Exposed wall elastic anti-crack putty

Abstract

This invention is related to a kind of elastic crack-resistant putty exterior walls composed by mixing base of 20-30% part, filler of 60-70% part and assistant of 8-20% part by weight. The said base contains flexible acrylic acid emulsion of 12-25% part and EVA emulsion of 5-10% part by weight. The said filler contains heavy calcium of 25-30% part, 25-30% cement and silica flour of 10-20 part by weight. The said assistant contains the following componentsby weight: dioctyl phthalate of 1-3% part, defoaming agent of 1-1.5% part, thickening agent of 2-5% part, emulsive filmogen of 3-5% part, hydroxypropyl methylcellulose of 2.5-3.0% part, woody fiber of 2-5% part, polypropylene fiber of 3-5% part, and mildew preventive of 0.5-1% part. The said putty can be used as the exterior wall coatings of both regular buildings and buildings with higher crack-resistant requirements and its dynamic crack property exceeds the national standard. The said putty can adjust the viscosity of the paste and other workabilities according to different operating requirements by selecting the variety and thickness scale of the filler, adjusting the matched ratios, and also adding proper quantities of water and assistants which satisfy different constructing requirements.

Description

technical field [0001] The invention relates to a putty, in particular to an exterior wall putty, in particular to an exterior wall elastic anti-crack putty. Background technique [0002] A large number of buildings have to do cement mortar plastering layer. Due to the unavoidable hydration and shrinkage of cementitious materials, it will cause cracks in the plaster layer, which will lead to cracks in the decorative coating made by it, which generally directly affects the decorative effect and the life of the coating. Especially if the exterior wall is serious, it will cause rainwater leakage, which is an extremely troublesome problem in the construction industry. In order to solve the above problems, a large amount of paper lime lime mixed with cement mortar has been used in the past for a long time to make the plastering surface layer, but due to the material difference between it and the cement concrete base, the adhesion is not good, and it is prone to hollowing and pee...

AI Technical Summary

Problems solved by technology

[0003] The object of the present invention is to provide a kind of elastic anti-crack putty for outer wall which has good dynamic crack resistance and is easy to scrape and coat. many deficiencies