Antifouling scale-inhibiting anti-aging exterior wall coating and preparation method thereof

Abstract

The invention provides an exterior wall coating which is composed of the following raw materials in parts by weight: 84-90 parts of water-based acrylic emulsion, 10-15 parts of styrene-acrylic emulsion, 16-50 parts of hydrotalcite powder, 4-6 parts of nano silicon dioxide, 0.1-0.2 part of triallyl isocyanurate, 3-4 parts of acrylic acid, 1-2 parts of aluminium nitride, 1-2 parts of dimethylethanolamine, 0.7-1 part of ureidopropyltriethoxysilane, 1-2 parts of sodium tripolyphosphate, 1-2 parts of polyvinylpyrrolidone, 1-2 parts of para toluene sulfonamide, 1-2 parts of ammonium dihydrogen phosphate, 0.4-0.6 part of triphenyl phosphite, 2-3 parts of absolute ethyl alcohol, 3-5 parts of coalescing agent, 0.1-0.2 part of polyoxypropylene glycerol ether and 10-20 parts of deionized water. The coating provided by the invention has the advantages of low raw material loss, low gel production, simple process, hard coating film, good glossiness, strong impact resistance, low cracking rate, soft texture, excellent decorative property, high weather resistance, scrubbing resistance, high adhesion force and long service life; and the coating is free of special smell and contains no heavy metals such as mercury and lead and also does not contain formaldehyde volatile, and thus the coating meets the technical requirements of an environment-friendly coating.

Description

technical field [0001] The invention mainly relates to a coating, in particular to an anti-fouling, anti-scaling and anti-aging exterior wall coating 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...

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