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Antifouling and wear-resistant coating for metal surface and preparation method thereof

A wear-resistant coating, metal surface technology, applied in anti-fouling/underwater coatings, alkali metal silicate coatings, anti-corrosion coatings, etc. problems such as high tension, to achieve the effect of improving storage stability, enhancing water resistance, and improving adhesion

Active Publication Date: 2019-11-08
GUANGZHOU SYSMYK NEW MATERIAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the water-based coatings used on metal surfaces in the market have problems such as anti-corrosion performance, poor anti-fouling performance and poor adhesion. They are prone to yellowing under high temperature conditions, and the hardness and wear resistance are not good. When the coating is polluted, it is difficult to clean up. And other issues
As a result, the elasticity of the coating is easy to age, resulting in a large number of metal spots and emulsification spots on the metal surface. The main reason for the above defects is that it uses water as a solvent or dispersion medium. Due to the high surface tension of water, the vaporization High temperature, difficult to wet, difficult to dissolve and other factors

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] A kind of antifouling wear-resisting coating that is used for metal surface provided by the present invention, every 100g is made up of following weight number components: high modulus potassium silicate 3.2g, lithium silicate 3.6g, the ST- N series of silica sol with a particle size of 3nm is 3.2g, alumina sol is 2.4g, nano-zirconia sol is 1.6g, silicon tripolyphosphate is 1.2g, and the balance is water.

[0025] The preparation method of the high-modulus potassium silicate is as follows: add potassium silicate into a three-necked flask, stir and mix well, and at a temperature of 70°C, slowly and then quickly add silica sol and γ-aminopropyltrimethoxysilane dropwise, Insulated for 3 hours to obtain a particle size of 110nm, a modulus of 5, and a high modulus potassium silicate with a solid content of 40%, the moles of the potassium silicate, silica sol and γ-aminopropyltrimethoxysilane The ratio is 1:1.8:1.2.

Embodiment 2

[0027] Another kind of anti-fouling and wear-resistant paint for metal surfaces provided by the present invention is composed of the following components by weight per 100g: high modulus potassium silicate 9.6g, lithium silicate 2.4g, Nissan Chemical Industry Co., Ltd. ST- C series 4.8g of silica sol with a particle diameter of 3nm and a particle diameter of 15nm, 1.6g of alumina sol, 2.4g of nano-zirconia sol, 0.8g of silicon tripolyphosphate, and the balance is water.

[0028] The preparation method of the high-modulus potassium silicate is as follows: add potassium silicate to a three-necked flask, stir and mix well, at a temperature of 50°C, add silica sol and methyltrimethoxysilane dropwise first slowly and then quickly, and keep warm for 3 hours , to obtain a particle size of 140nm, a modulus of 6, and a solid content of 35% high modulus potassium silicate, the mol ratio of the potassium silicate, silica sol and methyltrimethoxysilane is 1:3.2:0.6 .

Embodiment 3

[0030] Another antifouling and wear-resistant coating for metal surfaces provided by the present invention is composed of the following components by weight per 100g: 4g of high modulus potassium silicate, 3g of lithium silicate, and the FM series particle diameter of Grace is 3nm 4g of silica sol, 2g of alumina sol, 2g of nano-zirconia sol, 1g of silicon tripolyphosphate, and the balance is water.

[0031] The preparation method of the high-modulus potassium silicate is as follows: add potassium silicate to a three-necked flask, stir and mix well, at a temperature of 60°C, slowly and then quickly add silica sol, glycidyltrimethoxysilane and γ- Aminopropyltrimethoxysilane, heat preservation reaction for 3 hours, obtained particle diameter is 12nm, modulus is 6, and solid content is 33% high modulus potassium silicate, described potassium silicate, silica sol, epoxypropylene The molar ratio of trimethoxysilane to γ-aminopropyltrimethoxysilane is 1:2:0.6:0.3.

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Abstract

The invention discloses an antifouling wear-resisting coating for a metal surface and a preparation method thereof. The invention aims to provide the antifouling wear-resisting coating for the metal surface, which is easy to clean, excellent in wear resistance and high in hardness. The technical scheme is that the antifouling wear-resisting coating is prepared from, by weight percent, 3.2-9.6% of high modulus potassium silicate, 2.4-3.6% of lithium silicate, 3.2-4.8% of silica sol, 1.6-2.4% of aluminum oxide sol, 1.6-2.4% of nanometer zirconia, 0.8-1.2% of silicon triphosphate, and the balance being water. The coating is prepared by weighing the components respectively and uniformly mixing and stirring the components. The antifouling wear-resisting coating belongs to the technical field of coatings.

Description

technical field [0001] The invention relates to a coating and a preparation method thereof, more specifically to an antifouling and wear-resistant coating specially used on metal surfaces and a preparation method thereof, belonging to the technical field of coatings. Background technique [0002] Water-based paint is a paint that uses water as a diluent and does not contain organic solvents. It is non-toxic, non-irritating, harmless to the human body, does not pollute the environment, and saves resources. It has attracted widespread attention in recent years and can be used for Metal, plastic, glass and other materials. [0003] At present, the water-based coatings used on metal surfaces in the market have problems such as anti-corrosion performance, poor anti-fouling performance and poor adhesion. They are prone to yellowing under high temperature conditions, and the hardness and wear resistance are not good. When the coating is polluted, it is difficult to clean up. And o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D1/04C09D1/00C09D5/08C09D5/16
CPCC09D1/00C09D1/04C09D5/08C09D5/1656C09D5/18
Inventor 龚红升蒋卫中周智维
Owner GUANGZHOU SYSMYK NEW MATERIAL TECH CO LTD
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