Method for preparing aluminum-based super-hydrophobic surface through one-step method

Abstract

The invention provides a method for preparing aluminum-based super-hydrophobic surface through a one-step method and belongs to the technical field of metal surface treatment. The method comprises thefollowing steps: preparing a sodium chloride water solution and a perfluorotetradecanoic acid ethanol solution; after mixing the two solutions, pouring the mixed solution into a hydrothermal reactionkettle; then vertically putting a pure aluminum sheet which is subjected to sand paper grinding and ultrasonic washing into the hydrothermal reaction kettle; after sealing, putting the hydrothermal reaction kettle into a constant-temperature box; after reacting for a period of time, taking out the aluminum sheet; and washing and drying to obtain the aluminum-based super-hydrophobic surface with amicro-nano structure. The method provided by the invention has the advantages of simple preparation and easiness for operation; the requirements on equipment are low, expensive equipment is not needed and experiment conditions are not harsh; large-area and low-cost preparation of the aluminum-based super-hydrophobic surface can be realized; the contact angle with water reaches 160 degrees and therolling angle is about 3 degrees; and the prepared aluminum-based super-hydrophobic surface has the characteristics of self cleaning, icing prevention, resistance reduction and the like.

Description

technical field [0001] The invention belongs to the technical field of metal surface treatment, and in particular relates to a method for preparing an aluminum-based superhydrophobic surface in one step. Background technique [0002] Surface wettability is a very important property of solid surface, which plays a very important role in industry, agricultural production and human's daily life. In the past ten years, inspired by the superhydrophobic properties of the surface of lotus leaves, people have carried out a lot of experimental explorations on the preparation and properties of superhydrophobic surfaces. Studies have shown that super-hydrophobic surfaces have excellent properties such as self-cleaning, anti-corrosion, drag reduction, anti-frosting, and antibacterial. , as well as water transport vehicles to reduce water resistance and reduce energy consumption have very broad application prospects. It is precisely because of these excellent properties of superhydroph...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the problems of harsh conditions, expensive equipment, and harmful raw materials in the prior art, and provide a method for preparing an aluminum-based superhydrophobic surface in one step. In this method, metal aluminum is put into an aqueous solution of sodium chloride and In the mixed solution of perfluorotetradecanoic acid alcohol solution, hydrothermal synthesis is carried out in a hydrothermal reactor to obtain an aluminum-based superhydrophobic surface with a rough structure and low surface energy