Environment-friendly exterior wall paint and preparation method thereof

Abstract

The invention discloses an exterior wall paint prepared from the following raw materials in parts by weight: 86-90 parts of waterborne acrylic emulsion, 17-20 parts of styrene-acrylic emulsion, 20-50 parts of wollastonite powder, 2-3 parts of iso-octyl acrylate, 1-2 parts of potassium borate, 0.4-1 part of ethylene glycol dimethacrylate, 3-4 parts of tungsten boride, 1-2 parts of sodium dodecyl sulfate, 0.6-1 part of dibenzoyl peroxide, 3-4 parts of absolute ethyl alcohol, 0.8-1 part of gamma-aminopropyltriethoxysilane, 0.1-0.2 part of polyoxyethylene polyoxypropylene ether, 3-5 parts of coalescing agent and 10-20 parts of deionized water. The paint produced by the invention is low in raw material loss, less in gel generation, simple in process, firm in paint film, good in glossiness, strong in impact force resistance, not easy to crack, soft in texture, strong in decoration, high in weather and scrubbing resistance, strong in adhesive force, long in service life, free of special smell, heavy metals such as mercury, lead and the like and formaldehyde volatiles, and capable of meeting the technical requirement of an environment-friendly paint; and the added coalescing agent has very high stability, efficient adhesiveness and film forming property, so that the density of the paint film is increased, the film forming quality is improved, and a film layer has the advantages of strong adhesive force, no hole and rift, densification, uniformity and the like.

Description

technical field [0001] The invention mainly relates to a paint, in particular to an environment-friendly exterior wall paint and a preparation method thereof. Background technique [0002] In recent years, with the improvement of people's living standards and the continuous development of society, people have paid more and more attention to the choice of architectural decorative coatings. The simpler the construction requirements for coatings, the better. Especially for exterior wall coatings, it has not only stayed The most basic protection of the substrate puts forward higher requirements for the decorative effect of the coating. The exterior wall coating requires water resistance and self-cleaning properties. The paint film must be hard and smooth, and the dirt will fall off as soon as it is washed. . [0003] However, the acrylic paints currently on the domestic market have disadvantages such as low gloss, poor adhesion, poor cold resistance, intolerant to water, wa...

AI Technical Summary

Problems solved by technology

[0003] However, the acrylic paints currently on the domestic market have disadvantages such as low gloss, poor adhesion, poor cold resistance, intolerant to water, water vapor, acid and alkali, salt solutions and organic polar solvents, poor elasticity at room temperature, and poor wear resistance. High temperature is easy to stick back, low temperature is easy to be brittle, resulting in easy cracking and peeling of the paint, and rainwater is easy to penetrate into the wall and corrode the wall, which not only affects the decoration of the building, but also reduces the service life of the building