High-performance light-absorption heat-storage warm-keeping fabric and preparation method thereof

Abstract

The invention relates to the technical field of functional fabrics, in particular to a high-performance light-absorption heat-storage warm-keeping fabric and a preparation method thereof.The high-performance light-absorption heat-storage warm-keeping fabric comprises a base cloth fabric and light-absorption heat-storage slurry coating the surface of the base cloth fabric, and the light-absorption heat-storage slurry is prepared from, by weight, 40-70 parts of a light-absorption heat-storage material, 20-50 parts of waterborne polyurethane, 0.1-0.5 part of a thickening agent and 0.5-2 parts of a dispersing agent; the light absorption and heat storage material is a graphene oxide aqueous phase dispersion liquid, the base cloth fabric is a graphene polyester fabric, and through optimization of the components of the material, the fabric has good light absorption, heat storage and warm keeping effects.

Description

Technical Field

[0001] The invention relates to the field of thermal insulation fabrics, and in particular to a high-performance light-absorbing heat-storing thermal insulation fabric and a preparation method thereof. Background Art

[0002] With the development of science and technology and the improvement of living standards, people have more and more functional demands on clothing fabrics, among which winter warmth performance is the focus of people's attention. Traditional warm clothing generally achieves warmth by increasing the thickness of the fabric or the content of the hollow layer, but it makes the clothing look fluffy and bloated when worn, resulting in restricted movement and reduced aesthetics. Therefore, textiles with light texture and good warmth retention have become the mainstream demand of consumers in autumn and winter. Based on this, applying light-absorbing heat-generating materials to textiles can effectively solve this problem.

[0003] At present, people mostly apply traditional light-absorbing heat-generating materials to fabrics, such as zirconium carbide, zirconium oxide, titanium dioxide and other light-absorbing heat-storage materials. However, these traditional light-absorbing heat-storage materials have limited temperature rise when exposed to light, and the improvement of the warmth and heat storage performance of textiles in winter is also limited. In response to the above problems, a solution is proposed below. Summary of the invention

[0004] The purpose of the present invention is to provide a high-performance light-absorbing heat-storing warm-keeping fabric and a preparation method thereof, which has the advantage of having a higher temperature rise range under light conditions.

[0005] The above technical objectives of the present invention are achieved through the following technical solutions: A high-performance light-absorbing heat-storing thermal insulation fabric comprises a base fabric and a light-absorbing heat-storing slurry coated on the surface of the base fabric, wherein the base fabric is a graphene polyester fabric, and the light-absorbing heat-storing slurry is a polyurethane-based light-absorbing heat-storing thermal liquid coating slurry; the graphene polyester fabric is formed by interweaving polyester fibers containing graphene and ordinary polyester fibers, and the proportion of polyester fibers containing graphene in the graphene polyester fabric is 50%.

[0006] Preferably, the raw materials of the polyurethane-based light-absorbing and water-storing water coating slurry include, by weight: 40-70 parts of light-absorbing heat-storage material, 20-50 parts of waterborne polyurethane, 0.1-0.5 parts of thickener, 0.5-2 parts of dispersant, and 0.1-1 parts of defoamer.

[0007] Preferably, the light-absorbing and heat-storage material is a graphene oxide aqueous dispersion, which comprises a single-layer graphene oxide powder, water and a dispersant, and the solid content of the single-layer graphene oxide powder is 10 mg / g.

[0008] Preferably, the average particle size of the single-layer graphene oxide powder is 5-50 µm.

[0009] Preferably, the waterborne polyurethane is an anionic aliphatic waterborne polyurethane dispersion, the solid content of the waterborne polyurethane is 35%, the viscosity is 300 mPa.s, and the pH value is 6-7.

[0010] Preferably, the thickener is one or more of a polyurethane thickener or a polyacrylate thickener.

[0011] Preferably, the dispersant is one or more of polyvinyl pyrrolidone, aqueous conductive carbon black dispersant, polyethylene glycol, polyoxyethylene, sodium dodecyl sulfate, and sodium dodecylbenzene sulfonate.

[0012] Preferably, the defoamer is an organosilicon defoamer having a solid content of 15% and a pH value of 8-9.

[0013] Preferably, the preparation method of the polyurethane-based light-absorbing and water-storing water coating slurry is: The graphene oxide aqueous dispersion was added to the aqueous polyurethane solution and stirred for 5 minutes. Then, the dispersant and defoaming agent were added in sequence. After stirring evenly, the thickener was added. Then, ultrasonic oscillation was performed at room temperature to make the slurry fully mixed. Finally, residual bubbles were removed by vacuum degassing.

[0014] A method for preparing a high-performance light-absorbing heat-storing warm-keeping fabric comprises the following steps: S1, weigh the raw materials of the polyurethane-based light-absorbing and water-storing water-soluble coating slurry and mix them evenly, and then apply them to the base fabric graphene polyester fabric, with a coating thickness of 0.1-0.5 mm; S2. Place the coated fabric in an oven and bake at 90°C for 30 minutes to dry and solidify it.

[0015] The beneficial effects of the present invention are: 1. The present invention utilizes the excellent photothermal effect of graphene to prepare thermal insulation fabrics. Graphene has higher carrier mobility and lower resistivity, which makes it have a very high photothermal conversion efficiency. Applying graphene to fabrics can make the fabrics have the characteristics of fast heating speed and high heating range under light conditions.

[0016] 2. The polyurethane-based light-absorbing and heat-storing water-soluble coating slurry prepared by the present invention has the characteristics of simple preparation method and reliable thermal insulation performance. Coating it on the surface of fabric can make the fabric have the thermal insulation properties of light absorption and heat storage. The slurry is suitable for large-scale industrial production.

[0017] 3. The present invention coats the polyurethane-based light-absorbing and heat-storing water-soluble coating slurry onto the graphene polyester fabric. The combination of the two can further enhance the warmth retention performance of the fabric, making it have stronger light-absorbing and heat-storing performance under light conditions. DETAILED DESCRIPTION

[0018] The following is only a preferred embodiment of the present invention, and the protection scope is not limited to this embodiment. All technical solutions under the concept of the present invention should belong to the protection scope of the present invention.

[0019] A high-performance light-absorbing heat-storing thermal insulation fabric in this embodiment includes a base graphene polyester fabric and a light-absorbing heat-storing slurry coated on the surface thereof, wherein the light-absorbing heat-storing slurry is a polyurethane-based light-absorbing heat-storing water-soluble coating slurry, which comprises, by weight, 42.5 parts of graphene oxide aqueous dispersion, 57.5 parts of water-based polyurethane, 0.3 parts of thickener, 0.5 parts of dispersant, and 0.2 parts of defoaming agent.

[0020] The light-absorbing heat-storage slurry is a polyurethane-based light-absorbing heat-storage water coating slurry, and the preparation method thereof is as follows: 17g of 1% graphene oxide aqueous phase dispersion is added to 23g of 35% aqueous polyurethane solution, stirred for 2min, and then ultrasonically oscillated for 15min, then 0.2g of aqueous conductive carbon black dispersant and 0.08g of silicone defoamer are added in sequence, stirred for 15min, and then 0.12g of polyurethane thickener is added, stirred for 2min, and then ultrasonically oscillated for 30min at room temperature to fully mix the slurry, and finally vacuum degassing for 6min. The content of monolayer graphene oxide in the polyurethane-based light-absorbing heat-storage water coating slurry is 0.425%.

[0021] The preparation method of the high-performance light-absorbing heat-storing warm-keeping fabric is as follows: S1. Weigh the raw materials of the polyurethane-based light-absorbing and water-storing water-soluble coating slurry and mix them evenly, then apply them on the base cloth graphene polyester fabric with a coating thickness of 0.1 mm.

[0022] S2. Place the coated fabric in an oven and bake at 90°C for 30 minutes to dry and solidify it.

[0023] A high-performance light-absorbing heat-storage thermal insulation fabric in this embodiment includes a base graphene polyester fabric and a light-absorbing heat-storage slurry coated on the surface thereof, wherein the light-absorbing heat-storage slurry is a polyurethane-based light-absorbing heat-storage water-soluble coating slurry, which comprises, by weight, 62.5 parts of graphene oxide aqueous dispersion, 37.5 parts of water-based polyurethane, 0.3 parts of thickener, 0.5 parts of dispersant, and 0.2 parts of defoaming agent.

[0024] The light-absorbing heat-storage slurry is a polyurethane-based light-absorbing heat-storage water coating slurry, and the preparation method thereof is as follows: 50g of 1% graphene oxide aqueous phase dispersion is added to 30g of 35% aqueous polyurethane solution, stirred for 2min, and then ultrasonically oscillated for 15min, and then 0.4g of aqueous conductive carbon black dispersant and 0.16g of silicone defoamer are added in sequence, stirred for 15min, and then 0.24g of polyurethane thickener is added, stirred for 2min, and then ultrasonically oscillated for 45min at room temperature to fully mix the slurry, and finally vacuum degassing for 6min. The content of monolayer graphene oxide in the polyurethane-based light-absorbing heat-storage water coating slurry is 0.625%.

[0025] The preparation method of the high-performance light-absorbing heat-storing warm-keeping fabric is as follows: S1. Weigh the raw materials of the polyurethane-based light-absorbing and water-storing water-soluble coating slurry and mix them evenly, then apply them on the base cloth graphene polyester fabric with a coating thickness of 0.1 mm.

[0026] S2. Place the coated fabric in an oven and bake at 90°C for 30 minutes to dry and solidify it.

[0027] A high-performance light-absorbing heat-storing thermal insulation fabric in this embodiment includes a base graphene polyester fabric and a light-absorbing heat-storing slurry coated on the surface thereof, wherein the light-absorbing heat-storing slurry is a polyurethane-based light-absorbing heat-storing water-soluble coating slurry, which comprises, by weight, 72.5 parts of graphene oxide aqueous dispersion, 27.5 parts of water-based polyurethane, 0.15 parts of thickener, 0.5 parts of dispersant, and 0.2 parts of defoaming agent.

[0028] The light-absorbing heat-storage slurry is a polyurethane-based light-absorbing heat-storage water coating slurry, and its preparation method is as follows: 33g of 1% graphene oxide aqueous phase dispersion is added to 12.52g of 35% aqueous polyurethane solution, stirred for 2min, and then ultrasonically oscillated for 15min, then 0.23g of aqueous conductive carbon black dispersant and 0.09g of silicone defoamer are added in sequence, stirred for 15min, and then 0.07g of polyurethane thickener is added, stirred for 2min, and then ultrasonically oscillated for 25min at room temperature to fully mix the slurry, and finally vacuum degassing for 6min. The content of monolayer graphene oxide in the polyurethane-based light-absorbing heat-storage water coating slurry is 0.725%.

[0029] The preparation method of the high-performance light-absorbing heat-storing warm-keeping fabric is as follows: S1. Weigh the raw materials of the polyurethane-based light-absorbing and water-storing water-soluble coating slurry and mix them evenly, then apply them on the base cloth graphene polyester fabric with a coating thickness of 0.1 mm.

[0030] S2. Place the coated fabric in an oven and bake at 90°C for 30 minutes to dry and solidify it.

[0031] Comparative Example 1 Ordinary polyester fabric without any treatment.

[0032] Comparative Example 2 Graphene polyester fabric without any treatment.

[0033] Comparative Example 3 Weigh 65g of 35% aqueous polyurethane solution, add 0.13g of silicone defoamer and 0.33g of polyurethane thickener in turn, stir for 2min, and then ultrasonically oscillate for 25min at room temperature to fully mix the slurry, vacuum degas for 6min, and then scrape it onto the base fabric graphene polyester fabric with a coating thickness of 0.1mm. Finally, place the coated fabric in an oven and bake at 90℃ for 30min to dry and solidify it.

[0034] Performance Test: Light absorption and heat storage performance test: First, use an infrared thermal imager to test and record the surface temperature (℃) of the thermal insulation fabric before illumination. Then place the thermal insulation fabric under external sunlight. Under the conditions of ambient temperature of 38℃, humidity of 55%, no wind, and light intensity of 190W / ㎡, use an infrared thermal imager to test and record the surface temperature (℃) of the thermal insulation fabric after 2min, 5min, and 10min of illumination. The temperature measurement equipment is the infrared thermal imager T540 (FLIR).

[0035] The performance of the fabrics of each embodiment and comparative example was tested, and the test results are recorded in Table 1.

[0036] Table 1 Test of light absorption and heat storage performance of various types of thermal insulation fabrics Temperature before light exposure (℃) Temperature after 2 minutes of illumination (℃) Temperature after 5 minutes of illumination (℃) Temperature after 10 minutes of illumination (℃) Example 1 26.7 80.7 81.9 83.0 Example 2 26.7 84.7 85.0 85.3 Example 3 26.4 83.8 84.0 85.1 Comparative Example 1 26.5 60.5 59.2 60.8 Comparative Example 2 26.4 65.3 63.1 64.8 Comparative Example 3 26.7 67.8 66.2 68.1 By comparing Comparative Example 1 and Comparative Example 2, it can be found that under the same lighting conditions, the graphene polyester fabric has a higher temperature rise amplitude and a faster temperature rise speed than the ordinary polyester fabric, and the graphene polyester fabric has a better warming effect.

[0037] By comparing Comparative Examples 1-3 and Examples 1-3, it can be found that under the same lighting conditions, the temperature rise of the graphene polyester fabric coated with the polyurethane-based light-absorbing and water-storing thermal liquid coating slurry is 22.2-24.3°C higher than that of the ordinary polyester fabric, and the temperature rise of the graphene polyester fabric coated with the polyurethane-based light-absorbing and water-storing thermal liquid coating slurry is 18.2-20.5°C higher than that of the uncoated graphene polyester fabric.

[0038] The above experimental results show that the high-performance light-absorbing heat-storage thermal insulation fabric prepared by the present invention has excellent thermal insulation effect and excellent light-heat storage performance. Compared with ordinary thermal insulation fabrics, it has the characteristics of high temperature rise amplitude and fast temperature rise speed.

[0039] The specific embodiments described above further illustrate the technical problems, technical solutions and beneficial effects solved by the present invention. It should be understood that the above are only specific embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A high-performance light-absorbing heat-storing warm-keeping fabric, comprising a base fabric and a light-absorbing heat-storing slurry coated on the surface thereof, characterized in that: The base fabric is graphene polyester fabric, and the light-absorbing and heat-storing slurry is a polyurethane-based light-absorbing and heat-storing water-soluble coating slurry; the graphene polyester fabric is formed by interweaving polyester fibers containing graphene with ordinary polyester fibers, and the proportion of polyester fibers containing graphene in the graphene polyester fabric is 50%.

2. A high-performance light-absorbing heat-storing warm-keeping fabric according to claim 1, characterized in that: The raw materials of the polyurethane-based light-absorbing and water-storing water coating slurry include, by weight: 40-70 parts of light-absorbing heat-storage material, 20-50 parts of waterborne polyurethane, 0.1-0.5 parts of thickener, 0.5-2 parts of dispersant, and 0.1-1 parts of defoamer.

3. A high-performance light-absorbing heat-storing warm-keeping fabric according to claim 2, characterized in that: The light-absorbing and heat-storage material is a graphene oxide aqueous dispersion, which comprises a single-layer graphene oxide powder, water and a dispersant. The solid content of the single-layer graphene oxide powder is 10 mg / g.

4. The high-performance light-absorbing heat-storing warm-keeping fabric according to claim 3, characterized in that: The average particle size of the single-layer graphene oxide powder is 5-50 μm.

5. The high-performance light-absorbing heat-storing warm-keeping fabric according to claim 2, characterized in that: The waterborne polyurethane is an anionic aliphatic waterborne polyurethane dispersion, and the solid content of the waterborne polyurethane is 35%, the viscosity is 300 mPa.s, and the pH value is 6-7.

6. The high-performance light-absorbing heat-storing warm-keeping fabric according to claim 2, characterized in that: The thickener is one or more of a polyurethane thickener or a polyacrylate thickener.

7. The high-performance light-absorbing heat-storing warm-keeping fabric according to claim 2, characterized in that: The dispersant is one or more of polyvinyl pyrrolidone, aqueous conductive carbon black dispersant, polyethylene glycol, polyoxyethylene, sodium dodecyl sulfate, and sodium dodecylbenzene sulfonate.

8. The high-performance light-absorbing heat-storing warm-keeping fabric according to claim 2, characterized in that: The defoamer is an organosilicon defoamer with a solid content of 15% and a pH value of 8-9.

9. The high-performance light-absorbing heat-storing warm-keeping fabric according to claim 2, characterized in that: The preparation method of the polyurethane-based light-absorbing and heat-storing water-soluble coating slurry is as follows: The graphene oxide aqueous dispersion was added to the aqueous polyurethane solution and stirred for 5 minutes. Then, the dispersant and defoaming agent were added in sequence. After stirring evenly, the thickener was added. Then, ultrasonic oscillation was performed at room temperature to make the slurry fully mixed. Finally, residual bubbles were removed by vacuum degassing.

10. A method for preparing a high-performance light-absorbing heat-storing warm-keeping fabric according to any one of claims 1 to 9, characterized in that: The following steps are involved: S1, weigh the raw materials of the polyurethane-based light-absorbing and water-storing water-soluble coating slurry and mix them evenly, and then apply them to the base fabric graphene polyester fabric, with a coating thickness of 0.1-0.5 mm; S2. Place the coated fabric in an oven and bake at 90°C for 30 minutes to dry and solidify it.