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Preparation method for surface-wettability-controllable super-hydrophobic copper and alloy thereof

A technology of surface infiltration and copper alloy, which is applied to the surface coating liquid device, special surface, surface reaction electrolytic coating, etc., can solve the problems of potential safety hazards, high cost, and limited promotion, etc., to shorten the preparation cycle, The effect of controllable wettability

Active Publication Date: 2017-06-13
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it requires high-temperature calcination and the participation of strong acid, which has potential safety hazards, complicated processing procedures, high cost and poor environmental protection performance, which seriously limits the promotion of this method.

Method used

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  • Preparation method for surface-wettability-controllable super-hydrophobic copper and alloy thereof
  • Preparation method for surface-wettability-controllable super-hydrophobic copper and alloy thereof
  • Preparation method for surface-wettability-controllable super-hydrophobic copper and alloy thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] A red copper sheet with a size of 50×30 is electro-deposited after surface pretreatment and self-assembled with myristic acid to obtain a super-hydrophobic surface with outstanding structural features, specifically including the following steps and process conditions:

[0033] (1) Copper sheet pretreatment: ultrasonically clean the copper sheet with acetone, alcohol, and deionized water for 5 minutes at room temperature, and blow dry with a hair dryer to remove oil and impurities on the surface;

[0034] (2) Plating solution configuration: dissolve thiourea and disodium edetate in deionized water, wherein the concentration of thiourea is 0.05mol / L, and the concentration of disodium edetate is 0.01mol / L;

[0035] (3) Electrodeposition: take two pretreated copper sheets as two poles of alternating current respectively, take 100ml of the electroplating solution prepared in step (2) and conduct electrodeposition for 5min under the condition of alternating current voltage 5V,...

Embodiment 2

[0040] A brass sheet with a size of 50×30 is electro-deposited after surface pretreatment and self-assembled with myristic acid to obtain a super-hydrophobic surface with outstanding structural features, specifically including the following steps and process conditions:

[0041] (1) Copper sheet pretreatment: ultrasonically clean the brass sheet with acetone, alcohol, and deionized water for 10 minutes at room temperature, and blow dry with a hair dryer to remove oil and impurities on the surface;

[0042] (2) Plating solution configuration: dissolve thiourea and disodium edetate in deionized water, wherein the concentration of thiourea is 0.3mol / L, and the concentration of disodium edetate is 0.2mol / L;

[0043] (3) Electrodeposition: take two pretreated copper sheets as two poles of alternating current respectively, take 100ml of the electroplating solution prepared in step (2) and conduct electrodeposition for 10min under the condition of alternating current voltage 20V, and ...

Embodiment 3

[0048]Phosphor copper sheets with a size of 50×30 are electro-deposited after surface pretreatment and self-assembled with myristic acid to obtain a super-hydrophobic surface with outstanding structural features, specifically including the following steps and process conditions:

[0049] (1) Copper sheet pretreatment: ultrasonically clean the phosphor copper sheet with acetone, alcohol, and deionized water for 2 minutes at room temperature, and blow dry with a hair dryer to remove oil and impurities on the surface;

[0050] (2) Plating solution configuration: dissolve thiourea and disodium edetate in deionized water, wherein the concentration of thiourea is 0.2mol / L, and the concentration of disodium edetate is 0.5mol / L;

[0051] (3) Electrodeposition: take two pretreated copper sheets as the poles of alternating current, take 100ml of the electroplating solution prepared in step (2) and conduct electrodeposition for 2min under the condition of AC voltage 40V, and the temperatu...

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Abstract

The invention belongs to the technical field of metal material surface treatment and discloses a preparation method for surface-wettability-controllable super-hydrophobic copper and an alloy thereof. The preparation method comprises copper or a copper alloy slice is placed in an aqueous solution containing thiocarbamide and disodium edetate dihydrate after pretreating, an electrodeposition reaction is conducted, and a super-hydrophilic surface with a rough structure is obtained; then the copper or the copper alloy slice is placed in an ethanol solution with tetradecanoic acid to be soaked, and the super-hydrophobic copper or a super-hydrophobic copper alloy of which the surface is subjected to self-assembly to generate a super-hydrophobic film is obtained; and the super-hydrophobic copper or the super-hydrophobic copper alloy is annealed for 5-20 min at the temperature of 250-400 DEG C and soaked in the ethanol solution with the tetradecanoic acid, and the surface-wettability-controllable super-hydrophobic copper and the alloy thereof are obtained. The surface wettability of the copper and the alloy thereof is controllable, the process of hydrophobic transformation can be rapidly finished, and an efficient and environmental-friendly method is provided for industrialized, rapid and large-area production of the super-hydrophilic metal surface.

Description

technical field [0001] The invention belongs to the technical field of metal material surface treatment, in particular to a method for preparing superhydrophobic copper and its alloys with controllable surface wettability. Background technique [0002] A superhydrophobic surface refers to a surface with a static contact angle of greater than 150° and a rolling angle of less than 10° with water. People's research on super-hydrophobic surfaces is inspired by the phenomenon that lotus leaves "get out of the mud without staining". Because of its surface functions such as corrosion protection, antibacterial, self-cleaning, anti-fog, anti-frost, and oil-water separation, it has a wide range of application prospects in real life. For example, preparing a super-hydrophobic film layer on metal surfaces such as outdoor antennas and wires can effectively prevent the accumulation of rain, snow and frost, so as to improve the smoothness of the signal and prevent the occurrence of power ...

Claims

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Application Information

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IPC IPC(8): C25D11/00C25F3/02B05D5/00B05D7/24
CPCB05D5/00B05D7/24B05D2518/00C25D11/00C25F3/02B05D2401/10
Inventor 康志新牛蕾马夏雨
Owner SOUTH CHINA UNIV OF TECH
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