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

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. [...

AI Technical Summary

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 corrosion, no sticking to molds, etc. in industrial auto parts, electromechanical parts , mechanical parts, and electrical components have been widely used, but their corrosion resistance and wear resistance are poor. It has been reported in the literature that the superhydrophobic surface constructed on the surface of metal materials has shown good corrosion resistance. For its anti-friction And wear resistance research, there is no relevant literature

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