Anti-cracking exterior wall putty powder

A technology of exterior wall putty and powder, which is applied in the field of exterior wall putty powder, can solve the problems of poor weather resistance of exterior wall putty powder, achieve the effects of improving weather resistance, solving poor weather resistance, strong water resistance and adhesion

Inactive Publication Date: 2014-03-05
CHONGQING TAIRUI NEW BUILDING MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of this, the present invention provides an anti-crack exterior wall putty powder. The exterior wall putty powder not only has high bonding strength and waterproof, but also has the advantages of anti-crack, which solves the problem of the weather resistance of the existing exterior wall putty powder. poor problem

Method used

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  • Anti-cracking exterior wall putty powder

Examples

Experimental program
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Effect test

Embodiment 1

[0013] Example 1 Standard anti-crack exterior wall putty powder

[0014] The standard anti-crack exterior wall putty powder in this embodiment mainly consists of the following raw materials in parts by weight: heavy calcium carbonate powder 650; gray calcium powder 50; white cement 300; hydroxypropyl methylcellulose 4.5 ; Wood fiber 1. Preferably, the particle fineness of the heavy calcium carbonate powder used is not less than 300 mesh, and the strength of the putty powder can be enhanced by using the heavy calcium carbonate powder as the main filler of the putty powder; white cement is the abbreviation of white Portland cement, which is The hydraulic cementitious material made by adding gypsum to white Portland cement clinker and finely grinding has a typical feature of high whiteness, high bonding strength, and good waterproof performance. Preferably, the exterior wall of the present invention The fineness particle size of white cement in putty powder is not less than 300 ...

Embodiment 2

[0015] Example 2 Anti-radiation type anti-crack exterior wall putty powder

[0016] The anti-radiation type anti-cracking exterior wall putty powder in the second embodiment is a further improved version of the standard type anti-cracking exterior wall putty powder, and it is mainly composed of the following raw materials in parts by weight: heavy calcium carbonate powder 600; Calcium powder 30; white cement 320; hydroxypropyl methylcellulose 5.5; wood fiber 0.6; pure iron powder 5. Preferably, the viscosity of the HPMC is 80,000 to 100,000 mPa·s; the fineness of the ground calcium carbonate powder is not less than 300 mesh; the fineness of the white cement is not less than 300 mesh. After adding pure iron to the exterior wall putty powder, the coefficient of thermal expansion and contraction of the putty powder decreases or even becomes zero, so that the putty powder will not crack due to large temperature changes, and the weather resistance of the putty powder is further imp...

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Abstract

The invention discloses anti-cracking exterior wall putty powder which is prepared from the following raw materials in parts by weight: 600-700 parts of heavy calcium carbonate powder, 30-70 parts of ash-calcium-powder, 260-320 parts of white cement, 3.5-5.5 parts of hydroxypropyl methyl cellulose and 0.6-1.5 parts of wood fibers. The anti-cracking exterior wall putty powder disclosed by the invention not only has extremely strong water resistance and cohesiveness, but also further has the advantages of resistance to high and low temperature changes, anti-cracking property and the like, so that the problem that existing exterior wall putty powder is poorer in weather ability is solved.

Description

technical field [0001] The invention is a design building material, in particular to a kind of exterior wall putty powder with good anti-cracking effect. Background technique [0002] The exterior wall putty powder is made of inorganic gelling material as the base material, and finely processed with bonding materials and other additives. Its outstanding features are high bonding strength, water resistance, alkali resistance and good construction performance. The existing exterior wall putty powder is generally composed of white cement, double fly powder, lime calcium powder, rubber powder and other raw materials. Among them, the rubber powder can improve the bonding performance and cohesion of the material, reduce the water absorption of the material and improve the water retention during use. Sexuality. The disadvantages of the existing putty powder are: it is easy to crack or even fall off in an environment where the temperature difference between morning and evening cha...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D5/34
Inventor 余星华
Owner CHONGQING TAIRUI NEW BUILDING MATERIALS
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