Process for producing super-double-thinning surface for metal corrosion protection and oil stain self-cleaning

A super-amphiphobic surface and metal anti-corrosion technology, which is applied in the direction of electrolytic organic material coating, etc., can solve the problems of not functioning normally, metal materials are easily corroded, and affect the service life of materials, so as to achieve easy industrialization, excellent stability, Anti-corrosion effect

Inactive Publication Date: 2009-07-29
INST OF CHEM CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In recent years, there have been literature and patent reports using the method of preparing super-hydrophobic surfaces to reduce the contact between the metal surface and water, so as to realize the oily self-cleaning of the metal, but these reported methods can only use the scouring effect of water to keep the metal surface clean. Clean, but powerless against organic pollutants such as oil
In addition, in a humid or corrosive environment, metal materials are easily corroded, which affects the service life of the material, causes it to not function normally, and also brings many unsafe factors to users

Method used

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  • Process for producing super-double-thinning surface for metal corrosion protection and oil stain self-cleaning
  • Process for producing super-double-thinning surface for metal corrosion protection and oil stain self-cleaning
  • Process for producing super-double-thinning surface for metal corrosion protection and oil stain self-cleaning

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] 1. Use an ultrasonic cleaner to clean the metal copper sheet sample for the test. The cleaning steps are: put the copper substrate in acetone, deionized water, and ethanol in turn and clean it with ultrasonic waves for 5 minutes each to remove the grease and other pollution on the surface. substance;

[0027] 2. Use the treated copper sheet as the anode and cathode of the electrochemical reaction respectively, and put in a concentration of 0.05mol / L perfluorinated fatty acid (CF 3 (CF 2 ) 10 COOH) in the acetone solution, apply a DC voltage of 5V between the anode and the cathode;

[0028] 3. After 1 hour, take out the cathode copper sheet, rinse it with ethanol and deionized water, and dry it in the atmosphere to obtain the perfluorinated fatty acid copper salt attached to the surface of the cathode copper sheet to obtain a super-amphiphobic surface layer;

[0029]4. After testing with a contact angle measuring instrument (German Dataphysics OCA20 Contact Angle syst...

Embodiment 2

[0031] 1. Use an ultrasonic cleaner to clean the metal copper and iron samples for the test. The cleaning steps are: put the metal copper and iron substrates into acetone, deionized water, and ethanol in turn and clean them with ultrasonic waves for 5 minutes each to remove Grease and other contaminants on the surface;

[0032] 2. Use the treated metal copper and iron substrates as the anode and cathode of the electrochemical reaction respectively and put 0.05mol / L perfluorinated fatty acid (CF 3 (CF 2 ) 8 COOH) in the ethanol solution, apply a DC voltage of 2V between the anode and the cathode;

[0033] After 3.2 hours, take out the cathode iron sheet, rinse it with ethanol and deionized water, and dry it in the atmosphere to obtain the perfluoro fatty acid copper salt attached to the surface of the cathode iron sheet to obtain a super amphiphobic surface layer;

[0034] 4. After testing by the contact angle measuring instrument, the test results are: the contact angle of ...

Embodiment 3

[0036] 1. The metal copper and aluminum sheet samples used in the cleaning test of the acoustic wave cleaning instrument are as follows: put the copper substrate and the aluminum sheet in acetone, deionized water, and ethanol in turn and clean them with ultrasonic waves for 5 minutes each to remove the surface. grease and other pollutants;

[0037] 2. The treated metal copper and aluminum substrates are respectively used as the anode and cathode of the electrochemical reaction and put into the 0.02mol / L perfluorinated fatty acid (CF 3 (CF 2 ) 12 COOH) in the ethanol solution, apply a DC voltage of 4V between the anode and the cathode;

[0038] After 3.2 hours, take out the cathode aluminum sheet, rinse it with ethanol and deionized water, and dry it in the atmosphere to obtain the perfluoro fatty acid copper salt attached to the surface of the cathode aluminum sheet to obtain a super amphiphobic surface layer;

[0039] 4. After testing by the contact angle measuring instrum...

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Abstract

The invention relates to a method for preparing a super-amphiphobic material, in particular to an electromechanical preparation method of a super-amphiphobic surface with stain self-cleaning effect used for metal corrosion prevention. The method comprises the following steps: a metal or metal alloy base material is washed cleanly to remove stains and pollutants on the surface of the metal or metal alloy base material; perfluorinated aliphatic acid organic electrolytic solution with concentration of 0.001-0.1mol/L is prepared; the clean metal or metal alloy base material and copper metal or copper alloy base material are respectively used as a cathode and an anode to be arranged into the perfluorinated aliphatic acid organic electrolytic solution; 0.5 to 25V voltage is applied between the cathode and the anode for electrochemical reaction; and a perfluorinated aliphatic acid nantokite super-amphiphobic surface layer with stain self-cleaning effect used for metal corrosion prevention is deposited on the surface of the metal or metal alloy base material used as the cathode. The method has the advantages of simple operation and low requirement of equipment, is not limited by substrate shape, is easy for industrialization, and has quite wide practical value.

Description

technical field [0001] The invention relates to a preparation method of a superamphiphobic material, in particular to an electrochemical preparation method of a superamphiphobic (both superhydrophobic and superoleophobic) surface for metal anticorrosion and oil stain self-cleaning effects. Background technique [0002] Due to their excellent electrical and thermal conductivity, high strength and good processability, metal materials are widely used in various sectors of shipbuilding, construction, national defense and national production. However, ordinary metals will inevitably be polluted by dust and oil during normal use, which will affect the aesthetics and performance of the material. Therefore, the oily self-cleaning properties of metals have been the focus of discussion, especially the cleaning of high-altitude building surfaces that are not easy to clean manually. In recent years, there have been literature and patent reports using the method of preparing a super-hyd...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25D9/02
Inventor 郗金明孟海凤江雷
Owner INST OF CHEM CHINESE ACAD OF SCI
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