Exterior wall coating and preparation method thereof

Abstract

The invention discloses a multifunctional exterior wall coating with strong weather resistance, brushing resistance and high adhesion and a preparation method thereof. The exterior wall coating is prepared from the following raw materials in percentage by weight: 10-30% of silicone acrylic emulsion with a interpenetrating network structure, 10-40% of acrylic ester emulsion, 1-15% of hydrophobically modified inorganic nanoparticles, 10-40% of pigment and filler, 0.3-1% of a dispersing agent, 0.1-0.2% of a defoaming agent, 0.1-0.3% of a preservative, 0.3-0.6% of a flatting agent, 1-2% of a thickening agent, and the balance deionized water. The exterior wall coating of the invention has the advantages of strong weather resistance, brushing resistance, strong adhesion, long service life, simple and convenient preparation process and low equipment requirement, thus being easy for large-scale popularization and application. The exterior wall coating overcomes the defects of poor brushing resistance, poor ageing resistance and the like of the existing exterior wall coating.

Description

technical field [0001] The invention relates to the field of building materials, in particular to an exterior wall paint and a preparation method thereof. Background technique [0002] In recent years, water-based, environmentally friendly, multi-functional and high-performance have become the development trend of architectural exterior wall coatings. With the improvement of people's living standards, the waterproof, anti-mildew, insect-proof and other functions of exterior wall coatings are gradually understood and accepted by the public, thus putting forward higher requirements for the decorative effect of coatings. [0003] At present, the exterior wall paints used in my country are mainly based on acrylic emulsion. Water-based acrylic coatings have the advantages of moderate cost, excellent weather resistance, good adjustability, and no release of organic solvents. They are a type of coating product that has developed rapidly in recent years. However, the acrylic paint...

AI Technical Summary

Problems solved by technology

However, the acrylic paints currently on the domestic market have disadvantages such as low gloss, poor adhesion, and not washable, and are easy to stick back at high temperatures and brittle at low temperatures, resulting in easy cracking and peeling of the paint, and rainwater is easy to penetrate into the wall and corrode the wall. body

This not only affects the decorative appearance of the building, but also reduces the service life of the building

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