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A kind of preparation method of wear-resistant superhydrophobic metal surface

A metal surface, super-hydrophobic technology, used in metal processing equipment, devices for coating liquids on surfaces, special surfaces, etc. Conducive to large-scale application and low cost

Active Publication Date: 2020-05-22
XIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a method for preparing a wear-resistant superhydrophobic metal surface, which solves the problems of poor applicability, low efficiency and high cost of the preparation method to different metal substrates

Method used

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  • A kind of preparation method of wear-resistant superhydrophobic metal surface
  • A kind of preparation method of wear-resistant superhydrophobic metal surface

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Experimental program
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Effect test

preparation example Construction

[0031] The preparation method of the wear-resistant superhydrophobic metal surface of the present invention is specifically implemented according to the following steps:

[0032] Step 1, preparing an ordered microstructure array on the surface of the metal substrate by mask micro-electrolytic machining;

[0033] The specific process is:

[0034] Step 1.1, metal substrate treatment: Polish the surface of the metal substrate with sandpaper to make the metal substrate roughness Ra≤0.3, then wash it with acetone, alcohol and deionized water in sequence, dry it with nitrogen, and then dry it for use;

[0035] Step 1.2, preparation of a patterned flexible insulating masking film: the flexible insulating film is made of a polyimide film with a thickness of 0.05-0.2 mm, and the flexible insulating film is first cleaned with alcohol and deionized water and dried with compressed air; using an ultraviolet laser The marking machine processes micro-hole arrays on the flexible insulating f...

Embodiment 1

[0054] Step 1, preparing an ordered microstructure array on the surface of the metal substrate by mask micro-electrolytic machining;

[0055] The specific process is:

[0056] Step 1.1, metal substrate treatment: Polish the surface of the metal substrate with sandpaper to make the metal substrate roughness Ra≤0.3, then wash it with acetone, alcohol and deionized water in sequence, dry it with nitrogen, and then dry it for use;

[0057] Step 1.2, preparation of a patterned flexible insulating masking film: the flexible insulating film is made of a polyimide film with a thickness of 0.05 mm, and the flexible insulating film is first cleaned with alcohol and deionized water and dried with compressed air; marking with an ultraviolet laser The machine processes the micro-hole array on the flexible insulating film, the process parameters: speed: 10mm / s, laser effective power: 3W, frequency: 20KHz;

[0058] Step 1.3, mask micro-electrolytic machining to prepare an ordered microstruc...

Embodiment 2

[0064] Step 1, preparing an ordered microstructure array on the surface of the metal substrate by mask micro-electrolytic machining;

[0065] The specific process is:

[0066] Step 1.1, metal substrate treatment: Polish the surface of the metal substrate with sandpaper to make the metal substrate roughness Ra≤0.3, then wash it with acetone, alcohol and deionized water in sequence, dry it with nitrogen, and then dry it for use;

[0067] Step 1.2, preparation of a patterned flexible insulating masking film: the flexible insulating film is made of a polyimide film with a thickness of 0.1 mm, and the flexible insulating film is first cleaned with alcohol and deionized water and dried with compressed air; marking with an ultraviolet laser The machine processes the micro-hole array on the flexible insulating film, the process parameters: speed: 20mm / s, laser effective power: 2W, frequency: 20KHz;

[0068] Step 1.3, mask micro-electrolytic machining to prepare an ordered microstruct...

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Abstract

The invention discloses a preparation method of a wear-resistant super-hydrophobic metal surface. The preparation method includes the steps of preparing ordered micron-structure array on the surface of a metal base by means of mask electrochemical micro-machining; by ultrasonic assisted anodizing, generating porous secondary coarse structure on the surface of the metal base with the ordered micron-structure array; spraying hydrophobic material to the surface of the porous secondary coarse structure, and baking after natural volatilization of solvent to obtain the product. According to the preparation method, in the processing of the ordered micron-structure array, the mask is provided with a flexible insulating film which has micron-structure array pattern and is treated through ultraviolet laser, and can be reused; thus, processing steps are decreased, efficiency is improved, cost is lowered, and application in scale is facilitated. Besides, the micron coarse structure is generated directly on the body of the metal base so that high strength is achieved; the processed metal surface porous structure can protect the hydrophobic coating well, and accordingly hydrophobic property and durability are improved.

Description

technical field [0001] The invention belongs to the field of metal surface modification and microprocessing, and in particular relates to a method for preparing a wear-resistant superhydrophobic metal surface. Background technique [0002] In recent years, metal superhydrophobic surfaces have attracted widespread attention due to their great application value in anti-corrosion and corrosion inhibition of metal workpiece surfaces, flow drag reduction, friction reduction between friction pair surfaces, and self-cleaning of metal jewelry surfaces. Surface hydrophobicity is mainly determined by the chemical composition and microscopic geometric structure of the surface, and the surface microscopic roughness can enhance hydrophobicity to achieve superhydrophobicity. [0003] At present, the hydrophobicity of metal surfaces is generally achieved through the following methods: (1) Using chemical corrosion or controlled thermal oxidation to generate metal oxide nanostructures on the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B05D5/00B05D7/14C25F3/14C25D11/02B23K26/362
CPCB05D5/00B05D7/14B23K26/361C25D11/02C25F3/14
Inventor 王权岱吕游蔡兴兴袁启龙李鹏阳李言
Owner XIAN UNIV OF TECH
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