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Method for carrying out superhydrophobic on surface of metal

A metal surface, superphobic technology, applied in the direction of electrolytic organic material coating, etc., can solve the problems of restricting the large-area preparation and industrial application of superhydrophobic film layer, cumbersome operation process, unfriendly environment, etc. Cumbersome operation, environmentally friendly effect

Inactive Publication Date: 2018-07-24
INST OF OCEANOLOGY - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The currently reported methods for achieving superhydrophobicity on metal surfaces mainly include chemical etching, laser method, anodic oxidation method, hydrothermal method, sol-gel method, etc. However, most of the preparation techniques require tedious operations, Expensive reagents, unfriendly environment, time-consuming and labor-intensive, thus greatly restricting the large-area preparation and industrial application of super-hydrophobic membranes

Method used

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  • Method for carrying out superhydrophobic on surface of metal
  • Method for carrying out superhydrophobic on surface of metal
  • Method for carrying out superhydrophobic on surface of metal

Examples

Experimental program
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Effect test

Embodiment 1

[0023] (1) Substrate pretreatment: The aluminum alloy substrate was ultrasonically cleaned with deionized water and absolute ethanol respectively, and dried for later use.

[0024] (2) Superhydrophobic treatment: with manganese chloride MnCl 2 and myristic acid CH 3 (CH 2 ) 12 The ethanol solution of COOH is the electrolyte solution, wherein the concentration of manganese chloride in the ethanol solution is 0.05mol / L, the concentration of myristic acid in the ethanol solution is 0.1mol / L, and the cathode one-step electrodeposition method is used to deposit aluminum as the cathode. The alloy substrate and the platinum electrode as the anode were applied with a DC voltage of 30V. After 1 min of treatment, a brown manganese fatty acid film appeared on the surface. After being rinsed with ethanol and dried, the super-hydrophobic film was obtained.

[0025] Detect the substrate surface contact angle after the above treatment by the contact angle measuring instrument sessile drop...

Embodiment 2

[0027] (1) Substrate pretreatment: ultrasonically clean the zinc substrate with deionized water and absolute ethanol respectively, and dry it for later use.

[0028] (2) Superhydrophobic treatment: with cerium nitrate Ce(NO 3 ) 3 and palmitic acid CH 3 (CH 2 ) 14 The ethanol solution of COOH is the electrolyte, wherein the concentration of cerium nitrate in the ethanol solution is 0.02mol / L, and the concentration of palmitic acid in the ethanol solution is 0.2mol / L. The cathode one-step electrodeposition method is used to treat the zinc substrate as the cathode and the zinc substrate as the cathode. A 10V direct current voltage was applied to the platinum electrode of the anode, and after 20 minutes of treatment, a white fatty acid cerium film appeared on the surface, which was rinsed with ethanol and dried to obtain a super-hydrophobic film.

[0029] Detect the substrate surface contact angle after the above treatment by the contact angle measuring instrument sessile drop...

Embodiment 3

[0031] (1) Substrate pretreatment: The magnesium alloy substrate is ultrasonically cleaned with deionized water and absolute ethanol respectively, and dried for later use.

[0032] (2) Superhydrophobic treatment: with ferric chloride FeCl 3 and myristic acid CH 3 (CH 2 ) 16 The ethanol solution of COOH is the electrolyte solution, wherein the concentration of ferric chloride in the ethanol solution is 0.001mol / L, and the concentration of myristic acid in the ethanol solution is 0.005mol / L. The cathode one-step electrodeposition method is used to deposit magnesium as the cathode. The alloy substrate and the platinum electrode as the anode were applied with a DC voltage of 20V, and after 30 minutes of treatment, a fatty acid iron film layer appeared on the surface, which was rinsed with ethanol and dried to obtain a super-hydrophobic film layer.

[0033] Detect the substrate surface contact angle after the above treatment by the contact angle measuring instrument sessile drop...

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Abstract

The invention relates to a preparation technology of superhydrophobic film layers, in particular to a simple method for carrying out superhydrophobic the surface of metal. A treated substrate is subjected to a one-step cathode electrodeposition method in an ethanol solution containing fatty acid and inorganic salt, and the surface of the substrate is covered with a fatty acid salt film layer, so that the superhydrophobic on the surface of the metal is realized. The method provided by the invention is environmentally friendly, simple and easy to operate and low in cost; the prepared superhydrophobic film layer is expected to be widely applied to the fields such as marine corrosion protection, microbial adhesion resistance, anti-icing and self-cleaning.

Description

technical field [0001] The invention relates to a preparation technology of a superhydrophobic film layer, in particular to a convenient method for realizing superhydrophobicity of a metal surface. Background technique [0002] Wettability is one of the important properties of the surface of solid materials. Since the late 1990s, inspired by the characteristics of the surface and interface of natural organisms, the construction of bionic superhydrophobic surfaces has attracted great attention from researchers at home and abroad. Research on the surface shows that the superhydrophobic surface with excellent water repellency not only has good self-cleaning ability, but also shows broad application prospects in the fields of oil-water separation, anti-icing and anti-frost, corrosion resistance and anti-fouling, and fluid drag reduction. [0003] Obtaining a certain surface roughness and low surface energy organic molecular modification through the construction of binary hierar...

Claims

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Application Information

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IPC IPC(8): C25D9/02
CPCC25D9/02
Inventor 张斌斌蒋全通李言涛段继周侯保荣
Owner INST OF OCEANOLOGY - CHINESE ACAD OF SCI
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