Heat-storage warm-keeping fabric and preparation method thereof

Abstract

The invention discloses a heat-storage and warm-keeping fabric and a preparation method thereof.The heat-storage and warm-keeping fabric comprises a single-layer or double-layer fabric layer and double-layer coating layers; wherein the fabric layer is a warp knitting fabric or a weft knitting fabric or a tatting fabric; the inner layer of the coating layer is composed of a coating material containing graphene, and the content of the graphene is 10%-50% of the content of the coating material; the outer layer of the coating layer is water-based acrylic emulsion or polyurethane emulsion, the emulsion contains aluminum oxide, and the content of the aluminum oxide is 5%-25% of the content of the emulsion. The preparation method comprises the following steps of fabric weaving, waterproof treatment, calendaring and coating. The fabric contains graphene and is prepared through an after-finishing process, the waterproofness of the fabric is 3 levels or above, the fabric has excellent heat storage and warm keeping functions, and the specific energy of the fabric can be increased by 5 DEG C or above compared with a common coating fabric.

Description

Technical Field

[0001] The invention belongs to the field of textile fabrics, and in particular relates to a heat-storage and warm-keeping fabric and a preparation method thereof. Background Art

[0002] With the prevalence of AI, high-tech fabrics are becoming more and more popular in the market. In autumn and winter, many consumers want to wear clothes that are not bulky but can keep warm, especially high-tech fabrics.

[0003] There are many heat-storage and warmth-keeping fabrics on the market, but most of them rely on special fibers. The existing technology uses various functional fibers to increase the heat-storage and warmth-keeping properties of fabrics, such as graphene, far-infrared fibers, carbon nanotube fibers, etc., to achieve the heat-storage and warmth-keeping properties of fabrics. Although far-infrared fibers are competitive in weaving properties and prices, the heat-storage effect of the fabric is not good; while graphene and carbon nanotube fibers have a certain heat-storage and warmth-keeping effect after the fiber ratio reaches a certain level, but there is no advantage in cost and weaving properties. Therefore, under the premise of not being restricted by raw materials, it is urgent to produce a piece of heat-storage and warmth-keeping fabric through post-finishing technology. Summary of the invention

[0004] Purpose of the invention: In order to solve the deficiencies of the prior art, the present invention provides a heat-storage and warm-keeping fabric and a preparation method thereof.

[0005] Technical solution: A heat storage and thermal insulation fabric, the heat storage and thermal insulation fabric comprises a fabric layer and a coating layer, the fabric layer is a single layer or a double layer, and the coating layer is a double layer; wherein:

[0006] The fabric layer is warp knitted, weft knitted or woven fabric;

[0007] The inner layer of the coating layer is composed of a coating material containing graphene, the graphene content is 10%-50% of the coating content, and the thickening is 30000-60000 CPS;

[0008] The outer layer of the coating layer is water-based acrylic emulsion or polyurethane emulsion, the emulsion contains aluminum oxide, and the content of aluminum oxide is 5%-25% of the emulsion content.

[0009] As a further optimization, the graphene-containing coating material is an aqueous acrylate solution or an aqueous polyurethane latex solution.

[0010] As a further optimization, the aqueous acrylate solution comprises 100 parts of aqueous acrylate and 25-35 parts of graphene in weight.

[0011] As a further optimization, the aqueous polyurethane latex solution comprises 100 parts of aqueous polyurethane and 25-35 parts of graphene by weight.

[0012] As a further optimization, the graphene content is 30% of the coating material content.

[0013] As a further optimization, the content of aluminum oxide is 15%.

[0014] As a further optimization, the warp knitting or weft knitting of the fabric layer is a high-needle fabric of 36G or above.

[0015] As a further optimization, the warp density of the woven fabric of the fabric layer is 150-280 strands / inc, and the weft density is 150-280 strands / inc.

[0016] A method for preparing a heat-storage and warm-keeping fabric comprises the following steps: fabric weaving - waterproof treatment - calendering - coating; wherein:

[0017] The waterproof treatment is as follows: the waterproof temperature is 140-180°C, the baking time is 45-60 seconds; the waterproof prescription is as follows: acrylic ester non-fluorine waterproofing agent: 40-80g / L, isocyanate cross-linking agent: 10-20g / L, penetrant: 10g / L, citric acid: 8g / L;

[0018] Calendering: The calendering temperature is 120-160℃, the speed is 20-40m / min, and the pressure is 55kgf.

[0019] As a further optimization, the waterproofness of the prepared fabric is above level 3 and the thermal insulation rate is above 35%.

[0020] Beneficial effects: The fabric of the present invention contains graphene and is made through a post-finishing process. The waterproof degree of the fabric is above level 3, and it has excellent heat storage and warmth-keeping functions. It can increase the temperature by more than 5°C compared with ordinary coated fabrics. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present invention will be described clearly and completely below so that those skilled in the art can better understand the advantages and features of the present invention, thereby making a clearer definition of the protection scope of the present invention. The embodiments described in the present invention are only a part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present invention. Specific embodiment 1

[0023] A heat storage and thermal insulation fabric, comprising a fabric layer and a coating layer, wherein the fabric layer is a single layer or a double layer, and the coating layer is a double layer.

[0024] The fabric layer is a warp knitted fabric, and the warp knitted fabric of the fabric layer is a high-needle fabric above 36G.

[0025] The inner layer of the coating layer is composed of a coating material containing graphene, the graphene content is 10% of the coating content, and the thickening is 30000CPS. The coating material containing graphene is an aqueous acrylate solution. The aqueous acrylate solution is 100 parts of aqueous acrylate and 25 parts of graphene by weight.

[0026] The outer layer of the coating layer is a water-based acrylic emulsion, which contains aluminum oxide, and the content of the aluminum oxide is 5% of the emulsion content.

[0027] The preparation method of the heat storage and warm-keeping fabric of this embodiment comprises the following steps: fabric weaving - waterproof treatment - calendering - coating; wherein:

[0028] The waterproof treatment is as follows: the waterproof temperature is 140°C, the baking time is 45 seconds; the waterproof prescription is as follows: acrylate non-fluorine waterproofing agent: 40g / L, isocyanate cross-linking agent: 10g / L, penetrant: 10g / L, citric acid: 8g / L;

[0029] Calendering: The calendering temperature is 120°C, the speed is 20m / min, and the pressure is 55kgf. Specific embodiment 2

[0031] A heat storage and thermal insulation fabric, comprising a fabric layer and a coating layer, wherein the fabric layer is a single layer or a double layer, and the coating layer is a double layer.

[0032] The fabric layer is a weft-knitted fabric, and the weft-knitted fabric of the fabric layer is a high-needle fabric of 36G or above.

[0033] The inner layer of the coating layer is composed of a coating material containing graphene, the graphene content is 50% of the coating content, and the thickening is 60000CPS. The coating material containing graphene is an aqueous acrylate solution. The aqueous acrylate solution is 100 parts of aqueous acrylate and 35 parts of graphene by weight.

[0034] The outer layer of the coating layer is a polyurethane emulsion, which contains aluminum oxide, and the content of aluminum oxide is 25% of the emulsion content.

[0035] The preparation method of the heat storage and warm-keeping fabric of this embodiment comprises the following steps: fabric weaving - waterproof treatment - calendering - coating; wherein:

[0036] The waterproof treatment is as follows: the waterproof temperature is 180°C, the baking time is 60 seconds; the waterproof prescription is as follows: acrylate non-fluorine waterproofing agent: 80g / L, isocyanate cross-linking agent: 20g / L, penetrant: 10g / L, citric acid: 8g / L;

[0037] Calendering: The calendering temperature is 160°C, the speed is 40m / min, and the pressure is 55kgf. Specific embodiment 3

[0039] A heat storage and thermal insulation fabric, comprising a fabric layer and a coating layer, wherein the fabric layer is a single layer or a double layer, and the coating layer is a double layer.

[0040] The fabric layer is a woven fabric, and the warp density of the woven fabric of the fabric layer is 190 strands / inc and the weft density is 170 strands / inc.

[0041] The inner layer of the coating layer is composed of a coating material containing graphene, the graphene content is 20% of the coating content, and the thickening is 40000CPS. The coating material containing graphene is an aqueous acrylate solution. The aqueous acrylate solution is 100 parts of aqueous acrylate and 27 parts of graphene by weight.

[0042] The outer layer of the coating layer is a water-based acrylic emulsion, which contains aluminum oxide, and the content of aluminum oxide is 12% of the emulsion content.

[0043] The preparation method of the heat storage and warm-keeping fabric of this embodiment comprises the following steps: fabric weaving - waterproof treatment - calendering - coating; wherein:

[0044] The waterproof treatment is as follows: the waterproof temperature is 160°C, the baking time is 49 seconds; the waterproof prescription is as follows: acrylate non-fluorine waterproofing agent: 47g / L, isocyanate cross-linking agent: 13g / L, penetrant: 10g / L, citric acid: 8g / L;

[0045] Calendering: The calendering temperature is 132°C, the speed is 23m / min, and the pressure is 55kgf. Specific embodiment 4

[0047] A heat storage and thermal insulation fabric, comprising a fabric layer and a coating layer, wherein the fabric layer is a single layer or a double layer, and the coating layer is a double layer.

[0048] The fabric layer is a woven fabric, and the warp density of the woven fabric of the fabric layer is 210 strands / inc and the weft density is 220 strands / inc.

[0049] The inner layer of the coating layer is composed of a coating material containing graphene, the graphene content is 30% of the coating content, and the thickening is 50000CPS. The coating material containing graphene is an aqueous polyurethane latex solution. The aqueous polyurethane latex solution is 100 parts of aqueous polyurethane and 30 parts of graphene by weight.

[0050] The outer layer of the coating layer is a polyurethane emulsion, which contains aluminum oxide, and the content of aluminum oxide is 15% of the emulsion content.

[0051] The preparation method of the heat storage and warm-keeping fabric of this embodiment comprises the following steps: fabric weaving - waterproof treatment - calendering - coating; wherein:

[0052] The waterproof treatment is as follows: the waterproof temperature is 172°C, the baking time is 52 seconds; the waterproof prescription is as follows: acrylate non-fluorine waterproofing agent: 56g / L, isocyanate cross-linking agent: 15g / L, penetrant: 10g / L, citric acid: 8g / L;

[0053] Calendering: The calendering temperature is 144°C, the speed is 34m / min, and the pressure is 55kgf. Specific embodiment 5

[0055] A heat storage and thermal insulation fabric, comprising a fabric layer and a coating layer, wherein the fabric layer is a single layer or a double layer, and the coating layer is a double layer.

[0056] The fabric layer is a woven fabric, and the warp density of the woven fabric in the fabric layer is 245 strands / inc and the weft density is 255 strands / inc.

[0057] The inner layer of the coating layer is composed of a coating material containing graphene, the graphene content is 42% of the coating content, and the thickening is 45000CPS. The coating material containing graphene is an aqueous polyurethane latex solution. The aqueous polyurethane latex solution is 100 parts of aqueous polyurethane and 29 parts of graphene by weight.

[0058] The outer layer of the coating layer is a water-based acrylic emulsion, which contains aluminum oxide, and the content of aluminum oxide is 21% of the emulsion content.

[0059] The preparation method of the heat storage and warm-keeping fabric of this embodiment comprises the following steps: fabric weaving - waterproof treatment - calendering - coating; wherein:

[0060] The waterproof treatment is as follows: the waterproof temperature is 168°C, the baking time is 56 seconds; the waterproof prescription is as follows: acrylate non-fluorine waterproofing agent: 67g / L, isocyanate cross-linking agent: 17g / L, penetrant: 10g / L, citric acid: 8g / L;

[0061] Calendering: The calendering temperature is 152°C, the speed is 28m / min, and the pressure is 55kgf. Specific embodiment 6

[0063] A heat storage and thermal insulation fabric, comprising a fabric layer and a coating layer, wherein the fabric layer is a single layer or a double layer, and the coating layer is a double layer.

[0064] The fabric layer is a woven fabric, and the warp density of the woven fabric of the fabric layer is 267 strands / inc and the weft density is 273 strands / inc.

[0065] The inner layer of the coating layer is composed of a coating material containing graphene, the graphene content is 38% of the coating content, and the thickening is 52000CPS. The coating material containing graphene is an aqueous polyurethane latex solution. The aqueous polyurethane latex solution is 100 parts of aqueous polyurethane and 33 parts of graphene by weight.

[0066] The outer layer of the coating layer is a polyurethane emulsion, which contains aluminum oxide, and the content of aluminum oxide is 23% of the emulsion content.

[0067] The preparation method of the heat storage and warm-keeping fabric of this embodiment comprises the following steps: fabric weaving - waterproof treatment - calendering - coating; wherein:

[0068] The waterproof treatment is as follows: the waterproof temperature is 154°C, the baking time is 47 seconds; the waterproof prescription is as follows: acrylate non-fluorine waterproofing agent: 73g / L, isocyanate cross-linking agent: 19g / L, penetrant: 10g / L, citric acid: 8g / L;

[0069] Calendering: The calendering temperature is 149°C, the speed is 36m / min, and the pressure is 55kgf.

[0070] Table 1 Fabric performance test table

[0071] Fabric GB / T 4745 Waterproof GB / T35762-2017 Insulation rate Ordinary air layer fabric Level 3-4 18％ Ordinary coating products Level 2.5 22％ Thermal insulation fabric Level 3 35％

[0072] As shown in Table 1, the waterproofness of the fabric prepared by the present invention is above level 3, and it has excellent heat storage and warmth-keeping function, and can increase the temperature by more than 5° C. compared with ordinary coated fabrics.

Claims

1. A heat storage and warmth-keeping fabric, characterized in that: The heat storage and warmth-keeping fabric comprises a fabric layer and a coating layer, wherein the fabric layer is a single layer or a double layer, and the coating layer is a double layer; wherein: The fabric layer is warp knitted, weft knitted or woven fabric; The inner layer of the coating layer is composed of a coating material containing graphene, the graphene content is 10%-50% of the coating content, and the thickening is 30000-60000 CPS; The outer layer of the coating layer is water-based acrylic emulsion or polyurethane emulsion, the emulsion contains aluminum oxide, and the content of aluminum oxide is 5%-25% of the emulsion content.

2. The heat storage and warmth retaining fabric according to claim 1, characterized in that: The coating material containing graphene is an aqueous acrylate solution or an aqueous polyurethane latex solution.

3. The heat storage and warmth retaining fabric according to claim 2, characterized in that: The aqueous acrylate solution comprises 100 parts of aqueous acrylate and 25-35 parts of graphene in terms of weight.

4. The heat storage and warmth retaining fabric according to claim 2, characterized in that: The aqueous polyurethane latex solution comprises 100 parts of aqueous polyurethane and 25-35 parts of graphene in parts by weight.

5. The heat storage and warmth retaining fabric according to claim 1, characterized in that: The graphene content is 30% of the coating material content.

6. The heat storage and warmth retaining fabric according to claim 1, characterized in that: The content of aluminum oxide is 15%.

7. The heat storage and warmth retaining fabric according to claim 1, characterized in that: The warp knitting or weft knitting of the fabric layer is a high-needle fabric of 36G or above.

8. The heat storage and warmth retaining fabric according to claim 1, characterized in that: The warp density of the woven fabric of the fabric layer is 150-280 strands / inc, and the weft density is 150-280 strands / inc.

9. A method for preparing the heat storage and warm keeping fabric according to claim 1, characterized in that: The process includes the following steps: fabric weaving - waterproofing - calendering - coating; wherein: The waterproof treatment is as follows: the waterproof temperature is 140-180°C, the baking time is 45-60 seconds; the waterproof prescription is as follows: acrylic ester non-fluorine waterproofing agent: 40-80g / L, isocyanate cross-linking agent: 10-20g / L, penetrant: 10g / L, citric acid: 8g / L; Calendering: The calendering temperature is 120-160℃, the speed is 20-40m / min, and the pressure is 55kgf.

10. The method for preparing the heat storage and warming fabric according to claim 9, characterized in that: The waterproof degree of the prepared fabric is above level 3, and the thermal insulation rate is above 35%.