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Preparation method of noble metal super-amphiphobic surface

Inactive Publication Date: 2018-09-14
SHANGHAI JIAO TONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this method uses more chemicals, the experimental steps are lengthy, and it needs to be calcined at high temperature for several hours
At the same time, since copper-based and silver-based metals are easily oxidized in air and other environments, the oxide layer formed on the surface of the substrate will often affect the subsequent chemical modification reaction.

Method used

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  • Preparation method of noble metal super-amphiphobic surface
  • Preparation method of noble metal super-amphiphobic surface
  • Preparation method of noble metal super-amphiphobic surface

Examples

Experimental program
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Embodiment 1

[0029] This embodiment relates to a preparation method of a super amphiphobic surface, such as figure 1 As shown, the specific steps are as follows:

[0030] Step (1): Preparation of copper micron needle cone array: take the base material 1 and cut it appropriately, the base material 1 is a copper sheet, carry out degreasing, pickling and activation treatment on the surface of the base material 1, and then place it in the electrochemical deposition solution Electroplating is carried out in , thereby obtaining the required copper micro-cone array, such as figure 1 and figure 2 As shown in a; the obtained copper micro-cone structure 2 includes a copper micro-cone central twin structure 4 and a secondary crystal structure 3;

[0031] Step (2): Hydroxylation treatment of the substrate: put the copper micro-cone array substrate in the above step (1) into a plasma cleaning machine, and bombard it with oxygen plasma for a few seconds to make the surface hydroxylated;

[0032] Ste...

Embodiment 2

[0035] This embodiment relates to a method for preparing a super-amphiphobic surface, and the specific steps are as follows:

[0036] Step (1): Preparation of copper micron needle cone array: take the substrate and cut it appropriately, the substrate is a copper sheet, degrease, pickle, and activate the surface of the substrate, and then place it in an electrochemical deposition solution for electroplating , thus obtaining the desired copper micro-cone array;

[0037] Step (2): Hydroxylation treatment of the substrate: put the copper micro needle cone array substrate in the above step (1) into a plasma cleaning machine, and bombard it with a nitrogen-oxygen mixed gas plasma for a few seconds, so that the surface is hydroxylated;

[0038] Step (3): Chemical modification of fluorosilane: put the hydroxylated substrate in the above step (2) into the prepared alcohol solution containing 1% volume fraction of perfluorooctyltrichlorosilane, and react for 1 h Then take it out, wash ...

Embodiment 3

[0041] This embodiment relates to a method for preparing a super-amphiphobic surface, and the specific steps are as follows:

[0042] Step (1): Preparation of copper micron needle cone array: take the substrate and cut it appropriately, the substrate is a copper sheet, degrease, pickle, and activate the surface of the substrate, and then place it in an electrochemical deposition solution for electroplating , thus obtaining the desired copper micro-cone array;

[0043] Step (2): Hydroxylation treatment of the substrate: put the copper micro needle cone array substrate in the above step (1) into the Tiger Banner reagent and a mixed reagent of ammonia and hydrogen peroxide, and perform ultrasonic treatment on its surface, so that the surface is hydroxylated;

[0044] Step (3): Chemical modification of fluorosilane: put the hydroxylated substrate in the above step (2) into the prepared alcohol solution containing 10% by volume of perfluorooctyltrichlorosilane, and react for 10 h ...

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Abstract

The invention provides a preparation method of a noble metal super-amphiphobic surface. The method comprises the following steps: A, performing pretreatment on a noble metal base material surface; B,performing hydroxylation pretreatment on the base material surface treated in the step A; soak a base material treated in the step B into a solution containing fluoroalkyl silane to perform surface chemical modification on an organic film, and forming a super-amphiphobic film on the noble metal base material surface, so as to form the noble metal super-amphiphobic surface. The method takes noble metal copper and silver as a substrate, a structure with special roughness is formed on the copper and silver, namely primary roughness is provided, and then the surface can be rapidly modified with fluoroalkyl silane after surface hydroxylation is performed, so that the surface energy is reduced, the roughness is further improved, and the super-amphiphobic surface is formed. The preparation technology is simple, the binding force between the a base material and the organic film is good, the super-amphiphobic surface can be prepared in large scale, the applicability is wide, and the problems ofcorrosion protection, fouling prevention and adhesion prevention are solved to a certain extent.

Description

technical field [0001] The invention relates to the fields of nanomaterial preparation technology and metal surface treatment technology, in particular to a method for preparing a superamphiphobic surface, and more specifically, to a method for preparing a noble metal superamphiphobic surface. Background technique [0002] Based on its good thermal, electrical conductivity and mechanical reliability, copper is widely used in electrical, electronic industry, machinery manufacturing, construction industry, defense industry, etc. However, in the process flow, copper is a hydrophilic material, and its surface is easily polluted and corroded, which affects the performance of the device. At present, the technology of preparing superhydrophobic films on substrates such as copper and silver has been relatively mature. However, in the actual application process, the substrate is still inevitably exposed to low surface energy organic reagents, industrial oils, etc., which will contam...

Claims

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Application Information

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IPC IPC(8): B05D5/00B05D7/14C25D3/38C23C18/44
CPCB05D5/00B05D7/14B05D2202/00B05D2202/45C23C18/44C25D3/38
Inventor 蔡君彦李明王谭彦宇
Owner SHANGHAI JIAO TONG UNIV
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