阅读说明：本技术 一种隔热布料及其制备方法 (Heat insulation cloth and preparation method thereof ) 是由 韩继利 于 2019-11-13 设计创作，主要内容包括：本发明公开了一种隔热布料及其制备方法,属于布料加工技术领域,一种隔热布料从上至下依次包括反光层、防辐射层、隔热层及基布层,所述反光层涂有反光涂料,可将太阳光部分反射掉；所述防辐射层为纳米银及纳米二氧化钛的复合层,可阻挡太阳光中的紫外线的透入；所述隔热层中有中空玻璃填充,不仅可反射掉部分太阳光,而且还能阻隔太阳热量的透入。该种隔热布料具有较好的隔热效果,适用于制造挡光布、遮阳伞、遮阳布等需要抵挡太阳光进行隔热的产品,该种隔热布料的制备方法简单,原料来源充足,适用于工业大规模应用。(The invention discloses a heat insulation cloth and a preparation method thereof, belonging to the technical field of cloth processing, the heat insulation cloth sequentially comprises a reflecting layer, a radiation-proof layer, a heat insulation layer and a base cloth layer from top to bottom, wherein the reflecting layer is coated with a reflecting coating and can reflect part of sunlight; the radiation-proof layer is a composite layer of nano silver and nano titanium dioxide and can prevent ultraviolet rays in sunlight from permeating; the heat insulation layer is filled with hollow glass, so that partial sunlight can be reflected, and the penetration of solar heat can be blocked. The heat insulation cloth has a good heat insulation effect, is suitable for manufacturing products needing to resist sunlight for heat insulation, such as light blocking cloth, sunshade umbrella, sunshade cloth and the like, has a simple preparation method and sufficient raw material sources, and is suitable for industrial large-scale application.)

1. A thermal insulation cloth is characterized in that: the radiation-proof heat-insulation cloth comprises a reflecting layer (1), a radiation-proof layer (2), a heat-insulation layer (3) and a base cloth layer (4) from top to bottom in sequence.

2. A thermal insulating cloth according to claim 1, characterized in that: the reflecting layer (1) is coated with a reflecting coating layer.

3. A thermal insulating cloth according to claim 2, characterized in that: the reflective coating is composed of a mixture of the following components in parts by weight: 5-10 parts of reflective powder, 20-40 parts of acrylic resin, 1-5 parts of waterborne epoxy resin, 1-5 parts of dimethyl silicone oil, 1-5 parts of sodium hydroxyethyl cellulose and 30-70 parts of absolute alcohol.

4. A thermal insulating cloth according to claim 1, characterized in that: the radiation-proof layer (2) is a composite layer of nano silver and nano titanium dioxide, and the weight ratio of the nano silver to the nano titanium dioxide in the composite layer is 2: 1.

5. A thermal insulating cloth according to claim 4, characterized in that: the particle size of the nano silver is 10-25nm, and the particle size of the nano titanium dioxide is 50-100 nm.

6. A thermal insulating cloth according to claim 1, characterized in that: the heat insulation layer (3) comprises a nano hollow glass bead layer, and the particle size of the nano hollow glass bead is 100-250 nm.

7. A thermal insulating cloth according to claim 1, characterized in that: the base cloth layer (4) comprises 15 parts of terylene, 35 parts of artificial fiber and 40 parts of cotton fiber.

8. A method for producing a heat insulating cloth according to any one of claims 1 to 7, characterized in that: the method comprises the following steps:

(1) placing 20-40 parts of acrylic resin, 1-5 parts of waterborne epoxy resin, 1-5 parts of dimethyl silicone oil, 1-5 parts of sodium hydroxyethyl cellulose and 30-70 parts of absolute alcohol in a stirrer for mixing, gradually adding 5-10 parts of reflective powder after uniform stirring, and stirring for 0.5-1h at the temperature of 40-50 ℃ to obtain uniform mixed liquid, namely the reflective coating;

(2) weaving 15 parts of terylene, 35 parts of artificial fiber and 40 parts of cotton fiber by a weaving machine to obtain a base cloth layer (4);

(3) uniformly coating the surface of the base cloth layer (4) obtained in the step (2) with the reflective coating obtained in the step (1), repeatedly brushing for three times, and then baking in a baking oven at 50 ℃ for 24 hours to obtain a reflective layer (1);

(4) uniformly covering the surface of the base cloth layer (4) obtained in the step (2) with a nano silver and nano titanium dioxide compound in a weight ratio of 2:1 by using a hot melt adhesive to obtain a radiation-proof layer (2);

(5) uniformly covering the nanometer hollow glass beads on the surface of the base cloth layer (4) obtained in the step (2) by using hot melt adhesive to obtain a heat insulation layer (3);

(6) and (3) compounding the prepared reflective layer (1), the prepared radiation-proof layer (2), the prepared heat-insulating layer (3) and the prepared base cloth layer (4) among the layers in sequence from top to bottom by adopting a film pressing compounding or hot melting bonding mode to obtain the cloth.

9. The method for preparing a thermal insulation cloth according to claim 8, wherein: the covering thickness of the nano silver and nano titanium dioxide compound in the step (4) is 100-350 nm.

10. The method for preparing a thermal insulation cloth according to claim 8, wherein: the covering thickness of the nano hollow glass microspheres in the step (5) is 200-750 nm.

Technical Field

The invention belongs to the technical field of cloth processing, and particularly relates to a heat insulation cloth and a preparation method thereof.

Background

Cloth is a decorative material or a common material for preparing certain products, including heat-insulating clothes, carpets, curtains, sunshades, sun-shading cloth and the like, and nowadays, many people also adopt cloth to decorate or insulate the wall surface. With the improvement of requirements of human beings on healthy life and work, more and more household and industrial heat insulation cloth products are increased, and the application of the heat insulation cloth is more and more extensive. The heat insulation cloth is a functional cloth, and other functions are given while the cloth is used, so that the heat insulation cloth has the softness of the cloth and the heat insulation effect.

Chinese patent CN 107263951 a discloses a heat insulation cloth and a preparation method thereof, the heat insulation cloth comprises a heat insulation layer, a first heat insulation layer and a second heat insulation layer, a waterproof layer wrapped by a nano coating is coated on the top of the heat insulation layer, the heat insulation layer is formed by weaving metal wires, hemp threads, sheep wool threads and cotton threads, the metal wires comprise a first metal sewing thread and a second metal sewing thread, and the outer surfaces of the first metal sewing thread and the second metal sewing thread are made of heat insulation powder materials, so that the heat insulation function is realized. However, the cloth made of metal wires has poor flexibility and expensive metal price, and the heat insulation powder coated on the surface of the metal wires can be adhered loosely and fall off gradually, so that the heat insulation function of the cloth is gradually lost, and the preparation method is complex.

Disclosure of Invention

The purpose of the invention is as follows: in order to overcome the defects, the invention aims to provide the cloth with good heat insulation effect, the heat insulation cloth has good heat insulation effect, is suitable for manufacturing products needing sunlight resistance for heat insulation, such as light blocking cloth, sunshade umbrella, sunshade cloth and the like, and is simple in preparation method, sufficient in raw material source and suitable for industrial large-scale application.

The technical scheme is as follows: a heat insulation cloth sequentially comprises a reflecting layer, a radiation protection layer, a heat insulation layer and a base cloth layer from top to bottom. The reflecting layer can reflect partial sunlight, the radiation-proof layer can prevent ultraviolet rays in the sunlight from permeating, and the heat-insulating layer plays a role in blocking heat of the sunlight.

Furthermore, the reflecting layer is coated with a reflecting paint layer. The reflective coating makes the cloth have the function of reflecting light.

Further, the reflective coating is composed of a mixture of the following weight formula: 5-10 parts of reflective powder, 20-40 parts of acrylic resin, 1-5 parts of waterborne epoxy resin, 1-5 parts of dimethyl silicone oil, 1-5 parts of sodium hydroxyethyl cellulose and 30-70 parts of absolute alcohol. The reflective powder can be used on various surfaces with complex shapes and has strong light reflectivity.

Further, the radiation-proof layer is a composite layer of nano silver and nano titanium dioxide, and the weight ratio of the nano silver to the nano titanium dioxide in the composite layer is 2: 1. The nano silver has the advantages of radiation protection, static electricity prevention, strong antibiosis, safety to human bodies and the like, and the nano titanium dioxide has strong shielding effect on ultraviolet rays and better radiation resistance.

Furthermore, the particle size of the nano silver is 10-25nm, and the particle size of the nano titanium dioxide is 50-100 nm. The nano silver particles have good antibacterial effect in small particle size, and the nano titanium dioxide has high activity in smaller particle size, can reflect and scatter ultraviolet rays and absorb ultraviolet rays, so that the nano silver particles have high ultraviolet blocking capability and good anti-radiation effect.

Further, the heat insulation layer comprises a nano hollow glass bead layer, and the particle size of the nano hollow glass bead is 100-250 nm. The hollow glass beads have the characteristics of light weight, large volume, low heat conductivity coefficient, good dispersibility, good fluidity, high chemical stability and the like, are sufficient in source and low in price, can reflect light, and can play a good heat insulation effect when being used as a heat insulation filler.

Further, the base cloth layer comprises 15 parts of terylene, 35 parts of artificial fiber and 40 parts of cotton fiber. The terylene, namely polyester fiber, has better crease resistance and shape retention, higher strength and elastic recovery capability; the artificial fiber has sufficient source, low price and excellent performance; the fabric made of cotton fiber is firm and wear-resistant.

A preparation method of a heat insulation cloth comprises the following steps:

(1) placing 20-40 parts of acrylic resin, 1-5 parts of waterborne epoxy resin, 1-5 parts of dimethyl silicone oil, 1-5 parts of sodium hydroxyethyl cellulose and 30-70 parts of absolute alcohol in a stirrer for mixing, gradually adding 5-10 parts of reflective powder after uniform stirring, and stirring for 0.5-1h at the temperature of 40-50 ℃ to obtain uniform mixed liquid, namely the reflective coating;

(2) weaving 15 parts of terylene, 35 parts of artificial fiber and 40 parts of cotton fiber by a weaving machine to obtain a base fabric layer;

(3) uniformly coating the surface of the base cloth layer obtained in the step (2) with the reflective coating obtained in the step (1), repeatedly coating for three times, and then drying in a 50 ℃ oven for 24 hours to obtain a reflective layer;

(4) uniformly covering the surface of the base cloth layer obtained in the step (2) with a nano silver and nano titanium dioxide compound in a weight ratio of 2:1 by using a hot melt adhesive to obtain an anti-radiation layer;

(5) uniformly covering the nanometer hollow glass beads on the surface of the base cloth layer obtained in the step (2) by using hot melt adhesive to obtain a heat insulation layer;

(6) and compounding the prepared reflective layer, the prepared radiation-proof layer, the prepared heat-insulating layer and the prepared base cloth layer among the layers in sequence from top to bottom by adopting a film pressing compounding or hot melting bonding mode to obtain the cloth.

Further, the covering thickness of the nano silver and nano titanium dioxide composite in the step (4) is 100-350 nm. If the covering thickness is too thick, the flexibility of the product is affected, and if the covering thickness is too thin, the radiation protection effect is not good.

Further, the covering thickness of the hollow glass microspheres in the step (5) is 200-400 nm. Too thick a covering thickness affects the flexibility of the product, and too thin a covering thickness makes the heat insulation effect poor.

The technical scheme shows that the invention has the following beneficial effects: the surface layer of the heat insulation cloth is provided with the reflective layer, and the reflective coating of the reflective layer can reflect a part of sunlight; the radiation-proof layer is arranged below the reflecting layer and can prevent ultraviolet rays from penetrating; the heat insulation layer filled with the hollow glass is arranged below the radiation protection layer, so that partial sunlight can be further reflected, the penetration of solar heat can be reduced, and the radiation protection layer has a good heat insulation effect. The heat insulation cloth has a good heat insulation effect, is suitable for manufacturing products needing to resist sunlight for heat insulation, such as light blocking cloth, sunshade umbrella, sunshade cloth and the like, has a simple preparation method and sufficient raw material sources, and is suitable for industrial large-scale application.

Drawings

Fig. 1 is a schematic structural view of a thermal insulation cloth according to the present invention.

In the figure: 1 reflecting layer, 2 radiation protection layers, 3 thermal insulation layers and 4 base cloth layers.

Detailed Description

The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings.

As shown in fig. 1, the heat insulation cloth sequentially comprises a reflective layer 1, a radiation protection layer 2, a heat insulation layer 3 and a base cloth layer 4 from top to bottom, wherein the reflective layer 1 is coated with a reflective coating layer, and the reflective coating is composed of a mixture of the following weight formula: 5-10 parts of reflective powder, 20-40 parts of acrylic resin, 1-5 parts of waterborne epoxy resin, 1-5 parts of dimethyl silicone oil, 1-5 parts of sodium hydroxyethyl cellulose and 30-70 parts of anhydrous alcohol; the radiation-proof layer 2 is a composite layer of nano silver and nano titanium dioxide, the weight ratio of the nano silver to the nano titanium dioxide in the composite layer is 2:1, the particle size of the nano silver is 10-25nm, and the particle size of the nano titanium dioxide is 50-100 nm; the heat insulation layer 3 comprises a nano hollow glass bead layer, and the particle size of the nano hollow glass bead is 100-250 nm; the base cloth layer 4 comprises 15 parts of terylene, 35 parts of artificial fiber and 40 parts of cotton fiber.