A thermal insulation exterior wall coating

Abstract

The invention provides a heat-insulating and heat-insulating exterior wall paint suitable for hot areas, which relates to the technical field of paints, including heat-insulating paint and heat-insulating paint; the heat-insulating paint is composed of component A and component B in a weight ratio of 50:1-5, and the Said component A includes the following components in parts by weight: pure acrylic elastic emulsion, flexible acrylic emulsion, water-based epoxy resin emulsion, redispersible latex powder, wollastonite powder, modified nano-ceramic hollow microspheres, polyacrylic acid hollow Balls, water ballast powder, 2-hydroxyethyl cellulose, adhesion promoter, water, the second component is the curing agent DX-50A; the heat-insulating coating includes the following components in parts by weight: fluorine-containing acrylate polymer Material emulsion, nano-titanium dioxide, fumed silica, zinc oxide, butyl glycol ether, polyvinyl alcohol, water, heat insulation on the outer layer and heat preservation on the inner layer, so as to achieve the purpose of heat insulation and heat preservation to reduce indoor cooling energy consumption in hot areas.

Description

technical field [0001] The invention relates to the technical field of coatings, in particular to a thermal insulation exterior wall coating suitable for hot areas. Background technique [0002] In 2017, the National Climate Center of the China Meteorological Administration released the list. By comprehensively analyzing the meteorological data of China's provincial capital cities and municipalities directly under the Central Government, it announced to the public for the first time the situation of hot summer cities in China. The provincial capital cities or municipalities directly under the Central Government are: Chongqing, Fuzhou, Hangzhou, Nanchang, Changsha, Wuhan, Xi'an, Nanjing, Hefei, and Nanning. The specific performance is that the daily maximum temperature is ≥35℃, which is generally concentrated in the Yangtze River Basin in southern China and the Huanghuai area in North China. [0003] In these cities, air conditioners have become indispensable household appli...

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Problems solved by technology

[0004] The Chinese patent with the application number 201510355482.7 discloses a thermal insulation coating and its preparation method and thermal insulation coating. The thermal insulation coating includes the following components in parts by mass: 15-30 parts of main ingredients, 3-22 parts of acrylic polymer hollow Balls, 15-40 parts of water and 0.5-1.5 parts of thickener, wherein the main material is a polymer resin with an elastic elongation of more than 800% and a glass transition temperature below -10°C, and it is pointed out that the acrylic acid Polymer hollow spheres can use the above-mentioned thermal insulation coating to prepare the thermal insulation coating with a porous structure, thereby forming a steric hindrance in the thermal insulation coating. The steric hindrance will block heat conduction and reduce heat loss, but the above scheme has certain limitations. The defect of acrylic polymer hollow spheres is 20-50 microns, and the pores between the hollow spheres are large. When the sun shines directly, the heat brought by the high temperature outside is easy to conduct from the pores between the acrylic polymer hollow spheres. Indoor, resulting in a decline in thermal insulation effect

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