Self-cleaning coating and preparation method thereof

A self-cleaning and coating technology, applied in the field of coatings, can solve the problems that the exterior walls are easy to be pasted or printed advertisements, affect the appearance of buildings, and the coating elasticity is easy to age. It achieves high hydrophobicity and self-cleaning characteristics, excellent self-cleaning Cleaning ability, effect of low surface energy

Inactive Publication Date: 2018-09-07
GUANGDONG ZHICHENG CHEM +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Exterior wall coatings are exposed to the atmospheric environment and must withstand weather changes such as wind, sun, rain, smog, etc., and due to increasingly serious environmental pollution, there are more dust and suspended substances in the atmosphere, which will easily make the coating The original decorative effect will be lost due to powdering, discoloration, peeling, staining, etc., which will affect the appearance of the building; and the existing external wall is easy to be pasted or printed with advertisements, which is difficult to clean
[0004] However, the main problems of exterior wall coatings currently on the market are poor stain resistance, easy contamination of the coating, and easy aging of the coating elasticity, resulting in cracking and falling off of the wall surface, which not only affects the appearance of the building, but also affects the appearance of the wall surface. Cracks, causing water leaks on the wall

Method used

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  • Self-cleaning coating and preparation method thereof
  • Self-cleaning coating and preparation method thereof
  • Self-cleaning coating and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] A self-cleaning paint, comprising the following raw materials in parts by weight:

[0048]

[0049] The fluorocarbon resin is a silicone modified fluorocarbon resin.

[0050] The inorganic filler is a mixture composed of modified nano kaolin, modified nano zirconium powder, modified calcium sulfate whiskers and rare earth mixture in a weight ratio of 0.4:0.8:1:0.2.

[0051] The thickener is a mixture of methyl cellulose, hydroxyethyl cellulose or hydroxypropyl methyl cellulose in a weight ratio of 1:0.5:1; the reinforcing agent is made of phenolic fiber, glass fiber and silicon A mixture of acid aluminum fibers in a weight ratio of 0.5:1.5:1.

[0052] The self-cleaning aid is a mixture of nano-titanium dioxide sol, silicon dioxide solution and nano-antimony-doped tin dioxide in a weight ratio of 0.4:1:0.8; the self-cleaning non-stick agent is composed of chlorinated paraffin, white oil and naphthenic oil in a weight ratio of 1:0.8:1.4.

[0053] The crosslinking agen...

Embodiment 2

[0059] A self-cleaning paint, comprising the following raw materials in parts by weight:

[0060]

[0061] The fluorocarbon resin is a silicone modified fluorocarbon resin.

[0062] The inorganic filler is a mixture composed of modified nano kaolin, modified nano zirconium powder, modified calcium sulfate whiskers and rare earth mixture in a weight ratio of 0.5:0.9:1:0.3.

[0063] The thickener is a mixture of methylcellulose, hydroxyethylcellulose or hydroxypropylmethylcellulose in a weight ratio of 1.2:0.8:1; the reinforcing agent is made of phenolic fiber, glass fiber and silicon A mixture of acid aluminum fibers in a weight ratio of 0.8:1.8:1.

[0064] The self-cleaning aid is a mixture of nano-titanium dioxide sol, silicon dioxide solution and nano-antimony-doped tin dioxide in a weight ratio of 0.5:1:0.9; the self-cleaning non-stick agent is composed of chlorinated paraffin, white oil and naphthenic oil in a weight ratio of 1:0.9:1.6.

[0065] The crosslinking agen...

Embodiment 3

[0071] A self-cleaning paint, comprising the following raw materials in parts by weight:

[0072]

[0073]

[0074] The fluorocarbon resin is a silicone modified fluorocarbon resin.

[0075] The inorganic filler is a mixture composed of modified nano kaolin, modified nano zirconium powder, modified calcium sulfate whiskers and rare earth mixture in a weight ratio of 0.6:1:1:0.4.

[0076] The thickener is a mixture of methylcellulose, hydroxyethylcellulose or hydroxypropylmethylcellulose in a weight ratio of 1.5:1:1; the reinforcing agent is made of phenolic fiber, glass fiber and silicon A mixture of acid aluminum fibers in a weight ratio of 1:2:1.

[0077] The self-cleaning aid is a mixture of nano-titanium dioxide sol, silicon dioxide solution and nano-antimony-doped tin dioxide in a weight ratio of 0.6:1:1; the self-cleaning non-stick agent is composed of chlorinated paraffin, white oil and naphthenic oil in a weight ratio of 1:1:1.8.

[0078] The crosslinking agen...

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Abstract

The invention relates to the technical field of coatings, in particular to a self-cleaning coating and a preparation method thereof. The self-cleaning coating is prepared from the following raw materials including fluorocarbon resin, inorganic filler, a thickening agent, an enhancer, a self-cleaning additive, a self-cleaning non-adhesion agent, a crosslinking agent, a coupling agent, a flatting agent, a defoamer, a wetting agent, a film-forming additive, other additive and a solvent. The self-cleaning exterior wall coating provided by the invention has very low surface energy so as to have relatively high hydrophobicity and self-cleaning characteristic, is durable in stain resistance, can reach the self-cleaning effect through scouring with rainwater, is strong in weatherability, resists water, acid and alkali, inhibits bacteria, prevents mould and is good in outdoor gloss and color retention.

Description

technical field [0001] The invention relates to the technical field of coatings, in particular to a self-cleaning coating and a preparation method thereof. Background technique [0002] Exterior wall paint has rich colors, flexible and diverse finishes, can express rich and colorful architectural styles, is convenient for construction, easy to maintain, light in weight, safe and reliable, and has become an exterior wall finish material strongly advocated and promoted by the state. [0003] Exterior wall coatings are exposed to the atmospheric environment and must withstand weather changes such as wind, sun, rain, smog, etc., and due to increasingly serious environmental pollution, there are more dust and suspended substances in the atmosphere, which will easily make the coating The layer will lose its original decorative effect due to powdering, discoloration, peeling, staining, etc., which will affect the appearance of the building; and the existing outer wall is easy to be...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D127/12C09D5/16C09D7/61C09D7/65C09D5/14
Inventor 周建兰
Owner GUANGDONG ZHICHENG CHEM
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