A kind of thermal insulation coating for building exterior wall

Abstract

The invention relates to the field of building materials, and provides a heat-preservation coating with good stability and high mechanical strength. The heat-preservation coating is prepared from the following components in parts by mass: 20 to 30 parts of water, 25 to 30 parts of acrylic emulsion, 2 to 10 parts of diatomite, 35 to 45 parts of calcium powder, 0.5 part of sodium alginate, 0.5 to 1 part of wetting agent, 0.1 part of dispersant and 0.1 to 0.3 part of antifoaming agent, wherein the diatomite and the calcium powder are powder with the same electric charges; the sodium alginate is powder with another electric charge; the diatomite, the calcium powder and the sodium alginate are added into an agitation device to carry out agitation; afterwards, the acrylic emulsion and the water which are mixed uniformly are added into the agitation device to carry out mixing; the antifoaming agent is added into the agitation device in a mixing process, and an obtained mixture is mixed, so that the coating is made.

Description

technical field [0001] The invention relates to the field of building materials, in particular to a coating for building exterior walls. Background technique [0002] Thermal insulation coating is a new type of thermal insulation material, which has the characteristics of low thermal conductivity and high thermal resistance, so it can achieve the effect of thermal insulation. Thermal insulation coatings are usually made of high-quality natural minerals with chemical additives and high-temperature adhesives, and are manufactured through pulping, molding, shaping, drying, finished products, and packaging. [0003] External wall thermal insulation coatings are mainly divided into two categories, one is thick external thermal insulation system, which uses the principle of reducing heat transfer, such as rubber powder polystyrene particle insulation, inorganic vitrified microbead insulation, etc., the effect is obvious, and the other is Thin-layer coatings use the principle of r...

AI Technical Summary

Problems solved by technology

[0004] At present, most of the thermal insulation coatings on the market use expanded perlite, vermiculite, asbestos, etc. as thermal insulation fillers. Their common disadvantages are poor stability and low mechanical strength.

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