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Reparation method for zinc super-hydrophobic surface

A super-hydrophobic surface and zinc flake technology, which is applied in the coating process of metal materials, etc., can solve the problems of harsh preparation conditions for super-hydrophobic surfaces, obstacles to the application of super-hydrophobic surfaces, complex preparation processes, etc., and achieve simple equipment, wide application range, The effect of simple preparation process

Inactive Publication Date: 2014-12-10
CHINA UNIV OF PETROLEUM (EAST CHINA)
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

From the above documents and patents, it can be found that the current superhydrophobic surfaces generally have harsh preparation conditions, complex preparation processes, and special materials, which greatly hinder the application of superhydrophobic surfaces.

Method used

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  • Reparation method for zinc super-hydrophobic surface
  • Reparation method for zinc super-hydrophobic surface
  • Reparation method for zinc super-hydrophobic surface

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Embodiment Construction

[0025] The present invention will be further described below in conjunction with the embodiments. The following descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention to other forms. Changes to equivalent embodiments with equivalent changes. Any simple modifications or equivalent changes made to the above embodiments according to the technical essence of the present invention without departing from the solution content of the present invention fall within the protection scope of the present invention.

[0026] A method for preparing a zinc superhydrophobic surface, specifically completed by the following steps:

[0027] (1) configure hydrochloric acid aqueous solution, concentration is 1.5mol / L;

[0028] (2) Take a zinc sheet (Shanghai Ailiai Metal Material Co., Ltd.) with a thickness of about 2mm and a purity of 99.99% as the substrate, and polish the surface of the zinc sheet with metallographic sandpaper to...

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Abstract

The invention discloses a technology for preparing a zinc super-hydrophobic surface. The preparation method comprises the following steps: chemically etching a zinc sheet by virtue of hydrochloric acid to form a spherical rough structure on the surface of the zinc sheet; then, performing hydrothermal reaction to form a layer of uniform rod-shaped structure which is close to nanoscale on the surface of the spherical rough structure, wherein the rod-shaped structure is almost vertical to the surface of the zinc sheet; and finally, carrying out low-energy modification by using an absolute ethyl alcohol solution of perfluoro caprylic acid to obtain the super-hydrophobic surface with good lipophobicity. According to the preparation method, distilled water drops onto the chemically-modified zinc sheet surface to carry out contact angle measurement, wherein a contact angle of the zinc sheet surface and water is greater than 150 degrees, and a rolling angle is smaller than 10 degrees; and moreover, the surface has relatively good lipophobicity, and has a contact angle of 145.62 degrees with peanut oil.

Description

technical field [0001] The invention belongs to the field of hydrophobic surface preparation, and in particular relates to a method for preparing a zinc superhydrophobic surface. Background technique [0002] Surface wettability is an important characteristic of solid surfaces and is determined by both the microstructure and chemical composition of the solid surface. Therefore, there are two main methods to prepare hydrophobic or superhydrophobic surfaces: one is to construct a certain rough structure on the surface of low surface energy materials; the other is to cover a layer of low energy materials on the surface with rough structure. In recent years, bionic superhydrophobic surfaces have shown very important potential application value in daily life, industrial production, medicine and other fields, and have attracted extensive attention of relevant researchers. At present, the literature reports on the preparation of superhydrophobic surfaces mainly include: Steckl et ...

Claims

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Application Information

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IPC IPC(8): C23C22/60
Inventor 于思荣李好韩祥祥刘恩洋赵严
Owner CHINA UNIV OF PETROLEUM (EAST CHINA)
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