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External wall water-fast putty powder

A water-resistant putty and exterior wall technology, which is applied in the field of construction filling materials and exterior wall water-resistant putty powder, can solve the problems of poor adhesion, poor water resistance, and short service life, and achieve strong water resistance and cohesiveness. Excellent performance and long service life

Inactive Publication Date: 2014-12-17
WUHU SHUANGBAO BUILDING MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Among the above-mentioned exterior wall putty powders, some have low bonding strength and poor adhesion, some have poor water resistance, are prone to hollowing, peeling, and cracking, and some are chemically unstable and easily corroded by acid and alkali. Mildew, some have poor tolerance to hot and cold temperature changes, short service life, and exterior wall putty powder with excellent comprehensive performance has not yet appeared

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Prepare japonica rice gel powder as follows:

[0036] Use japonica rice as raw material, add 3-8 times the weight of water, cook until it becomes a slurry, filter to remove non-slurry matter, then cool, dry, grind, and pass through a 140-mesh sieve to make japonica rice with a fineness of ≤140 mesh rubber powder.

Embodiment 2

[0038] A kind of exterior wall water-resistant putty powder, it comprises the raw material according to following percentage by weight ratio:

[0039] Kaolin powder 25%, sepiolite powder 15%, Portland cement 30%, gypsum powder 9%, hydroxypropyl methylcellulose 4%, japonica rice gel powder 10%, cold-melt polyvinyl alcohol powder 2%.

Embodiment 3

[0041] A kind of exterior wall water-resistant putty powder, it comprises the raw material according to following percentage by weight ratio:

[0042] Kaolin powder 30%, sepiolite powder 13%, Portland cement 35%, gypsum powder 6%, hydroxypropyl methylcellulose 5%, japonica rice gel powder 5%, cold-melt polyvinyl alcohol powder 3%.

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PUM

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Abstract

The invention belongs to the field of chemical engineering and relates to a building filler material, particularly to external wall water-fast putty powder. The external wall water-fast putty powder comprises the following raw materials by weight percent: 15-35 percent of kaolinite powder, 10-20 percent of meerschaum powder, 20-40 percent of Portland cement, 5-15 percent of gypsum powder, 1-6 percent of hydroxy propyl methyl cellulose, 2-20 percent of japonica rice gel powder and 0.5-4 percent of cold melt polyvinyl alcohol rubber powder. The external wall water-fast putty powder provided by the invention has the advantages of extremely high water resistance and cohesiveness, high strength, acid-base corrosion resistance, high and low temperature variation resistance, and mildew resistance, and is free of the phenomena of hollowing, peeling, cracking and flaking, and maintained to be harder and stronger after being dampened by water.

Description

technical field [0001] The invention belongs to the field of chemical industry and relates to building filling materials, in particular to a water-resistant putty powder for exterior walls. Background technique [0002] Putty is a kind of surface filling material for pretreatment of the construction surface before the construction of paint. Good bonding strength and water resistance to ensure that under the long-term erosion of water vapor in the air, there will be no hollowing, peeling, cracking, etc., and it can still be tightly combined with the substrate, playing a good role in decoration and protection. Since the exterior wall of the building is outside for a long time and is more affected by the environment, construction projects have proposed higher water resistance, acid and alkali corrosion resistance, resistance to cold and hot temperature changes, bond strength and crack resistance of the exterior wall putty. requirements. [0003] CN 1161428C discloses a strong...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/04
Inventor 胡昌悌
Owner WUHU SHUANGBAO BUILDING MATERIAL