Super hydrophobic aluminium alloy surface with wear resistance and heat resistance and preparation method thereof

An aluminum alloy surface, super-hydrophobic technology, applied in metal processing equipment, abrasives, manufacturing tools, etc., can solve problems such as poor durability, achieve good hydrophobic performance, improve heat resistance, and reduce environmental pollution

Active Publication Date: 2019-05-21
SOUTHWEST JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] Aiming at the poor mechanical durability of the superhydrophobic surface in the prior art, the present invention provides a superhydrophobic aluminum alloy surface with wear resistance and heat resistance and a preparation method thereof, which can improve the working environment adaptability of the superhydrophobic surface ( properties such as mechanical durability and thermal stability), broaden the application market of superhydrophobic surfaces

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  • Super hydrophobic aluminium alloy surface with wear resistance and heat resistance and preparation method thereof
  • Super hydrophobic aluminium alloy surface with wear resistance and heat resistance and preparation method thereof
  • Super hydrophobic aluminium alloy surface with wear resistance and heat resistance and preparation method thereof

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Embodiment 1

[0034] This embodiment provides a method for preparing a superhydrophobic metal aluminum alloy surface, the preparation method steps are as follows:

[0035] (1) Aluminum alloy surface pretreatment: sandblasting the aluminum alloy with a size of 20×20×1cm, and the size of the gravel is 24 mesh, put the sandblasted samples into acetone and ethanol solutions for ultrasonic cleaning, The time is 10 minutes.

[0036] (2) Soaking: immerse the cleaned aluminum alloy block in 0.01 mol of perfluorooctanoic acid solution, the ambient temperature is 95° C., and the immersion time is 4 hours.

[0037] (3) Take out the sample after immersion, and dry it in an oven for 1 hour to obtain a superhydrophobic aluminum alloy surface.

[0038] The SL200B contact angle measuring instrument was used to measure the contact angle on the surface of the above-mentioned superhydrophobic aluminum alloy, and 5 points were uniformly selected on the surface, and the average value of the measured contact an...

Embodiment 2

[0040] This embodiment provides a method for preparing a superhydrophobic metal aluminum alloy surface, the preparation method steps are as follows:

[0041] (1) Aluminum alloy surface pretreatment: sandblasting the aluminum alloy with a size of 20×20×1cm, and the size of the gravel is 24 mesh, put the sandblasted samples into acetone and ethanol solutions for ultrasonic cleaning, The time is 10 minutes.

[0042] (2) Soaking: Soak the etched aluminum alloy block into 0.01 mol of perfluorooctanoic acid solution, the ambient temperature is 95° C., and the soaking time is 6 hours.

[0043] (3) Take out the sample after immersion, and dry it in an oven for 1 hour to obtain a superhydrophobic aluminum alloy surface.

[0044] The SL200B contact angle measuring instrument was used to measure the contact angle on the surface of the above-mentioned superhydrophobic aluminum alloy, and 5 points were uniformly selected on the surface, and the average value of the measured contact angle ...

Embodiment 3

[0046] This embodiment provides a method for preparing a superhydrophobic metal aluminum alloy surface, the preparation method steps are as follows:

[0047] (1) Aluminum alloy surface pretreatment: sandblasting the aluminum alloy with a size of 20×20×1cm, and the size of the gravel is 24 mesh, put the sandblasted samples into acetone and ethanol solutions for ultrasonic cleaning, The time is 10 minutes.

[0048] (2) Soaking: Soak the etched aluminum alloy block into 0.01mol perfluorooctanoic acid solution, the ambient temperature is 95° C., and the soaking time is 8 hours.

[0049] (3) Take out the sample after immersion, and dry it in an oven for 1 hour to obtain a superhydrophobic aluminum alloy surface.

[0050]The SL200B contact angle measuring instrument was used to measure the contact angle on the surface of the above-mentioned superhydrophobic aluminum alloy, and 5 points were uniformly selected on the surface, and the average value of the measured contact angle is sh...

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Abstract

The invention belongs to the field of new materials, and relates to the technical field of surface modification, and particular to a super hydrophobic aluminium alloy surface with wear resistance andheat resistance and a preparation method thereof. Aiming at the problem of poor mechanical durability of a super hydrophobic surface in the prior art, the technical scheme of the invention is that thepreparation method comprises the following steps: (1) performing pre-treatment on an aluminium alloy surface, namely, performing the pre-treatment on the aluminium alloy surface through a sand blasting process, and cleaning and drying the pre-treated aluminium alloy sample; and (2) soaking, namely, soaking the aluminium alloy sample which is treated by the step (1) in a perfluorooctanoic acid solution for performing surface modification, and drying to obtain the super hydrophobic aluminium alloy surface finally after the surface modification is completed. The preparation method is applicableto preparing super hydrophobic aluminium alloy materials in various fields, such as aerospace, navigation, bridges and buildings.

Description

technical field [0001] The invention belongs to the field of new materials and relates to the technical field of surface modification, in particular to a superhydrophobic aluminum alloy surface with wear resistance and heat resistance and a preparation method thereof. Background technique [0002] Alloy materials have excellent electrical conductivity, thermal conductivity and corrosion resistance, and are widely used in various fields such as aerospace, navigation, bridges, construction, etc. For example, the fuselage of an aircraft is often made of aluminum alloy materials. However, aluminum alloy products will also be oxidized during use, and the oxide film on its surface is very easy to absorb pollutants such as oil stains and pigments, which will affect the application of aluminum alloy products in real life. Therefore, the research on improving the anti-pollution ability of the surface of aluminum alloy products is extremely important. [0003] A superhydrophobic surf...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C22/56C23C22/78B24C1/06B24C11/00
Inventor 赵婧孙若愚李贞莫继良潘亚嘉罗大兵
Owner SOUTHWEST JIAOTONG UNIV
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