Washing resistive exterior wall coating and preparation method thereof

Abstract

The invention relates to an exterior wall coating which comprises the following raw materials in parts by weight: 80-90 parts of a water based acrylic emulsion, 15-20 parts of a styrene-acrylic emulsion, 30-60 parts of nano bentonite, 3-4 parts of sodium carboxymethylcellulose, 2-3 parts of butyl methacrylate, 1-2 parts of dimethyl dimercaptoacetic tin isooctylate, 0.6-1 part of phenethyl phenol polyoxyethylene ether, 0.5-1 part of glass fiber, 0.8-1 part of 1, 2-di(triethoxy silicon base) ethane, 0.1-0.2 part of tributyl phosphate, 3-5 parts of a coalescing agent and 10-20 parts of deionized water. The produced coating disclosed by the invention is less in raw material loss, less in gel generation, simple in process, hard in film, good in luster, strong in impact resistance, difficult to crack, flexible in texture, strong in decoration, high in weather resistance and washing resistance, strong in adhesive force, long in service life, and free from special smell, heavy metals such as mercury and lead, and formaldehyde volatiles, so that the coating is in accordance with technical demand of environmental-friendly coatings. The coalescing agent is added, so that the coating is very high in stability, and efficient in adhesiveness and film-forming property. The compactness of the coating film is increased, and the film-forming quality is improved, so that a film has the advantages of strong adhesive force, no holes and rifts, uniform compactness and the like.

Description

technical field [0001] The invention mainly relates to a paint, in particular to a scrub-resistant 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, water va...

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