Copper super-hydrophobic surface with decay resistance and preparation method thereof

A corrosion-resistant and super-hydrophobic technology, applied in special surfaces, chemical instruments and methods, and devices for coating liquids on surfaces, etc., can solve the problems of molecular failure, acid insufficiency, easy detachment of hydrophobic films, etc., and achieve good stability. high performance, simple method and good hydrophobicity

Inactive Publication Date: 2013-05-08
SHANGHAI JIAO TONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, there have been related reports on the preparation of super-hydrophobic surfaces. Most of the super-hydrophobic surfaces formed by oxidation of metals are not acid-resistant and soft and easy to fall off, while other super-hydrophobic surfaces of polymers are under high temperature conditions due to molecular Fluidity can easily lead to failure; in addition, there are some superhydrophobic materials that do not have sufficient interfacial bonding strength, and the hydrophobic film is easy to fall off and fail after a period of use
These defects greatly restrict the practical application of superhydrophobic surface materials.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] The following method is used to prepare a corrosion-resistant copper micro-array superhydrophobic material:

[0029] (1) Select copper sheet as the metal substrate, and degrease and pickle the surface;

[0030] (2) Put the metal substrate treated in step (1) in PdCl with a concentration of 0.15g / L 2 Activation treatment in solution;

[0031] (3) Put the metal substrate activated in step (2) into the chemical deposition solution for chemical deposition. The composition and concentration of the chemical deposition solution are: copper sulfate 0.05 mol / L, nickel sulfate 0.008 mol / L, lemon Trisodium acid 0.08mol / L, boric acid 0.5mol / L, sodium hypophosphite 0.4 mol / L, and polyethylene glycol 15ppm, adjust pH to 9 with sodium hydroxide, chemical deposition temperature is 50°C, chemical deposition time 25min;

[0032] (4) The metal plated sheet obtained by chemical deposition in step (3) is washed with deionized water, dried, and then placed in 0.015mol / L n-hexadecanthane s...

Embodiment 2

[0042] According to the method of Example 1, the concentration of the n-hexadecanethiol solution is changed to 0.025mol / L, and the contact angle between the surface of the prepared corrosion-resistant copper micro-array superhydrophobic material and water is greater than 150°, and the rolling angle is greater than 150°. less than 10°.

[0043]

Embodiment 3

[0045] The following method is used to prepare a corrosion-resistant copper micro-array superhydrophobic material:

[0046] (1) Aluminum sheet is selected as the metal substrate, and its surface is degreased and pickled;

[0047] (2) Put the metal substrate treated in step (1) in 0.35g / L PdCl 2 Activation treatment in solution;

[0048](3) Put the metal substrate activated in step (2) into the chemical deposition solution for chemical deposition. The composition and concentration of the chemical deposition solution are: copper chloride 0.02 mol / L, nickel chloride 0.01 mol / L , malic acid 0.08mol / L, boric acid 0.2mol / L, sodium hypophosphite 0.2mol / L, and polypropylene glycol 5ppm, adjust the pH to 8 with potassium hydroxide, the temperature of chemical deposition is 20°C, and the chemical deposition time is 60min ;

[0049] (4) The metal plated sheet obtained by chemical deposition in step (3) was washed with deionized water, dried, and then placed in a 0.01mol / L n-octadecyl ...

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Abstract

The invention discloses a super-hydrophobic surface of a metal copper micron array and a preparation method thereof. The method comprises the steps of firstly, building a coarse structure of micro-size copper on a metal substrate by chemical deposition; then carrying out hydrophobic treatment on the surface of a self-assembled low-surface energy matter to cover a layer of hydrophobic film on the coarse structure, so as to obtain the super-hydrophobic metal copper surface. The metal copper surface prepared by the method disclosed by the invention has an excellent super-hydrophobic property; the contact angle with water drops can achieve 156 degrees; the rolling angle is smaller than 1 degree; meanwhile, the copper hydrophobic surface has a good surface structure stability, has excellent performances such as acid resistance, alkali resistance, organic solvent resistance, low temperature resistance, and high temperature resistance, and can meet the requirements of the industrial field on the metal copper super-hydrophobic surface. The technique has the advantages that any template is not needed; complicated equipment is not needed; and the super-hydrophobic surface has no special requirements on the shape of a substrate and is suitable for industrial mass production.

Description

technical field [0001] The invention relates to a method for preparing a copper super-hydrophobic surface with corrosion resistance, in particular to a method for preparing a super-hydrophobic surface on a copper surface by utilizing a chemical deposition process and a molecular self-assembly technology. Background technique [0002] It is well known that the wettability of materials is mainly controlled by two factors, one is the surface morphology and the other is the chemical state of the surface. Among them, superhydrophobic surfaces are of great significance in basic research and industrial applications due to their waterproof, anti-fog, and self-cleaning properties, and have attracted extensive attention. A superhydrophobic surface refers to a surface with a contact angle greater than 150° and a rolling angle less than 10°. For smooth surfaces, the contact angle can only be increased to 120°. [0003] The practical application of superhydrophobic surfaces needs to so...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B15/04B32B9/04C23C18/38C23C18/18B05D5/08
Inventor 余喆吟李明章文婧
Owner SHANGHAI JIAO TONG UNIV
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