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Anticorrosive coating for metal surfaces

A technology for anti-corrosion coatings and metal surfaces, which is applied in the preparation of anti-corrosion coatings, anti-corrosion coatings, and anti-corrosion coatings. It can solve the problems of difficult anti-corrosion effects, durability, and poor weather resistance. The method is simple and easy to achieve long-term and effective effects of hardness and anti-corrosion effect

Pending Publication Date: 2019-01-18
SUZHOU ZEMEI NEW MATERIAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the coating has poor durability and weather resistance, and it is difficult to produce long-lasting anti-corrosion effects

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] Preparation of nano magnesium hydroxide.

[0048] Use deionized water to configure a saturated solution of magnesium chloride, then filter the saturated solution through a membrane filter to obtain a magnesium chloride filtrate, use deionized water to mix with the magnesium chloride to configure a magnesium chloride solution with a concentration of 1.0M, and in the magnesium chloride solution Continue to add citric acid and urea; then add ammonia water dropwise until the pH value of the solution is 8.5, heat the solution to 65°C, continue stirring to obtain a gel, and dry the obtained magnesium hydroxide particles. The method of the present invention adds a small amount of citric acid and urea to regulate the particle size and particle shape of the magnesium hydroxide to obtain uniform magnesium hydroxide particles. The magnesium hydroxide particles are spherical and have a particle diameter of 150nm.

Embodiment 2

[0050] Preparation of nano magnesium hydroxide.

[0051] Use deionized water to configure a saturated solution of magnesium chloride, then filter the saturated solution through a membrane filter to obtain a magnesium chloride filtrate, use deionized water to mix with the magnesium chloride to prepare a magnesium chloride solution with a concentration of 0.02M, and in the magnesium chloride solution Continue to add citric acid and urea; then add ammonia water dropwise until the pH value of the solution is 8.5, heat the solution to 65°C, continue stirring to obtain a gel, and dry the obtained magnesium hydroxide particles. The method of the present invention adds a small amount of citric acid and urea to regulate the particle size and particle shape of the magnesium hydroxide to obtain uniform magnesium hydroxide particles. The magnesium hydroxide particles are spherical and have a particle diameter of 50nm.

Embodiment 3

[0053] Organic groups are grafted onto the inorganic oxide particles.

[0054] Select nano-titanium dioxide, nano-silicon dioxide and nano-cerium oxide with a particle size between 50-120nm to mix to obtain inorganic oxide particles; place the inorganic oxide particles in a heating furnace and heat to 450°C in an air or oxygen atmosphere , keep calcination for 5h, and then naturally cool to room temperature to obtain pretreated inorganic oxide particles for use; 2-(3,4-epoxycyclohexyl)ethyltriethoxysilane, PEO-PPO- PEO tri-block copolymer and absolute ethanol are mixed, stirred evenly to obtain a modified liquid, and then sprayed onto the pretreated inorganic oxide particles, stirred evenly, to obtain modified inorganic oxide particles; wherein, the pretreated The mass ratio of inorganic oxide particles, 2-(3,4-epoxycyclohexyl) ethyltriethoxysilane, PEO-PPO-PEO triblock copolymer, dehydrated alcohol is 15: 5: 1:5.

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Abstract

The invention provides an anticorrosive coating for metal surfaces and a preparation method thereof. The anticorrosive coating comprises epoxy resin, nano magnesium hydroxide, graphene oxide, modifiedinorganic oxide particles, a functional additive and a solvent. The anticorrosive coating achieves a good anticorrosive effect, and all the components are synergistic. The preparation method is simple and easy to implement, and can realize large-scale industrial production. The prepared anticorrosive coating can realize long-term corrosion protection to hulls in deep sea environments.

Description

technical field [0001] The invention relates to the technical field of metal surface engineering, in particular to an anti-corrosion coating for metal surfaces, in particular to an anti-corrosion coating for the surface of steel, aluminum and their alloys, a preparation method for the anti-corrosion coating, and an anti-corrosion coating. layer preparation method. Background technique [0002] Except for a small amount of inert metals in nature, most of the other metals and their alloys are prone to corrosion under natural conditions. Before use, they generally have to undergo protective treatment to improve their corrosion resistance and prolong their service life. The total cost of corrosion in my country accounts for about 3% to 5% of GDP. Corrosion has become an important factor affecting the sustainable development of society and national economy. Metal structures, especially steel structures, will be corroded if they are in the atmosphere or water environment (marine ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D163/00C09D7/61C09D7/62C09D5/08
CPCC08K2003/2213C08K2003/2224C08K2003/2241C08K2201/011C09D5/08C09D7/61C09D7/62C09D163/00C08K13/06C08K9/06C08K9/08C08K3/22C08K3/042C08K3/36
Inventor 莫云泽
Owner SUZHOU ZEMEI NEW MATERIAL TECH
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