High-temperature-resistant anti-oxidation inorganic coating and preparation method thereof

An inorganic coating and anti-oxidation technology, applied in the direction of coating, etc., can solve the problems of poor high temperature resistance, falling off, and reducing the high temperature anti-oxidation effect.

Pending Publication Date: 2022-01-11
三棵树(上海)新材料研究有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the main problem of high-temperature anti-oxidation coatings is that the high-temperature resistance effect

Method used

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  • High-temperature-resistant anti-oxidation inorganic coating and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Adjust the rotation speed to 300 rpm, add 10 parts of water, 0.1 part of hydroxyethyl cellulose, 0.6 part of water-based dispersant, 0.3 part of water-based wetting agent, 0.2 part of water-based defoamer, and stir for 1 minute until the cellulose thickens significantly;

[0021] Add 20 parts of silica sol and 1.0 part of bentonite, and stir for 5 minutes until the dispersion is uniform and transparent;

[0022] Then add 25 parts of alumina, 15 parts of boron carbide, 7.5 parts of mica powder, and 2 parts of calcined kaolin, increase the speed to 1500 rpm, and disperse for 15 minutes until the powder is evenly dispersed in the system;

[0023] Adjust the rotating speed to 500rpm, add 20 parts of silica sol and 0.3 parts of water resistant agent in sequence, and continue stirring for 5-10 minutes to obtain the finished product.

Embodiment 2

[0025] Adjust the rotation speed to 300rpm, add 20 parts of water, 0.4 part of hydroxyethyl cellulose, 0.5 part of water-based dispersant, 0.4 part of water-based wetting agent, 0.1 part of water-based defoamer, and stir for 1 minute until the cellulose thickens significantly;

[0026] Add 20 parts of silica sol and 0.2 parts of bentonite, and stir for 5 minutes until the dispersion is uniform and transparent;

[0027] Then add 20 parts of alumina, 11 parts of boron carbide, 9 parts of mica powder, and 8 parts of calcined kaolin, increase the speed to 1500 rpm, and disperse for 15 minutes until the powder is evenly dispersed in the system;

[0028] Adjust the rotation speed to 500rpm, add 10 parts of silica sol and 0.4 parts of water resistant agent in sequence, and continue stirring for 5-10 minutes to obtain the finished product.

Embodiment 3

[0030] Adjust the rotation speed to 300rpm, add 5 parts of water, 0.3 parts of hydroxyethyl cellulose, 0.4 parts of water-based dispersant, 0.3 parts of water-based wetting agent, and 0.3 parts of water-based defoamer, and stir for 1 minute until the cellulose thickens significantly;

[0031] Add 20 parts of silica sol and 0.4 parts of bentonite, and stir for 5 minutes until the dispersion is uniform and transparent;

[0032] Then add 30 parts of alumina, 7 parts of boron carbide, 6 parts of mica powder, and 5 parts of calcined kaolin, increase the speed to 1500 rpm, and disperse for 15 minutes until the powder is evenly dispersed in the system;

[0033] Adjust the rotation speed to 500rpm, add 30 parts of silica sol and 0.3 parts of water resistant agent in sequence, and continue stirring for 5-10 minutes to obtain the finished product.

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Abstract

The invention relates to a high-temperature-resistant anti-oxidation inorganic coating and a preparation method thereof. The coating is prepared from the following components in parts by mass: 5 to 20 parts of water, 0.1 to 0.4 part of hydroxyethyl cellulose, 0.4 to 0.6 part of a water-based dispersing agent, 0.2 to 1 part of a water-based thickening agent, 0.3 to 0.4 part of a water-based wetting agent, 0.1 to 0.3 part of a water-based defoaming agent, 0.3 to 0.4 part of a water-resistant agent, 0.2 to 1 part of bentonite, 7 to 15 parts of boron carbide, 20 to 30 parts of aluminum oxide, 6 to 9 parts of mica powder, 2 to 8 parts of calcined kaolin and 30 to 50 parts of silica sol. The inorganic silica sol is adopted as a film forming substance, and aluminum oxide and boron carbide are matched to serve as main filler, so that the prepared coating has excellent compactness and adhesive force, does not crack or fall off at high temperature, and can effectively protect substrate steel from being oxidized.

Description

technical field [0001] The invention relates to a high-temperature-resistant and anti-oxidation inorganic coating and a preparation method thereof. Background technique [0002] Iron and steel are prone to surface oxidation and peeling during high temperature treatment. This characteristic causes the steel structure to suffer different degrees of steel loss during the forging process. The oxide layer that falls off is not only difficult to recycle, but also pollutes the quenching medium. For steel structures used in different high-temperature fields, high-temperature oxidation also greatly reduces their service life. In order to improve the high-temperature anti-oxidation effect of steel structures, high-temperature anti-oxidation coatings have been widely researched and applied due to their low cost and simple operation in recent years. At present, the main problem of high-temperature anti-oxidation coatings is that the poor high-temperature resistance effect leads to cra...

Claims

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Application Information

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IPC IPC(8): C09D1/00C09D7/61
CPCC09D1/00C09D7/61
Inventor 脱金芹杨鹏飞秦玉猛
Owner 三棵树(上海)新材料研究有限公司
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