Water-based exterior wall putty powder

Abstract

The invention relates to a water-based exterior wall putty powder which comprises the following components by weight percent: 20-35% of cement, 20-25% of silicone acrylic emulsion, 20-25% of talcum powder, 15-20% of powdered calcium carbonate, 0.2-0.4% of methyl cellulose, 0.5-1% of ethylene glycol and 0.3-0.5% of polycarboxylic acid ammonium salt, wherein the calcium carbonate has the particle size diameter of 0.05-0.2mm, and the weight percent of methyl cellulose is 0.3%. The water-based exterior wall putty powder adopts the silicone acrylic emulsion with high permeability and good water resistance, so that the water resistance, the adhesive force and the crack resistance of putty can be improved; therefore, the phenomena of whiskering, discoloration and dropping of an exterior wall can be prevented, a cement wall body and a concrete wall surface are prevented from cracking, the service life of a building is prolonged, and the whole attractiveness of the building can be better improved.

Description

technical field [0001] The invention relates to a putty powder for coating exterior walls, in particular to a water-based putty powder. Background technique [0002] Paint is usually applied on the base surface of the building wall. The purpose of applying exterior wall paint is to cover up the defects of the base surface of the wall, and to protect the wall to a certain extent, to protect the steel from corrosion, and to protect the concrete from calcification and chlorine. change. But because there are various defects in the base surface of the building wall, it is necessary to smear one deck of putty before painting. However, existing exterior wall paints generally have phenomena such as cracking, discoloration, staining, and shedding during use. The reason is that some of the currently used exterior wall putty are loose and not firm, easy to fall off, and some have no elasticity. , not water-resistant, it is easy to crack and discolor the exterior wall paint, w...

AI Technical Summary

Problems solved by technology

However, existing exterior wall paints generally have phenomena such as cracking, discoloration, staining, and shedding during use. The reason is that some of the currently used exterior wall putty are loose and not firm, easy to fall off, and some have no elasticity. , not resistant to water, it is easy to crack and discolor the exterior wall paint, which reduces the service life of the building and affects the appearance of the building