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Preparation method and application of super-hydrophobic coating and product with super-hydrophobic coating

A technology for super-hydrophobic coatings and products, which is applied in the preparation of super-hydrophobic coatings and the field of products containing super-hydrophobic coatings. It can solve problems such as low efficiency, the hydrophobic performance of super-hydrophobic layers needs to be improved, and the operation of super-hydrophobic surfaces is complicated. Achieve the effect of high flexibility, good hydrophobic effect and low cost

Inactive Publication Date: 2020-04-10
SOUTHWEST JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the preparation of superhydrophobic surfaces in the prior art still has technical problems such as complex operation and low efficiency, and the hydrophobic performance of the prepared superhydrophobic layer needs to be improved.

Method used

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  • Preparation method and application of super-hydrophobic coating and product with super-hydrophobic coating
  • Preparation method and application of super-hydrophobic coating and product with super-hydrophobic coating
  • Preparation method and application of super-hydrophobic coating and product with super-hydrophobic coating

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preparation example Construction

[0033] The embodiment of the present invention provides a kind of preparation method of superhydrophobic coating, comprising:

[0034] The substrate selected in the embodiment of the present invention can be weather-resistant steel, preferably SMA490BW type weather-resistant steel. Using the above-mentioned substrate can make the prepared material not only have good super-hydrophobic performance, but also have corrosion resistance, etc., and improve the overall performance of the material. It is more conducive to the application of materials in high-speed train bogies.

[0035] First, the substrate is pretreated; pretreatment includes grinding and surface cleaning of the substrate; pretreatment removes impurities on the surface of the substrate, making the surface of the substrate smoother, which is conducive to improving the bonding force between the superhydrophobic coating and the surface of the substrate , and then improve the overall performance of the matrix.

[0036] T...

Embodiment 1

[0048] This embodiment provides a method for preparing a superhydrophobic coating, the base material is SMA490BW weathering steel, and the steps are as follows:

[0049] (1) Pretreatment: Polish the 50*50*5mm weathering steel sample with 250#, 400#, 800#, 1000# and 1500# sandpaper in sequence, then ultrasonically clean it with absolute ethanol for 8 minutes, and use the cleaned substrate with Blow dry and set aside to get a clean weathering steel surface.

[0050] (2) Etching: Etch a striped structure on the surface of weathering steel. Specifically, use a nanosecond laser cleaner to etch the pretreated weathering steel surface. The process parameters of laser etching are: the maximum output power of the laser is 30W, and the laser The frequency is 80KHz, the laser wavelength is 1060nm, and the scanning speed is 50mm·s -1 , with a scan spacing of 10 μm.

[0051] (3) Pretreatment: Put the etched weathering steel sample into absolute ethanol for ultrasonic cleaning for 15 minu...

Embodiment 2

[0056] This embodiment provides a preparation method using a superhydrophobic coating, the base material is SMA490BW weathering steel, and the steps are as follows:

[0057] (1) Pretreatment: Polish the 50*50*5mm weathering steel sample with 250#, 400#, 800#, 1000# and 1500# sandpaper in sequence, then ultrasonically clean it with absolute ethanol for 8 minutes, and use the cleaned substrate with Blow dry and set aside to get a clean weathering steel surface.

[0058] (2) Etching: use a nanosecond laser cleaner to etch the pretreated weathering steel surface. The process parameters of laser etching are: the maximum output power of the laser is 20W, the laser frequency is 80KHz, the laser wavelength is 1060nm, and the scanning speed is 50mm ·s -1 , the scanning interval is 10 μm, and the stripe structure is etched on the weathering steel surface.

[0059] (3) Pre-treatment of modification: put the etched weathering steel sample into absolute ethanol for ultrasonic cleaning fo...

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Abstract

The invention relates to the technical field of preparation of super-hydrophobic coatings, in particular to a preparation method and application of a super-hydrophobic coating and a product with the super-hydrophobic coating. The preparation method of the super-hydrophobic coating comprises the step that the surface of a substrate after being subjected to nano laser corrosion is sprayed with silicon oxide by adopting air spray. The preparation method is easy to operate, low in cost and high in preparation efficiency, and the prepared super-hydrophobic coating has good hydrophobic performance,corrosion resistance and anti-icing performance.

Description

technical field [0001] The invention relates to the technical field of preparation of superhydrophobic coatings, in particular to a preparation method and application of superhydrophobic coatings and products containing superhydrophobic coatings. Background technique [0002] SMA490BW type weathering steel is based on ordinary carbon steel, adding Cu, P, Cr, Ni and other elements that are resistant to atmospheric corrosion. It has good atmospheric corrosion resistance, so it is often used in rail transit vehicles, road vehicles, containers, etc. industry. The service environment of high-speed train bogies is complex, not only vulnerable to atmospheric corrosion, but also vulnerable to ice and snow. [0003] In recent years, superhydrophobic materials have been widely studied due to their excellent anti-icing effect. Superhydrophobic surfaces refer to surfaces with contact angles greater than 150° and rolling angles less than 10°. Studies have found that lotus leaves have su...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C26/00B23K26/352C09D1/00
CPCB23K26/352C09D1/00C23C26/00
Inventor 刘艳杨桂英徐倩闫秀林陈辉
Owner SOUTHWEST JIAOTONG UNIV
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