes to obtain triple-proof antibacterial filaments.

[0129] Example 5

[0130] A method for preparing triple-proof antibacterial yarn comprises the following steps:

[0131] Ten filaments obtained in each of Examples 1-4 and Comparative Examples 1-6 were taken and twisted separately, with an S twist and a twist of 200 twists / m to obtain a triple-proof antibacterial yarn with a fineness of 20D.

[0132] Example 6

[0133] A method for preparing a triple-proof antibacterial double-layer children's clothing fabric comprises the following steps:

[0134] The triple-proof antibacterial yarn prepared in Example 5 is used as the surface weft and warp yarns, the warp density is 44 yarns / cm, and the weft density is 30 yarns / cm; plain weave is woven to form the outer surface of the fabric;

[0135] Antibacterial moisture-conducting quick-drying yarn is used as the inner weft and warp yarn, with a warp density of 21 yarns / cm and a weft density of 18 yarns / cm; weaving open-hole weave (structure such as Figure 1 ), forming the inner surface of the fabric;

[0136] The outer surface and the inner surface are connected together by a double-layer structure to form a triple-proof antibacterial double-layer children's clothing fabric;

[0137] Among them, the arrangement ratio of the surface warp yarn and the inner warp yarn is 1:1, and the arrangement ratio of the surface weft yarn and the inner weft yarn is 1:1.

[0138] Comparative Example 7

[0139] The triple-proof antibacterial yarn in Example 6 is adjusted to a conventional pure polyacrylonitrile yarn (0.8D pure polyacrylonitrile filament, 10 strands twisted, S twist, 200 twists / m, 20D) to obtain a fabric; then a PU layer is hot-pressed on the surface of the fabric with a thickness of 80 μm, a hot-pressing temperature of 150°C, and a hot-pressing time of 30s to obtain a triple-proof fabric.

[0140] The obtained three-proof antibacterial fabric was subjected to performance testing, and the test results are as follows:

[0141] Table 1 Performance test results of the prepared three-proof antibacterial fabric

[0142]

[0143] Table 2 Performance after 10,000 frictions

[0144]

[0145] It can be seen from Table 1 that the three-proof effect of Example 4 is slightly worse than that of Examples 1-3. This is because the reduction in the amount of methyltriethoxysilane MTMS reduces the synergistic effect of the silicon-oxygen network composite structure and the silicon dioxide micro-nano rough structure. The poor effects of Comparative Examples 1 and 2 are also based on this.

[0146] It can be seen from Table 2 that the three-proof and antibacterial properties of the fabric can be effectively maintained by a suitable additive ratio. The performance of Comparative Example 3 decreased significantly after friction, which is because titanium oxide has photocatalytic properties, is easily photodegraded, and has poor durability.

[0147] Although the present invention has been disclosed as above in the form of a preferred embodiment, it is not intended to limit the present invention. Anyone familiar with this technology can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention should be based on the definition of the claims.

Claims

1. A one-step method for preparing triple-proof antibacterial filaments, characterized in that: The steps include: The polyacrylonitrile powder and the solvent are mixed evenly to obtain a polyacrylonitrile spinning solution; then, a three-proof finishing agent is first added to the polyacrylonitrile spinning solution, and then an antibacterial agent is added and mixed evenly to obtain a spinning solution; the spinning solution is wet-spun to obtain a three-proof antibacterial filament; The three-proof finishing agent is a mixture of methyltriethoxysilane, nano-silicon dioxide and polyvinyl pyrrolidone in a mass ratio of 2-4:1-3:0.1-0.5; the antibacterial agent is one or two of carboxylated lithospermum oil and carboxylated puerarin.

2. The method according to claim 1, characterized in that: The mass ratio of polyacrylonitrile spinning solution, three-proof finishing agent and antibacterial agent is 100:3-10:2-5.

3. The triple-proof antibacterial filament prepared by the method according to claim 1 or 2.

4. A method for preparing triple-proof antibacterial yarn, characterized in that: The steps include: A plurality of triple-proof antibacterial filaments as claimed in claim 3 are twisted together, the number of the twisted filaments is 20-30, the twist direction is S twist or Z twist, and the twist degree is 200-800 twists / m to obtain a triple-proof antibacterial yarn.

5. The triple-proof antibacterial yarn prepared by the method according to claim 4.

6. A method for preparing a triple-proof antibacterial double-layer children's clothing fabric, characterized in that: The steps include: The triple-proof antibacterial yarn of claim 5 is used as the surface weft and warp yarn to weave a plain weave to form the outer surface of the fabric; The antibacterial, moisture-conducting and quick-drying yarn is used as the inner weave warp and weft yarn to weave a porous structure to form the inner surface of the fabric; The outer surface and the inner surface are connected together by a double-layer structure to form a triple-proof antibacterial double-layer children's clothing fabric.

7. The method according to claim 6, characterized in that The porous tissue is one of the following: honeycomb tissue, openwork tissue and lattice tissue.

8. The triple-proof antibacterial double-layer children's clothing fabric prepared by the method according to claim 6 or 7.

9. Use of the triple-proof antibacterial double-layer children's clothing fabric according to claim 8 in clothing textiles.

10. A jacket, characterized in that: The triple-proof antibacterial double-layer children's clothing fabric described in claim 8 is used.

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