Low-cost superhydrophobic surface treatment method of aluminum alloy

A superhydrophobic surface and treatment method technology, applied in the field of superhydrophobic surface treatment of aluminum alloys, can solve the problems of difficult hydrolysis and modification process, high toxicity of mercaptans, high cost, etc., and achieve good superhydrophobic performance, preparation process and all The effect of requiring simple equipment and reducing production costs
CN101982560BInactive Publication Date: 2012-09-19SOUTHEAST UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
SOUTHEAST UNIV
Publication Date
2012-09-19
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention provides a low-cost superhydrophobic surface treatment method of aluminum alloy, which comprises the following steps: (1) carrying out chemical etching on the surface of the aluminum alloy by utilizing hydrochloric acid aqueous solution with the mass-volume concentration of 70g / L-95g / L in water bath at the temperature of 30-50 DEG C for 3-6min; and (2) carrying out evaporation modification on the surface of the aluminum alloy by utilizing long chain fatty acid solution by an evaporation method, wherein, the long chain fatty acid comprises at least one of lauric acid and stearic acid, and the long chain fatty acid solution is prepared by dissolving fatty acid into an ethanol solvent based on the mass percent of 3wt.%-15wt.%. The evaporation method comprises the following steps: placing the long chain fatty acid solution and the aluminum alloy subject to chemical etching treatment in a sealed container; putting the sealed container in a chamber electric furnace, heating until the temperature of the mixture is up to 100-200 DEG C, and performing heat preservation for 1-3h; and taking out the aluminum alloy and placing the aluminum alloy in the chamber electric furnace again, curing at the temperature of 50-90 DEG C for 0.5-1.5h, and finally taking out the aluminum alloy, and carrying out air cooling on the aluminum alloy to obtain the aluminum alloy surface which has the advantages of good superhydrophobic characteristic and less possibility of being adhered to water drops.
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Description

technical field

[0001] The invention relates to a low-cost aluminum alloy super-hydrophobic surface treatment method. Background technique

[0002] Aluminum alloys are widely used in many fields due to their light weight, high specific strength, high thermal efficiency, moderate price, and easy processing. Superhydrophobic surfaces have attracted great attention worldwide, and have gradually become one of the hotspots in biomimetic nanomaterials technology. This surface has extremely important application prospects in many fields such as national defense, industrial and agricultural production, and daily life. For example, it can be applied to outdoor antennas in high snowfall areas to prevent snow accumulation to ensure smooth signal; it can be used in pipelines to prevent liquid from adhering to the pipeline wall; it can be used in water transportation vehicles to reduce water resistance and improve Travel speed; used in microfluidic devices to achieve low resistance to ...

Claims

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