Preparation method for super-amphiphobic surface of iron group metal

A super-amphiphobic surface and metal technology, which is applied to devices for coating liquids on surfaces, special surfaces, pre-treated surfaces, etc., can solve problems such as affecting chemical modification reactions, achieve simple process flow, convenient operation, and improve surface contact. corner effect

Inactive Publication Date: 2018-09-18
SHANGHAI JIAO TONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At the same time, since iron group metals and their alloys 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 for super-amphiphobic surface of iron group metal
  • Preparation method for super-amphiphobic surface of iron group metal

Examples

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Effect test

Embodiment 1

[0028] The present embodiment relates to a preparation method of a super-amphiphobic surface, such as figure 1 shown, the specific steps are as follows:

[0029] Step (1): preparation of nickel nano-needle cone array: take the substrate 1 and cut it properly, the substrate 1 is a nickel sheet, carry out degreasing, pickling and activation treatment on the surface of the substrate 1, and then place it in an electrochemical deposition solution Electroplating is carried out in the process, thereby obtaining the desired nickel nano-needle cone array;

[0030] Step (2): hydroxylation treatment of the substrate: put the nickel nano-needle cone array substrate of the above step (1) into a plasma cleaning machine, and bombard it with oxygen plasma for several seconds, so that the surface is hydroxylated;

[0031] 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 per...

Embodiment 2

[0034] The present embodiment relates to a preparation method of a super-amphiphobic surface, and the specific steps are as follows:

[0035] Step (1): preparation of nickel nano-needle cone array: take the base material and cut it appropriately, the base material is a nickel sheet, carry out degreasing, pickling, and activation treatment on the surface of the base material, and then place it in an electrochemical deposition solution for electroplating , thereby obtaining the desired nickel nano-needle cone array;

[0036] Step (2): hydroxylation treatment of the substrate: put the nickel nano-needle cone array substrate of the above step (1) into a plasma cleaning machine, and bombard it with a nitrogen-oxygen mixed gas plasma for several seconds, so that the surface is hydroxylated;

[0037] Step (3): chemical modification of fluorosilane: put the hydroxylated substrate in the above step (2) into the prepared alcohol solution containing 15% volume fraction of perfluorooctylt...

Embodiment 3

[0040] The present embodiment relates to a preparation method of a super-amphiphobic surface, and the specific steps are as follows:

[0041] Step (1): preparation of nickel nano-needle cone array: take the base material and cut it appropriately, the base material is a nickel sheet, carry out degreasing, pickling, and activation treatment on the surface of the base material, and then place it in an electrochemical deposition solution for electroplating , thereby obtaining the desired nickel nano-needle cone array;

[0042] Step (2): Hydroxylation treatment of the substrate: put the nickel nano-needle cone array substrate of the above step (1) into the tabby reagent and the mixed reagent of ammonia and hydrogen peroxide to carry out ultrasonic treatment on the surface, so that the surface is hydroxylated;

[0043] Step (3): chemical modification of fluorosilane: put the hydroxylated substrate in the above step (2) into the prepared alcohol solution containing 20% ​​volume fract...

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Abstract

The invention provides a preparation method for a super-amphiphobic surface of iron group metal. The preparation method comprises the following steps of firstly, carrying out pretreatment on the surface of the iron group metal or an alloy substrate of the iron group metal; secondly, carrying out hydroxylation treatment on the surface of the substrate treated in the first step; and thirdly, soakingthe substrate treated in the second step into a solution containing fluoroalkyl silane for surface chemical modification of organic film, and completing the preparation process by forming the super-amphiphobic film on the surface of the iron group metal or the alloy substrate of the iron group metal. According to the preparation method for the super-amphiphobic surface of the iron group metal, the iron group metal or the alloy of the iron group metal is used as the substrate, and a structure with a special roughness is formed on the iron group metal or the alloy of the iron group metal, in other words, first-grade roughness is provided; and the surface can be quickly modified with fluoroalkyl silane after surface hydroxylation is carried out, so that surface energy is reduced, and roughness may be further improved to form the super-amphiphobic surface. The preparation method for the super-amphiphobic surface of the iron group metal is simple in preparation technology, good in bindingforce between the substrate and the organic film, and capable of being widely used for corrosion prevention, stain prevention, adhesion prevention, self cleaning and the like of all types of metal.

Description

technical field [0001] The invention relates to the field of nanomaterial preparation technology and metal surface treatment technology, in particular to a preparation method of a super-amphiphobic surface, more particularly, to a preparation method of a super-amphiphobic surface of an iron group metal or its alloy. Background technique [0002] Based on their good thermal, electrical conductivity and mechanical reliability, iron group metals and their alloys are widely used in construction, equipment, machinery and other fields. However, in the process flow, iron group metals and their alloys are hydrophilic materials, and their surfaces are easily polluted and corroded, thereby affecting the performance of devices and equipment. The superphobic property can make the surface have excellent properties such as anti-corrosion, self-cleaning, anti-adhesion, etc., and solve the problem of metal pollution and corrosion. Therefore, how to prepare superphobic surfaces on iron grou...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B05D7/14B05D5/00B05D3/14C25D3/00C23C18/00C23C14/32C23F4/00
CPCB05D3/142B05D5/00B05D7/14C23C14/32C23C18/00C23F4/00C25D3/00
Inventor 蔡君彦李明王谭彦宇
Owner SHANGHAI JIAO TONG UNIV
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