Preparation method of zinc or zinc alloy super hydrophobic surface with antifriction and wear-resisting property

A super-hydrophobic surface and wear-resistant technology, which is applied in the field of super-hydrophobic surface preparation of metals, can solve the problems of poor corrosion resistance and wear resistance, low melting point, heavy specificity, etc., and achieve excellent anti-friction and anti-wear properties , easy industrial production, simple preparation method

Inactive Publication Date: 2011-07-27
QINGDAO TECHNOLOGICAL UNIVERSITY
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Problems solved by technology

However, the practical application of superhydrophobic surfaces is still very limited. One of the important reasons is that most of the superhydrophobic surfaces obtained so far have poor mechanical properties.
[0003] Metal materials such as zinc or zinc alloys have the advantages of large specific gravity, low melting point and good casting performance, and can be used for surface treatment: no iron absorption during melting and die casting, no corro

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  • Preparation method of zinc or zinc alloy super hydrophobic surface with antifriction and wear-resisting property
  • Preparation method of zinc or zinc alloy super hydrophobic surface with antifriction and wear-resisting property

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Embodiment

[0017] refer to figure 1 , the preparation method of the zinc or zinc alloy superhydrophobic surface with antifriction and wear resistance of the present embodiment, comprises the following steps:

[0018] 1. Ultrasonic clean the zinc plate (99.9% purity) with absolute ethanol and deionized water in sequence to remove the grease on the sample, and dry it with nitrogen before use.

[0019] 2. Soak the above-treated zinc plate in a solution containing 4% N, N-dimethylformamide (volume ratio), and heat it in an oven at a constant temperature of 65°C for 24 hours. After the zinc flakes were taken out, they were washed with deionized water and absolute alcohol, and dried with nitrogen gas.

[0020] 3. Soak the above-mentioned treated zinc flakes in 0.01mol / L stearic acid ethanol solution at room temperature for 24 hours. After taking them out, wash them with absolute ethanol and dry them with nitrogen to obtain a superhydrophobic surface.

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Abstract

The invention discloses a preparation method of zinc or zinc alloy super hydrophobic surface with antifriction and wear-resisting property. The method comprises the following steps: firstly cleaning the surface of metal by absolute ethyl alcohol and deionized water; then dipping the metal in N,N-dimethylformamide solution for 8-24 hours with constant temperature, cleaning and drying, wherein the volume ratio concentration of N,N-dimethylformamide is 2-5%, and the temperature is 40-80 DEG C; and finally, dipping the metal in fatty acid ethanol solution with the concentration being 0.001-0.01M and the temperature being 20-60 DEG C for 8-24 hours, taking out the metal, then cleaning the metal by absolute ethyl alcohol, and drying the metal by nitrogen, thus obtaining super hydrophobic surface. The zinc or zinc alloy super hydrophobic surface can be stable for long time, and can keep good super hydrophobicity, antifriction and wear resistance performances after the mechanical bending deformation.

Description

technical field [0001] The invention belongs to a method for preparing a super-hydrophobic surface of a metal, in particular to a method for preparing a super-hydrophobic surface with friction-reducing and wear-resistant properties on a metal zinc or zinc alloy substrate. Background technique [0002] In recent years, the research on super-hydrophobic surfaces has attracted widespread attention. The so-called super-hydrophobic surface refers to the contact angle with water greater than 150°. ° and the roll angle is less than 2 ° s surface. Superhydrophobic materials have very low surface free energy and good anti-adhesion properties, so they show good application prospects in the fields of self-cleaning materials, microfluidic devices, and fluid drag reduction. However, the practical application of superhydrophobic surfaces is still very limited. One of the important reasons is that most of the superhydrophobic surfaces obtained so far have poor mechanical properties. ...

Claims

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Application Information

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IPC IPC(8): B05D5/08
Inventor 万勇王中乾刘义芳
Owner QINGDAO TECHNOLOGICAL UNIVERSITY
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