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Preparing method for low-carbon steel super-hydrophobic surface

A super-hydrophobic surface and low-carbon steel technology, which is applied in the coating process of metal materials, etc., can solve the problems of 3-8 hours of corrosion time, complex process, and difficult control of surface uniformity, and achieve low equipment requirements and simple operation , the effect of good superhydrophobic performance

Active Publication Date: 2016-06-08
KUNMING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Patent ZL2012101423432 discloses a method in which the steel surface is shot blasted or shot blasted to form a rough surface, and then the surface is chemically etched with hydrochloric acid solution and then modified with low energy to obtain a super-hydrophobic surface. It takes 3-8 hours; patent ZL200910212774.X discloses a treatment method for preparing superhydrophobic steel surface by hydrochloric acid water bath treatment + n-hexane modification, but the surface uniformity prepared by the water bath process is difficult to control

Method used

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  • Preparing method for low-carbon steel super-hydrophobic surface
  • Preparing method for low-carbon steel super-hydrophobic surface
  • Preparing method for low-carbon steel super-hydrophobic surface

Examples

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Effect test

Embodiment 1

[0020] This embodiment provides a method for preparing a low-carbon steel superhydrophobic surface, which specifically includes the following steps:

[0021] (1) Pretreatment: Use 400#SiC sandpaper to remove the surface oxide layer and oil stains of low carbon steel (main components are C0.13%, Mn0.6%, Si0.01%, P0.015%, S0.05%) , placed in 99% acetone and 99% ethanol in turn for 10 minutes, took it out and dried it quickly.

[0022] (2) Salt spray corrosion of the pretreated low carbon steel: put the steel sheet in a salt spray test chamber with a salt spray pH value of 7.2, a mass concentration of 5% NaCl, a temperature of 32°C, and a spray pressure of 100kPa Take it out after 60min.

[0023] (3) The corroded low-carbon steel is taken out, washed with distilled water, and then dried at 120°C for 30 minutes.

[0024] (4) After drying, the low-carbon steel is modified with low surface energy. The low-carbon steel is soaked in an ethanol solution with a mass concentration of 1...

Embodiment 2

[0026] This embodiment provides a method for preparing a low-carbon steel superhydrophobic surface, which specifically includes the following steps:

[0027] (1) Pretreatment: Use 1200#SiC sandpaper to remove the surface oxide layer and oil stains of low carbon steel (main components are C0.13%, Mn0.6%, Si0.01%, P0.2%, S0.05%) , placed in 99% acetone and 99% ethanol in turn for 10 minutes, took it out and dried it quickly.

[0028] (2) Salt spray corrosion of the pretreated low carbon steel: put the steel sheet in a salt spray test chamber with a salt spray pH value of 7.0, a mass concentration of 5% NaCl, a temperature of 30°C, and a spray pressure of 90kPa Take it out after 120min.

[0029] (3) The corroded low-carbon steel was taken out, washed with distilled water, and then dried at 110°C for 40 minutes.

[0030] (4) After drying, the low-carbon steel is modified with low surface energy. The low-carbon steel is soaked in an ethanol solution of heptadecafluorodecyltrietho...

Embodiment 3

[0032] This embodiment provides a method for preparing a low-carbon steel superhydrophobic surface, which specifically includes the following steps:

[0033] (1) Pretreatment: Use 800#SiC sandpaper to remove the surface oxide layer and oil stains of low carbon steel (main components are C0.13%, Mn0.7%, Si0.01%, P0.15%, S0.05%) , placed in 99% acetone and 99% ethanol in turn for 10 minutes, took it out and dried it quickly.

[0034] (2) Salt spray corrosion of the pretreated low carbon steel: put the steel sheet in a salt spray test chamber with a salt spray pH value of 6.8, a mass concentration of 5% NaCl, a temperature of 33°C, and a spray pressure of 70kPa Take it out after 80min.

[0035] (3) The corroded low-carbon steel is taken out, washed with distilled water, and then dried at 100°C for 50 minutes.

[0036] (4) The dried low-carbon steel is modified with low surface energy, soaked in an ethanol solution of 1% dodecanethiol for 5 minutes, then taken out and rinsed wit...

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Abstract

The invention discloses a preparing method for a low-carbon steel super-hydrophobic surface, and belongs to the field of metal surface treatment. According to the method, low-carbon steel is subject to salt-spray corrosion, and then a needle-piece-shaped composite structure is formed on the surface; and low-surface-energy treatment is carried out, and the super-hydrophobic surface can be obtained after rapid blow drying. The surface prepared by the method has the beneficial effects of being excellent in hydrophobic self-cleaning and the like, and the preparing method for the super-hydrophobic surface is not limited by a base material shape structure, and is low in cost and simple in technology.

Description

technical field [0001] The invention relates to a method for preparing a super-hydrophobic surface of low-carbon steel, which belongs to the field of metal surface treatment. Background technique [0002] Steel materials are widely used in industries such as construction, transportation, aviation, machinery manufacturing and home appliances. With the development of industry, the application environment of steel materials is more changeable and complex, and higher and higher requirements are put forward for its performance. The steel surface is closely related to its performance such as anti-corrosion, drag reduction, and wear resistance. The superhydrophobic surface has good properties such as anti-fouling, self-cleaning, anti-corrosion, anti-icing, and reducing surface resistance. The preparation of super-hydrophobic surfaces for steel materials is of great significance for further improving the performance of steel materials. [0003] A superhydrophobic surface is a surf...

Claims

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Application Information

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IPC IPC(8): C23C22/02C23C22/78
CPCC23C22/02C23C22/78C23C2222/20
Inventor 王力朱艳黎振华沈韬
Owner KUNMING UNIV OF SCI & TECH
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