Inorganic corrosion-resistant coating and preparation method thereof

A corrosion-resistant coating and corrosion-resistant technology, used in coatings, anti-corrosion coatings, etc., can solve problems such as peeling, embrittlement, failure, etc., and achieve the effect of enhancing bond strength, increasing spray thickness, and avoiding foaming

Active Publication Date: 2020-12-11
中国南方电网有限责任公司超高压输电公司柳州局
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the coating can only be sprayed with a thickness of less than 100 μm, and the hardness and corrosion resistance are not enough. If the coating thickness is greater than 100 μm, there will be problems of blistering, peeling, embrittlement and failure, and the protective effect on metal fittings cannot be guaranteed.

Method used

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  • Inorganic corrosion-resistant coating and preparation method thereof
  • Inorganic corrosion-resistant coating and preparation method thereof

Examples

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Effect test

Embodiment 1

[0027] This embodiment provides an inorganic corrosion-resistant coating, comprising the following raw materials in weight percentage: 15% aluminum dihydrogen phosphate, 25% nano-zirconium sol, 20% chromium trioxide, 12% nano-alumina powder, and nano-silicon oxide powder 18%, nano titanium powder 5% and nano magnesium oxide powder 5%.

[0028] Wherein, the aluminum dihydrogen phosphate comprises the following raw materials in weight percent: P 2 o 5 63% and Al 2 o 3 37%; the weight percent of zirconia in the nano-zirconium sol is 15%; the particle diameter of the nano-zirconium sol is 90nm; the average particle diameter of the nano-alumina powder is 300nm; The particle diameter is 280nm; the average particle diameter of the nano titanium powder is 95nm; the average particle diameter of the nano magnesium oxide powder is 98nm.

[0029] This embodiment also provides a method for preparing an inorganic corrosion-resistant coating, including the following methods and steps:

...

Embodiment 2

[0035] This embodiment provides an inorganic corrosion-resistant coating, comprising the following raw materials in weight percentage: 18% aluminum dihydrogen phosphate, 12% nano-zirconium sol, 50% chromium trioxide, 7% nano-alumina powder, and nano-silicon oxide powder 9%, nano titanium powder 2% and nano magnesium oxide powder 2%.

[0036] Wherein, the aluminum dihydrogen phosphate comprises the following raw materials in weight percent: P 2 o 5 84% and Al 2 o 3 16%; the weight percentage of zirconia in the nano-zirconium sol is 16%; the particle diameter of the nano-zirconium sol is 85nm; the average particle diameter of the nano-alumina powder is 350nm; The particle diameter is 300nm; the average particle diameter of the nano titanium powder is 90nm; the average particle diameter of the nano magnesium oxide powder is 95nm.

[0037] This embodiment also provides a method for preparing an inorganic corrosion-resistant coating, including the following methods and steps: ...

Embodiment 3

[0043] This embodiment provides an inorganic corrosion-resistant coating, comprising the following raw materials in weight percentage: 21% aluminum dihydrogen phosphate, 50% nano-zirconium sol, 13% chromium trioxide, 6% nano-alumina powder, and nano-silicon oxide powder 8%, nano titanium powder 1% and nano magnesium oxide powder 1%.

[0044] Wherein, the aluminum dihydrogen phosphate comprises the following raw materials in weight percent: P 2 o 5 71%, Al 2 o 3 28.98% and Fe 2 o 3 0.02%; the percentage by weight of zirconia in the nano-zirconium sol is 18%; the particle diameter of the nano-zirconium sol is 80nm; the average particle diameter of the nano-alumina powder is 260nm; The particle diameter is 320nm; the average particle diameter of the nano titanium powder is 80nm; the average particle diameter of the nano magnesium oxide powder is 85nm.

[0045] This embodiment also provides a method for preparing an inorganic corrosion-resistant coating, including the follow...

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Abstract

The invention provides an inorganic corrosion-resistant coating. The inorganic corrosion-resistant coating is prepared from the following raw materials: aluminum dihydrogen phosphate, nano zirconium sol, chromium trioxide, deionized water, nano aluminum oxide powder, nano silicon oxide powder, nano titanium powder and nano magnesium oxide powder. The invention also provides a preparation method ofthe inorganic corrosion-resistant coating. A thick thickness can be sprayed, the problems of bubbling, falling, embrittlement, failure and the like are avoided while the hardness and the corrosion resistance are good, and a good protection effect on the hardware fitting is ensured.

Description

technical field [0001] The invention relates to the technical field of inorganic coatings, in particular to an inorganic corrosion-resistant coating and a preparation method thereof. Background technique [0002] The protection of high-altitude power materials is very important to ensure the safety of power transmission. Human production activities have caused an increase in corrosive gases in the atmosphere, including H2S, SO2, and chlorides, which will have a great impact on power metal materials (fittings, towers, wires) at a height of tens to hundreds of meters. Large destructive effect; especially the metal fittings have many corners, pores and other structures, which correspond to a large specific surface area, so two kinds of localized corrosion, crevice corrosion and contact corrosion, are prone to occur; and the friction and collision caused by the small movement of the fittings will accelerate the corrosion effect and wear, the surface coating technology is an imp...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D1/00C09D5/08C09D7/61
CPCC09D1/00C09D5/08C09D7/61C09D7/67C09D7/68
Inventor 何学敏黄松强孙阔腾宁淼福陈载坚郭宝源莫柳军姚良吕小辉方守刚
Owner 中国南方电网有限责任公司超高压输电公司柳州局
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