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Super-hydrophobic metal surface coating and preparing method thereof

A metal surface, super-hydrophobic technology, applied in the direction of metal material coating process, etc., can solve the problems of high price, long weaving time, high toxicity, etc., and achieve the effect of safe preparation method, good anti-corrosion performance, and uniform thickness

Active Publication Date: 2019-03-26
LUDONG UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] At present, fluorine-containing fatty acids or fluorine-containing fatty acid salts are generally used to weave superhydrophobic coatings on metal surfaces, but due to the high toxicity and high price of fluorine-containing fatty acids or fluorine-containing fatty acid salts, they are not suitable for popularization and application.
However, fatty acids are soaked in ethanol solution or fatty acids are dissolved in alkali to weave super-hydrophobic coatings on the metal surface. In industrial production, the weaving time of the above-mentioned process is relatively long, usually several days, and ethanol has a great potential safety hazard; The process will generate a lot of heat, which is not conducive to mass production

Method used

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  • Super-hydrophobic metal surface coating and preparing method thereof
  • Super-hydrophobic metal surface coating and preparing method thereof
  • Super-hydrophobic metal surface coating and preparing method thereof

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preparation example Construction

[0031] On the one hand, the embodiments of the present invention provide a method for preparing a superhydrophobic metal surface coating, comprising the following steps:

[0032] S01, etching, cleaning and drying the metal in sequence;

[0033] S02, the dried metal is soaked in the fatty acid salt solution, and the surface of the metal is covered with a fatty acid salt coating;

[0034] S03. Cleaning and drying the metal covered with the fatty acid salt coating in sequence to obtain a super-hydrophobic metal surface coating.

[0035] In the embodiment of the present invention, the etched, cleaned, and dried metal is soaked in the fatty acid salt solution, and the metal reacts with oxygen in the fatty acid salt solution to form a metal oxide, and the hydrogen ion ionized by the water in the fatty acid salt solution, React with metal oxides to generate metal cations, metal cations and fatty acid anions can form new fatty acid salts through coordination, new fatty acid salts gro...

Embodiment 1

[0064] S101, add sodium laurate into water, heat and dissolve at 50°C, and prepare a 10mmol / L sodium laurate aqueous solution;

[0065] S102. Take out the copper and ultrasonically clean it in absolute ethanol for 10 minutes to remove oil stains; then place the copper in hydrochloric acid with a mass fraction of 15% and ultrasonically clean it for 10 minutes to remove rust stains;

[0066] S103 , cleaning the rust-removed copper with water and absolute ethanol in sequence, and drying with nitrogen.

[0067] S104. Place the copper cleaned and dried in step S103 in the 10 mmol / L sodium laurate aqueous solution prepared in S101, and soak at 25° C. for 3 hours.

[0068] S105, taking out the copper soaked in step S104, washing with water and absolute ethanol in sequence, and drying with nitrogen to obtain a super-hydrophobic metal surface coating.

[0069] refer to Figure 1 to Figure 7 , The superhydrophobic metal coating prepared in Example 1 was characterized and analyzed.

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Abstract

The invention belongs to the technical field of function materials, and particularly relates to a super-hydrophobic metal surface coating and a preparing method thereof. The preparing method of the super-hydrophobic metal surface coating comprises the following steps of etching, cleaning and drying of metal in sequence, soaking the dried metal in a fatty acid salt solution, and covering the metalsurface with the fatty acid salt coating; cleaning and drying the metal covered with the fatty acid salt coating in sequence, and obtaining the super-hydrophobic metal surface coating; and the preparing method is safe, and rapid in response, and the prepared super-hydrophobic metal surface coating is uniform in thickness and good in anti-corrosion property.

Description

technical field [0001] The invention belongs to the technical field of functional materials, in particular to a superhydrophobic metal surface coating and a preparation method thereof. Background technique [0002] Metals play an indispensable role in daily life, but the corrosion of metals has brought huge economic losses. Covering the metal surface with a hydrophobic coating can achieve the purpose of modifying and protecting the metal surface. Fatty acid is an inexpensive surfactant with high surface activity. The -COOH group in the fatty acid molecule can interact with ions on the metal surface, and its hydrophobic chain can repel water. Thus, metals with fatty acid coatings are superhydrophobic and work well against corrosion. [0003] At present, fluorine-containing fatty acids or fluorine-containing fatty acid salts are generally used to weave superhydrophobic coatings on metal surfaces, but due to the high toxicity and high price of fluorine-containing fatty acids...

Claims

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Application Information

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IPC IPC(8): C23C22/48
CPCC23C22/48
Inventor 徐文龙张宗正李正浩张少华薛众鑫
Owner LUDONG UNIVERSITY