Cupronickel B30 having super-hydrophobic surface and preparation method thereof

A technology of super-hydrophobic surface and cupronickel, which is applied to the device and coating of surface coating liquid, can solve the problems of unreported preparation technology, special equipment, complicated operation, etc., and achieve simple preparation method, low production cost, and process. Easy-to-control effects

Inactive Publication Date: 2013-05-01
SHANGHAI UNIVERSITY OF ELECTRIC POWER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, there are many methods for preparing copper superhydrophobic surfaces, such as gel sol method, electrolysis method, etc., but these preparation methods have disadvantages such as complicated operation, special equipment, long time c

Method used

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  • Cupronickel B30 having super-hydrophobic surface and preparation method thereof
  • Cupronickel B30 having super-hydrophobic surface and preparation method thereof
  • Cupronickel B30 having super-hydrophobic surface and preparation method thereof

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Embodiment 1

[0045] A preparation method of cupronickel B30 with a superhydrophobic surface, comprising the steps of:

[0046] (1) Preparation of etching solution

[0047] Take 13.35ml of 30%wt.H 2 o 2 Put the reagent in a 100ml volumetric flask, and then add 1ml of 35-37wt.% hydrochloric acid to prepare a volume of 100ml of 5wt.% hydrochloric acid H 2 o 2 The solution is the etching solution;

[0048] (2), pretreatment of cupronickel B30

[0049] After polishing two pieces of white copper B30 with 1#, 3#, and 6# metallographic sandpaper in turn, clean them with an ultrasonic cleaner in acetone solution for about 5 minutes, and then rinse them with absolute ethanol and deionized water in order to remove Surface oil and grease, one of which is used as blank white copper B30;

[0050] (3), chemical etching to construct surface roughness

[0051] Immerse a piece of cupronickel B30 pretreated in step (2) into the etching solution obtained in step (1), etch at room temperature for 30 min...

Embodiment 2

[0060] A preparation method of cupronickel B30 with a superhydrophobic surface, comprising the steps of:

[0061] (1) Preparation of etching solution

[0062] Take 13.35ml of 30%wt.H 2 o 2 Put the reagent in a 100ml volumetric flask, then add 1ml of 35-37wt.% hydrochloric acid to prepare 100ml of 5wt.% hydrochloric acid H 2 o 2 The solution is the etching solution;

[0063] (2), pretreatment of cupronickel B30

[0064] After polishing two pieces of white copper B30 with 1#, 3#, and 6# metallographic sandpaper in turn, clean them with an ultrasonic cleaner in acetone solution for about 5 minutes, and then rinse them with absolute ethanol and deionized water in order to remove Surface oil and grease, one of which is used as blank white copper B30;

[0065] (3), chemical etching to construct surface roughness

[0066] Immerse a piece of cupronickel B30 pretreated in step (2) into the etching solution obtained in step (1), etch at room temperature for 30 minutes, after etch...

Embodiment 3

[0071] A preparation method of cupronickel B30 with a superhydrophobic surface, comprising the steps of:

[0072] (1) Preparation of etching solution

[0073] Take 13.35ml of 30%wt.H 2 o 2 Put the reagent in a 100ml volumetric flask, add 1ml of 35-37wt.% hydrochloric acid, and prepare a volume of 100ml of 5wt.% hydrochloric acid H 2 o 2 The solution is the etching solution;

[0074] (2), pretreatment of cupronickel B30

[0075] After polishing the white copper B30 with 1#, 3#, 6# metallographic sandpaper in turn, clean it with an ultrasonic cleaner in acetone solution for about 5 minutes, and then rinse it with absolute ethanol and deionized water in order to remove surface oil and dirt. grease;

[0076] (3), chemical etching to construct surface roughness

[0077] Immerse the cupronickel B30 pretreated in step (2) into the etching solution obtained in step (1), etch at room temperature for 30 minutes, after etching, ultrasonically clean it for 5 minutes, and dry it at ...

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Abstract

The invention discloses cupronickel B30 having the super-hydrophobic surface and a preparation method thereof. The surface of cupronickel B30 is chemically etched by an HCl-H2O2 solution having a concentration of 5wt% and through a self-assembly technology, a stearic acid film is formed on the treated surface of the cupronickel B30. The preparation method comprises the four steps of etching liquid preparation, cupronickel B30 pretreatment, rough surface preparation by chemical etching, and self-assembling of stearic acid on the rough surface of cupronickel B30. The cupronickel B30 having the super-hydrophobic surface has high corrosion resistance. A contact angle of water and the surface of the cupronickel B30 having the super-hydrophobic surface is 152.8 degrees. The cupronickel B30 having the super-hydrophobic surface has good anticorrosion effects in a NaCl aqueous solution having a concentration of 3.5wt% and has corrosion inhibition efficiency eta of 96.7%. The preparation method has the advantages of simple processes, low production cost and easy process control.

Description

technical field [0001] The invention relates to a cupronickel B30 with a superhydrophobic surface and a preparation method thereof, in particular to a method for preparing a superhydrophobic surface on the cupronickel B30 surface through a simple chemical etching method and self-assembly technology. Background technique [0002] Because of its excellent heat transfer and corrosion resistance, cupronickel is widely used in thermal power generation units and heat exchange systems in marine military projects. However, in actual use, due to the presence of aggressive ions (such as Cl-) in cooling water, especially seawater, nickel-nickel copper often suffers from serious corrosion problems, which brings huge economic losses to production. Commonly used anti-corrosion methods, such as adding water treatment corrosion inhibitors, have disadvantages such as environmental pollution and large dosage. [0003] Super-hydrophobic surface treatment technology is a new anti-corrosion tec...

Claims

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Application Information

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IPC IPC(8): C23F1/18B05D1/18
Inventor 徐群杰张娇翔张国利李美明云虹
Owner SHANGHAI UNIVERSITY OF ELECTRIC POWER
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