Moisture-resistant reflective thermal insulation coating and preparation method thereof

Abstract

The invention discloses a moisture-resistant reflective thermal insulation coating and a preparation method thereof. The moisture-resistant reflective thermal insulation coating is prepared from the following raw materials by weight: 40-60 parts of pure acrylic emulsion, 4-8 parts of hollow microsphere powder, 3-6 parts of silica aerogel powder, 2.5-4.5 parts of porous calcium phosphate, 5-10 parts of titanium dioxide, 1-2 parts of 4-chloro-N-(stearamide methyl)pyridine, 4.5-6.5 parts of compound nano powder, 3-5 parts of polytetrafluoroethylene ultrafine powder, 2-3 parts of sodium methyl silicate, 1-2 parts of potassium perfluorooctane sulfonate, 0.05-0.1 part of 2-methyl-4-isothiazolin-3-one, 0.4-0.8 part of a dispersant HT-5020, 0.3-0.6 part of a defoaming agent T-607, 0.1-0.3 part of a moistening agent X-405, 2.5-3 parts of a film-forming assistant K-12, 0.6-1.2 parts of a thickening agent YK-AR-2 and 0.5-1 part of a leveling agent B333. The reflective thermal insulation coating has excellent moisture-resistant and waterproof performances, can inhibit water vapor condensation, can prevent oxidation of a thermal insulator surface, can keep very good thermal insulation performances in a humid environment for a long time, has good properties of high temperature resistance, weather resistance, ultraviolet radiation aging resistance, acid and alkali resistance, bacteria resistance and mildew resistance, and is a coating that can reduce temperature and save energy at a normal temperature, is environment-friendly and has a long service life.

Description

technical field [0001] The invention relates to a moisture-proof reflective heat-insulating coating and a preparation method thereof, belonging to the technical field of architectural coatings. Background technique [0002] Reflective heat-insulating coatings are composed of base materials, heat-reflecting pigments, fillers and additives. Thermal insulation is achieved by efficiently reflecting sunlight. Thin-layer heat-insulating reflective coatings are representative of this type of coatings. The heat-insulating reflective coating can reduce the surface temperature of the object by more than 20°C when the sun is strong, and the temperature can be lowered by more than 3°C or lowered to the same temperature as the atmosphere on cloudy days and nights. Reflective heat-insulating coatings currently on the market have the disadvantages of poor moisture-proof and waterproof performance. When exposed to a humid environment, their heat-insulating performance decreases, which aff...

AI Technical Summary

Problems solved by technology

Reflective heat insulation coatings currently on the market have the disadvantages of poor moisture-proof and waterproof performance. When exposed to humid environments, their heat-insulation performance decreases, which affects their performance.