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High-stability composite coating

A composite coating with high stability technology, applied in the direction of coating, etc., can solve the problems of shortening product shelf life, affecting coating performance, easy cracking, etc., and achieves excellent chemical resistance, excellent adhesion, and long shelf life.

Inactive Publication Date: 2013-01-16
WUJIANG TIANYUAN PLASTIC
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Silica sol is a colloidal sol of inorganic polymer polymetasilicate with water as the dispersion medium. With the evaporation of water, the amount of silica particles can form a strong Si-O bond and become a continuous coating film, but the formation of silica sol The rigidity of the coating film is poor, the gloss is poor, and it is easy to crack, which affects its performance
In addition, the storage stability of the coating made of silica sol is not good, and it is usually prone to precipitation and layering, which shortens the shelf life of the product, and also affects the performance of the coating when used.

Method used

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Embodiment Construction

[0018] The components were prepared in the weight ratios shown in Table 1.

[0019] The weight proportion of table 1 embodiment 1~embodiment 3

[0020]

[0021]

[0022] In the above-mentioned examples, the solid content range of the styrene-acrylic emulsion is controlled between 45% and 50%; the solid content range of the silica sol is between 20% and 30%; the defoamer uses tributyl phosphate; the surfactant is ten Sodium dialkyl sulfonate; silane coupling agent KH-570 is used as the coupling agent; The preparation method is:

[0023] S1: Polyvinyl alcohol, potassium sodium aluminosilicate, sodium methyl silicate, cellulose, titanium dioxide, heavy calcium, bentonite, lithopone, talcum powder, defoamer, surfactant, coupling agent, anti-foaming agent Mold agent, ethylene glycol, hexylene glycol, hexamethoxymelamine, and water are mixed evenly in proportion, and then ground;

[0024] S2: Add styrene-acrylic emulsion, polyvinyl acetate-ethylene emulsion, polystyrene-but...

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Abstract

The invention provides a styrene acrylic emulsion-silica sol composite coating, and belongs to the technical field of coatings. The composite coating comprises the following components in part by weight: 30-40 parts of styrene acrylic emulsion, 5-12 parts of silica sol, 12-15 parts of polyvinyl alcohol, 3-5 parts of polyvinyl acetate-ethylene emulsion, 4-6 parts of styrene-butadiene resin emulsion, 2-3 parts of sodium potassium aluminosilicate, 1-3 parts of methyl sodium silicate, 4-7 parts of cellulose, 4-8 parts of titanium dioxide, 4-8 parts of triple superphosphate, 12-18 parts of bentonite, 10-15 parts of lithopone, 5-12parts of talcum powder, 2-3 parts of defoamer, 1-2 parts of surfactant, 2-4 parts of coupling agent, 1-3 parts of mildew inhibitor, 5-8 parts of ethylene glycol, 3-6 parts of hexanediol, 2-3 parts of hexamethoxyl melamine, 4-8 parts of ammonia and 50-80 parts of deionized water. The composite coating has the advantages of excellent adhesion, chemical reagent resistance and water resistance and long shelf life.

Description

technical field [0001] The invention provides a high-stability composite coating, in particular to a composite coating of styrene-acrylic emulsion-silica sol, which belongs to the technical field of coatings. Background technique [0002] At present, in the paint market, synthetic resin emulsion paints are becoming more and more popular. Compared with oil-based paints, water-based paints have less pollution and less volatile organic matter, and are more suitable for environmental protection. [0003] Among them, silica sol is widely used for its excellent weather resistance, acid and alkali resistance and water-based coatings. Silica sol is a colloidal sol of inorganic polymer polymetasilicate with water as the dispersion medium. With the evaporation of water, the amount of silica particles can form a strong Si-O bond and become a continuous coating film, but the formation of silica sol The rigidity of the coating film is poor, the gloss is poor, and it is easy to crack, w...

Claims

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Application Information

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IPC IPC(8): C09D125/14C09D129/04C09D7/12
Inventor 肖伟荣
Owner WUJIANG TIANYUAN PLASTIC
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