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Bubble breaking type thick waterborne elastic middle coating and preparation method thereof

A foam breaking, water-based technology, applied in the field of coatings, can solve the problems of high elongation at break, poor stain resistance, unstable shape, etc., and achieve the effects of high elongation at break, good temperature resistance and easy operation.

Inactive Publication Date: 2019-01-18
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

[0003] The purpose of the present invention is to overcome the shortcomings of the thick water-based elastic middle layer coating of the above-mentioned prior art, such as difficult foam breaking, unstable shape, foaming, cracking, peeling, poor stain resistance, etc. Wall decoration and protection function, and the bubble breaks quickly during the construction process, the shape is stable, the paint film does not bubble, fall off, and crack within 10 to 15 years of application, and the coating has good stain resistance, temperature change resistance, and low temperature flexibility. , high tensile strength, high elongation at break, low VOC, free formaldehyde-free, heavy metal-free, non-dangerous, environmentally friendly thick foam-breaking water-based elastic middle layer coating and preparation method thereof

Method used

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  • Bubble breaking type thick waterborne elastic middle coating and preparation method thereof
  • Bubble breaking type thick waterborne elastic middle coating and preparation method thereof
  • Bubble breaking type thick waterborne elastic middle coating and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] The proportion of each component of the thick foam-breaking type water-based elastic middle coating is (wt%):

[0054]

[0055] The preparation method of the thick foam-breaking type water-based elastic middle coating is as follows:

[0056] According to the above formula, hydroxyethyl cellulose (HEC), the wetting and dispersing agent, the neutralizing agent, the silicone defoamer accounting for 50% of the quality of the silicone defoamer, the quality of the preservative 50% of preservatives, the pigments, the fillers and 50% of the water mass are uniformly mixed at room temperature, and ground to below 40 μm, and the rest of the silicone defoamer is added under stirring at a speed of 500 rpm , the remaining preservative, the flexible acrylic emulsion, the film-forming aid, the antifreeze, the water-based release agent, the thickener and the remaining water, mix well, add PA short fiber 300rpm Stir at a rotating speed for 30 minutes, let it stand for 30 minutes, and...

Embodiment 2

[0058] The proportion of each component of the thick foam-breaking type water-based elastic middle coating is (wt%):

[0059]

[0060] The preparation method of the thick foam-breaking type water-based elastic middle coating is as follows:

[0061] According to the above formula, hydroxyethyl cellulose (HEC), the wetting and dispersing agent, the neutralizing agent, the silicone defoamer accounting for 40% of the quality of the silicone defoamer, the quality of the preservative 40% of the preservative, the pigment, the filler, and 40% of the water mass are uniformly mixed at room temperature, and ground to below 40 μm, and the remaining silicone defoamer is added under stirring at a speed of 400 rpm , the remaining preservative, the flexible acrylic emulsion, the film-forming aid, the antifreeze, the water-based release agent, the thickener and the remaining water, mix well, add PA short fiber 300rpm Stir at a rotating speed for 25 minutes, let it stand for 30 minutes, and...

Embodiment 3

[0063] The proportion of each component of the thick foam-breaking type water-based elastic middle coating is (wt%):

[0064]

[0065]

[0066] The preparation method of the thick foam-breaking type water-based elastic middle coating is as follows:

[0067] According to the above formula, hydroxyethyl cellulose (HEC), the wetting and dispersing agent, the neutralizing agent, the silicone defoamer accounting for 30% of the quality of the silicone defoamer, the quality of the preservative 30% of the preservative, the pigment, the filler and 30% of the water mass are uniformly mixed at room temperature, and ground to below 40 μm, and the remaining silicone defoamer is added under stirring at a speed of 300 rpm , the remaining preservative, the flexible acrylic emulsion, the film-forming aid, the antifreeze, the water-based release agent, the thickener and the remaining water, mix well, add PA short fiber 200rpm Stir at a rotating speed for 20 minutes, let it stand for 30 m...

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Abstract

The invention relates to a bubble breaking type thick waterborne elastic middle coating. Raw materials of the coating in a formula comprise components in percentage by mass as follows: 28.00%-32.00% of flexible acrylic emulsion, 0.16%-0.17% of hydroxyethyl cellulose, 2.40%-3.00% of pigment, 46.00%-48.00% of filler, 1.30%-1.99% of a wetting dispersant, 0.21%-0.22% of a neutralizer, 0.08%-0.13% of awaterborne releasing agent, 0.21%-0.24% of an organosilicon defoamer, 0.21%-0.25% of a preservative, 0.90%-0.91% of a thickener, 0.86%-0.96% of a coalescing agent, 1.80%-2.20% of an antifreezing agent, 0.22%-0.43% of PA short fiber and 10.85%-15.53% of water. The invention further relates to a preparation method of the coating. With the adoption of the coating and the preparation method thereof,bubbles are broken quickly in a construction process, and modeling is stable.

Description

technical field [0001] The invention relates to the technical field of coatings, in particular to coatings for exterior walls of buildings, in particular to a thick foam-breaking water-based elastic middle coating and a preparation method thereof. Background technique [0002] With the continuous development of my country's real estate market, the demand for architectural coatings is strong. However, on the supply side, the variety of architectural coatings still cannot meet the market demand. With the increasing demand for environmental protection, personalized and functional architectural coatings and the continuous improvement of coating technology, the variety of architectural coatings on the market is also constantly enriched. In recent years, as a branch of architectural coatings, water-based elastic intermediate coatings, which are large in quantity and low in price, have developed rapidly and their application areas have become larger and larger. At the same time, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D133/00C09D5/16C09D7/61C09D7/63
CPCC08K2003/2241C08K2003/265C08L2205/02C08L2205/035C08L2205/16C09D5/1687C09D133/00C08L1/284C08L77/06C08K13/02C08K3/22C08K5/053C08K3/26C08L77/02
Inventor 马安荣池钟慷郑巧玲梁乃文
Owner 上海三银涂料科技股份有限公司
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