Waterborne energy-saving building coating and preparation method thereof

Abstract

The invention specifically relates to a multifunctional green environment-friendly waterborne energy-saving building coating and a preparation method thereof, belonging to the technical field of energy-saving building coatings. The multifunctional high-efficiency energy-saving building coating comprises, by weight, 25 to 50% of a high polymer emulsion, 5 to 30% of a light-reflection filling material, 1 to 5% of aerogel powder, 5 to 10% of a heat-insulation filling material, 5 to 15% of a common filling material, 1 to 2% of a surface modifier, 1 to 5% of a dispersing agent, 0.1 to 4% of a film-forming aid, 0.1 to 2% of a thickening agent, 0 to 1% of an antifoaming agent, 0.01 to 0.5% of a pH regulating agent, 0.1 to 2% of a wetting agent and 0.5 to 2% of an antifreezing agent, with the balance being deionized water. The coating provided by the invention has heat-insulation and cooling effect in summer and heat preservation effect in winter, is applicable to energy-saving reconstruction of buildings in tropical zones and subtropical zones, and has the characteristics of safety, no toxicity, environment friendliness and no pollution; moreover, the coating has good weatherability, contamination resistance, flexibility and scrubbing resistance.

Description

technical field [0001] The invention relates to a building energy-saving material, in particular to a multifunctional green and environment-friendly water-based building energy-saving coating and a preparation method thereof. Background technique [0002] The energy issue is a major problem facing the world today and also a hot topic of concern. In recent years, building energy consumption has been ranked alongside industrial energy consumption and transportation energy consumption, and has become a "big household" of energy consumption in the world. 43 billion m in our country 2 Among the existing buildings in China, high-energy buildings account for more than 99%, while in the past, about 2 billion m 2 Among the new houses, more than 95% are still high-energy buildings, and the energy consumption per unit area is 2-3 times that of countries with similar climate conditions in the world. In recent years, with the continuous improvement of people's requirements for living c...

AI Technical Summary

Problems solved by technology

Chinese patent 201410336222.0 provides a method for preparing infrared energy-saving coatings, using alumina micropowder, ferromanganese spinel powder, iron chromium spinel powder, vanadium pentoxide and other raw materials as functional fillers to prepare coatings with high infrared radiation capabilities. The full-wavelength integrated emissivity reaches 0.95 at room temperature. The common disadvantage of the above three reflective coatings is that they only have infrared light reflection and radiation capabilities, but do not have the effect of blocking heat conduction, and the scope of application is narrow.

[0006] Chinese patent 201210401689.X discloses a reflective and heat-insulating nano-coating, which includes water-based emulsion, titanium dioxide, mica powder, diatomaceous earth, ultrafine calcium carbonate, hollow microspheres, etc. The paint claims to have dual effects of reflection and heat insulation. However, no specific reflectance and thermal conductivity data are given

Images