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Corrosion-resistant nano-paint and preparation method thereof

A nano-coating and corrosion-resistant technology, used in anti-corrosion coatings, fire-retardant coatings, coatings, etc., can solve the problems of short service life, easy cracks, peeling, and poor corrosion resistance of high-temperature resistant equipment, and achieve good heat resistance. , not easy to crack or gap, the effect of long service life

Pending Publication Date: 2019-04-16
河南省锅炉压力容器安全检测研究院
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing high-temperature-resistant coatings are prone to oxidation under high-temperature conditions, have poor corrosion resistance, and are prone to cracks and peeling in use, resulting in short service life of high-temperature-resistant equipment.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] A kind of anti-corrosion nano-coating, expressed by weight percentage, the raw material composition of described anti-corrosion nano-coating is: nanoscale titanium dioxide powder 36%, aluminum oxide micropowder 18%, silicon micropowder 8%, silicon carbide micropowder 4%, nitrogen 3% of boron powder, 25% of silica sol, 5% of kaolin with a particle size of 0.5-5 μm, 0.3% of sodium hexametaphosphate, and 0.7% of bentonite; plus water accounting for 26% of the total weight of the above raw materials.

[0028] The preparation method of above-mentioned corrosion-resistant nano-coating, comprises the following steps:

[0029] (1) take each component by weighing the raw material composition of above-mentioned corrosion-resistant nano-coating, for subsequent use;

[0030] (2) After mixing nanoscale titanium dioxide powder, alumina micropowder, silicon micropowder, silicon carbide micropowder, boron nitride micropowder and kaolin, carry out high-speed grinding, make it mix unifor...

Embodiment 2

[0036] A kind of corrosion-resistant nano-coating, represented by weight percentage, the raw material of described corrosion-resistant nano-coating is composed of: nanoscale titanium dioxide powder 40%, alumina micropowder 15%, silicon micropowder 10%, silicon carbide micropowder 3%, nitrogen 4% of boron powder, 20% of silica sol, 7% of kaolin with a particle size of 0.5-5 μm, 0.2% of sodium hexametaphosphate, and 0.8% of bentonite; plus 30% of the total weight of the above raw materials. Water.

[0037] The preparation method of the above-mentioned corrosion-resistant nano-coating is the same as that of Example 1.

[0038] The method of using the above-mentioned corrosion-resistant nano-coating is as follows: spraying the corrosion-resistant nano-coating on the surface of the substrate, drying it, and curing it at 500° C. for 3 hours.

Embodiment 3

[0040] A corrosion-resistant nano-coating, expressed in weight percent, the raw materials of the corrosion-resistant nano-coating consist of: nano-scale titanium dioxide powder 30%, alumina micropowder 20%, silicon micropowder 5%, silicon carbide micropowder 5%, nitrogen 1% of boron powder, 30% of silica sol, 8% of kaolin with a particle size of 0.5-5 μm, 0.5% of sodium hexametaphosphate, and 0.5% of bentonite; plus water accounting for 20% of the total weight of the above raw materials.

[0041] The preparation method of the above-mentioned corrosion-resistant nano-coating is the same as that of Example 1.

[0042] The method of using the above-mentioned corrosion-resistant nano-coating is as follows: spraying the corrosion-resistant nano-coating on the surface of the substrate, drying it, and curing it at 600° C. for 1 hour.

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Abstract

The invention discloses corrosion-resistant nano-paint and a preparation method thereof. The corrosion-resistant nano-paint is prepared from, by weight, 30-40% of nanoscale titanium dioxide powder, 15-20% of alumina micro-powder, 5-10% of silica powder, 3-5% of silicon carbide micro-powder, 1-4% of boron nitride micro-powder, 20-30% of silica sol, 3-8% of kaolin, 0.2-0.5% of an additive, 0.5-0.8%of anti-settling agent and a solvent accounting for 20-30% of the total weight of the above-mentioned raw materials. The corrosion-resistant nano-paint is high in temperature resistance, corrosion resistance and oxidation resistance, and cracks or gaps are not likely to occur in the use process; in addition, the preparation method is easy to implement and low in requirement on equipment, industrial production is easy, and the paint has significant economic benefit.

Description

technical field [0001] The invention belongs to the technical field of coatings, and in particular relates to a corrosion-resistant nano coating and a preparation method thereof. Background technique [0002] High temperature resistant coatings are widely used in many industries such as petroleum, chemical industry, metallurgy, electric power, thermal power, machinery, construction, etc. Lining or surface, improve the high temperature performance of the equipment. In recent decades, with the increasing demand for high-temperature-resistant coatings in many industries, there have been more and more researches on high-temperature-resistant coatings at home and abroad. However, the existing high-temperature-resistant coatings are generally easy to oxidize under high-temperature conditions, have poor corrosion resistance, and are prone to cracks and peeling, resulting in short service life of high-temperature-resistant equipment. Therefore, it is urgent to study a coating with...

Claims

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Application Information

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IPC IPC(8): C09D1/00C09D5/08C09D7/61
CPCC09D1/00C09D5/08C09D5/18C09D7/61
Inventor 王发现刘鹏王巍王霄鑫李文超朱新雨
Owner 河南省锅炉压力容器安全检测研究院