Layered fabric capable of locking temperature and storing heat and down jacket

Abstract

The invention is applicable to the technical field of fabrics, and provides a temperature-locking and heat-storing layered fabric and a down jacket, the temperature-locking and heat-storing layered fabric comprises a far-infrared nylon base fabric layer and a heat-storing printing layer locally arranged on the far-infrared nylon base fabric layer, slurry of the heat storage printing layer is prepared from the following raw materials: modified aerogel, modified nano Tai Chi stone, nano graphite, a dispersing agent, a cross-linking agent, a thickening agent, modified polyethylene glycol and water. According to the temperature-locking heat-storage layered fabric disclosed by the invention, the far infrared nylon base cloth layer and the heat storage printing layer are arranged, so that internal heat energy is reflected, circulating temperature locking and heat storage are realized, and the heat storage effect is good; modified aerogel is added into slurry of the heat storage printing layer, the heat storage printing layer has a rich nano porous structure and can effectively isolate heat transfer, modified nano Tai Chi stone is added, heat of a human body can be absorbed and stored, energy loss is avoided, far infrared rays are emitted, and the effects of heating and keeping warm are achieved. By adding nano-graphite and modified polyethylene glycol, the heat storage and far infrared effects are further improved.

Description

Technical Field

[0001] The invention belongs to the technical field of fabrics, and in particular relates to a layered fabric and a down jacket capable of locking in temperature and storing heat. Background Art

[0002] In recent years, with the improvement of living standards and the development of science and technology, people's requirements for clothing have become higher. Consumers are seeking clothing that is comfortable and multifunctional. In the autumn and winter seasons, people often need to wear warm clothing such as thermal casual pants. Such clothing is often made of thicker fabrics to improve the warmth effect.

[0003] When wearing too many clothes, the movement will become slow. With the development of technology, lightweight down jackets have begun to appear on the market, but the warmth retention effect will be reduced to a certain extent. Therefore, the present application provides a layered fabric that locks in temperature and stores heat to improve the warmth retention effect. Summary of the Invention

[0004] The present invention provides a layered fabric capable of locking in heat and storing heat, aiming to solve the above-mentioned problems.

[0005] The present invention is achieved as follows: a temperature-locking and heat-storing layered fabric comprises a far-infrared nylon base fabric layer, preferably 20D / 24F*20D / 24F, and a heat-storage print layer is partially provided on the far-infrared nylon base fabric layer. The slurry of the heat-storage print layer comprises the following raw materials in parts by weight: 2-5 parts of modified aerogel, 3-7 parts of modified nano Tai Chi stone, 1-5 parts of nano graphite, 4-8 parts of dispersant, 2-6 parts of cross-linking agent, 1-3 parts of thickener, 4-10 parts of modified polyethylene glycol, and 80-100 parts of water.

[0006] Preferably, the slurry of the heat storage print layer includes the following raw materials in parts by weight: 2.5-4.5 parts of modified aerogel, 4-6 parts of modified nano Tai Chi stone, 2-4 parts of nano graphite, 5-7 parts of dispersant, 3-5 parts of cross-linking agent, 1.5-2.5 parts of thickener, 5-9 parts of modified polyethylene glycol, and 85-95 parts of water.

[0007] Preferably, the slurry of the heat storage print layer includes the following raw materials in parts by weight: 3.5 parts of modified aerogel, 5 parts of modified nano Tai Chi stone, 3 parts of nano graphite, 6 parts of dispersant, 4 parts of cross-linking agent, 2 parts of thickener, 7 parts of modified polyethylene glycol, and 90 parts of water.

[0008] Preferably, the far-infrared nylon base fabric layer is pretreated before being locally coated with the heat storage print layer, and the pretreatment method is: soaking the far-infrared nylon base fabric layer in a sodium hydroxide solution with a concentration of 1-5 mol / L for 1-2 hours at a temperature of 30-40°C, washing it after soaking, and drying it at 40-50°C; soaking it in the sodium hydroxide solution increases the pores inside it, forming a hot air layer, reducing the thermal conductivity of the fabric, improving the warmth retention rate, and facilitating the full and tight adhesion of the slurry of the heat storage print layer.

[0009] Preferably, the preparation method of the modified aerogel is as follows: 10-20 parts of tetraethyl orthosilicate, 40-50 parts of deionized water, 80-100 parts of ethanol, and 5-10 parts of trimethylchlorosilane are mixed and stirred uniformly, then a dilute hydrochloric acid solution with a concentration of 10-20% is added, the pH value of the mixed solution is adjusted to 2-4, and the reaction is stirred at 300-400 r / min for 1-2 hours, and then a dilute ammonia solution with a concentration of 10-15% is added to adjust the pH value of the mixed solution to 8-9, and the mixture is stirred uniformly to obtain a mixture; 5-10 parts of nano-silica and 0.5-1 part of carbon nanotubes are ultrasonically mixed with 20-30 parts of deionized water, and then added to the mixture and mixed uniformly, sealed and placed at room temperature for gelation to obtain an alcohol gel, and the alcohol sol is introduced into n-hexane for solvent replacement for 4-8 hours, and the replacement is repeated 2-4 times to obtain a modified aerogel.

[0010] Aerogel has a rich nanoporous structure that can effectively isolate heat transfer. By adding trimethylchlorosilane, the aerogel surface is silane-modified to improve the compatibility of aerogel with other components and promote the uniform dispersion of aerogel in the slurry. By adding carbon nanotubes, the thermal storage performance of aerogel is further improved.

[0011] Preferably, the preparation method of the modified nano Tai Chi stone is as follows: take Tai Chi stone, clean the surface, dry it and then perform preliminary crushing; then place it in a muffle furnace and program the temperature to 800-900°C, calcine it at a constant temperature for 1-2 hours, and grind it after cooling to obtain Tai Chi stone powder, and then add 20-30 times the weight of Tai Chi stone powder and a magnesium chloride solution with a concentration of 10-15%, stir at a speed of 500-600r / min for 30-50 minutes, filter and wash it with deionized water 3 times to obtain an intermediate, add 30-40 times the weight of deionized water, and then add 0.2-0.5 times the weight of hexadecyltrimethylammonium bromide, heat to 40-50°C and stir at a speed of 500-600r / min for 30-50 minutes, filter and dry at 70-80°C to constant weight to obtain modified nano Tai Chi stone.

[0012] Tai Chi Stone can absorb heat from the human body and store it, preventing energy loss. It also emits far-infrared rays to achieve the effects of heating and warmth. The Tai Chi Stone is first calcined to remove water in different states from its structure, making the internal structure loose and porous, increasing the specific surface area and expanding the heat storage space. By adding magnesium chloride solution to the Tai Chi Stone, the Tai Chi Stone is exfoliated and dispersed into a thinner and finer structure. Hexadecyltrimethylammonium bromide is then added to further modify it, forming a stable adsorption layer to prevent the agglomeration of powder particles. This results in the modified nano Tai Chi Stone being dispersed at the nanoscale, achieving a better heat storage effect.

[0013] Preferably, the dispersant is at least one of sodium lauroylaminoethyl sulfonate, sodium hexametaphosphate, and sodium tripolyphosphate; the cross-linking agent is an acrylate; and the thickener is carboxymethyl cellulose or hydroxyethyl cellulose.

[0014] Preferably, the preparation method of the modified polyethylene glycol is as follows: by weight, 15-20 parts of polyethylene glycol, 2-5 parts of 3-amino-1,2-propylene glycol, and 3-6 parts of diethylamine are dissolved in 150-200 parts of DMF, the temperature is raised to 60-80° C., and the mixture is stirred and reacted for 1-2 hours under the protection of an inert gas. Then, 1-3 parts of graphene oxide are added, ultrasonic vibration is performed for 10-20 minutes, and the filtrate is filtered and freeze-dried to obtain the modified polyethylene glycol.

[0015] First, amino groups are grafted onto the ends of polyethylene glycol to improve the reactivity of polyethylene glycol, and then graphene oxide is added for further modification. Graphene oxide is grafted onto polyethylene glycol to further improve the thermal storage performance and far-infrared performance of polyethylene glycol.

[0016] Preferably, the method for preparing the above-mentioned temperature-locking and heat-storing layered fabric is as follows: prepare a slurry of a far-infrared nylon base fabric layer and a heat-storing print layer (the raw materials are mixed and stirred evenly to obtain a slurry), and print the heat-storing print layer on the far-infrared nylon base fabric layer by flat screen printing, rotary screen printing or gravure printing; electrify the heat-storing print layer area for 5-7 minutes; then blow dry at 60-80°C; and finally bake at 120-150°C for 3-5 minutes to obtain the temperature-locking and heat-storing layered fabric.

[0017] By electrifying the thermal storage print layer area, the nanographite expands. On the one hand, the area is expanded, improving the thermal storage performance and far-infrared performance. On the other hand, the expanded nanographite extends into the far-infrared nylon base fabric layer and other components, forming a stable three-dimensional system and improving the stability of the thermal storage print layer.

[0018] The present invention also provides a down jacket comprising the above-mentioned temperature-locking and heat-storing layered fabric.

[0019] Compared with the prior art, the embodiments of the present application have the following beneficial effects: The temperature-locking and heat-storing layered fabric provided by the present invention reflects heat energy in the body, circulates and locks in heat, and stores heat by arranging a far-infrared nylon base fabric layer and a heat-storing print layer. By adding modified aerogel to the slurry of the heat-storing print layer, it has a rich nanoporous structure and can effectively isolate heat transfer. By adding modified nano Tai Chi stone, it can absorb the body's heat and store heat to avoid energy loss, and at the same time emit far infrared rays to achieve the effects of heating and keeping warm. By adding nano graphite and modified polyethylene glycol, the heat storage and far-infrared effects are further improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a flow chart of a method for manufacturing a temperature-locking and heat-storing layered fabric provided by the present invention.

[0021] Figure 2 This is a flow chart of another method for making a temperature-locking and heat-storing layered fabric provided by the present invention.

[0022] Figure 3 It is a structural schematic diagram of a temperature-locking and heat-storing layered fabric provided by the present invention.

[0023] Notes on the accompanying drawings: 1. Far-infrared nylon base fabric layer; 2. Heat storage printing layer. DETAILED DESCRIPTION

[0024] Unless otherwise defined, all technical and scientific terms used herein have the same meanings as commonly understood by those skilled in the art to which this application belongs. The terms used in the specification of the application are only for the purpose of describing specific embodiments and are not intended to limit this application. The terms "including" and "having" and any variations thereof in the specification and claims of this application and the above-mentioned drawings are intended to cover non-exclusive inclusions. The terms "first", "second", etc. in the specification and claims of this application or the above-mentioned drawings are used to distinguish different objects, not to describe a specific order.

[0025] References herein to "embodiments" mean that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of the present application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0026] Example 1 The embodiment of the present invention provides a layered fabric that locks in heat and stores heat, such as Figure 3As shown, it includes a far-infrared nylon base fabric layer 1 and a heat storage print layer 2 partially provided thereon. The thickness of each layer can be designed according to demand. The heat storage print layer 2 can be provided at the position where the human body is most afraid of cold. The slurry of the heat storage print layer 2 includes the following raw materials in parts by weight: 2 parts of modified aerogel, 3 parts of modified nano Tai Chi stone, 1 part of nano graphite, 4 parts of dispersant, 2 parts of cross-linking agent, 1 part of thickener, 4 parts of modified polyethylene glycol, and 80 parts of water. Figure 1 As shown, a heat storage printing layer 2 is printed on a far-infrared nylon base fabric layer 1 by flat screen printing, rotary screen printing or gravure printing; then it is blown and dried at 60°C; and finally baked at 120°C for 3 minutes to obtain a layered fabric that locks in heat and stores temperature.

[0027] The far-infrared nylon base fabric layer 1 is pretreated before being partially coated with the heat storage print layer 2. The pretreatment method is as follows: the far-infrared nylon base fabric layer 1 is immersed in a 1 mol / L sodium hydroxide solution for 1 hour at a temperature of 30°C, washed after immersion, and dried at 40°C.

[0028] Specifically, the preparation method of the modified aerogel is as follows: 10 parts of tetraethyl orthosilicate, 40 parts of deionized water, 80 parts of ethanol, and 5 parts of trimethylchlorosilane are mixed and stirred uniformly, then a 10% dilute hydrochloric acid solution is added, the pH value of the mixed solution is adjusted to 2, and the mixture is stirred at 300 r / min for 1 hour, and then a 10% dilute ammonia solution is added to adjust the pH value of the mixed solution to 8, and the mixture is stirred uniformly to obtain a mixture; 5 parts of nano-silica and 0.5 parts of carbon nanotubes are ultrasonically mixed with 20 parts of deionized water, and then added to the mixture and mixed uniformly, and then sealed and placed at room temperature for gelation to obtain an alcohol gel, and the alcohol sol is introduced into n-hexane for solvent replacement for 4 hours, and the replacement is repeated twice to obtain a modified aerogel.

[0029] In a specific implementation, the preparation method of the modified nano Tai Chi stone is as follows: take Tai Chi stone, clean the surface, dry it and then perform preliminary crushing; then place it in a muffle furnace and program the temperature to 800°C, calcine it at a constant temperature for 1 hour, cool it and grind it to obtain Tai Chi stone powder, then add 20 times the weight of Tai Chi stone powder and a 10% magnesium chloride solution, stir at a speed of 500r / min for 30 minutes, filter it and wash it with deionized water 3 times to obtain an intermediate, add the intermediate to 30 times the weight of deionized water, and then add 0.2 times the weight of hexadecyltrimethylammonium bromide, heat it to 40°C and stir at a speed of 500r / min for 30 minutes, filter it and dry it at 70°C to constant weight to obtain modified nano Tai Chi stone.

[0030] Specifically, the dispersant is at least one of sodium lauroylaminoethyl sulfonate, sodium hexametaphosphate, and sodium tripolyphosphate; the crosslinking agent is acrylate; and the thickener is carboxymethyl cellulose or hydroxyethyl cellulose.

[0031] Preferably, the preparation method of the modified polyethylene glycol is as follows: 15 parts of polyethylene glycol, 2 parts of 3-amino-1,2-propylene glycol, and 3 parts of diethylamine are dissolved in 150 parts of DMF by weight, the temperature is raised to 60° C., and the mixture is stirred and reacted under inert gas protection for 1 hour, then 1 part of graphene oxide is added, ultrasonically vibrated for 10 minutes, filtered, and the filtrate is freeze-dried to obtain the modified polyethylene glycol.

[0032] Example 2 The embodiment of the present invention provides a layered fabric that locks in heat and stores heat, such as Figure 3 As shown, it includes a far-infrared nylon base fabric layer 1 and a heat storage print layer 2 partially provided thereon. The thickness of each layer can be designed according to demand. The heat storage print layer 2 can be provided at the position where the human body is most afraid of cold. The slurry of the heat storage print layer 2 includes the following raw materials in parts by weight: 2.5 parts of modified aerogel, 4 parts of modified nano Tai Chi stone, 2 parts of nano graphite, 5 parts of dispersant, 3 parts of cross-linking agent, 1.5 parts of thickener, 5 parts of modified polyethylene glycol, and 85 parts of water. Figure 1 As shown, a heat storage printing layer 2 is printed on a far-infrared nylon base fabric layer 1 by flat screen printing, rotary screen printing or gravure printing; then it is blown and dried at 60°C; and finally baked at 120°C for 3 minutes to obtain a layered fabric that locks in heat and stores temperature.

[0033] The far-infrared nylon base fabric layer 1 is pretreated before being partially coated with the heat storage print layer 2. The pretreatment method is as follows: the far-infrared nylon base fabric layer 1 is immersed in a 1 mol / L sodium hydroxide solution for 1 hour at a temperature of 30°C, washed after immersion, and dried at 40°C.

[0034] Specifically, the preparation method of the modified aerogel is as follows: 10 parts of tetraethyl orthosilicate, 40 parts of deionized water, 80 parts of ethanol, and 5 parts of trimethylchlorosilane are mixed and stirred uniformly, then a 10% dilute hydrochloric acid solution is added, the pH value of the mixed solution is adjusted to 2, and the mixture is stirred at 300 r / min for 1 hour, and then a 10% dilute ammonia solution is added to adjust the pH value of the mixed solution to 8, and the mixture is stirred uniformly to obtain a mixture; 5 parts of nano-silica and 0.5 parts of carbon nanotubes are ultrasonically mixed with 20 parts of deionized water, and then added to the mixture and mixed uniformly, and then sealed and placed at room temperature for gelation to obtain an alcohol gel, and the alcohol sol is introduced into n-hexane for solvent replacement for 4 hours, and the replacement is repeated twice to obtain a modified aerogel.

[0035] In a specific implementation, the preparation method of the modified nano Tai Chi stone is as follows: take Tai Chi stone, clean the surface, dry it and then perform preliminary crushing; then place it in a muffle furnace and program the temperature to 800°C, calcine it at a constant temperature for 1 hour, cool it and grind it to obtain Tai Chi stone powder, then add 20 times the weight of Tai Chi stone powder and a 10% magnesium chloride solution, stir at a speed of 500r / min for 30 minutes, filter it and wash it with deionized water 3 times to obtain an intermediate, add the intermediate to 30 times the weight of deionized water, and then add 0.2 times the weight of hexadecyltrimethylammonium bromide, heat it to 40°C and stir at a speed of 500r / min for 30 minutes, filter it and dry it at 70°C to constant weight to obtain modified nano Tai Chi stone.

[0036] Specifically, the dispersant is at least one of sodium lauroylaminoethyl sulfonate, sodium hexametaphosphate, and sodium tripolyphosphate; the crosslinking agent is acrylate; and the thickener is carboxymethyl cellulose or hydroxyethyl cellulose.

[0037] Preferably, the preparation method of the modified polyethylene glycol is as follows: 15 parts of polyethylene glycol, 2 parts of 3-amino-1,2-propylene glycol, and 3 parts of diethylamine are dissolved in 150 parts of DMF by weight, the temperature is raised to 60° C., and the mixture is stirred for reaction for 1 hour under the protection of an inert gas. Then, 1 part of graphene oxide is added, ultrasonically vibrated for 10 minutes, filtered, and the filtrate is freeze-dried to obtain the modified polyethylene glycol.

[0038] Example 3 The embodiment of the present invention provides a layered fabric that locks in heat and stores heat, such as Figure 3 As shown, it includes a far-infrared nylon base fabric layer 1 and a heat storage print layer 2 partially provided thereon. The thickness of each layer can be designed according to demand. The heat storage print layer 2 can be provided at the position where the human body is most afraid of cold. The slurry of the heat storage print layer 2 includes the following raw materials in parts by weight: 3.5 parts of modified aerogel, 5 parts of modified nano Tai Chi stone, 3 parts of nano graphite, 6 parts of dispersant, 4 parts of cross-linking agent, 2 parts of thickener, 7 parts of modified polyethylene glycol, and 90 parts of water. Figure 1 As shown, a heat storage printing layer 2 is printed on a far-infrared nylon base fabric layer 1 by flat screen printing, rotary screen printing or gravure printing; then it is blown and dried at 70°C; and finally baked at 135°C for 4 minutes to obtain a layered fabric that locks in heat and stores temperature.

[0039] Among them, the far-infrared nylon base fabric layer 1 is pretreated before being locally coated with the heat storage print layer 2. The pretreatment method is: the far-infrared nylon base fabric layer 1 is placed in a sodium hydroxide solution with a concentration of 3 mol / L and soaked for 1.5 hours at a temperature of 35°C. After soaking, it is washed and dried at 45°C.

[0040] Specifically, the preparation method of the modified aerogel is as follows: 15 parts of ethyl orthosilicate, 45 parts of deionized water, 90 parts of ethanol, and 7.5 parts of trimethylchlorosilane are mixed and stirred uniformly, then a dilute hydrochloric acid solution with a concentration of 15% is added, the pH value of the mixed solution is adjusted to 3, and the mixture is stirred at 350 r / min for 1.5 hours, and then a dilute ammonia solution with a concentration of 12.5% ​​is added to adjust the pH value of the mixed solution to 8, and the mixture is stirred uniformly to obtain a mixture; 7.5 parts of nano-silica and 0.75 parts of carbon nanotubes are ultrasonically mixed with 25 parts of deionized water, and then added to the mixture and mixed uniformly, and then sealed and placed at room temperature for gelation to obtain an alcohol gel, and the alcohol sol is introduced into n-hexane for solvent replacement for 6 hours, and the replacement is repeated 3 times to obtain a modified aerogel.

[0041] In a specific implementation, the preparation method of the modified nano Tai Chi stone is as follows: take Tai Chi stone, clean the surface, dry it and then perform preliminary crushing; then place it in a muffle furnace and program the temperature to 850°C, calcine it at a constant temperature for 1.5 hours, and grind it after cooling to obtain Tai Chi stone powder. Then, add 25 times the weight of Tai Chi stone powder and a magnesium chloride solution with a concentration of 12.5%, stir at a speed of 550r / min for 40 minutes, filter and wash it with deionized water 3 times to obtain an intermediate, add the intermediate to 35 times the weight of deionized water, and then add 0.35 times the weight of hexadecyltrimethylammonium bromide, heat to 45°C and stir at a speed of 550r / min for 40 minutes, filter and dry at 75°C to constant weight to obtain modified nano Tai Chi stone.

[0042] Specifically, the dispersant is at least one of sodium lauroylaminoethyl sulfonate, sodium hexametaphosphate, and sodium tripolyphosphate; the crosslinking agent is acrylate; and the thickener is carboxymethyl cellulose or hydroxyethyl cellulose.

[0043] Preferably, the preparation method of the modified polyethylene glycol is as follows: 17.5 parts of polyethylene glycol, 3.5 parts of 3-amino-1,2-propylene glycol, and 4.5 parts of diethylamine are dissolved in 175 parts of DMF by weight, the temperature is raised to 70° C., and the reaction is stirred under inert gas protection for 1.5 hours. Then, 2 parts of graphene oxide are added, ultrasonically vibrated for 15 minutes, and the filtrate is filtered and freeze-dried to obtain the modified polyethylene glycol.

[0044] Example 4 The embodiment of the present invention provides a layered fabric that locks in heat and stores heat, such as Figure 3As shown, it includes a far-infrared nylon base fabric layer 1 and a heat storage print layer 2 partially provided thereon. The thickness of each layer can be designed according to demand. The heat storage print layer 2 can be provided at the position where the human body is most afraid of cold. The slurry of the heat storage print layer 2 includes the following raw materials in parts by weight: 4.5 parts of modified aerogel, 6 parts of modified nano Tai Chi stone, 4 parts of nano graphite, 7 parts of dispersant, 5 parts of cross-linking agent, 2.5 parts of thickener, 9 parts of modified polyethylene glycol, and 95 parts of water. Figure 1 As shown, a heat storage printing layer 2 is printed on a far-infrared nylon base fabric layer 1 by flat screen printing, rotary screen printing or gravure printing; then it is blown dry at 80°C; and finally baked at 150°C for 5 minutes to obtain a layered fabric that locks in heat and stores temperature.

[0045] Among them, the far-infrared nylon base fabric layer 1 is pretreated before being locally coated with the heat storage print layer 2. The pretreatment method is: the far-infrared nylon base fabric layer 1 is placed in a sodium hydroxide solution with a concentration of 5 mol / L and soaked for 2 hours at a temperature of 40°C. After soaking, it is washed and dried at 50°C.

[0046] Specifically, the preparation method of the modified aerogel is as follows: 20 parts of ethyl orthosilicate, 50 parts of deionized water, 100 parts of ethanol, and 10 parts of trimethylchlorosilane are mixed and stirred uniformly, then a 20% dilute hydrochloric acid solution is added, the pH value of the mixed solution is adjusted to 4, and the reaction is stirred at 400r / min for 2h, and then a 15% dilute ammonia solution is added to adjust the pH value of the mixed solution to 9, and the mixture is stirred uniformly to obtain a mixture; 10 parts of nano-silica and 0.1 parts of carbon nanotubes are ultrasonically mixed with 30 parts of deionized water, and then added to the mixture and mixed uniformly, and then sealed and placed at room temperature for gelation to obtain an alcohol gel, and the alcohol sol is introduced into n-hexane for solvent replacement for 8 hours, and the replacement is repeated 4 times to obtain a modified aerogel.

[0047] In a specific implementation, the preparation method of the modified nano Tai Chi stone is as follows: take Tai Chi stone, clean the surface, dry it and then perform preliminary crushing; then place it in a muffle furnace and program the temperature to 900°C, calcine it at a constant temperature for 2 hours, cool it and grind it to obtain Tai Chi stone powder, then add 30 times the weight of Tai Chi stone powder and a 15% magnesium chloride solution, stir at a speed of 600r / min for 50 minutes, filter it and wash it with deionized water 3 times to obtain an intermediate, add the intermediate to 40 times the weight of deionized water, and then add 0.5 times the weight of hexadecyltrimethylammonium bromide, heat it to 50°C and stir it at a speed of 600r / min for 50 minutes, filter it and dry it at 80°C to constant weight to obtain modified nano Tai Chi stone.

[0048] Specifically, the dispersant is at least one of sodium lauroylaminoethyl sulfonate, sodium hexametaphosphate, and sodium tripolyphosphate; the crosslinking agent is acrylate; and the thickener is carboxymethyl cellulose or hydroxyethyl cellulose.

[0049] Preferably, the preparation method of the modified polyethylene glycol is as follows: 20 parts of polyethylene glycol, 5 parts of 3-amino-1,2-propylene glycol, and 6 parts of diethylamine are dissolved in 200 parts of DMF by weight, the temperature is raised to 80° C., and the mixture is stirred and reacted for 2 hours under the protection of an inert gas. Then, 3 parts of graphene oxide are added, ultrasonically vibrated for 20 minutes, filtered, and the filtrate is freeze-dried to obtain the modified polyethylene glycol.

[0050] Example 5 The embodiment of the present invention provides a layered fabric that locks in heat and stores heat, such as Figure 3 As shown, it includes a far-infrared nylon base fabric layer 1 and a heat storage print layer 2 partially provided thereon. The thickness of each layer can be designed according to demand. The heat storage print layer 2 can be provided at the position where the human body is most afraid of cold. The slurry of the heat storage print layer 2 includes the following raw materials in parts by weight: 5 parts of modified aerogel, 7 parts of modified nano Tai Chi stone, 5 parts of nano graphite, 8 parts of dispersant, 6 parts of cross-linking agent, 3 parts of thickener, 10 parts of modified polyethylene glycol, and 100 parts of water. Figure 1 As shown, a heat storage printing layer 2 is printed on a far-infrared nylon base fabric layer 1 by flat screen printing, rotary screen printing or gravure printing; then it is blown dry at 80°C; and finally baked at 150°C for 5 minutes to obtain a layered fabric that locks in heat and stores temperature.

[0051] Among them, the far-infrared nylon base fabric layer 1 is pretreated before being locally coated with the heat storage print layer 2. The pretreatment method is: the far-infrared nylon base fabric layer 1 is placed in a sodium hydroxide solution with a concentration of 5 mol / L and soaked for 2 hours at a temperature of 40°C. After soaking, it is washed and dried at 50°C.

[0052] Specifically, the preparation method of the modified aerogel is as follows: 20 parts of ethyl orthosilicate, 50 parts of deionized water, 100 parts of ethanol, and 10 parts of trimethylchlorosilane are mixed and stirred uniformly, then a 20% dilute hydrochloric acid solution is added, the pH value of the mixed solution is adjusted to 4, and the reaction is stirred at 400r / min for 2h, and then a 15% dilute ammonia solution is added to adjust the pH value of the mixed solution to 9, and the mixture is stirred uniformly to obtain a mixture; 10 parts of nano-silica and 0.1 parts of carbon nanotubes are ultrasonically mixed with 30 parts of deionized water, and then added to the mixture and mixed uniformly, and then sealed and placed at room temperature for gelation to obtain an alcohol gel, and the alcohol sol is introduced into n-hexane for solvent replacement for 8 hours, and the replacement is repeated 4 times to obtain a modified aerogel.

[0053] In a specific implementation, the preparation method of the modified nano Tai Chi stone is as follows: take Tai Chi stone, clean the surface, dry it and then perform preliminary crushing; then place it in a muffle furnace and program the temperature to 900°C, calcine it at a constant temperature for 2 hours, cool it and grind it to obtain Tai Chi stone powder, then add 30 times the weight of Tai Chi stone powder and a 15% magnesium chloride solution, stir at a speed of 600r / min for 50 minutes, filter it and wash it with deionized water 3 times to obtain an intermediate, add the intermediate to 40 times the weight of deionized water, and then add 0.5 times the weight of hexadecyltrimethylammonium bromide, heat it to 50°C and stir it at a speed of 600r / min for 50 minutes, filter it and dry it at 80°C to constant weight to obtain modified nano Tai Chi stone.

[0054] Specifically, the dispersant is at least one of sodium lauroylaminoethyl sulfonate, sodium hexametaphosphate, and sodium tripolyphosphate; the crosslinking agent is acrylate; and the thickener is carboxymethyl cellulose or hydroxyethyl cellulose.

[0055] Preferably, the preparation method of the modified polyethylene glycol is as follows: 20 parts of polyethylene glycol, 5 parts of 3-amino-1,2-propylene glycol, and 6 parts of diethylamine are dissolved in 200 parts of DMF by weight, the temperature is raised to 80° C., and the mixture is stirred and reacted for 2 hours under the protection of an inert gas. Then, 3 parts of graphene oxide are added, ultrasonically vibrated for 20 minutes, filtered, and the filtrate is freeze-dried to obtain the modified polyethylene glycol.

[0056] Example 6 (the difference from Example 3 is that the heat storage print layer 2 area is energized and then air-dried) The embodiment of the present invention provides a layered fabric that locks in heat and stores heat, such as Figure 3 As shown, it includes a far-infrared nylon base fabric layer 1 and a heat storage print layer 2 partially provided thereon. The thickness of each layer can be designed according to demand. The heat storage print layer 2 can be provided at the position where the human body is most afraid of cold. The slurry of the heat storage print layer 2 includes the following raw materials in parts by weight: 3.5 parts of modified aerogel, 5 parts of modified nano Tai Chi stone, 3 parts of nano graphite, 6 parts of dispersant, 4 parts of cross-linking agent, 2 parts of thickener, 7 parts of modified polyethylene glycol, and 90 parts of water. Figure 2 As shown, a heat storage print layer 2 is printed on a far-infrared nylon base fabric layer 1 by flat screen printing, rotary screen printing or gravure printing; the heat storage print layer 2 area is electrified for 6 minutes; then it is dried with air at 70°C; and finally baked at 135°C for 4 minutes to obtain a layered fabric that locks in heat and stores temperature.

[0057] Among them, the far-infrared nylon base fabric layer 1 is pretreated before being locally coated with the heat storage print layer 2. The pretreatment method is: the far-infrared nylon base fabric layer 1 is placed in a sodium hydroxide solution with a concentration of 3 mol / L and soaked for 1.5 hours at a temperature of 35°C. After soaking, it is washed and dried at 45°C.

[0058] Specifically, the preparation method of the modified aerogel is as follows: 15 parts of ethyl orthosilicate, 45 parts of deionized water, 90 parts of ethanol, and 7.5 parts of trimethylchlorosilane are mixed and stirred uniformly, then a dilute hydrochloric acid solution with a concentration of 15% is added, the pH value of the mixed solution is adjusted to 3, and the mixture is stirred at 350 r / min for 1.5 hours, and then a dilute ammonia solution with a concentration of 12.5% ​​is added to adjust the pH value of the mixed solution to 8, and the mixture is stirred uniformly to obtain a mixture; 7.5 parts of nano-silica and 0.75 parts of carbon nanotubes are ultrasonically mixed with 25 parts of deionized water, and then added to the mixture and mixed uniformly, and then sealed and placed at room temperature for gelation to obtain an alcohol gel, and the alcohol sol is introduced into n-hexane for solvent replacement for 6 hours, and the replacement is repeated 3 times to obtain a modified aerogel.

[0059] In a specific implementation, the preparation method of the modified nano Tai Chi stone is as follows: take Tai Chi stone, clean the surface, dry it and then perform preliminary crushing; then place it in a muffle furnace and program the temperature to 850°C, calcine it at a constant temperature for 1.5 hours, and grind it after cooling to obtain Tai Chi stone powder. Then, add 25 times the weight of Tai Chi stone powder and a magnesium chloride solution with a concentration of 12.5%, stir at a speed of 550r / min for 40 minutes, filter and wash it with deionized water 3 times to obtain an intermediate, add the intermediate to 35 times the weight of deionized water, and then add 0.35 times the weight of hexadecyltrimethylammonium bromide, heat to 45°C and stir at a speed of 550r / min for 40 minutes, filter and dry at 75°C to constant weight to obtain modified nano Tai Chi stone.

[0060] Specifically, the dispersant is at least one of sodium lauroylaminoethyl sulfonate, sodium hexametaphosphate, and sodium tripolyphosphate; the crosslinking agent is acrylate; and the thickener is carboxymethyl cellulose or hydroxyethyl cellulose.

[0061] Preferably, the preparation method of the modified polyethylene glycol is as follows: 17.5 parts of polyethylene glycol, 3.5 parts of 3-amino-1,2-propylene glycol, and 4.5 parts of diethylamine are dissolved in 175 parts of DMF by weight, the temperature is raised to 70° C., and the reaction is stirred under inert gas protection for 1.5 hours. Then, 2 parts of graphene oxide are added, ultrasonically vibrated for 15 minutes, and the filtrate is filtered and freeze-dried to obtain the modified polyethylene glycol.

[0062] Comparative Example 1 The difference from Example 3 is that the modified aerogel in the slurry of the heat storage print layer 2 is replaced by ordinary aerogel.

[0063] Comparative Example 2 The difference from Example 3 is that the modified nano Tai Chi stone in the slurry of the heat storage print layer 2 is replaced by ordinary nano Tai Chi stone.

[0064] Comparative Example 3 The difference from Example 3 is that the modified polyethylene glycol in the slurry of the heat storage print layer 2 is replaced by ordinary polyethylene glycol.

[0065] Comparative Example 4 The difference from Example 3 is that the nanographite in the slurry of the heat storage print layer 2 is replaced by an equal amount of water.

[0066] Comparative Example 5 The difference from Example 3 is that the modified aerogel in the slurry of the heat storage print layer 2 is replaced by ordinary aerogel, the modified nano Tai Chi stone is replaced by ordinary nano Tai Chi stone, the modified polyethylene glycol is replaced by ordinary polyethylene glycol, and the nano graphite is replaced by an equal amount of water.

[0067] Comparative Example 6 The difference from Example 3 is that the far-infrared nylon base fabric layer 1 is not pretreated.

[0068] Performance Testing The fabrics of Examples 1-5 and Comparative Examples 1-7 were tested for their far infrared performance using the test method GB / T30127-2013 (without washing). The test results are shown in Table 1 below: Table 1 Fabric far infrared performance test table

[0069] From the above results, it can be seen that the fabric prepared in this application has excellent far-infrared performance. By adding modified aerogel, modified nano Tai Chi stone, modified polyethylene glycol and nano graphite, it has a synergistic effect and can greatly improve the far-infrared performance of the fabric.

[0070] It should be noted that, for the sake of simplicity, the aforementioned embodiments are described as a series of action combinations. However, those skilled in the art should be aware that the present invention is not limited by the order of the actions described, because according to the present invention, certain steps may be performed in other orders or simultaneously. Secondly, those skilled in the art should also be aware that the embodiments described in this specification are all preferred embodiments, and the actions and modules involved are not necessarily required by the present invention.

[0071] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the scope of protection of the invention. Obviously, the embodiments described are only some embodiments of the present invention, rather than all embodiments. Based on these embodiments, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention. Although the present invention has been described in detail with reference to the above embodiments, ordinary technicians in this field can still combine, add, delete or make other adjustments to the features in the various embodiments of the present invention according to the circumstances without conflict, without making creative work, so as to obtain different other technical solutions that do not deviate from the concept of the present invention in essence, and these technical solutions also fall within the scope of protection of the present invention.

Claims

1. A layered fabric for locking in heat and storing heat, characterized in that: It includes a far-infrared nylon base fabric layer and a heat storage print layer partially provided thereon. The slurry of the heat storage print layer includes the following raw materials in parts by weight: 2-5 parts of modified aerogel, 3-7 parts of modified nano Tai Chi stone, 1-5 parts of nano graphite, 4-8 parts of dispersant, 2-6 parts of cross-linking agent, 1-3 parts of thickener, 4-10 parts of modified polyethylene glycol, and 80-100 parts of water.

2. The heat-locking and heat-storing layered fabric according to claim 1, characterized in that: The slurry of the heat storage printing layer includes the following raw materials in parts by weight: 2.5-4.5 parts of modified aerogel, 4-6 parts of modified nano Tai Chi stone, 2-4 parts of nano graphite, 5-7 parts of dispersant, 3-5 parts of cross-linking agent, 1.5-2.5 parts of thickener, 5-9 parts of modified polyethylene glycol, and 85-95 parts of water.

3. The heat-locking and heat-storing layered fabric according to claim 2, characterized in that: The slurry of the heat storage printing layer includes the following raw materials in parts by weight: 3.5 parts of modified aerogel, 5 parts of modified nano Tai Chi stone, 3 parts of nano graphite, 6 parts of dispersant, 4 parts of cross-linking agent, 2 parts of thickener, 7 parts of modified polyethylene glycol, and 90 parts of water.

4. The heat-locking and heat-storing layered fabric according to claim 1, characterized in that: The far-infrared nylon base fabric layer is pretreated before being partially coated with the heat storage print layer. The pretreatment method is: soaking the far-infrared nylon base fabric layer in a sodium hydroxide solution with a concentration of 1-5 mol / L for 1-2 hours at a temperature of 30-40°C, washing it after soaking, and drying it at 40-50°C.

5. The heat-locking and heat-storing layered fabric according to claim 1, characterized in that: The modified aerogel preparation method is as follows: 10-20 parts by weight of tetraethyl orthosilicate, 40-50 parts of deionized water, 80-100 parts of ethanol, and 5-10 parts of trimethylchlorosilane are mixed and stirred uniformly; then a dilute hydrochloric acid solution with a concentration of 10-20% is added, the pH value of the mixed solution is adjusted to 2-4, and the mixture is stirred at 300-400 r / min for 1-2 hours; then a dilute ammonia solution with a concentration of 10-15% is added to adjust the pH value of the mixed solution to 8-9, and the mixture is stirred uniformly to obtain a mixture; 5-10 parts of nano-silica and 0.5-1 part of carbon nanotubes are ultrasonically mixed with 20-30 parts of deionized water, and then added to the mixture and mixed uniformly; the mixture is sealed and placed at room temperature for gelation to obtain an alcohol gel; the alcohol sol is introduced into n-hexane for solvent replacement for 4-8 hours, and the replacement is repeated 2-4 times to obtain the modified aerogel.

6. The heat-locking and heat-storing layered fabric according to claim 1, characterized in that: The preparation method of the modified nano Tai Chi stone is as follows: take Tai Chi stone, clean the surface, dry it and then perform preliminary crushing; then place it in a muffle furnace and program the temperature to 800-900°C, constant temperature roasting for 1-2 hours, and grind it after cooling to obtain Tai Chi stone powder, then add 20-30 times the weight of Tai Chi stone powder and a magnesium chloride solution with a concentration of 10-15%, stir at a speed of 500-600 r / min for 30-50 minutes, filter and wash it with deionized water three times to obtain an intermediate, add 30-40 times the weight of deionized water, and then add 0.2-0.5 times the weight of hexadecyltrimethylammonium bromide, heat it to 40-50°C and stir at a speed of 500-600 r / min for 30-50 minutes, filter and dry it at 70-80°C to constant weight to obtain modified nano Tai Chi stone.

7. The heat-locking and heat-storing layered fabric according to claim 1, characterized in that: The dispersant is at least one of sodium lauroylaminoethyl sulfonate, sodium hexametaphosphate, and sodium tripolyphosphate; the crosslinking agent is acrylate; and the thickener is carboxymethyl cellulose or hydroxyethyl cellulose.

8. The heat-locking and heat-storing layered fabric according to claim 1, characterized in that: The preparation method of the modified polyethylene glycol is as follows: 15-20 parts of polyethylene glycol, 2-5 parts of 3-amino-1,2-propylene glycol, and 3-6 parts of diethylamine are dissolved in 150-200 parts of DMF by weight, the temperature is raised to 60-80° C., and the mixture is stirred and reacted for 1-2 hours under the protection of an inert gas. Then, 1-3 parts of graphene oxide is added, ultrasonic vibration is applied for 10-20 minutes, and the filtrate is filtered and freeze-dried to obtain the modified polyethylene glycol.

9. The heat-locking and heat-storing layered fabric according to claim 1, characterized in that: The heat storage print layer is printed on the far-infrared nylon base fabric layer by flat screen printing, rotary screen printing or gravure printing. The heat storage print layer area is electrified for 5-7 minutes, then dried by blast drying at 60-90°C, and finally baked at 150-180°C for 3-5 minutes to obtain a temperature-locking and heat-storing layered fabric.

10. A down jacket, characterized in that: The invention comprises the temperature-locking and heat-storing layered fabric as described in any one of claims 1 to 9.

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