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Preparation method for cupronickel super-hydrophobic surface

A technology of super-hydrophobic surface and cupronickel, which is applied in the field of preparation of cupronickel super-hydrophobic surface, can solve the problems of poor stability, complicated processing procedures and high cost, and achieve the effects of high stability, simple preparation process and low cost.

Active Publication Date: 2016-01-06
SHANGHAI UNIVERSITY OF ELECTRIC POWER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to overcome the above-mentioned defects in the prior art and provide a method for preparing a cupronickel superhydrophobic surface which is green, simple in process, low in cost and good in stability, so as to solve the superhydrophobic surface of cupronickel in the prior art. The technical problems of hydrophobic surface technology are complex processing procedures, high cost, and poor stability

Method used

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  • Preparation method for cupronickel super-hydrophobic surface
  • Preparation method for cupronickel super-hydrophobic surface

Examples

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Embodiment 1

[0056] A method for preparing a cupronickel superhydrophobic surface with corrosion resistance, comprising the following steps:

[0057] (1) Preparation of etching solution

[0058] Prepare an aqueous ammonia solution, and control the mass fraction of the ammonia water at 10%-20%;

[0059] (2) Pretreatment of cupronickel

[0060] 7 pieces of cupronickel were polished with 1#, 3#, and 6# metallographic sandpaper in turn, cleaned with an ultrasonic cleaner in acetone for about 15 minutes, and then rinsed with absolute ethanol and deionized water in turn to remove surface oil and dirt. grease;

[0061] (3), chemical etching

[0062] Take out 5 pieces of white copper pretreated in step (2) and immerse them in the 6 parts of the etching solution obtained in step (1) respectively, etch for 30min under the condition of 60°C in a water bath, and ultrasonically clean for 5min after etching;

[0063] (4), high temperature calcination

[0064] The cupronickel obtained after the etch...

Embodiment 2

[0073] A method for preparing a cupronickel superhydrophobic surface with corrosion resistance, comprising the following steps:

[0074] (1) Preparation of etching solution

[0075] Prepare an aqueous ammonia solution, and control the mass fraction of the ammonia water at 10%-20%;

[0076] (2) Pretreatment of cupronickel

[0077] After the 6 pieces of cupronickel were polished with 1#, 3#, and 6# metallographic sandpaper in turn, cleaned with an ultrasonic cleaner in acetone for about 15 minutes, and then rinsed with absolute ethanol and deionized water in turn to remove surface oil and dirt. grease;

[0078] (3), chemical etching

[0079] Take out 5 pieces of white copper pretreated in step (2) and immerse them in the 6 parts of the etching solution obtained in step (1) respectively, etch for 30min under the condition of 60°C in a water bath, and ultrasonically clean for 5min after etching;

[0080] (4), high temperature calcination

[0081] The cupronickel obtained afte...

Embodiment 3

[0086] A method for preparing a cupronickel superhydrophobic surface with corrosion resistance, comprising the following steps:

[0087] (1) Preparation of etching solution

[0088] Prepare an aqueous ammonia solution, and control the mass fraction of the ammonia water at 10%-20%;

[0089] (2) Pretreatment of cupronickel

[0090] 7 pieces of cupronickel were polished with 1#, 3#, and 6# metallographic sandpaper in turn, cleaned with an ultrasonic cleaner in acetone for about 15 minutes, and then rinsed with absolute ethanol and deionized water in turn to remove surface oil and dirt. grease;

[0091] (3), chemical etching

[0092] Take out 5 pieces of white copper pretreated in step (2) and immerse them in the 6 parts of the etching solution obtained in step (1) respectively, etch for 30min under the condition of 60°C in a water bath, and ultrasonically clean for 5min after etching;

[0093] (4), high temperature calcination

[0094] The copper obtained after the etching i...

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Abstract

The invention relates to a preparation method for a cupronickel super-hydrophobic surface. According to the preparation method, firstly, an ammonia-water solution serves as an etchant, and cupronickel is pretreated to remove oil contamination and grease on the surface; afterwards, the pretreated cupronickel is subjected to chemical etching through the etchant; then calcination treatment is conducted, and the cupronickel surface with a rough structure is prepared; and finally, the cupronickel surface is put in an ethanol solution of stearic acid for soaking, a super-hydrophobic film is generated on the rough cupronickel surface in a self-assembly mode, afterwards, the cupronickel super-hydrophobic surface is prepared after filtration, washing and drying. Compared with the prior art, the preparation method combining chemical etching with the high-temperature calcination treatment is adopted, the surface roughness is constructed on the cupronickel surface so that stearic acid molecules can be adsorbed strongly; the preparation process is simple, mild in condition, low in cost, high in stability and environmentally friendly. The contact angle of the prepared cupronickel super-hydrophobic surface can be up to 153 degrees, and the prepared cupronickel super-hydrophobic surface has good corrosion resistance.

Description

technical field [0001] The invention belongs to the field of chemical industry, and relates to a method for preparing a cupronickel super-hydrophobic surface, in particular to a preparation method for a cupronickel super-hydrophobic surface with corrosion resistance. Background technique [0002] Cupronickel is a very important engineering metal material. Because of its high strength, high hardness and excellent heat transfer and corrosion resistance, it can be used in the marine shipbuilding industry to make condensers and thermostats that work under high temperature, high pressure and high speed conditions. In addition, it can also be used as instrument parts working in wet conditions and strong corrosive media, as well as medical equipment, industrial utensils, artwork, telecommunication industry parts, steam fittings and water pipe fittings, daily necessities, spring tubes and reeds, etc. , but the poor corrosion resistance in these harsh environments affects the overall...

Claims

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Application Information

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IPC IPC(8): C23F1/34C23C22/02
Inventor 徐群杰刘伟韩杰陈晓航闵宇霖
Owner SHANGHAI UNIVERSITY OF ELECTRIC POWER
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