External wall elastic waterproof coating with modified soybean protein isolate capable of enhancing adhesion force

Abstract

The invention discloses an external wall elastic waterproof coating with a modified soybean protein isolate capable of enhancing adhesion force. The external wall elastic waterproof coating with the modified soybean protein isolate capable of enhancing the adhesion force is prepared from the following raw materials in parts by weight: 20 to 22 parts of methyl methacrylate, 29 to 31 parts of butyl acrylate, 8.5 to 9.5 parts of hexafluorobutyl acrylate, 4 to 5 parts of vinyltriethoxysilane, 0.1 to 0.12 part of ammonium persulphate, 2 to 3 parts of OP-10, a suitable amount of deionized water, a suitable amount of ammonia water, 1.5 to 2 parts of 2,2,4-trimethyl-1,3-pentanediol monoisobutyrate, 9 to 10 parts of rutile titanium dioxide, 0.8 to 1 part of dimethyl silicone oil, 7 to 8 parts of soybean protein isolate powder, 1 to 1.2 parts of sodium hydroxide, a suitable amount of 0.1 mol / L hydrochloric acid solution, and 1 to 1.2 parts of ammonium polyacrylate. The prepared coating is used for protection of an external wall of a building, and is water-proof, stain-resistant and high in adhesion force; the adhesion force of the coating on the external wall is good, the coating does not fall off and crack easily, and is attractive and elegant, environmentally friendly, non-toxic and long in service life.

Description

technical field [0001] The invention relates to the technical field of coatings, in particular to an elastic waterproof coating for exterior walls with enhanced adhesion by modified soybean protein isolate. Background technique [0002] At present, an important development direction of building exterior wall coatings is energy-saving and thermal insulation. The performance of the emulsion used for the facing layer has a direct impact on the water resistance, stain resistance, durability and temperature resistance of the external wall thermal insulation system, and the wall Body cracks will cause rainwater and carbon dioxide gas intrusion, cause steel bar corrosion, and accelerate wall carbonization speed. Building wall cracks have become one of the common problems that affect the quality of construction projects. Due to the good extensibility of the coating, elastic architectural coatings can resist and cover the cracks in the base layer to a certain extent, and are favored ...

AI Technical Summary

Problems solved by technology

Conventional coatings cannot not only have excellent weather resistance, water resistance and stain resistance, but also have good elasticity, flexibility and crack resistance, so the development of a new type of high-performance elastic waterproof coating has become a research topic for exterior walls. An important subject of the thermal insulation system project