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Preparation method for abrasion resistant superhydrophobic surface

A super-hydrophobic surface, wear-resistant technology, applied in the direction of surface reaction electrolytic coating, electrolytic coating, coating, etc., can solve the problem of poor mechanical stability of super-hydrophobic surface, loss of surface super-hydrophobic properties, and microstructure susceptible to wear And damage and other problems, to achieve the effect of facilitating large-scale application, excellent mechanical stability, stable wear resistance and corrosion resistance

Inactive Publication Date: 2019-04-16
INST OF OCEANOLOGY - CHINESE ACAD OF SCI
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Problems solved by technology

[0003] However, when the superhydrophobic surface is subjected to mechanical friction, the microstructure of the surface is easily worn and damaged, which leads to the loss of superhydrophobic properties of the surface. The poor mechanical stability of the superhydrophobic surface has always limited its large-scale promotion in various fields. Therefore, how to prepare a superhydrophobic surface with excellent wear resistance has important practical significance.

Method used

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  • Preparation method for abrasion resistant superhydrophobic surface
  • Preparation method for abrasion resistant superhydrophobic surface
  • Preparation method for abrasion resistant superhydrophobic surface

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Embodiment 1

[0028] (1) Pretreatment of the surface of 5083 aluminum alloy: firstly, the 5083 aluminum alloy sample was ultrasonically cleaned in absolute ethanol and deionized water, and then polished with SiC sandpaper of 200, 400, 800, 1200, and 2000 in sequence matrix;

[0029] (2) Constant pressure anodization of oxalic acid aqueous solution: Dissolve oxalic acid in deionized water to prepare a 0.3mol / L electrolyte solution, and then place the sample in a two-electrode anodic oxidation system, in which 5083 aluminum alloy is used as the anode, and the platinum electrode is For the cathode, the reaction system was anodized under the condition of 40V constant voltage, and the sample was taken out after 10 minutes of reaction, and washed several times with deionized water and absolute ethanol respectively to remove the residual electrolyte solution;

[0030] (3) Molecular modification with low surface energy: prepare an ethanol solution of perfluorodecyltriethoxysilane with a concentrati...

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Abstract

The invention relates to the field of metal surface treatments and modifications, in particular to a preparation method for an abrasion resistant superhydrophobic surface. A surface-treated substrateis subjected to constant voltage anodization in an aqueous solution with an oxalic acid solution as an electrolyte solution, and then is subjected to low surface energy molecular modification and heattreatment after anodization, so that the abrasion-resistant superhydrophobic surface is formed on the surface of the substrate. The method has the advantages of simple preparation process, good repeatability, low cost and convenient wide promotion, and the obtained superhydrophobic surface has a contact angle reaching 164.7 DEG, has excellent properties of self-cleaning, abrasion resistance and corrosion resistance, and has broad application prospects in ocean corrosion and protection field.

Description

Technical field: [0001] The invention relates to the field of metal surface treatment and modification, in particular to a method for preparing an abrasion-resistant superhydrophobic surface. Background technique: [0002] As a special wettability state, superhydrophobic surfaces have received extensive attention in recent years. The typical Cassie-Baxter model contact of the surface solid-liquid-gas three-phase interface makes superhydrophobic materials self-cleaning, oil-water separation, and anti-fog on the surface. Anti-icing, fluid drag reduction, marine anti-corrosion and anti-fouling and other fields have shown good application potential. At present, most of the main methods for preparing superhydrophobic surfaces are based on the construction of surface micro-nano structures and low surface energy modification. [0003] However, when the superhydrophobic surface is subjected to mechanical friction, the microstructure of the surface is easily worn and damaged, which ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25D11/10C25D11/24
CPCC25D11/10C25D11/24
Inventor 张斌斌徐玮辰李红玲侯保荣
Owner INST OF OCEANOLOGY - CHINESE ACAD OF SCI
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