Fabric composite material as well as preparation method and application thereof

Abstract

The invention belongs to the field of fabric materials, and particularly relates to a fabric composite material and a preparation method and application thereof. The fabric composite material provided by the invention comprises a fabric layer, a first refrigeration layer arranged on the surface of one side of the fabric layer, a second refrigeration layer arranged on the surface of the first refrigeration layer, a third refrigeration layer arranged on the surface of the second refrigeration layer, and a heating layer arranged on the surface of the other side of the fabric layer, wherein the first refrigeration layer contains titanium dioxide with the particle size of 700-900 nm, the second refrigeration layer contains titanium dioxide with the particle size of 300-500 nm, the third refrigeration layer contains barium sulfate with the particle size of 150-250 nm, and the heating layer contains carbon black. According to the fabric composite material provided by the invention, switching between a refrigerating function and a heating function can be realized by turning over the exposed surface of the material, and the material has good refrigerating and heating effects and does not need to consume extra energy.

Description

Technical Field

[0001] The invention belongs to the field of fabric materials, and in particular relates to a fabric composite material and a preparation method and application thereof. Background Art

[0002] Outdoor fabrics are widely used in outdoor sports, camping, military, sailing and other fields. With the popularity of outdoor activities, people have higher and higher requirements for the performance of outdoor fabrics, especially under extreme climate conditions. How to effectively manage the thermal properties of fabrics has become a technical challenge. Traditional outdoor fabrics often only have basic protective functions, such as waterproof and windproof, but perform poorly in temperature regulation. Therefore, researchers have been exploring how to give fabrics more functions, such as temperature regulation and humidity control, through materials science and engineering technology.

[0003] Currently, there are some products on the market that attempt to improve the thermal management performance of fabrics through coating or lamination technology. For example, some fabrics reflect sunlight and reduce heat absorption by adding reflective materials to achieve a cooling effect in summer. However, these technologies can only reflect spectra in specific bands, with general cooling effects and insufficient performance in heating. In addition, these technologies usually require complex production processes and additional energy input, which limits their widespread application. Summary of the invention

[0004] In view of this, the object of the present invention is to provide a fabric composite material and a preparation method and application thereof. The fabric composite material provided by the present invention can achieve switching between cooling and heating functions by flipping the exposed surface of the material. The material has good cooling and heating effects without consuming additional energy.

[0005] The present invention provides a fabric composite material, comprising: a fabric layer, a first refrigeration layer arranged on the surface of one side of the fabric layer, a second refrigeration layer arranged on the surface of the first refrigeration layer, a third refrigeration layer arranged on the surface of the second refrigeration layer, and a heating layer arranged on the surface of the other side of the fabric layer; wherein the first refrigeration layer contains 700-900nm titanium dioxide, the second refrigeration layer contains 300-500nm titanium dioxide, the third refrigeration layer contains 150-250nm barium sulfate, and the heating layer contains carbon black.

[0006] Preferably, the first refrigeration layer further contains polyurethane; the mass ratio of 700-900nm titanium dioxide to polyurethane in the first refrigeration layer is (5-15):90; the surface density of the first refrigeration layer is 10-20g / m 2 .

[0007] Preferably, the second refrigeration layer further contains polyurethane; the mass ratio of 300-500nm titanium dioxide to polyurethane in the second refrigeration layer is (5-15):90; the surface density of the second refrigeration layer is 10-20g / m 2 .

[0008] Preferably, the third refrigeration layer further contains polyurethane; the mass ratio of 150-250nm barium sulfate to polyurethane in the third refrigeration layer is (5-15):90; the surface density of the third refrigeration layer is 10-20g / m 2 .

[0009] Preferably, the heating layer further contains polyurethane; the mass ratio of carbon black to polyurethane in the heating layer is (5-15):90; the surface density of the heating layer is 10-20 g / m 2 .

[0010] Preferably, the particle size of the carbon black is 5 to 20 nm.

[0011] Preferably, the fabric layer is a fabric layer whose surface has been modified with isocyanate.

[0012] The present invention provides a method for preparing the fabric composite material described in the above technical solution, comprising the following steps:

[0013] A cooling layer coating containing 700-900 nm titanium dioxide is coated on one surface of the fabric layer and dried to form a first cooling layer;

[0014] Coating a cooling layer coating containing 300-500nm of titanium dioxide on the surface of the first cooling layer, and drying to form a second cooling layer;

[0015] Coating a cooling layer coating containing 150-250nm of barium sulfate on the surface of the second cooling layer, and drying to form a third cooling layer;

[0016] A heating layer coating containing carbon black is coated on the other side surface of the fabric layer, and the heating layer is formed by drying to obtain a fabric composite material.

[0017] Preferably, the fabric layer is surface treated before coating, and the specific treatment process includes:

[0018] Firstly, the fabric layer is subjected to corona treatment, and then the corona treated fabric layer is immersed in an isocyanate solution for chemical modification to obtain a treated fabric layer.

[0019] The present invention provides an application of the fabric composite material described in the above technical solution or the fabric composite material prepared by the preparation method described in the above technical solution in outdoor clothing, tents, air-film buildings or capsule materials.

[0020] Compared with the prior art, the present invention provides a fabric composite material and its preparation method and application. The fabric composite material provided by the present invention comprises: a fabric layer, a first cooling layer arranged on the surface of one side of the fabric layer, a second cooling layer arranged on the surface of the first cooling layer, a third cooling layer arranged on the surface of the second cooling layer, and a heating layer arranged on the surface of the other side of the fabric layer; wherein the first cooling layer contains 700-900nm titanium dioxide, the second cooling layer contains 300-500nm titanium dioxide, the third cooling layer contains 150-250nm barium sulfate, and the heating layer contains carbon black. The present invention provides a cooling layer and a heating layer respectively arranged on both sides of the fabric, thereby realizing the dual functions of cooling and heating. The refrigeration mechanism is as follows: the energy of sunlight in different wavelength bands is different, the energy in the ultraviolet band (200-400nm) accounts for 7%, the energy in the visible light band (400-760nm) accounts for 50%, and the energy in the near-infrared band (760-2500nm) accounts for 43%. At the same time, the paths of light of different wavelengths in the material are different, the ultraviolet light path is the shortest, the visible light path is in the middle, and the near-infrared path is the longest. According to the principle of Mie scattering, the wavelength of the reflected sunlight is proportional to the particle size. For this reason, the present invention designs three refrigeration layers, the upper layer is a barium sulfate layer with a small particle size, which is mainly responsible for reflecting the ultraviolet light segment with a shorter path, the middle layer is a titanium dioxide layer with a medium particle size, which is mainly responsible for reflecting the visible light segment with a central path, and the bottom layer is a titanium dioxide layer with a large particle size, which is mainly responsible for reflecting the near-infrared segment with the longest path. Therefore, the refrigeration layer with a three-layer structure can effectively reflect the energy of the ultraviolet, visible light and near-infrared segments within the range of 200-2500nm to achieve effective refrigeration. The heating mechanism is: through the high absorption properties of carbon black, most of the sunlight is absorbed to achieve heating. The fabric composite material provided by the present invention can switch between cooling and heating functions by flipping the exposed surface of the material. The operation is simple, and no energy input is required for the cooling and heating processes. It conforms to the concept of circular development and can meet the needs of outdoor applications. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0022] Figure 1 It is a schematic diagram of the structure of a fabric composite material provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present invention are described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0024] The present invention provides a fabric composite material, comprising: a fabric layer, a first refrigeration layer arranged on the surface of one side of the fabric layer, a second refrigeration layer arranged on the surface of the first refrigeration layer, a third refrigeration layer arranged on the surface of the second refrigeration layer, and a heating layer arranged on the surface of the other side of the fabric layer; wherein the first refrigeration layer contains 700-900nm titanium dioxide, the second refrigeration layer contains 300-500nm titanium dioxide, the third refrigeration layer contains 150-250nm barium sulfate, and the heating layer contains carbon black.

[0025] In the fabric composite material provided by the present invention, the fabric layer is a common fabric, including natural fiber fabric and / or artificial fiber fabric; wherein the natural fiber fabric includes but is not limited to one or more of cotton fabric, linen fabric and silk fabric; the artificial fiber fabric includes but is not limited to one or more of acetate fabric, polyester fabric, nylon fabric, polyester fabric and acrylic fabric.

[0026] In the fabric composite material provided by the present invention, the particle size of titanium dioxide in the first refrigeration layer can be 700nm, 750nm, 800nm, 850nm or 900nm, and most preferably 800nm; the first refrigeration layer preferably further contains polyurethane; the mass ratio of titanium dioxide to polyurethane in the first refrigeration layer is preferably (5-15):90, and can be specifically 5:90, 6:90, 7:90, 8:90, 9:90, 10:90, 11:90, 12:90, 13:90, 14:90 or 15:90; the surface density of the first refrigeration layer is preferably 10-20g / m 2 , specifically 10g / m 2 , 11g / m 2 , 12g / m 2 , 13g / m 2 , 14g / m 2 , 15g / m 2 , 16g / m 2 , 17g / m 2 , 18g / m 2 , 19g / m 2 or 20g / m 2 .

[0027] In the fabric composite material provided by the present invention, the particle size of titanium dioxide in the second refrigeration layer can be 300nm, 350nm, 400nm, 450nm or 500nm, and most preferably 400nm; the second refrigeration layer preferably further contains polyurethane; the mass ratio of titanium dioxide to polyurethane in the second refrigeration layer is preferably (5-15):90, and can be specifically 5:90, 6:90, 7:90, 8:90, 9:90, 10:90, 11:90, 12:90, 13:90, 14:90 or 15:90; the surface density of the second refrigeration layer is preferably 10-20g / m 2 , specifically 10g / m 2 , 11g / m 2 , 12g / m 2 , 13g / m 2 , 14g / m 2 , 15g / m 2 , 16g / m 2 , 17g / m 2 , 18g / m 2 , 19g / m 2 or 20g / m 2 .

[0028] In the fabric composite material provided by the present invention, the particle size of barium sulfate in the third refrigeration layer can be specifically 150nm, 200nm or 250nm, and most preferably 200nm; the third refrigeration layer preferably further contains polyurethane; the mass ratio of barium sulfate to polyurethane in the third refrigeration layer is preferably (5-15):90, and can be specifically 5:90, 6:90, 7:90, 8:90, 9:90, 10:90, 11:90, 12:90, 13:90, 14:90 or 15:90; the surface density of the third refrigeration layer is preferably 10-20g / m 2 , specifically 10g / m 2 , 11g / m 2 , 12g / m 2 , 13g / m 2 , 14g / m 2 , 15g / m 2 , 16g / m 2 , 17g / m 2 , 18g / m 2 , 19g / m 2 or 20g / m 2 .

[0029] In the fabric composite material provided by the present invention, the particle size of the carbon black in the heating layer is preferably 5-20 nm, specifically 5 nm, 8 nm, 10 nm, 13 nm, 15 nm, 18 nm or 20 nm, and most preferably 13; the heating layer preferably further contains polyurethane; the mass ratio of carbon black to polyurethane in the heating layer is preferably (5-15):90, specifically 5:90, 6:90, 7:90, 8:90, 9:90, 10:90, 11:90, 12:90, 13:90, 14:90 or 15:90; the surface density of the heating layer is preferably 10-20 g / m 2 , specifically 10g / m 2 , 11g / m 2 , 12g / m 2 , 13g / m 2 , 14g / m 2 , 15g / m 2 , 16g / m 2 , 17g / m 2 , 18g / m 2 , 19g / m 2 or 20g / m 2 .

[0030] In the fabric composite material provided by the present invention, the fabric layer is preferably a fabric layer whose surface has been modified with isocyanate. Isocyanate molecules contain highly active -NCO groups, which can react with functional groups such as hydroxyl (-OH) and amino (-NH2) on the fabric layer to form carbamate or urea bonds, thereby introducing polar functional groups on the surface of the fabric layer. These polar functional groups can increase the polarity of the surface of the fabric layer, thereby improving the compatibility and adhesion between the fabric layer and polyurethane.

[0031] The present invention also provides a method for preparing the fabric composite material described in the above technical solution, comprising the following steps:

[0032] A cooling layer coating containing 700-900 nm titanium dioxide is coated on one surface of the fabric layer and dried to form a first cooling layer;

[0033] Coating a cooling layer coating containing 300-500nm of titanium dioxide on the surface of the first cooling layer, and drying to form a second cooling layer;

[0034] Coating a cooling layer coating containing 150-250nm of barium sulfate on the surface of the second cooling layer, and drying to form a third cooling layer;

[0035] A heating layer coating containing carbon black is coated on the other side surface of the fabric layer, and the heating layer is formed by drying to obtain a fabric composite material.

[0036] In the preparation method provided by the present invention, the fabric layer is first subjected to surface treatment before coating, and the specific treatment process includes: firstly subjecting the fabric layer to corona treatment, and then immersing the corona-treated fabric layer in an isocyanate solution for chemical modification to obtain the treated fabric layer. The setting power of the treatment machine used for the corona treatment is preferably 10 to 30 kW, more preferably 20 kW; the temperature of the chemical modification is preferably 50 to 80°C, more preferably 60°C; the time of the chemical modification is preferably 0.5 to 2 hours, more preferably 1 hour.

[0037] In the preparation method provided by the present invention, during the preparation of the first refrigeration layer, the components of the refrigeration layer coating also include polyurethane and an organic solvent, the organic solvent includes but is not limited to N,N-dimethylformamide (DMF), the polyurethane preferably accounts for 5-15wt% of the total mass of the polyurethane and the organic solvent, more preferably 10wt%; the drying temperature is preferably 60-100°C, more preferably 80°C; the drying time is preferably 0.5-2h, more preferably 1h.

[0038] In the preparation method provided by the present invention, during the preparation of the second refrigeration layer, the components of the refrigeration layer coating also include polyurethane and an organic solvent, the organic solvent includes but is not limited to N,N-dimethylformamide (DMF), the polyurethane preferably accounts for 5-15wt% of the total mass of the polyurethane and the organic solvent, more preferably 10wt%; the drying temperature is preferably 60-100°C, more preferably 80°C; the drying time is preferably 0.5-2h, more preferably 1h.

[0039] In the preparation method provided by the present invention, during the preparation of the third refrigeration layer, the components of the refrigeration layer coating also include polyurethane and an organic solvent, the organic solvent includes but is not limited to N,N-dimethylformamide (DMF), the polyurethane preferably accounts for 5-15wt% of the total mass of the polyurethane and the organic solvent, more preferably 10wt%; the drying temperature is preferably 60-100°C, more preferably 80°C; the drying time is preferably 0.5-2h, more preferably 1h.

[0040] In the preparation method provided by the present invention, during the preparation of the heating layer, the components of the heating layer coating also include polyurethane and an organic solvent, the organic solvent includes but is not limited to N,N-dimethylformamide (DMF), the polyurethane preferably accounts for 5-15wt% of the total mass of the polyurethane and the organic solvent, more preferably 10wt%; the drying temperature is preferably 60-100°C, more preferably 80°C; the drying time is preferably 0.5-2h, more preferably 1h.

[0041] The present invention also provides an application of the fabric composite material described in the above technical solution or the fabric composite material prepared by the preparation method described in the above technical solution in outdoor clothing, tents, air-film buildings or capsule materials.

[0042] The technical solution provided by the present invention realizes the dual functions of cooling and heating by respectively arranging a cooling layer and a heating layer on both sides of the fabric. The fabric composite material can realize the switching of cooling and heating functions by flipping the exposed surface of the material, which is simple to operate, has good cooling and heating effects, and does not require energy input during the cooling and heating processes, conforms to the concept of circular development and can meet the needs of outdoor applications.

[0043] For the purpose of greater clarity, the present invention is described in detail with reference to the following examples and comparative examples.

[0044] In the following examples and comparative examples provided by the present invention, the polyurethane used is provided by Huntsman, and the typical physical properties of the polyurethane after film formation are shown in Table 1:

[0045] Table 1

[0046] Typical properties Test Standards Test Results Shore A hardness ISO7619 86 Shore Hardness D ISO7619 36 Tensile strength(MPa) DIN53504 35 Elongation(%) DIN53504 600 100% tensile modulus (MPa) DIN53504 5.9 300% tensile modulus (MPa) DIN53504 11.2 Compression set (%) 23℃×70 hours ISO815 25 Compression set (%) 23℃×24 hours ISO815 50 <![CDATA[Wear (mm 3 )]]> ISO4649 25 Tear strength (kN / m) ISO34-1 65 Rebound rate (%) ASTMD-2632 35 <![CDATA[Density (g / cm 3 )]]> ISO1183-1 1.21 Appearance transparent

[0047] Example 1

[0048] Preparation Figure 1 The fabric composite material of the structure shown in the figure has the following specific process:

[0049] (1) Prepare polyarylate fiber fabric (surface density 90 g / m 2 ), clean the fabric to ensure that the fabric surface is clean and dust-free, without grease, dirt or other impurities; use a corona treatment machine, set the power to 20kw, and perform corona treatment on the fabric; then, immerse the corona-treated fabric in an isocyanate solution for chemical modification, the chemical modification temperature is 60°C, and the time is 1h; after the chemical modification is completed, take out and dry for standby use;

[0050] (2) coating a first cooling layer coating on one side of the fabric after treatment in step (1), wherein the coating comprises 800 nm titanium dioxide, polyurethane and DMF, wherein the mass ratio of 800 nm titanium dioxide to polyurethane is 1:9, and polyurethane accounts for 10 wt% of the total mass of polyurethane and DMF; after coating, drying is performed at 80° C. for 1 h to form a first cooling layer (surface density 15 g / m 2 );

[0051] (3) coating the surface of the first cooling layer of the fabric after treatment in step (2) with a second cooling layer coating, wherein the coating comprises 400 nm titanium dioxide, polyurethane and DMF, wherein the mass ratio of 400 nm titanium dioxide to polyurethane is 1:9, and polyurethane accounts for 10 wt % of the total mass of polyurethane and DMF; after coating, drying is performed at 80° C. for 1 h to form a second cooling layer (surface density 15 g / m 2 );

[0052] (4) coating the surface of the second cooling layer of the fabric after treatment in step (3) with a third cooling layer coating, wherein the coating comprises 200 nm barium sulfate, polyurethane and DMF, wherein the mass ratio of 200 nm barium sulfate to polyurethane is 1:9, and polyurethane accounts for 10 wt % of the total mass of polyurethane and DMF; after coating, drying at 80° C. for 1 h to form a third cooling layer (surface density 15 g / m 2 );

[0053] (5) A heating layer coating is applied to the other side of the fabric after the treatment in step (4), wherein the coating comprises carbon black (Raven 5000 Ultra, particle size 13 nm), polyurethane and DMF, wherein the mass ratio of carbon black to polyurethane is 1:9, and polyurethane accounts for 10 wt % of the total mass of polyurethane and DMF; after coating, the fabric is dried at 80° C. for 1 h to form a heating layer (surface density 15 g / m 2 ),get Figure 1 Textile composite material of the structure shown.

[0054] Comparative Example 1

[0055] The single-coated fabric composite material was prepared as follows:

[0056] (1) Prepare polyarylate fiber fabric (surface density 90 g / m 2 ), clean the fabric to ensure that the fabric surface is clean and dust-free, without grease, dirt or other impurities; use a corona treatment machine, set the power to 20kw, and perform corona treatment on the fabric; then, immerse the corona-treated fabric in an isocyanate solution for chemical modification, the chemical modification temperature is 60°C, and the time is 1h; after the chemical modification is completed, take out and dry for standby use;

[0057] (2) coating a cooling layer coating on one side of the fabric after treatment in step (1), wherein the coating comprises 200 nm barium sulfate, polyurethane and DMF, wherein the mass ratio of 200 nm barium sulfate to polyurethane is 1:9, and polyurethane accounts for 10 wt% of the total mass of polyurethane and DMF; after coating, drying is performed at 80° C. for 1 h to form a cooling layer (surface density 15 g / m 2 ), to obtain a single-coated fabric composite material.

[0058] Comparative Example 2

[0059] The single-coated fabric composite material was prepared as follows:

[0060] (1) Prepare polyarylate fiber fabric (surface density 90 g / m 2 ), clean the fabric to ensure that the fabric surface is clean and dust-free, without grease, dirt or other impurities; use a corona treatment machine, set the power to 20kw, and perform corona treatment on the fabric; then, immerse the corona-treated fabric in an isocyanate solution for chemical modification, the chemical modification temperature is 60°C, and the time is 1h; after the chemical modification is completed, take out and dry for standby use;

[0061] (2) coating a cooling layer coating on one side of the fabric after treatment in step (1), wherein the coating comprises 400 nm titanium dioxide, polyurethane and DMF, wherein the mass ratio of 400 nm titanium dioxide to polyurethane is 1:9, and polyurethane accounts for 10 wt% of the total mass of polyurethane and DMF; after coating, drying is performed at 80° C. for 1 h to form a cooling layer (surface density 15 g / m 2 ), to obtain a single-coated fabric composite material.

[0062] Comparative Example 3

[0063] The single-coated fabric composite material was prepared as follows:

[0064] (1) Prepare polyarylate fiber fabric (surface density 90 g / m 2 ), clean the fabric to ensure that the fabric surface is clean and dust-free, without grease, dirt or other impurities; use a corona treatment machine, set the power to 20kw, and perform corona treatment on the fabric; then, immerse the corona-treated fabric in an isocyanate solution for chemical modification, the chemical modification temperature is 60°C, and the time is 1h; after the chemical modification is completed, take out and dry for standby use;

[0065] (2) coating a cooling layer coating on one side of the fabric after treatment in step (1), wherein the coating comprises 800 nm titanium dioxide, polyurethane and DMF, wherein the mass ratio of 800 nm titanium dioxide to polyurethane is 1:9, and polyurethane accounts for 10 wt% of the total mass of polyurethane and DMF; after coating, drying is performed at 80° C. for 1 h to form a cooling layer (surface density 15 g / m 2 ), to obtain a single-coated fabric composite material.

[0066] Comparative Example 4

[0067] The single-coated fabric composite material was prepared as follows:

[0068] (1) Prepare polyarylate fiber fabric (surface density 90 g / m 2), clean the fabric to ensure that the fabric surface is clean and dust-free, without grease, dirt or other impurities; use a corona treatment machine, set the power to 20kw, and perform corona treatment on the fabric; then, immerse the corona-treated fabric in an isocyanate solution for chemical modification, the chemical modification temperature is 60°C, and the time is 1h; after the chemical modification is completed, take out and dry for standby use;

[0069] (2) After the treatment in step (1), a heating layer coating is applied to one side of the fabric surface. The coating comprises carbon black (Raven 5000 Ultra, particle size 13 nm), polyurethane and DMF. The mass ratio of carbon black to polyurethane is 1:9, and the polyurethane accounts for 10 wt% of the total mass of polyurethane and DMF. After the coating is completed, the fabric is dried at 80° C. for 1 h to form a heating layer (surface density 15 g / m 2 ), to obtain a single-coated fabric composite material.

[0070] Comparative Example 5

[0071] The preparation of multi-layer refrigeration fabric composite materials, the specific process is as follows:

[0072] (1) Prepare polyarylate fiber fabric (surface density 90 g / m 2 ), clean the fabric to ensure that the fabric surface is clean and dust-free, without grease, dirt or other impurities; use a corona treatment machine, set the power to 20kw, and perform corona treatment on the fabric; then, immerse the corona-treated fabric in an isocyanate solution for chemical modification, the chemical modification temperature is 60°C, and the time is 1h; after the chemical modification is completed, take out and dry for standby use;

[0073] (2) coating a first cooling layer coating on one side of the fabric after treatment in step (1), wherein the coating comprises 800 nm titanium dioxide, polyurethane and DMF, wherein the mass ratio of 800 nm titanium dioxide to polyurethane is 1:9, and polyurethane accounts for 10 wt% of the total mass of polyurethane and DMF; after coating, drying is performed at 80° C. for 1 h to form a first cooling layer (surface density 15 g / m 2 );

[0074] (3) coating the surface of the first cooling layer of the fabric after treatment in step (2) with a second cooling layer coating, wherein the coating comprises 400 nm titanium dioxide, polyurethane and DMF, wherein the mass ratio of 400 nm titanium dioxide to polyurethane is 1:9, and polyurethane accounts for 10 wt % of the total mass of polyurethane and DMF; after coating, drying is performed at 80° C. for 1 h to form a second cooling layer (surface density 15 g / m 2 );

[0075] (4) coating the surface of the second cooling layer of the fabric after treatment in step (3) with a third cooling layer coating, wherein the coating comprises 200 nm barium sulfate, polyurethane and DMF, wherein the mass ratio of 200 nm barium sulfate to polyurethane is 1:9, and polyurethane accounts for 10 wt % of the total mass of polyurethane and DMF; after coating, drying at 80° C. for 1 h to form a third cooling layer (surface density 15 g / m 2 ) to obtain a multi-refrigeration layer fabric composite material.

[0076] Performance Testing

[0077] The performance tests were conducted on the fabric composite materials prepared in Example 1 and Comparative Examples 1 to 5. The results are shown in Table 2:

[0078] Table 2

[0079]

[0080] It can be seen from Table 2 that the fabric composite material with 200nm barium sulfate as the refrigeration layer filler (Comparative Example 1) has the highest ultraviolet reflectivity of 61.58%, the fabric composite material with 400nm titanium dioxide as the refrigeration layer filler (Comparative Example 2) has the highest visible light reflectivity of 99.17%, and the fabric composite material with 800nm ​​titanium dioxide as the refrigeration layer filler (Comparative Example 3) has the highest near-infrared reflectivity of 82.18%. Therefore, the structural design of the present invention using 200nm barium sulfate to reflect the ultraviolet segment, using 400nm titanium dioxide to reflect the visible light segment, and using 800nm ​​titanium dioxide to reflect the near-infrared segment is reasonable; Comparative Example 4 is a heating layer, so the reflectivity is relatively low, which can ensure that most of the sunlight is absorbed to achieve heating; Comparative Example 5 is a three-layer refrigeration layer, and it can be seen that it has high reflectivity in the ultraviolet segment, the visible light segment and the near-infrared segment; and by comparing Example 1 with Comparative Example 5, it can be seen that the addition of the heating layer has almost no effect on the reflectivity of the refrigeration side, so the structural design of the flip refrigeration and heating fabric provided by the present invention is reasonable and feasible.

[0081] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A fabric composite material, characterized in that: include: A fabric layer, a first refrigeration layer arranged on the surface of one side of the fabric layer, a second refrigeration layer arranged on the surface of the first refrigeration layer, a third refrigeration layer arranged on the surface of the second refrigeration layer, and a heating layer arranged on the surface of the other side of the fabric layer; wherein the first refrigeration layer contains 700-900nm titanium dioxide, the second refrigeration layer contains 300-500nm titanium dioxide, the third refrigeration layer contains 150-250nm barium sulfate, and the heating layer contains carbon black.

2. The textile composite material according to claim 1, characterized in that: The first refrigeration layer also contains polyurethane; the mass ratio of 700-900nm titanium dioxide to polyurethane in the first refrigeration layer is (5-15):90; the surface density of the first refrigeration layer is 10-20g / m 2 .

3. The fabric composite material according to claim 1, characterized in that: The second refrigeration layer also contains polyurethane; the mass ratio of 300-500nm titanium dioxide to polyurethane in the second refrigeration layer is (5-15):90; the surface density of the second refrigeration layer is 10-20g / m 2 .

4. The fabric composite material according to claim 1, characterized in that: The third refrigeration layer also contains polyurethane; the mass ratio of 150-250nm barium sulfate to polyurethane in the third refrigeration layer is (5-15):90; the surface density of the third refrigeration layer is 10-20g / m 2 .

5. The fabric composite material according to claim 1, characterized in that: The heating layer also contains polyurethane; the mass ratio of carbon black to polyurethane in the heating layer is (5-15):90; the surface density of the heating layer is 10-20 g / m 2 .

6. The textile composite material according to claim 1, characterized in that: The particle size of the carbon black is 5 to 20 nm.

7. The fabric composite material according to claim 1, characterized in that: The fabric layer is a fabric layer whose surface is modified by isocyanate.

8. A method for preparing the fabric composite material according to any one of claims 1 to 7, characterized in that: The following steps are involved: A cooling layer coating containing 700-900 nm titanium dioxide is coated on one surface of the fabric layer and dried to form a first cooling layer; Coating a cooling layer coating containing 300-500nm of titanium dioxide on the surface of the first cooling layer, and drying to form a second cooling layer; Coating a cooling layer coating containing 150-250nm of barium sulfate on the surface of the second cooling layer, and drying to form a third cooling layer; A heating layer coating containing carbon black is coated on the other side surface of the fabric layer, and the heating layer is formed by drying to obtain a fabric composite material.

9. The preparation method according to claim 8, characterized in that: The fabric layer is first subjected to surface treatment before coating, and the specific treatment process includes: Firstly, the fabric layer is subjected to corona treatment, and then the corona treated fabric layer is immersed in an isocyanate solution for chemical modification to obtain a treated fabric layer.

10. Use of the fabric composite material according to any one of claims 1 to 7 or the fabric composite material prepared by the preparation method according to any one of claims 8 to 9 in outdoor clothing, tents, air-film buildings or capsule materials.

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