Preparing method for fine copper hydrophobic surface with wetting anisotropy

A super-hydrophobic surface, anisotropic technology, applied in the chemical field, can solve problems such as preparation difficulties, and achieve the effect of simple process, broad application prospects, and excellent anisotropic wetting performance.

Inactive Publication Date: 2017-05-31
JILIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the inherent properties of the metal itself, such as work hardening and high surface energy, make the preparation of anisotropic superhydrophobic surfaces on metal substrates more difficult than on polymer substrates.

Method used

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  • Preparing method for fine copper hydrophobic surface with wetting anisotropy
  • Preparing method for fine copper hydrophobic surface with wetting anisotropy
  • Preparing method for fine copper hydrophobic surface with wetting anisotropy

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] A method for preparing a pure copper superhydrophobic surface with corrosion resistance, comprising the following steps:

[0041] A. Preparation of plating solution: Prepare copper sulfate solution with a concentration of 300g / L as the main component of the plating solution, and add ammonium nitrate with a concentration of 40g / L, citric acid with a concentration of 5g / L, and citric acid with a concentration of 5g / L. Hexadecyltrimethylammonium bromide, adsorbed by activated carbon to remove impurities, and filtered to obtain a clear and transparent plating solution;

[0042] B. Pretreatment of copper foil: Polish the pure copper through 400-mesh, 800-mesh and 1500-mesh metallographic sandpaper in turn to mirror effect, clean it ultrasonically in acetone solution for 10 minutes, and then use absolute ethanol and deionized water to clean it. Remove oil and grease on the surface of pure copper;

[0043] C. Physical etching: mechanically etch the pretreated copper foil with...

Embodiment 2

[0048] A method for preparing a pure copper superhydrophobic surface with corrosion resistance, comprising the following steps:

[0049] A, preparation of plating solution: preparation concentration is 300g / L copper sulfate solution as the main component of plating solution, and adding ammonium nitrate concentration is 40g / L of ammonium nitrate, concentration is the citric acid of 5g / L and concentration is 5g / L Cetyltrimethylammonium bromide, adsorbed by activated carbon to remove impurities, and filtered to obtain a clear and transparent plating solution;

[0050] B. Pretreatment of copper foil: Polish the pure copper through 400-mesh, 800-mesh and 1500-mesh metallographic sandpaper in turn to mirror effect, clean it ultrasonically in acetone solution for 10 minutes, and then use absolute ethanol and deionized water to clean it. Remove oil and grease on the surface of pure copper;

[0051] C. Physical etching: use the tip of a stainless steel knife to mechanically etch the p...

Embodiment 3

[0056] A, the preparation of plating solution: preparation concentration is that 300g / L copper sulfate solution is used as the main component of plating solution, and successively add the ammonium nitrate that concentration is 40g / L, the citric acid that concentration is 5g / L and the decathin that concentration is 5g / L Hexaalkyltrimethylammonium bromide, adsorbed by activated carbon to remove impurities, and filtered to obtain a clear and transparent plating solution;

[0057] B. Pretreatment of copper foil: Polish the pure copper through 400-mesh, 800-mesh and 1500-mesh metallographic sandpaper in turn to mirror effect, clean it ultrasonically in acetone solution for 10 minutes, and then use absolute ethanol and deionized water to clean it. Remove oil and grease on the surface of pure copper;

[0058] C. Physical etching: use the tip of a stainless steel knife to mechanically etch the parallel groove structure on the pretreated copper foil. The width of the groove is 100 μm a...

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Abstract

The invention relates to a preparing method for a fine copper hydrophobic surface with wetting anisotropy. According to the method, copper sulfate serves as plating solution main salt, copper foil is pretreated so that surface oil dirt and grease can be removed; then the pretreated copper foil is etched through a physical etching method; then brush plating treatment is conducted; and finally, the copper foil is then put into an ethanol solution of dodecylthiol to be soaked, a super-hydrophobic film is generated on the coarse surface of fine copper in a self-assembling manner, then washing and drying are conducted, and the fine copper hydrophobic surface with a micron, sub-micron and nanometer three-grade graded structure is finally obtained. The prepared super-hydrophobic surface structure is very similar to a rice leaf surface structure and has the anisotropic wetting performance achieved on the surface of a rice leaf. The preparing method is relatively novel and simple in technology, the structure is relatively easy to control, the cost is relatively low, and a very wide application prospect is achieved.

Description

technical field [0001] The invention belongs to the field of chemical industry and relates to a pure copper super-hydrophobic surface technology, in particular to a preparation method of a pure copper super-hydrophobic surface with wetting anisotropy. Background technique [0002] Superhydrophobic phenomena are very common in nature, such as insect wings and plant leaves. Droplets cannot wet the surface, but can only roll off the surface and take away the dust and pollutants on the surface. Inspired by this phenomenon, researchers have seen the potential application value of superhydrophobic materials in the fields of anti-fog, fluid drag reduction and self-cleaning, and more and more superhydrophobic materials have been prepared. [0003] Wetting anisotropy is a special superhydrophobic surface wetting property, such as the wetting behavior of water droplets on butterfly wings and rice leaves. The study found that the anisotropic wetting properties of rice leaves can direc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25D5/06C25D5/34C25D5/48C25D3/38
CPCC25D5/06C25D3/38C25D5/34C25D5/48
Inventor 李天杨培学江月江忠浩连建设刘绍成张腊双孙巍铭
Owner JILIN UNIV
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