A kind of aluminum alloy surface hydrophobic treatment process

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., and achieve enhanced hydrophobicity, improved contact angle, and corrosion resistance. improved effect

Active Publication Date: 2021-11-16
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 a surface hydrophobic treatment process of aluminum alloy, comprising the following steps: (1) soaking in ethanol solution; (2) soaking in sodium hydroxide solution; (3) heating and heat preservation; (4) obtaining pre-modified aluminum alloy (5) The pre-modified aluminum alloy plate obtained above is subjected to nanosecond laser hierarchical treatment; through the synergistic effect of the various steps of the treatment in the present invention, a well-defined hydrophobic micro-nano structure can be constructed on the surface of the treated aluminum alloy. The contact angle of the aluminum alloy surface treated by the invention is greatly improved, the hydrophobicity of the aluminum alloy surface is obviously enhanced, and the corrosion resistance of the aluminum alloy surface treated by the invention is improved to a certain extent.

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 Patents(China)
IPC IPC(8): B23K26/60B23K26/352
Inventor 刘斌傅明华陈于刘珍
Owner 重庆新西亚铝业(集团)股份有限公司
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