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Production method of aluminum alloy bionic superhydrophobic surface

A super-hydrophobic surface and aluminum alloy surface technology, which is applied in the process of producing decorative surface effects, manufacturing microstructure devices, metal material coating processes, etc., can solve the problem of few applications and achieve the effect of enhancing hydrophobic performance

Active Publication Date: 2013-07-17
JILIN UNIV
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Problems solved by technology

However, the laser processing method can form a highly uniform micro-scale crater-like structure on the surface of the sample, which is rarely used.

Method used

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  • Production method of aluminum alloy bionic superhydrophobic surface
  • Production method of aluminum alloy bionic superhydrophobic surface
  • Production method of aluminum alloy bionic superhydrophobic surface

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Embodiment Construction

[0036] The specific content of the present invention and its implementation are further described below.

[0037] A method for preparing an aluminum alloy biomimetic superhydrophobic surface according to the present invention, first, carry out the design of the biomimetic surface of an aluminum alloy substrate:

[0038] Based on natural biological materials, the surface of the structural characteristics of the microstructure distribution of natural biological composite materials is designed on the aluminum alloy substrate.

[0039] Design of biomimetic superhydrophobic surface with aluminum alloy substrate:

[0040] Aluminum alloy has broad application prospects in modern industry because of its low density, excellent thermal and electrical conductivity, high specific strength and excellent castability, but its poor hydrophobicity on the metal surface largely restricts its application in the modern industry. Industrial applications. The invention can improve the surface hydr...

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Abstract

The invention relates to the technology of metal material surface modification, in particular to a production method of bionic superhydrophobic surface of an aluminum alloy base, and aims to improve hydrophobicity of the aluminum alloy surface. The production method includes: pre-processing, namely washing aluminum alloy with absolute ethyl alcohol; subjecting the surface of the aluminum alloy to laser processing to obtain a plurality of micro-scale crater structures on the surface of a sample; immersing the sample in chemical etching solution to change morphology features of the surface of the sample, keep the surface to contain chemical elements different from the base, and form micro-nano double-layer hierarchical structure on the surface of the aluminum alloy; and after reaction, placing the chemically etched aluminum alloy sample in DTS-bearing (dodecyltrichlorosilane-bearing) toluene solution for modification so that a low surface energy film gradually forms on the surface. Therefore, the surface of the aluminum alloy in the micro-nano double-layer hierarchical structure has typical biological super-hydrophobicity and has typical petal-effect adhesion.

Description

Technical field: [0001] The invention relates to a metal material surface modification technology, in particular to a method for preparing a bionic super-hydrophobic surface on an aluminum alloy substrate. Background technique: [0002] A large number of biological surfaces in nature have formed a natural and reasonable superhydrophobic structure after hundreds of millions of years of natural selection and evolution. The micro-nano-scale bilayer hierarchical structure and chemical composition of natural biological surfaces such as lotus leaves, rose petals, and marigolds exhibit excellent superhydrophobicity, and also endow them with self-cleaning and high adhesion, which is the famous " The typical phenomenon of "lotus leaf effect" and "petal effect". Therefore, these natural surface structures are often used as analog structures in engineering material design and fabrication. [0003] In recent years, the preparation of hydrophobic thin films of metallic materials has re...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B81C1/00C23F4/04C23F1/20
Inventor 刘燕刘金丹李淑一刘家安韩志武任露泉
Owner JILIN UNIV
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