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Water-borne acrylic resin outer wall coating and preparation method thereof

A water-based acrylic and exterior wall coating technology, applied in the direction of coating, can solve the problems of loss of decoration and protection function of paint film, decrease of paint film adhesion, coating bubbling, etc., to reduce construction costs and achieve good film-forming properties , the effect of easy production

Inactive Publication Date: 2015-09-09
上海三银涂料科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] After the existing water-based acrylic resin exterior wall paint is applied to the concrete exterior wall, since the paint film is relatively dense after the coating dries, the water vapor in the wall and the carbon dioxide produced by the slow reaction of the wall cannot be released, resulting in bubbling of the coating and the deterioration of the paint film. sharp drop in adhesion
With the increase of water vapor and carbon dioxide in it, the bulging bubbles will become bigger and bigger and finally burst, and the decorative and protective functions of the paint film will be lost.

Method used

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  • Water-borne acrylic resin outer wall coating and preparation method thereof
  • Water-borne acrylic resin outer wall coating and preparation method thereof
  • Water-borne acrylic resin outer wall coating and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] The distribution ratio of each component of the waterborne acrylic resin exterior wall paint is (wt%):

[0054]

[0055] The preparation method of present embodiment coating is:

[0056] According to the above formula, add wetting and dispersing agent, neutralizing agent, 50wt% of defoamer, 50wt% of preservative and pigment into 50wt% of deionized water, and grind to ≤40μm with sand mill after dispersing evenly. Add 50wt% of defoamer, 50wt% of preservative, water-based acrylic emulsion LWJ-8128, antifreeze, expansion agent H-40F, sodium sulfate, air-entraining agent WF, thickener and deionized water under stirring at 500rpm 50wt%.

Embodiment 2

[0058] The distribution ratio of each component of the waterborne acrylic resin exterior wall paint is (wt%):

[0059]

[0060] The preparation method of present embodiment coating is:

[0061] According to the above formula, add 30wt% of wetting and dispersing agent, neutralizing agent, defoamer, 30wt% of preservative and pigment into 30wt% of deionized water, and grind to ≤40μm with sand mill after dispersing evenly. Add 70wt% of defoamer, 70wt% of preservative, water-based acrylic emulsion BLJ-7547, antifreeze, expansion agent HD-40D, sodium sulfate, air-entraining agent JDU-1, thickener and deionization under stirring at 500rpm 70wt% of water.

Embodiment 3

[0063] The distribution ratio of each component of the waterborne acrylic resin exterior wall paint is (wt%):

[0064]

[0065] The preparation method of present embodiment coating is:

[0066] According to the above formula, add wetting and dispersing agent, neutralizing agent, 50wt% of defoamer, 50wt% of preservative and pigment into 50wt% of deionized water, and grind to ≤40μm with sand mill after dispersing evenly. Add 50wt% of defoamer, 50wt% of preservative, water-based acrylic emulsion RS-899, antifreeze, expansion agent H-F, sodium sulfate, air-entraining agent WDN-10, thickener and deionized water under stirring at 500rpm 50wt%.

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Abstract

The invention relates to a water-borne acrylic resin outer wall coating and a preparation method thereof. The outer wall coating comprises, by weight percentage, 40.20-66.60% of aqueous acrylic emulsion, 17.50-34.10% of pigments, 1.20-3.30% of wetting dispersant, 0-0.52% of neutralizer, 0.30-0.80% of organic silicon defoamer, 0-0.50% of preservatives, 0.09-3.17% of thickening agent, 2.68-8.00% of expansion agent, 0.70-4.70% of anti-freezing agent, 0.50-2.00% of sodium sulfate, 0.01-0.03% of air-entraining agent and 3.00-12.20% of water. The pH of the coating is 9.2-9.8. The water-borne acrylic resin outer wall coating has the advantages that the coating is good in steam and carbon dioxide permeability, weather resistance and temperature change resistance, bubbling and efflorescence caused by base material water content difference is avoided, and the decoration and protecting function of the coating is kept for a long time; the coating is good in film forming performance, film forming can be achieved without adding film forming auxiliaries, and VOC contents in products are lowered effectively.

Description

technical field [0001] The invention relates to a wall paint, in particular to a water-based acrylic resin exterior wall paint and a preparation method thereof. Background technique [0002] After the existing water-based acrylic resin exterior wall paint is applied to the concrete exterior wall, since the paint film is relatively dense after the coating dries, the water vapor in the wall and the carbon dioxide produced by the slow reaction of the wall cannot be released, resulting in bubbling of the coating and the deterioration of the paint film. Adhesion drops sharply. As the amount of water vapor and carbon dioxide increases, the bubbling bubbles become bigger and bigger and finally burst, and the decorative and protective functions of the paint film are lost. At the same time, the concrete wall will undergo hydration reaction with air or water vapor in the wall to form hydroxide (chemical property is alkaline). When the temperature rises, the water vapor evaporates, t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D125/14C09D7/12
CPCC09D125/14C08L2205/03C09D7/61C09D7/63C09D7/65C08L75/04C08K13/02C08K5/053C08K2003/3045
Inventor 马安荣池钟慷郑巧玲何小敏胡祥顺俞成刚
Owner 上海三银涂料科技股份有限公司
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