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High-performance silica sol inorganic exterior wall coating

A technology of inorganic coating and silica sol, applied in the direction of coating, can solve the problems of easy gelation, poor stability, etc., and achieve the effects of low cost, good coating film formation, and cheap raw materials

Active Publication Date: 2014-01-01
鳄鱼尼卡(上海)新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a high-performance silica sol inorganic coating, which is modified with pure acrylic emulsion to improve the film-forming properties of the product, and select the best pH stabilizer to improve the defects of silica sol coating such as easy gelation and poor stability.

Method used

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Examples

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Embodiment 1

[0024] A high-performance silica sol inorganic exterior wall coating, containing 17% by weight of silica sol, 8% pure acrylic emulsion, 45% pigments and fillers, 24% water and 6% additives.

[0025] Its preparation method is: first mix water, hydroxyethyl cellulose, pH stabilizer, defoamer, dispersant, wetting agent, rutile titanium dioxide, kaolin, and heavy calcium, and then disperse it in a high-speed dispersion kettle. The dispersion time is After 30 minutes, add silica sol, emulsion, bactericide, film-forming aid, propylene glycol, and silicone water repellent into the dispersion tank and stir, and then filter after stirring for 20 minutes to obtain a high-performance silica sol inorganic exterior wall coating.

[0026] The selected raw materials are as follows:

[0027] The silica sol is selected from the LS-30 model silica sol SiO of Zhejiang Yuda Chemical Co., Ltd. 2 The content is 30%, and the pH value is 9.

[0028] The pure acrylic emulsion was selected from Dow's...

Embodiment 2

[0031] Example 2: A high-performance silica sol inorganic exterior wall paint, containing 25% by weight silica sol, 10% pure acrylic emulsion, 38% pigments and fillers, 19.5% water and 7.5% additives.

[0032] Its preparation method is: first mix water, hydroxyethyl cellulose, pH stabilizer, defoamer, dispersant, wetting agent, rutile titanium dioxide, kaolin, and heavy calcium, and then disperse it in a high-speed dispersion kettle. The dispersion time is After 30 minutes, add silica sol, emulsion, bactericide, film-forming aid, propylene glycol, and silicone water repellent into the dispersion tank and stir, and then filter after stirring for 20 minutes to obtain a high-performance silica sol inorganic exterior wall coating.

[0033] The selected raw materials are as follows:

[0034] The silica sol is selected from the LS-30 model silica sol SiO of Zhejiang Yuda Chemical Co., Ltd. 2 The content is 30%, and the pH value is 9.

[0035] The pure acrylic emulsion is selected ...

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Abstract

The invention discloses a high-performance silica sol inorganic exterior wall coating which comprises the following components in percentage by weight: 15-25% of silica sol, 8-10% of emulsion, 38-45% of color filler, 15-20% of water and 5-10% of additive. The product conforms to the definition of 2.4.1 silicate coating in the German DIN18363 standard; since the raw material silica sol is cheap, the cost of the high-performance silica sol inorganic exterior wall coating disclosed by the invention is lower than that of a common organic exterior wall coating; meanwhile, with fine adhesion, good weather resistance and color retention and excellent resistance against water and chemicals and without peeling, the high-performance silica sol inorganic exterior wall coating has better storage stability and weather resistance than the conventional inorganic coating.

Description

technical field [0001] The invention relates to a silica sol inorganic exterior wall coating, in particular to an inorganic exterior wall coating which takes silica sol as the main film-forming substance and modifies a small amount of pure acrylic emulsion, and belongs to the field of architectural coatings. Background technique [0002] From the standpoint of environmental protection, the coating industry should develop in the direction of water-based, pollution-free, energy-saving and resource-saving. At present, the commonly used coatings on building walls are organic coatings. , Water resistance, stain resistance, and mildew resistance are poor, and silica sol inorganic exterior wall coatings have begun to develop in China in recent years. Countries such as Europe and the United States have widely used inorganic coatings as exterior wall decoration and protection, and their excellent weather resistance, color retention and air permeability have been recognized by people....

Claims

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Application Information

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IPC IPC(8): C09D1/00C09D7/12
Inventor 徐昌平卢荣明王律
Owner 鳄鱼尼卡(上海)新材料有限公司
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