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High-weather-resistance waterproof exterior wall coating for buildings and preparation method thereof

An exterior wall coating, high weather resistance technology, applied in anti-corrosion coatings, coatings and other directions, can solve problems such as affecting the aesthetics of buildings, reducing the service life of buildings, and easily infiltrating into walls, etc., to achieve protection from damage and gloss. The effect of improving, enhancing strength and corrosion resistance

Active Publication Date: 2021-01-22
徐洪涛
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the water-based acrylic paints on the market tend to be hot, sticky and brittle. In the dry environment below 0 ℃ for a long time in northern my country, they are prone to cracking. In the warm and humid environment of southern my country, water vapor and rainwater are easy to seep into the wall. surface and corrode the wall, which not only affects the aesthetics of the building, but also reduces the service life of the building

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0059] The first high weather resistance waterproof exterior wall coating for buildings provided by this embodiment comprises the following components in parts by mass:

[0060] Fluorosilicone modified acrylic emulsion 50 parts

[0061] Epoxy modified acrylic emulsion 25 parts

[0062] Fluorosilane 15 parts

[0063] 15 parts of organic bentonite

[0064] Silicon oxide 15 parts

[0065] 25 parts of titanium dioxide

[0066] Auxiliary 5 parts

[0067] 25 parts of water.

[0068] Wherein: the solid content of fluorosilicon-modified acrylic emulsion and epoxy-modified acrylic emulsion is 50%-60%; the average particle diameter of the organic bentonite and silicon oxide is 200-400 mesh; the dispersant is sodium hexametaphosphate; The wetting agent is CO-630; the thickener is hydroxyethyl cellulose; the defoamer is mineral oil; the film-forming aid is lauryl alcohol ester; the antifreeze is ethylene glycol.

Embodiment 2

[0070] The second high weather resistance waterproof exterior wall coating for buildings provided by this embodiment comprises the following components in parts by mass:

[0071] Fluorosilicone modified acrylic emulsion 50 parts

[0072] Epoxy modified acrylic emulsion 20 parts

[0073] Fluorosilane 20 parts

[0074] 20 parts of organic bentonite

[0075] Silicon oxide 20 parts

[0076] 30 parts of titanium dioxide

[0077] Auxiliary 8 parts

[0078] 35 parts of water.

[0079] Wherein: the solid content of fluorosilicon modified acrylic emulsion and epoxy modified acrylic emulsion is 50%-60%; the average particle diameter of described organic bentonite and silicon oxide is 200-400 mesh; dispersant is dispersant 5040; The wet agent includes CO-630; the thickener is hydroxyethyl cellulose; the defoamer is a silicone defoamer; the film-forming aid is lauryl alcohol ester; the antifreeze is ethylene glycol.

Embodiment 3

[0081] The third high weather resistance waterproof exterior wall coating for buildings provided in this embodiment comprises the following components in parts by mass:

[0082] Fluorosilicone modified acrylic emulsion 45 parts

[0083] Epoxy modified acrylic emulsion 15 parts

[0084] Fluorosilane 10 parts

[0085] 10 parts of organic bentonite

[0086] Silicon oxide 10 parts

[0087] 20 parts of titanium dioxide

[0088] Auxiliary 1 part

[0089] 15 parts of water.

[0090] Wherein: the solid content of fluorosilicon-modified acrylic emulsion and epoxy-modified acrylic emulsion is 50%-60%; the average particle diameter of the organic bentonite and silicon oxide is 200-400 mesh; the dispersant is sodium hexametaphosphate; The wetting agent is CO-630; the thickener is hydroxyethyl cellulose; the defoamer is mineral oil; the film-forming aid is lauryl alcohol ester; the antifreeze is ethylene glycol.

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Abstract

The invention discloses a high-weather-resistance waterproof exterior wall coating for buildings and a preparation method thereof, the coating comprises the following components: a fluorosilicone modified acrylic emulsion, an epoxy modified acrylic emulsion, fluorosilane, organic bentonite, silicon oxide, titanium dioxide and an auxiliary agent, and the auxiliary agent comprises a dispersant, a wetting agent, a thickener, a defoamer, a coalescing agent and an antifreezing agent. The preparation method comprises the following steps: uniformly mixing the organic bentonite, the silicon oxide andthe titanium dioxide, adding the fluorosilicone modified acrylic emulsion and the epoxy modified acrylic emulsion, uniformly mixing, adding the auxiliary agent, uniformly mixing, and finally adding the fluorosilane. According to the high-weather-resistance waterproof exterior wall coating for the building and the preparation method thereof, the waterproof performance is excellent, and the coatingis self-cleaning, washable and suitable for various external environments.

Description

technical field [0001] The invention relates to the technical field of coatings, in particular to a highly weather-resistant waterproof exterior wall coating for buildings and a preparation method thereof. Background technique [0002] Architectural exterior wall coatings are coatings that are applied to the entire exterior wall of a building. Its main function is to decorate and protect the exterior wall, making the building look flat and beautiful, and at the same time protecting the building. Exterior wall paint needs to be exposed to the outdoor environment. Compared with interior wall paint, it faces a harsher environment, especially in some humid areas in the south, where the waterproof function of exterior wall paint is more demanding. [0003] In the prior art, acrylic emulsion is often used as the base material, and the prepared water-based acrylic paint has the advantages of moderate cost and good adjustability. However, the water-based acrylic paints on the marke...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D133/04C09D151/08C09D7/61C09D7/63C09D7/62C09D5/08C09D7/20
CPCC09D133/04C09D7/61C09D7/63C09D7/62C09D5/08C09D7/70C09D7/20C08K2003/2241C08L51/08C08K13/06C08K5/5419C08K9/04C08K3/346C08K3/36C08K3/22C08K7/24
Inventor 徐洪涛
Owner 徐洪涛
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