Abstract

Solid surface wettability is one of the important characteristics. Artificial control and the preparation of solid surface wettability has become the focus of research, and gradually is applied in the defense, industry, agriculture and daily life and people in different fields. The surface of the surface of the water used performance by the contact Angle and the water more than 150 º, and rolling Angle is less than 10 º to said.

By surface wettability chemical composition and micro geometry structure decided together. So for the preparation and low surface of the free energy material is the preparation of the water meter superhydrophobic prerequisite. This article will use the full of carboxylic acid-all the fluorine to reduce surface free energy. We use ordinary engineering metal (zinc, aluminum and iron, nickel, etc) and alloy (Zn-Fe alloy and brass) through the in all the fluorine acid solution of electrochemical reactions successful preparation waterproof and oil out of the good of the double surface, through in the control chain long, all the fluorine acid concentration, the processing time, rough texture of different structure base can be realized. The results showed that the surface treatment of the dual structure is due to its special surface composition and the micro structure of the influence.

Key words: Superamphiphobic；Hydrophobic；wettability ； contact angle