Lightweight warm-keeping comfortable garment material and preparation method thereof

Abstract

The invention relates to a light warm-keeping comfortable garment fabric and a preparation method thereof.The light warm-keeping comfortable garment fabric comprises a fabric body and a composite coating, the composite coating is formed by coating the surface of the fabric body with a composite coating, and the composite coating comprises a fluorine-containing emulsion, a composite filler component, a dispersing agent and a flatting agent; the composite filler component comprises a composite heat insulation microsphere and a nano filler, and the composite heat insulation microsphere comprises polystyrene and titanium dioxide. The warm-keeping fabric has the effect of improving the overall warm-keeping performance of the fabric.

Description

Technical Field

[0001] This application relates to the field of fabrics, and particularly to a lightweight, warm and comfortable clothing fabric and its preparation method. Background Art

[0002] Clothing fabric refers to various materials used to make clothing. It is the main part of clothing and directly affects the appearance, texture, performance and wearing experience of clothing.

[0003] Currently, there is a common contradiction between the heaviness and warmth retention of warm clothing fabrics on the market. Most warm fabrics sacrifice the breathability of the fabric in order to improve the heat preservation performance, resulting in a poor wearing experience. With the development of technology, the research and development of nanotechnology and new fibers have become the key to improving this situation. Summary of the Invention

[0004] In order to further improve the warmth retention performance of the fabric, this application provides a lightweight, warm and comfortable clothing fabric and its preparation method.

[0005] In the first aspect, a lightweight, warm and comfortable clothing fabric provided by this application adopts the following technical solution: A lightweight, warm and comfortable clothing fabric includes a fabric body and a composite coating. The composite coating is formed by coating a composite coating on the surface of the fabric body. The composite coating includes a fluorine-containing emulsion, a composite filler component, a dispersant and a leveling agent. The composite filler component includes composite heat-insulating microspheres and nano-fillers. The composite heat-insulating microspheres include polystyrene and titanium dioxide; the fabric body includes 60%-70% by mass of polyester fiber and 30%-40% by mass of wool fiber.

[0006] By adopting the above technical solution, using ultrafine denier polyester fiber as the main component and blending with a certain proportion of natural wool fiber, the fabric body is prepared by a blending process, which has a more delicate touch and better warmth retention performance; after coating the composite coating on the surface of the fabric body, a composite coating is formed on the surface of the fabric body. The composite coating is added with hollow heat-insulating microspheres. Using titanium dioxide as the hollow microsphere and growing it on polystyrene to prepare the hollow heat-insulating microsphere. Titanium dioxide has a low thermal conductivity, which can reduce heat transfer, and has stable chemical properties. Polystyrene is an amorphous irregular polymer with low crystallinity. The side group of polystyrene is a large benzene ring, and the molecular weight is entangled, so heat is difficult to transfer, and thus it also has a low thermal conductivity. Therefore, the hollow heat-insulating microspheres prepared by combination and attached to the fiber surface of the fabric body can effectively reduce the heat transfer of the fabric, thereby improving the warmth retention performance and stability of the fabric body.

[0007] Preferably, the composite heat-insulating microspheres are prepared by the following method: After mixing polyvinylpyrrolidone with water, styrene is added, and the temperature is raised and stirred to obtain a mixed solution; potassium persulfate is added to the mixed solution for reaction to obtain a polystyrene emulsion; the polystyrene emulsion is added to anhydrous ethanol, and ammonia water is added while stirring to obtain a reaction solution. Then, tetrabutyl titanate and ethanol are added to the reaction solution for reaction, centrifuged and washed, and prefabricated microspheres are obtained after drying; the prefabricated microspheres are calcined, and composite heat-insulating microspheres are obtained after cooling.

[0008] By adopting the above technical scheme, first, the dispersion polymerization method is used to prepare polystyrene using polyvinylpyrrolidone and styrene. Then, using polystyrene as a template, through the hydrolysis and condensation of tetrabutyl titanate, the formed titanium dioxide grows attached to the polystyrene template, thereby obtaining composite heat-insulating microspheres, which have good stability and heat-insulating performance, and can be evenly dispersed in the system and stably combined with the fibers of the fabric body, thereby improving the heat preservation and heat-insulating performance of the fabric.

[0009] Preferably, the mass ratio between the polyvinylpyrrolidone and styrene is (0.22 - 0.24):1.

[0010] By adopting the above technical scheme, preferably, the mass ratio between the polyvinylpyrrolidone and styrene is within the above range, which can further improve the stability of the prepared composite heat-insulating microspheres.

[0011] Preferably, the mass concentration of tetrabutyl titanate in the reaction solution is 18 - 22wt%.

[0012] By adopting the above technical scheme, preferably, the concentration of tetrabutyl titanate in the reaction solution is within the above range, and the particle size of the prepared titanium dioxide microspheres is more uniform, thereby improving the stability of the composite heat-insulating microspheres.

[0013] Preferably, the nano-filler includes silica and silane coupling agent.

[0014] By adopting the above technical scheme, the thermal conductivity of silica is low. Adding it to the system can be compounded with the composite heat-insulating microspheres to improve the overall heat preservation performance of the system. Using silica as a filler, and then combining it with silica through a silane coupling agent. The Si - O bond energy in the silane coupling agent is high, and the molecular chain has large flexibility. After grafting onto the surface of silica and then adding it to the composite coating as a nano-filler, it can improve the overall waterproof property of the system and has good dispersion performance, further improving the overall stability of the system.

[0015] Preferably, the nano-filler is prepared by the following method: Mix tetraethyl orthosilicate and absolute ethanol, heat up and then add water, stir and react, adjust the system to neutral, then add silane coupling agent, continue to stir and react, and after the reaction, centrifuge, wash and dry to obtain nano-fillers.

[0016] Preferably, the mass ratio between the nano-fillers and the composite heat-insulating microspheres is (0.3 - 0.4):1.

[0017] By adopting the above technical solution, preferably, when the mass ratio between the nano-fillers and the composite heat-insulating microspheres is within the above range, the overall stability of the prepared composite filler components can be further improved.

[0018] Preferably, the mass concentration of the composite filler components in the composite coating is 5 - 6 wt%.

[0019] By adopting the above technical solution, preferably, when the mass concentration of the composite filler components in the composite coating is within the above range, the stability of the prepared composite coating can be further improved.

[0020] Preferably, the composite coating is prepared by the following method: Mix the composite emulsifier with water to obtain an emulsifier solution. Mix the emulsifier solution, dodecafluoroheptyl methacrylate, butyl acrylate, methyl methacrylate, and vinyltrimethoxysilane, and then perform ultrasonic treatment and magnetic stirring to obtain a prefabricated emulsion; add butyl acrylate, methyl methacrylate, 2-hydroxyethyl methacrylate, and sodium bicarbonate to the prefabricated emulsion, stir to obtain a fluorine-containing emulsion, add the composite filler components, dispersant, and leveling agent to the fluorine-containing emulsion and mix, heat up and add potassium persulfate, keep warm for reaction and then cool down, and after filtration, obtain the composite coating.

[0021] By adopting the above technical solution, using dodecafluoroheptyl methacrylate, butyl acrylate, and methyl methacrylate as monomers and the other components as functional monomers, and adopting the method of emulsion polymerization to prepare a fluorine-containing emulsion, and then preparing a composite coating. The composite coating modified by fluorosilane has good waterproof and moisture-permeability properties, and the composite filler components have good heat-insulating function and stability. After being combined with the fabric, the fabric has good heat-insulating, waterproof, and breathable properties.

[0022] In the second aspect, the present application provides a preparation method for a lightweight, warm, and comfortable clothing fabric, adopting the following technical solution: A preparation method for a lightweight, warm, and comfortable clothing fabric includes the following steps: Blend polyester fiber and wool fiber and perform steam treatment to obtain a fabric body. Immerse the fabric body in the composite coating, let it stand, take out the fabric body, and dry it to form a composite coating on the surface of the fabric body, thus obtaining the lightweight, warm, and comfortable clothing fabric.

[0023] By adopting the above technical solution, steam treatment is introduced to optimize the physical interaction between fibers and enhance the elasticity and abrasion resistance of the fabric.

[0024] In summary, the present application includes at least one of the following beneficial technical effects: 1. After applying the composite coating on the fabric body, a composite coating is obtained. The composite components in the composite coating include hollow heat-insulating microspheres and nano-fillers. Among them, the hollow heat-insulating microspheres use titanium dioxide as the hollow microsphere system and grow on polystyrene to obtain hollow heat-insulating microspheres. Titanium dioxide has a low thermal conductivity, which can reduce heat transfer, and has stable chemical properties. Polystyrene is an amorphous irregular polymer with low crystallinity, and polystyrene also has a low thermal conductivity. After the composite-prepared hollow heat-insulating microspheres are combined with the fabric body, the fabric has good heat-insulating performance and stability; 2. Nano-fillers are also added in the present application. Using silica as the filler matrix, after treating the surface of silica with a silane coupling agent, the dispersion performance in the system is improved. At the same time, the hydrophobic performance of the system is improved, so that the waterproof performance of the fabric is improved; 3. Using dodecafluoroheptyl methacrylate, butyl acrylate, and methyl methacrylate as monomers and the remaining components as functional monomers, a composite coating is prepared by emulsion polymerization. The composite coating modified by fluorosilane has good waterproof and moisture-permeable properties. Detailed implementation manners

[0025] The following further elaborates on the present application with reference to examples: Raw material description: All raw materials in the examples can be obtained through commercial channels; Among them, the fabric body is a blend of 65% polyester fiber and 35% wool fiber, and is prepared after steam treatment, with a fiber diameter of 0.8 microns; the composite emulsifier is a mixture of emulsifier OP-10 and emulsifier AEO-9 with a mass ratio of 1:1, the dispersant is polyethylene glycol (CAS No.: 25322-68-3), and the leveling agent is polydimethylsiloxane (CAS No.: 9006-65-9).

[0026] Example 1 Preparation of nano-fillers: Mix 50 g of tetraethyl orthosilicate and 100 g of absolute ethanol, add ammonia water to adjust the pH of the system to 9, heat up to 50 °C, then add 100 g of deionized water, stir and react for 4 h, then use glacial acetic acid to adjust the system to neutral, and then add 5 g of silane coupling agent KH-560 (CAS No.: 2530-83-8), continue to stir and react at a temperature of 50 °C. After reacting for 4 h, centrifuge and wash with absolute ethanol 3 times, and then dry in an environment of 60 °C to obtain nano-fillers.

[0027] Prepare composite heat-insulating microspheres: Mix 11 g of polyvinylpyrrolidone (CAS No.: 9003-39-8) with 100 g of deionized water, add 50 g of styrene, heat up to 70 °C and stir evenly to obtain a mixed solution; add 0.75 g of potassium persulfate to the mixed solution, and under the protection of nitrogen, continue to react at a temperature of 70 °C for 24 h to obtain a polystyrene emulsion; add the polystyrene emulsion to 50 g of absolute ethanol, add 5 g of ammonia water while stirring to obtain a reaction solution, then add tetrabutyl titanate and 20 g of ethanol to the reaction solution, the mass concentration of tetrabutyl titanate in the reaction solution is 18 wt%, react in an environment of 50 °C, centrifuge after reaction, wash with deionized water, and dry to obtain prefabricated microspheres; put the prefabricated microspheres into a crucible and calcine in a muffle furnace at 500 °C for 2 h, and cool down to 25 °C to obtain composite heat-insulating microspheres.

[0028] Prepare composite filler components: Mix 11.54 g of nano-fillers with 38.46 g of composite filler components to obtain composite filler components.

[0029] Prepare composite coatings: After mixing 27.5 g of the composite emulsifier with 60 g of deionized water, an emulsifier solution is obtained. The emulsifier solution, 100 g of dodecafluoroheptyl methacrylate (CAS No.: 2261-99-6), 60 g of butyl acrylate (CAS No.: 141-32-2), 40 g of methyl methacrylate (CAS No.: 80-62-6), and 20 g of vinyltrimethoxysilane (CAS No.: 2768-02-7) are mixed and then ultrasonically treated for 30 min, followed by magnetic stirring for 30 min to obtain a prefabricated emulsion; 48 g of butyl acrylate, 32 g of methyl methacrylate, 15 g of 2-hydroxyethyl methacrylate (CAS No.: 868-77-9), and 10 g of sodium bicarbonate are mixed with the above prefabricated emulsion to obtain a fluorine-containing emulsion. The composite filler component, 10 g of dispersant, and 10 g of leveling agent are added to the above fluorine-containing emulsion. The mass concentration of the composite filler component is 5 wt%. Then, the temperature is raised to 50 °C and kept warm for 20 min. The temperature is further raised to 70 °C, 5 g of potassium persulfate is added, and it is kept warm for 30 min. Then, the prefabricated emulsion prepared above and 10 g of potassium persulfate are added, and the reaction is carried out at 80 °C for 60 min while keeping warm. After the reaction, the temperature is lowered to 30 °C, and after filtering through a 200-mesh sieve, a composite coating is obtained.

[0030] Prepare a lightweight, warm, and comfortable clothing fabric: The fabric body is immersed in the composite coating and left standing for 20 h. Then, the fabric body is taken out and dried in a temperature environment of 50 °C. A composite coating is formed on the surface of the fabric body to obtain a lightweight, warm, and comfortable clothing fabric.

[0031] Example 2 Prepare nano-fillers: 50 g of tetraethyl orthosilicate and 100 g of absolute ethanol are mixed, ammonia water is added to adjust the pH of the system to 9, the temperature is raised to 50 °C, 100 g of deionized water is added, and the mixture is stirred and reacted for 4 h. Then, glacial acetic acid is used to adjust the system to neutrality, and then 5 g of KH-560 is added. The reaction continues to be stirred at a temperature of 50 °C. After 4 h of reaction, it is centrifugally washed 3 times with absolute ethanol and then dried in an environment of 60 °C to obtain nano-fillers.

[0032] Prepare composite heat-insulating microspheres: After mixing 12 g of polyvinylpyrrolidone with 100 g of deionized water, 50 g of styrene was added, and the temperature was raised to 70 °C and stirred evenly to obtain a mixed solution; 0.75 g of potassium persulfate was added to the mixed solution, and under the condition of nitrogen protection, the reaction was continued at 70 °C for 24 h to obtain a polystyrene emulsion; the polystyrene emulsion was added to 50 g of absolute ethanol, and 5 g of ammonia water was added while stirring to obtain a reaction solution, then tetrabutyl titanate and 20 g of ethanol were added to the reaction solution, the mass concentration of tetrabutyl titanate in the reaction solution was 22 wt%, the reaction was carried out at 50 °C, centrifuged after the reaction, washed with deionized water, and dried to obtain prefabricated microspheres; the prefabricated microspheres were placed in a crucible and calcined in a muffle furnace at 500 °C for 2 h, and after cooling to 25 °C, composite heat-insulating microspheres were obtained.

[0033] Prepare the composite filler component: After mixing 14.29 g of nano-filler with 35.71 g of the composite filler component, the composite filler component was obtained.

[0034] Prepare the composite coating: After mixing 27.5 g of the composite emulsifier with 60 g of deionized water, an emulsifier solution was obtained. The emulsifier solution, 100 g of dodecafluoroheptyl methacrylate, 60 g of butyl acrylate, 40 g of methyl methacrylate, and 20 g of vinyltrimethoxysilane were mixed and ultrasonically treated for 30 min, and then magnetically stirred for 30 min to obtain a prefabricated emulsion; 48 g of butyl acrylate, 32 g of methyl methacrylate, 15 g of 2-hydroxyethyl methacrylate, and 10 g of sodium bicarbonate were mixed with the above prefabricated emulsion to obtain a fluorine-containing emulsion. The composite filler component, 10 g of dispersant and 10 g of leveling agent were added to the above fluorine-containing emulsion, the mass concentration of the composite filler component was 6 wt%, then the temperature was raised to 50 °C, kept warm for 20 min, continued to be raised to 70 °C, 5 g of potassium persulfate was added, kept warm for 30 min, then the above-prepared prefabricated emulsion and 10 g of potassium persulfate were added, and the reaction was carried out at 80 °C for 60 min. After the reaction, the temperature was lowered to 30 °C, and after filtering with a 200-mesh sieve, the composite coating was obtained. Prepare a lightweight, warm and comfortable clothing fabric: The fabric body was immersed in the composite coating and left standing for 20 h. The fabric body was taken out and dried in a temperature environment of 50 degrees Celsius. A composite coating was formed on the surface of the fabric body to obtain a lightweight, warm and comfortable clothing fabric.

[0035] Example 3 Prepare the nano-filler: Mix 50 g of tetraethyl orthosilicate and 100 g of absolute ethanol, add ammonia water to adjust the pH of the system to 9, heat up to 50 °C, then add 100 g of deionized water, stir and react for 4 h, then use glacial acetic acid to adjust the system to neutral, then add 5 g of KH-560, continue to stir and react at 50 °C, after reacting for 4 h, wash with absolute ethanol by centrifugation 3 times, and then dry in an environment of 60 °C to obtain nano-fillers.

[0036] Prepare composite heat-insulating microspheres: After mixing 11.5 g of polyvinylpyrrolidone with 100 g of deionized water, add 50 g of styrene, heat up to 70 °C and stir evenly to obtain a mixed solution; add 0.75 g of potassium persulfate to the mixed solution, and under the condition of nitrogen protection, continue to react at 70 °C for 24 h to obtain a polystyrene emulsion; add the polystyrene emulsion to 50 g of absolute ethanol, add 5 g of ammonia water while stirring to obtain a reaction solution, then add tetrabutyl titanate and 20 g of ethanol to the reaction solution, the mass concentration of tetrabutyl titanate in the reaction solution is 20 wt%, react in an environment of 50 °C, centrifuge after reaction, wash with deionized water, and dry to obtain prefabricated microspheres; put the prefabricated microspheres into a crucible, calcine in a muffle furnace at 500 °C for 2 h, and cool down to 25 °C to obtain composite heat-insulating microspheres.

[0037] Prepare composite filler components: After mixing 12.96 g of nano-fillers with 37.04 g of composite filler components, composite filler components are obtained.

[0038] Prepare composite coatings: After mixing 27.5 g of composite emulsifier with 60 g of deionized water, an emulsifier solution is obtained. Mix the emulsifier solution, 100 g of dodecafluoroheptyl methacrylate, 60 g of butyl acrylate, 40 g of methyl methacrylate, and 20 g of vinyltrimethoxysilane, and perform ultrasonic treatment for 30 min, then magnetic stirring for 30 min to obtain a prefabricated emulsion; mix 48 g of butyl acrylate, 32 g of methyl methacrylate, 15 g of 2-hydroxyethyl methacrylate, and 10 g of sodium bicarbonate with the above prefabricated emulsion to obtain a fluorine-containing emulsion. Add the composite filler components, 10 g of dispersant and 10 g of leveling agent to the above fluorine-containing emulsion, the mass concentration of the composite filler components is 5.5 wt%, then heat up to 50 °C, keep warm for 20 min, continue to heat up to 70 °C, add 5 g of potassium persulfate, keep warm for 30 min, then add the above-prepared prefabricated emulsion and 10 g of potassium persulfate, keep warm and react at 80 °C for 60 min, cool down to 30 °C after reaction, and filter with a 200-mesh sieve to obtain composite coatings.

[0039] Prepare lightweight, warm and comfortable clothing fabrics: Soak the fabric body in the composite coating, let it stand for 20 h, take out the fabric body, and dry it in a temperature environment of 50 °C. A composite coating is formed on the surface of the fabric body to obtain a lightweight, warm and comfortable clothing fabric.

[0040] Example 4 Example 4 is based on Example 3. When preparing the composite heat-insulating microspheres in Example 4, 9.5 g of polyvinylpyrrolidone is used.

[0041] Example 5 Example 5 is based on Example 3. When preparing the composite heat-insulating microspheres in Example 5, 13 g of polyvinylpyrrolidone is used.

[0042] Example 6 Example 6 is based on Example 3. When preparing the composite heat-insulating microspheres in Example 6, the mass concentration of tetrabutyl titanate in the reaction solution is 15 wt%.

[0043] Example 7 Example 7 is based on Example 3. When preparing the composite heat-insulating microspheres in Example 7, the mass concentration of tetrabutyl titanate in the reaction solution is 25 wt%.

[0044] Example 8 Example 8 is based on Example 3. When preparing the composite filler component in Example 8, the nano filler is replaced with an equal amount of ordinary nano silica.

[0045] Example 9 Example 9 is based on Example 3. When preparing the composite filler component in Example 9, the addition amount of the nano filler is 8.33 g, and the addition amount of the composite heat-insulating microspheres is 41.67 g.

[0046] Example 10 Example 10 is based on Example 3. When preparing the composite filler component in Example 10, the addition amount of the nano filler is 16.67 g, and the addition amount of the composite heat-insulating microspheres is 33.33 g.

[0047] Example 11 Example 11 is based on Example 3. When preparing the composite coating in Example 11, the mass concentration of the composite filler is 3 wt%.

[0048] Example 12 Example 12 is based on Example 3. When preparing the composite coating in Example 12, the mass concentration of the composite filler is 9 wt%.

[0049] Comparative Example 1 Taking Example 3 as a reference, in Comparative Example 1, when preparing the composite filler component, the composite thermal insulation microspheres were replaced with nano-titanium dioxide.

[0050] Comparative Example 2 Taking Example 3 as a reference, in Comparative Example 2, when preparing the composite coating, the following method was adopted: After mixing waterborne polyurethane, composite filler, dispersant and leveling agent, stirring was carried out to obtain the composite coating, wherein the mass concentration of the composite filler was 5.5 wt%, the mass concentration of the dispersant was 1 wt%, and the mass concentration of the leveling agent was 1 wt%, and the rest was waterborne polyurethane.

[0051] Performance detection test The following performance tests were carried out on the specimens of Examples 1-12 and Comparative Examples 1-2: (1) Thermal insulation performance Using a Hotdisk thermal constant analyzer, the thermal conductivity of the fabric of each specimen was detected. Each specimen was tested three times, and the average value was taken, and the test results were filled in Table 1.

[0052] (2) Air permeability Taking "GB / T 5453-1997 Determination of air permeability of textiles fabrics" as the detection standard, the air permeability of the fabric was tested, and the measurement area was 20 cm 2 , each specimen was tested 3 times, and the measured values were averaged and filled in Table 1.

[0053] (3) Hydrophobic property The contact angle of each specimen was measured. Each specimen was tested three times, and the average value was taken, and the test results were filled in Table 1.

[0054] Table 1 Performance test results of Examples 1-12 and Comparative Examples 1-2 Test Items Thermal Conductivity / (W / mK) <![CDATA[Air permeability / (mm·s -1 )]]> Hydrophobic Angle / ° Example 1 0.0544 624 131 Example 2 0.0543 621 130 Example 3 0.0540 627 133 Example 4 0.0592 589 127 Example 5 0.0598 591 127 Example 6 0.0601 594 125 Example 7 0.0604 593 126 Example 8 0.0622 580 121 Example 9 0.0614 583 124 Example 10 0.0617 585 122 Example 11 0.0654 560 117 Example 12 0.0660 561 116 Comparative Example 1 0.0892 547 112 Comparative Example 2 0.0625 517 110 Combined with Table 1, it can be seen that the thermal conductivities of Examples 1-3 are all 0.0550 W / mK or less, indicating that the clothing fabric prepared in this application has good thermal insulation performance. The air permeabilities of Examples 1-3 are all 620 mm·s -1 and above, indicating that the clothing fabric prepared in this application has good air permeability. The hydrophobic angles of Examples 1-3 are all 130° or above, indicating that the clothing fabric prepared in this application has good water washing resistance.

[0055] In Example 4 and Example 5 during the preparation of the composite heat-insulating microspheres, the mass ratio between polyvinylpyrrolidone and styrene is not within the scope defined in this application. When the amount of polyvinylpyrrolidone used is too small, the polyvinyl emulsion coagulates and the stability of the system decreases; when the amount of polyvinylpyrrolidone used is too large, it has an impact on the nucleation of styrene and it is difficult to obtain complete small spheres, and the stability of the system decreases. Therefore, the performance of Example 4 and Example 5 both decreases.

[0056] In Example 6 and Example 7 during the preparation of the composite heat-insulating microspheres, the mass concentration of tetrabutyl titanate in the reaction solution is not within the scope defined in this application. When the concentration of tetrabutyl titanate is too high, the particle size of the prepared composite heat-insulating microspheres is too large and the particle size uniformity decreases, affecting the stability of the system; when the concentration of tetrabutyl titanate is too low, the particle size of the prepared composite heat-insulating microspheres is too small and they agglomerate in the system, which also affects the stability of the system. Therefore, the performance of Example 6 and Example 7 both decreases.

[0057] In Example 8, the nano-filler was replaced with ordinary nano-silica. The nano-silica without being modified by a silane coupling agent agglomerated in the system, affecting the overall stability of the system. Therefore, the performance of Example 8 decreased.

[0058] In Example 9 and Example 10 during the preparation of the composite filler component, the mass ratio between the nano-filler and the composite heat-insulating microspheres is not within the scope defined in this application. When the content of the nano-filler is too much or too little, it is difficult for both of them to further synergistically improve the overall stability of the system. Therefore, the performance of Example 9 and Example 10 both decreases.

[0059] In Example 11 and Example 12 during the preparation of the composite coating, the addition amount of the composite filler is not within the scope defined in this application. When the content of the composite filler is too small, both the heat-insulating effective component and the component for improving the hydrophobic property decrease, thereby affecting the overall heat-insulating performance and hydrophobic property of the composite coating; when the content of the composite filler is too large, the composite filler agglomerates in the system, affecting the overall stability of the system. Therefore, the performance of Example 11 and Example 12 both decreases.

[0060] In Comparative Example 1, the composite heat-insulating microspheres were replaced with ordinary nano-titanium dioxide, and it was difficult to further improve the heat-insulating performance.

[0061] In Comparative Example 2, waterborne polyurethane was used as the matrix of the composite coating, and it was difficult to further improve the moisture permeability.

[0062] This specific embodiment is only an interpretation of the present application and does not limit the present application. Through the above description, relevant staff can make various changes and modifications completely within the scope without departing from the technical idea of this application. The technical scope of this application is not limited to the content in the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A lightweight, warm and comfortable clothing fabric, characterized by: The invention comprises a fabric body and a composite coating, wherein the composite coating is formed by coating a composite coating on the surface of the fabric body, the composite coating comprises a fluorine-containing emulsion, a composite filler component, a dispersant and a leveling agent, the composite filler component comprises composite thermal insulation microspheres and nanofillers, and the composite thermal insulation microspheres comprise polystyrene and titanium dioxide; the fabric body comprises polyester fibers with a mass ratio of 60%-70% and wool fibers with a mass ratio of 30%-40%.

2. A lightweight, warm and comfortable clothing fabric according to claim 1, characterized in that: The composite heat-insulating microspheres are prepared by the following method: After polyvinyl pyrrolidone is mixed with water, styrene is added, and the mixture is heated and stirred to obtain a mixed solution; potassium persulfate is added to the mixed solution for reaction to obtain a polystyrene emulsion; the polystyrene emulsion is added to anhydrous ethanol, and ammonia water is added while stirring to obtain a reaction solution; then tetrabutyl titanate and ethanol are added to the reaction solution for reaction, centrifugation and washing are performed, and prefabricated microspheres are obtained after drying; the prefabricated microspheres are calcined, and composite heat-insulating microspheres are obtained after cooling.

3. A lightweight, warm and comfortable clothing fabric according to claim 2, characterized in that: The mass ratio of the polyvinyl pyrrolidone to styrene is (0.22-0.24):

1.

4. The lightweight, warm and comfortable clothing fabric according to claim 2, characterized in that: The mass concentration of tetrabutyl titanate in the reaction solution is 18-22wt%.

5. The lightweight, warm and comfortable clothing fabric according to claim 1, characterized in that: The nano filler comprises silicon dioxide and a silane coupling agent.

6. The lightweight, warm and comfortable clothing fabric according to claim 1, characterized in that: The nanofiller is prepared by the following method: Mix ethyl orthosilicate and anhydrous ethanol, add water after heating, stir to react, adjust the system to neutral, then add silane coupling agent, continue to stir to react, centrifuge, wash and dry after the reaction to obtain nano filler.

7. A lightweight, warm and comfortable clothing fabric according to claim 6, characterized in that: The mass ratio between the nano filler and the composite thermal insulation microspheres is (0.3-0.4):

1.

8. The lightweight, warm and comfortable clothing fabric according to claim 1, characterized in that: The mass concentration of the composite filler component in the composite coating is 5-6wt%.

9. The lightweight, warm and comfortable clothing fabric according to claim 1, characterized in that: The composite coating is prepared by the following method: The composite emulsifier is mixed with water to obtain an emulsifier solution, the emulsifier solution, dodecafluoroheptyl methacrylate, butyl acrylate, methyl methacrylate and vinyl trimethoxysilane are mixed, ultrasonically treated and magnetically stirred to obtain a prefabricated emulsion; butyl acrylate, methyl methacrylate, hydroxyethyl methacrylate and sodium bicarbonate are added to the prefabricated emulsion, stirred to obtain a fluorine-containing emulsion, the composite filler component, dispersant and leveling agent are added to the fluorine-containing emulsion, the mixture is heated and potassium persulfate is added, the temperature is lowered after the reaction is maintained, and the composite coating is obtained after filtering.

10. A lightweight, warm and comfortable clothing fabric used in claims 1-9, characterized in that: The steps include: The polyester fiber and the wool fiber are blended and treated with steam to obtain a fabric body, the fabric body is immersed in a composite coating, left to stand, the fabric body is taken out, dried, and a composite coating is formed on the surface of the fabric body to obtain a lightweight, warm and comfortable clothing fabric.