A three-proofing antibacterial double-layer children's wear fabric and a preparation method thereof

Abstract

The application discloses a kind of three-proof antibacterial double-layer children's wear fabric and preparation method thereof, belong to functional fabric technical field.The application is by adding three-proof finishing agent and antibacterial agent in spinning solution, realize one-step preparation three-proof antibacterial filament;After that, three-proof antibacterial yarn is prepared by plying and twisting, and then three-proof antibacterial fabric is prepared by weaving and joining double-layer tissue with antibacterial moisture-conducting and quick-drying yarn.The whole process is simple, saves the step of finishing, and the antibacterial, three-proof effect is more durable;At the same time, it does not affect some properties of the fabric itself.The application adopts special fabric organization structure, realizes the construction of ladder microporous structure double-layer fabric in integrated weaving, and realizes the dual function of comfort and functionality through the mutual cooperation of surface and lining organization.

Description

Technical Field

[0001] The invention relates to a triple-proof and 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, triple-proof fabrics have achieved effective resistance 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, becoming a research hotspot in the development of functional fabrics. As application scenarios become increasingly complex, single triple-proof properties are no longer sufficient to meet the demand for multifunctional textile protection. The development of triple-proof antimicrobial fabrics with waterproof, antifouling, self-cleaning, and antibacterial properties can effectively inhibit bacterial adhesion and reproduction, meeting people's demand for healthy, comfortable, and safe clothing.

[0003] Existing three-proof functional fabrics are usually made using high-density fibers or coating technology. However, while these materials improve protective performance, they often reduce breathability, resulting in stuffiness and discomfort when worn, especially when children are active. At the same time, the bonding strength between the finishing agent and the fabric surface, as well as the loss of function after washing and abrasion resistance are technical difficulties worthy of attention. Therefore, developing a fabric that not only has three-proof functions but also meets the requirements of breathability, antibacterial properties, and wear resistance is of great significance to improving the market competitiveness of three-proof children's clothing.

[0004] The fabric structure determines its appearance, feel, and physical properties. Common three-proof fabrics often combine wear resistance and functionality with a tight plain weave; however, this tight weave limits the fabric's feel, visual appeal, and drape properties. For example, CN 118422493 A discloses a waterproof finishing agent for fabrics, a method for its use, and a method for preparing antibacterial and waterproof fabrics. The method utilizes 3,3',4,4'-benzophenonetetracarboxylic dianhydride bonded to the fabric surface via an ester bond and nano-silica to create a rough surface structure, resulting in a fabric with waterproof and antibacterial properties. However, the raw materials described are not safe and their cytotoxicity has not been investigated. CN 220284338 U discloses a method for manufacturing a three-proof fabric. The fabric is woven using existing three-proof fibers. The three-proof fibers have waterproof, oil-proof and antifouling properties. The weft yarns are made of the three-proof fibers and the warp yarns are made of ordinary fibers. The weft yarns are then hot-fused to obtain the three-proof fabric with ventilation holes. Although the problem of ventilation is solved, water will seep through the warp yarns when flowing through them, which deteriorates the waterproofness of the three-proof fabric.

[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

[0006] [Technical Problem]

[0007] Single three-proofing performance is difficult to meet the demand of people on textile multifunctional protection.

[0008] The conventional three-proofing fabric cannot simultaneously consider three-proofing, antibacterial and wearing performance.

[0009] [Technical Solution]

[0010] In order to solve the above problems, the application provides a three-proofing antibacterial double-layer children's wear fabric, which realizes the simultaneous consideration of three-proofing, antibacterial and wearing performance; moreover, the application adds three-proofing auxiliaries and antibacterial agents in the spinning solution, and prepares the long filament with three-proofing antibacterial effect through one-step method, and the prepared fabric has better durability of three-proofing and antibacterial performance. In addition, the fabric of the application adopts an integrated weaving structure and has a stepped micropore, and is more suitable for realizing the wearing performance of the fabric.

[0011] The first object of the application is to provide a method for preparing three-proofing antibacterial long filament through one-step method, comprising the following steps:

[0012] Mixing polyacrylonitrile powder and solvent uniformly to obtain polyacrylonitrile spinning solution; then adding three-proofing finishing agent and antibacterial agent in the polyacrylonitrile spinning solution in sequence, and mixing uniformly to obtain the spinning solution; spinning the spinning solution through a wet spinning method to obtain the three-proofing antibacterial long filament;

[0013] The three-proofing finishing agent is a mixture of methyl triethoxysilane, nano-silicon dioxide and polyvinylpyrrolidone with a mass ratio of 2-4:1-3:0.1-0.5; and the antibacterial agent is one or both of carboxylated lithospermum oil and carboxylated puerarin.

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

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

[0016] In an embodiment of the application, the mass ratio of polyacrylonitrile spinning solution, three-proofing finishing agent and antibacterial agent is 100:3-10:2-5.

[0017] In an embodiment of the application, the preparation method of carboxylated lithospermum oil is as follows:

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

[0019] Succinic anhydride was slowly added to the lithospermum oil solution, and the mixture was stirred at 60-70°C for 4-8 hours. After the reaction was complete, an appropriate amount of distilled water was added, and the aqueous phase and the organic phase were 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, and the organic phase was washed with water several times. Finally, the water was removed by drying with anhydrous sodium sulfate, and the 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] Puerarin was dissolved in an anhydrous dichloromethane / methanol mixture, and a catalyst DMAP was added; succinic anhydride was then slowly added, and the mixture was stirred at 30-50°C and 200-400 rpm for 4-8 hours; after the reaction was completed, an equal volume of 0.1M dilute hydrochloric acid solution was added to the reaction system, and the organic phase was separated using a separatory funnel. The organic phase was washed with a saturated sodium bicarbonate solution to remove the succinic anhydride, and then dried over 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 1 mmol: 10 mmol: 200-300 mL;

[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, the wet spinning process is to eject the spinning solution through a spinneret, coagulate, draw, and heat-set to obtain the 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] Drafting is 1-5 times 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 of 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 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 of 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 warp and weft yarn to weave a plain weave to form the outer surface of the fabric;

[0043] The antibacterial, moisture-conducting, and quick-drying yarns are used as the warp and weft yarns 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 outer surface of the fabric has a warp density of 40-50 yarns / cm and a weft density of 25-35 yarns / cm.

[0046] In one embodiment of the present invention, the warp yarn density on 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, 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] A composite yarn is prepared by mixing 50% combed cotton and 30% ramie fiber by mass on a spinning machine. The speed of the roving frame is set to 4000 rpm and the speed of the spinning frame 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 object of the present invention is a triple-proof antibacterial double-layer children's clothing fabric prepared by the method of the present invention.

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

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

[0055] The eighth object of the present invention is to provide a jacket that uses the triple-proof and 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 triple-proof antibacterial filaments by adding a triple-proof finishing agent and an antibacterial agent to the spinning solution; then, the triple-proof antibacterial yarn is prepared by plying and twisting, and then the triple-proof antibacterial fabric is prepared by weaving and splicing a double-layer structure with an antibacterial, moisture-conducting, and quick-drying yarn. The entire process is simple, eliminating the need for post-finishing steps, and the antibacterial and triple-proof effects are more durable; 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, forming a hydrophobic siloxane network, providing a waterproof and oil-proof effect; nano-SiO2 is filled on the fiber surface and in the micropores, enhancing the 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 an integrated weaving process, and realizes the dual functions of comfort and functionality through the mutual cooperation of the surface and inner tissues. BRIEF DESCRIPTION OF THE DRAWINGS

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

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

[0062] Figure 3 This is an organizational chart for a grid organization. DETAILED DESCRIPTION

[0063] The following describes preferred embodiments of the present invention. It should be understood that the embodiments are for better explanation of the present invention and are not intended 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 properties of textile surfaces - Contact angle and rolling angle method”.

[0067] 2. Oil repellency test:

[0068] The oil repellency test was conducted according to GB / T 19977-2014: Test method for oil repellency and hydrocarbon resistance of textiles.

[0069] 3. Air permeability test:

[0070] The test was conducted using the FX3300 III 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 20 cm 2 , pressure difference 200Pa, test the air flow rate vertically 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” was used to test the antimicrobial properties.

[0074] 5. Thermal insulation performance test:

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

[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 "Textiles - Determination of the Abrasion Resistance of Fabrics by the Martindale Method".

[0078] 7. Stain resistance test

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

[0080] The raw materials used in the embodiment are:

[0081] Polyacrylonitrile powder: RG, CAS number: 2031-67-6, purchased from adamas;

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

[0083] Nano-silica: 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 number: 68-12-2, purchased from adamas;

[0086] Dimethyl sulfoxide: 99.7%, CAS number: 67-68-5, purchased from Adamas;

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

[0088] Adding lithospermum oil and potassium carbonate to ethyl acetate to obtain a 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 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 (dichloromethane and methanol volume ratio was 9:1), and catalyst DMAP was added. The ratio of DMAP, puerarin and solvent was 1 mmol:10 mmol:250 mL;

[0093] The molar ratio of puerarin and succinic anhydride is 1:1.5, slowly add succinic anhydride, 40℃, 300rpm stirring reaction for 6 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 saturated sodium bicarbonate solution to remove succinic anhydride, and dry with anhydrous sodium sulfate to obtain carboxylated puerarin.

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

[0095] A composite yarn is prepared by mixing 50% mass percentage combed cotton and 30% ramie fiber with a spinning machine, the rotor speed of the roving machine is set to 4000 revolutions, the rotor speed of the spinning machine is set to 5500 revolutions, and finally the hollow polyester fiber with a mass percentage of 20% is combined into an antibacterial moisture-conducting and quick-drying yarn (20D) by a doubling machine.

[0096] The solutions involved in the examples and comparative examples are water as the solvent if the solvent is not specified, the % involved is mass percentage if the meaning is not specified, and the reaction temperature is room temperature (20-30℃) if the temperature is not specified.

[0097] Example 1

[0098] A one-step method for preparing a three-proofing antibacterial filament includes the following steps:

[0099] 20g of polyacrylonitrile powder and 80g of dimethyl sulfoxide are mixed uniformly, then 5g of a three-proofing finishing agent is added first, followed by 3g of an antibacterial agent, and the mixture is homogenized at 10000rpm for 10min to obtain a spinning solution; wherein the three-proofing finishing agent is a mixture of methyl triethoxysilane, nano-silicon dioxide and polyvinylpyrrolidone with a mass ratio of 4:2:0.4; the antibacterial agent is carboxylated larkspur oil;

[0100] The spinning solution is sprayed out of the spinneret, coagulated, drawn, and heat set to obtain a three-proofing antibacterial filament with a fineness of 0.8D; wherein the spinning speed is 70m / min, the coagulation bath is a 20% mass fraction DMSO solution, and the coagulation temperature is 20℃; the drawing is 3 times at 80℃; and the heat setting is 100℃ for 8min.

[0101] Example 2

[0102] A one-step method for preparing a three-proofing antibacterial filament includes the following steps:

[0103] 20g of polyacrylonitrile powder and 80g of dimethyl sulfoxide were mixed evenly, and then 5g of a three-proofing finishing agent and 3g of an antibacterial agent were added, and homogenized at 10,000rpm for 10min to obtain a spinning solution; wherein the three-proofing finishing agent was a mixture of methyltriethoxysilane, nano-silica, and polyvinylpyrrolidone 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 a triple-proof antibacterial filament 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 the drawing 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] 20 g of polyacrylonitrile powder and 80 g of dimethyl sulfoxide were uniformly mixed, and then 5 g of a three-proofing finishing agent and 3 g of an antibacterial agent were added, and homogenized at 10,000 rpm for 10 min to obtain a spinning solution; wherein the three-proofing finishing agent was a mixture of methyltriethoxysilane, nano-silica, and polyvinylpyrrolidone 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 a triple-proof antibacterial filament 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 the 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] 20 g of polyacrylonitrile powder and 80 g of dimethyl sulfoxide were mixed evenly, and then 5 g of a three-proofing finishing agent and 3 g of an antibacterial agent were added, and homogenized at 10,000 rpm for 10 min to obtain a spinning solution; wherein the three-proofing finishing agent was a mixture of methyltriethoxysilane, nano-silica, 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 a triple-proof antibacterial filament 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 the 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 remained the same as in Example 1 to obtain filaments.

[0117] Comparative Example 3

[0118] The nano-silicon dioxide in step (1) of Example 1 was replaced with 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 parts 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 replaced with nano-silver particles, and the other steps were kept consistent with Example 1 to obtain filaments.

[0123] Comparative Example 6

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

[0125] 20 g of polyacrylonitrile powder and 80 g of dimethyl sulfoxide were mixed evenly and homogenized at 10,000 rpm for 10 minutes to obtain a spinning solution. The spinning solution was ejected through a spinneret, coagulated, drawn, and heat-set to obtain filaments with a fineness of 0.8D. The spinning speed was 70 m / min, the coagulation bath was a 20% by mass DMSO solution, and the coagulation temperature was 20°C. The drawing was performed at 80°C with a draw ratio of 3 times; and the heat setting was performed at 100°C for 8 minutes.

[0126] 3 mL of methyltriethoxysilane was added to 100 mL of a 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-proofing finishing solution;

[0127] 5g carboxylated comfrey oil was dispersed in 100mL 40% ethanol aqueous solution, stirred and mixed at 50℃ to form an antibacterial finishing liquid;

[0128] The filaments were first immersed in the three-proofing finishing liquid for 10min, taken out and dried at 80℃ for 30min; then immersed in the antibacterial finishing liquid for 10min, taken out and dried at 80℃ for 30min to obtain the three-proofing antibacterial filaments.

[0129] Example 5

[0130] A method for preparing three-proofing antibacterial yarns, comprising the following steps:

[0131] 10 filaments obtained in Examples 1-4 and Comparative Examples 1-6 were respectively plying and twisting to obtain three-proofing antibacterial yarns, with twist direction being S twist and twist degree being 200 twists per meter, and fineness being 20D.

[0132] Example 6

[0133] A method for preparing three-proofing antibacterial double-layered children's clothing fabric, comprising the following steps:

[0134] The three-proofing antibacterial yarns prepared in Example 5 were used as the surface-organizing warp yarns and weft yarns, with warp yarn density being 44 yarns per cm and weft yarn density being 30 yarns per cm; plain weave was woven to form the outer surface of the fabric;

[0135] The antibacterial moisture-conducting and quick-drying yarns were used as the inside-organizing warp yarns and weft yarns, with warp yarn density being 21 yarns per cm and weft yarn density being 18 yarns per cm; openwork weave (structure as shown in Figure 1 ) was woven to form the inner surface of the fabric;

[0136] The outer surface and the inner surface were connected together by using the linking double-layered weave to form the three-proofing antibacterial double-layered children's clothing fabric;

[0137] The arrangement ratio of the surface-organizing warp yarns to the inside-organizing warp yarns was 1:1, and the arrangement ratio of the surface-organizing weft yarns to the inside-organizing weft yarns was 1:1.

[0138] Comparative Example 7

[0139] The three-proofing antibacterial yarns in Example 6 were adjusted to be conventional pure polyacrylonitrile yarns (0.8D pure polyacrylonitrile filaments, 10 filaments plying and twisting, twist direction being S twist, twist degree being 200 twists per meter, 20D), to obtain the fabric; then a PU layer was hot-pressed on the surface of the fabric, with thickness being 80μm, hot-pressing temperature being 150℃, and hot-pressing time being 30s, to obtain the three-proofing fabric.

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

[0141] Table 1 Performance testing results of the obtained three-proofing antibacterial fabric

[0142]

[0143] Table 2 Performance after rubbing 10000 times

[0144]

[0145] As shown in Table 1, the three-proofing effect of Example 4 is slightly worse than that of Examples 1-3, which is due to the decrease of the amount of methyl triethoxysilane MTMS, which reduces the synergistic effect of the silicon-oxygen network composite structure and the silica micro-nano rough structure. The poor effects of Comparative Examples 1 and 2 are also based on this.

[0146] As shown in Table 2, the appropriate proportion of the auxiliary agent can effectively maintain the three-proofing, antibacterial and other properties of the fabric. The performance of Comparative Example 3 decreases significantly after rubbing, which is due to the photocatalytic property of titanium oxide, which is easy to produce photodegradation and has poor durability.

[0147] Although the present application has been disclosed with the preferred embodiments as above, it is not intended to limit the present application, and any person skilled in the art can make various modifications and modifications without departing from the spirit and scope of the present application, and therefore the protection scope of the present application should be defined by the claims.

Claims

1. 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 is used as the warp and weft yarn to weave a plain weave to form the outer surface of the fabric; The antibacterial, moisture-conducting, and quick-drying yarns are used as the warp and weft yarns to weave a porous structure to form the inner surface of the fabric. The outer surface and the inner surface are connected together with a double-layer structure to form a triple-proof antibacterial double-layer children's clothing fabric; The preparation method of the triple-proof antibacterial yarn includes the following steps: The triple-proof antibacterial filaments are twisted together, with the number of twisted strands being 20-30, the twist direction being S twist or Z twist, and the twist degree being 200-800 twists / m, to obtain the triple-proof antibacterial yarn; The preparation method of the triple-proof antibacterial filament comprises the following steps: The polyacrylonitrile powder and the solvent are mixed evenly to obtain a polyacrylonitrile spinning solution; 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-spinned to obtain a three-proof antibacterial filament; The triple-proofing finishing agent is a mixture of methyltriethoxysilane, nano-silica 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; the mass ratio of polyacrylonitrile spinning solution, triple-proofing finishing agent and antibacterial agent is 100:3-10:2-5.

2. The method according to claim 1, characterized in that The outer surface of the fabric has a warp density of 40-50 yarns / cm and a weft density of 25-35 yarns / cm.

3. The method according to claim 1, characterized in that The inner surface of the fabric has a warp density of 20-30 yarns / cm and a weft density of 15-20 yarns / cm.

4. The method according to claim 1, wherein The arrangement ratio of the surface warp yarn and the lining warp yarn is 1:1, and the arrangement ratio of the surface weft yarn and the lining weft yarn is 1:

1.

5. The method according to claim 1, wherein The fineness of the antibacterial, moisture-wicking and quick-drying yarn is 10-40D.

6. The method according to claim 1, characterized in that The porous tissue is one of the following: honeycomb tissue, openwork tissue, and lattice tissue.

7. A triple-proof and antibacterial double-layer children's clothing fabric prepared by the method according to any one of claims 1 to 6.

8. Use of the triple-proof antibacterial double-layer children's clothing fabric according to claim 7 in clothing textiles.

9. A jacket, characterized in that: The triple-proof antibacterial double-layer children's clothing fabric according to claim 7 is used.

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