Aluminum alloy surfacehydrophobic treatment technology

A technology of aluminum alloy surface and hydrophobic treatment, applied in the field of aluminum alloy, can solve the problems of general hydrophobicity of aluminum alloy surface, limited improvement effect, unable to meet the needs of the market, etc., to achieve enhanced hydrophobicity, improved contact angle, and corrosion resistance. improved effect

Active Publication Date: 2019-06-11
重庆新西亚铝业(集团)股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] With the rapid development of science and technology and industrial economy, the demand for the performance of aluminum alloy materials is increasing day by day. The existing aluminum alloy surface has general hydrophobicity and cannot meet the needs of the market.
[0004] Surface treatment technology is to change the morphology, chemical composition and structure of the metal surface through various methods or approaches, and improve the surface performance of metal materials to meet market demand. However, when the existing surface treatment technology treats the surface of aluminum alloy, although it can Improve the surface hydrophobicity of aluminum alloy to a certain extent, but the improvement effect is limited

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] A process for hydrophobic treatment of aluminum alloy surface, comprising the following steps:

[0023] (1) Soak the aluminum alloy plate in an ethanol solution with a mass fraction of 60% for 30 minutes, then filter, wash, and dry to constant weight;

[0024] (2) Put the aluminum alloy plate after the above treatment into clean water, heat to 80°C, keep warm, add sodium hydroxide to the clean water, adjust the pH to 11.2, keep stirring for 35 minutes, then filter, wash, and dry to constant weight;

[0025] (3) Heat the aluminum alloy plate after the above treatment to 305°C in a nitrogen atmosphere, keep it warm for 40 minutes, and then cool it naturally to room temperature;

[0026] (4) Put the aluminum alloy plate after the above treatment into the ethanol solution, add hydroxyacetophenone and p-hydroxybenzaldehyde in sequence to the ethanol solution, stir well, then add concentrated hydrochloric acid dropwise, under the protection of nitrogen atmosphere, 90 ℃ wate...

Embodiment 2

[0036] A process for hydrophobic treatment of aluminum alloy surface, comprising the following steps:

[0037] (1) Soak the aluminum alloy plate in an ethanol solution with a mass fraction of 65% for 30-40 minutes, then filter, wash, and dry to constant weight;

[0038] (2) Put the aluminum alloy plate after the above treatment into clean water, heat to 80°C, keep warm, add sodium hydroxide to the clean water, adjust the pH to 11.5, keep stirring for 35min, then filter, wash, and dry to constant weight;

[0039] (3) Heat the aluminum alloy plate after the above treatment to 315°C in a nitrogen atmosphere, keep it warm for 40 minutes, and then cool it naturally to room temperature;

[0040] (4) Put the above treated aluminum alloy plate into the ethanol solution, add hydroxyacetophenone and p-hydroxybenzaldehyde in sequence to the ethanol solution, stir well, then add concentrated hydrochloric acid dropwise, under the protection of nitrogen atmosphere, 92 ℃ water bath, react ...

Embodiment 3

[0050] A process for hydrophobic treatment of aluminum alloy surface, comprising the following steps:

[0051] (1) Soak the aluminum alloy plate in an ethanol solution with a mass fraction of 62% for 35 minutes, then filter, wash, and dry to constant weight;

[0052] (2) Put the above treated aluminum alloy plate into clean water, heat to 80°C, keep warm, add sodium hydroxide to the clean water, adjust the pH to 11.3, keep stirring for 35 minutes, then filter, wash, and dry to constant weight;

[0053] (3) Heat the aluminum alloy plate after the above treatment to 308°C in a nitrogen atmosphere, keep it warm for 40 minutes, and then cool it naturally to room temperature;

[0054] (4) Put the above treated aluminum alloy plate into the ethanol solution, add hydroxyacetophenone and p-hydroxybenzaldehyde in sequence to the ethanol solution, stir well, then add concentrated hydrochloric acid dropwise, under the protection of nitrogen atmosphere, 91 Under heat preservation in a w...

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Abstract

The invention discloses an aluminum alloy surface hydrophobic treatment technology. The aluminum alloy surface hydrophobic treatment technology comprises the following steps that (1) soaking in an ethanol solution is conducted; (2) soaking in an sodium hydroxide solution is conducted; (3) heating and temperature conserving are conducted; (4) a pre-modified aluminum plate is obtained; and (5) nanosecond laser level processing is conducted on the obtained pre-modified aluminum plate. According to the aluminum alloy surface hydrophobic treatment technology, by the cooperative function processed by all steps, a hydrophobic micro-nano structure with a clear level can be established on the processed aluminum alloy surface, the contacting angle of the processed aluminum alloy surface is greatly increased, the hydrophobic performance of the aluminum alloy surface can be greatly improved, and the corrosion resistant performance of the processed aluminum alloy surface can be improved to a certain extend.

Description

technical field [0001] The invention belongs to the field of aluminum alloys, and in particular relates to a surface hydrophobic treatment process for aluminum alloys. Background technique [0002] Aluminum alloy is the most widely used non-ferrous metal structural material in industry, and is widely used in aviation, aerospace, automobile, machinery manufacturing, and chemical industry. [0003] With the rapid development of science and technology and industrial economy, the demand for the properties of aluminum alloy materials is increasing day by day. The existing aluminum alloy surfaces have general hydrophobic properties and cannot meet the needs of the market. [0004] Surface treatment technology is to change the morphology, chemical composition and structure of the metal surface through various methods or approaches, and improve the surface performance of metal materials to meet market demand. However, when the existing surface treatment technology treats the surface...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K26/60B23K26/352
Inventor 刘珍
Owner 重庆新西亚铝业(集团)股份有限公司
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