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Preparation method for copper based super hydrophobic surface with condensation liquid droplet self-bounce characteristic

A super-hydrophobic surface, condensate technology, applied to special surfaces, devices for coating liquids on surfaces, coatings, etc., to achieve the effect of simple and easy operation

Inactive Publication Date: 2018-12-18
INST OF OCEANOLOGY - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there are many reports on the preparation of superhydrophobic surfaces on copper surfaces (such as CN107740148A, CN106757016A), but there are few reports on the direct preparation of superhydrophobic surfaces with self-bounce properties on copper surfaces.

Method used

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  • Preparation method for copper based super hydrophobic surface with condensation liquid droplet self-bounce characteristic
  • Preparation method for copper based super hydrophobic surface with condensation liquid droplet self-bounce characteristic
  • Preparation method for copper based super hydrophobic surface with condensation liquid droplet self-bounce characteristic

Examples

Experimental program
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Effect test

Embodiment 1

[0021] (1) Wash the surface of the copper substrate with ethanol and deionized water in sequence, and dry it with nitrogen gas for later use.

[0022] (2) Apply a constant DC current to the above-mentioned cleaned copper substrate in the electrolyte (wherein, the cleaned copper substrate is used as the cathode, and the platinum sheet is used as the anode), at 0.01A / cm 2 Under the current density, the electrodeposition treatment is performed for 300 seconds; wherein, the electrolyte is 1 mol of nickel chloride and 0.5 mol of boric acid added to each liter of aqueous solution containing ammonium chloride additive. The ammonium chloride additive concentration in the aqueous solution of the above-mentioned ammonium chloride additive is 1.5mol / L.

[0023] (3) The electrodeposited copper substrate was placed in a closed container containing 15 microliters of 1H,1H,2H,2H-perfluorodecyltriethoxysilane and heated for modification. The heating temperature was set to 120°C, and the heati...

Embodiment 2

[0026] (1) Wash the surface of the copper substrate with ethanol and deionized water in sequence, and dry it with nitrogen gas for later use.

[0027] (2) Apply a constant DC current to the above-mentioned cleaned copper substrate in the electrolyte (wherein, the cleaned copper substrate is used as the cathode, and the platinum sheet is used as the anode), at 0.01A / cm 2 Under the current density, the electrodeposition process lasts for 900 seconds; wherein, the electrolytic solution is 1 mol of nickel chloride and 0.5 mol of boric acid added to each liter of aqueous solution containing ammonium chloride additive. The ammonium chloride additive concentration in the aqueous solution of the above-mentioned ammonium chloride additive is 1.5mol / L.

[0028] (3) The electrodeposited copper substrate was placed in a closed container containing 15 microliters of 1H,1H,2H,2H-perfluorodecyltriethoxysilane and heated for modification. The heating temperature was set to 120°C, and the heat...

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Abstract

The invention relates to super hydrophobic surface preparation, in particular to a preparation method for a copper based super hydrophobic surface with a condensation liquid droplet self-bounce characteristic. According to the preparation method for the copper based super hydrophobic surface with the condensation liquid droplet self-bounce characteristic, a copper base body is subjected to electrodeposition treatment in an electrolyte solution containing nickel chloride, boric acid and ammonium chloride, then the copper base body is placed into a closed container containing perfluorinated silane for heating modification, and the super hydrophobic surface with the condensation liquid droplet self-bounce characteristic can be obtained on the copper base body after cooling. The preparation method for the copper based super hydrophobic surface with the condensation liquid droplet self-bounce characteristic is simple and easy to operate, expensive equipment is not needed, used reagents haveno environmental hazard, and the prepared super hydrophobic surface is expected to be applied in the fields of metal corrosion prevention, frost prevention and ice resistance, enhanced condensation heat transfer, self-cleaning and the like.

Description

technical field [0001] The invention relates to the preparation of a super-hydrophobic surface, in particular to a method for preparing a copper-based super-hydrophobic surface with self-bounce characteristics of condensed liquid droplets. Background technique [0002] In recent years, the superhydrophobic surface with "lotus leaf effect" (contact angle greater than 150°, rolling angle less than 10°) can take away pollutants such as dust attached to the surface with the rolling of droplets so that the surface remains It has potential application value in anti-icing, self-cleaning, anti-corrosion, etc. However, the detachment of droplets from superhydrophobic surfaces requires external forces such as wind and gravity. Recent studies have found that on some superhydrophobic surfaces, droplets caused by condensation can spontaneously bounce off the surface without relying on any external force during the merging process. The detachment behavior of droplets from superhydrophob...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25D3/12C25D5/48B05D1/00B05D5/08
CPCB05D1/60B05D5/08B05D2518/10C25D3/12C25D5/48
Inventor 王鹏张盾陈勇李天平
Owner INST OF OCEANOLOGY - CHINESE ACAD OF SCI
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