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Radiation cooling coating as well as preparation method and application thereof

A technology of coatings and reflective materials, applied in the direction of reflection/signal coatings, anti-fouling/underwater coatings, coatings, etc., can solve the problems of inability to maintain radiation cooling for a long time, achieve low cost, broad application prospects, and simple process effects

Active Publication Date: 2019-07-09
杭州瑞酷新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there is no film-forming substance on the surface of the coating, and dust can easily penetrate into the microsphere coating, which cannot maintain the radiation cooling effect for a long time

Method used

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  • Radiation cooling coating as well as preparation method and application thereof
  • Radiation cooling coating as well as preparation method and application thereof
  • Radiation cooling coating as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Add 95 parts of absolute ethanol, 5 parts of deionized water, and 15 parts of polyvinyl butyral (Qingdao Haocheng Industry, SD-5) into the high-speed disperser, and stir for 120 minutes at a linear speed of 5 m / s to obtain a slurry material. Then add 20 parts of sodium zinc phosphate (1-3 μm), 30 parts of silicon dioxide (1-3 μm), 2 parts of trimethoxysilane dispersant, 1 part of dimethyl silicone oil defoamer, 1 part of inorganic silver-based antimicrobial agent (Beijing Eisel Technology Co., Ltd., MK-T-111), dispersed for 30 minutes, and filtered through a 100-mesh sieve to obtain the radiation cooling coating of the present invention.

Embodiment 2

[0034] Add 60 parts of cyclohexane, 30 parts of isopropanol, 10 parts of deionized water, and 20 parts of ethylene-vinyl acetate copolymer (Yangzi BASF, V5110J) into the high-speed disperser, and stir at a linear speed of 8 m / s After 20 minutes, the slurry was obtained. Then add 30 parts of zirconia (1~3μm), 10 parts of silicon dioxide (1~3μm), 2 parts of trimethoxysilane dispersant, 2 parts of dimethyl silicone oil defoamer at a speed of 5m / s, and disperse After 15 minutes, filter through an 80-mesh sieve to obtain the radiation cooling coating of the present invention.

Embodiment 3

[0036] Add 95 parts of butanone, 5 parts of ethylene glycol, and 20 parts of polyvinyl acetate (Xiamen Chonghuayuan, PVAc-H) into the high-speed disperser, and stir for 60 minutes at a linear speed of 10 m / s to obtain a slurry. Then add 10 parts of sodium aluminum silicate (1-3 μm), 50 parts of aluminum oxide (1-3 μm), 3 parts of trimethoxysilane dispersant, and 2 parts of dimethyl silicone oil defoamer at a speed of 20 m / s. Disperse for 45 minutes and filter through an 80-mesh sieve to obtain the radiation cooling coating of the present invention.

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Abstract

The invention discloses a radiation cooling coating as well as a preparation method and application thereof. The method comprises the following steps: adding 15-30 parts by weight of polymer film-forming resin, 30-60 parts by weight of an ultraviolet reflective material and 1-5 parts by weight of an auxiliary agent into 60-100 parts by weight of a mixed solvent, performing dispersion uniform mixing, and performing filtration by using a filter screen to obtain the radiation cooling coating. The radiation cooling coating coats a substrate according to a thickness of 200-1500 [mu]m, the coating layer formed after drying contains micropores with a volume fraction of 0.05-0.5, the micropores and the ultraviolet reflective material synergistically generate solar reflectance of 0.92-0.96, so thatthe coating has a radiation cooling function. The radiation cooling coating provided by the invention has a simple process and low costs, is suitable for different shapes and planes, and suitable forplaces such as residential buildings, commercial buildings and industrial plants, and has broad application prospects.

Description

technical field [0001] The invention belongs to the technical field of energy-saving coatings, in particular to a radiation cooling coating and its preparation method and application. Background technique [0002] Radiation cooling materials achieve a cooling effect lower than atmospheric temperature under solar irradiation, and can replace air conditioning, spraying, etc. under certain conditions, with remarkable energy-saving effects and great application value. However, the existing radiation cooling materials often contain metal coating materials, the process is complex, the price is expensive, and it is only suitable for flat surfaces. [0003] Invention patent 201810238449.X (publication number CN 108250873A) discloses an outdoor all-weather solar reflection and infrared radiation cooling coating, by adding micron-scale spherical microbeads, micron-scale metal-plated flakes, and / or micron-scale plated Metal spheres are used in the coating system, through the method of...

Claims

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Application Information

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IPC IPC(8): C09D129/14C09D131/04C09D123/08C09D133/04C09D5/33C09D5/14C09D7/61C09D7/65
CPCC08K2003/2227C08K2003/2244C08K2003/265C08K2003/3045C09D5/004C09D5/14C09D123/0853C09D129/14C09D131/04C09D133/04C09D7/61C09D7/65C08L83/04C08K3/32C08K3/36C08K3/22C08K3/34C08K3/30C08K3/26C08K3/346F28F13/185
Inventor 盛艳
Owner 杭州瑞酷新材料有限公司
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