Formula of anti-cracking putty powder

Abstract

The invention discloses a formula of anti-cracking putty powder. The putty powder is prepared from the following raw materials in parts by weight: 70-90 parts of calcium carbonate heavy, 10-13 parts of composite glass powder, 3-9 parts of modified bentonite, 8-11 parts of inorganic cryogel powder, 2-7 parts of composite cellulose, 30-45 parts of ash calcium, 22-27 parts of coarse whiting and 23-26parts of white cement. Calcium, magnesium, aluminum, zinc and other metal ions in the inorganic cryogel powder are subjected to a composite reaction with silicate in the waste recycled glass powder and silicon dioxide, aluminum oxide, calcium oxide, manganese dioxide, magnesium oxide and other substances in the modified bentonite in water to generate pasty putty powder with the PH value of 7-8 and good water resistance, the bonding strength is improved, and the crack resistance is high; the pasty putty powder is good in water resistance, resistant to yellowing for a long time, resistant to mildew, fine, smooth, bright in color, good in sagging resistance, free of stagnation on a wall and smooth in scraping, is purely neutral, non-toxic and free of pungent smell, does not release any substance harmful to a human body, and belongs to environment-friendly putty powder in the true sense.

Description

technical field [0001] The invention relates to the field of putty powder used in building materials, in particular to the formula of anti-cracking putty powder. Background technique [0002] Putty powder is a kind of building decoration material. It is a kind of base material used for wall repair and leveling, which lays a good foundation for the next step of decoration (painting and wallpaper). Putty is divided into two kinds: putty inside wall and putty on exterior wall. External wall putty can resist wind and sun, so it has good gelation and high strength, but its environmental index is slightly lower. The comprehensive index of putty in the inner wall is good, and it is hygienic and environmentally friendly. Therefore, the inner wall is not for external use and the outer wall is not for internal use. [0003] Putties are usually based on gypsum or cement, so rough surfaces are easier to bond firmly. However, during construction, it is still necessary to brush a layer ...

AI Technical Summary

Problems solved by technology

Base layer crack resistance is an evaluation index of putty powder, which requires the material itself to have a certain degree of elasticity or plasticity. When micro-cracks occur in the base layer, the material undergoes elastic plastic deformation under the action of external force so that no cracks appear on the surface. The main components of existing putty powder are heavy calcium (or talcum powder), gray calcium, etc., but due to the problems in the formula itself, its anti-cracking performance is not very ideal

[0004] In the prior art, in order to enhance the crack resistance of putty powder, it is generally used to increase the amount of adhesives such as cement or rubber powder, but the effect is not ideal

At the same time, the organic putty powder on the existing market contains such as benzene, toluene, acetone, alcohols, etc., which are harmful to people's health; organic putty powder generally needs to pass through an intermediate medium such as an interface agent to combine well with the inorganic building wall matrix , and the formed organic putty layer still has the disadvantages of easy aging and falling off, poor weather resistance, no fire resistance and water resistance, and low cost performance