Method for constructing high-adhesion super-hydrophobic surfaces

Abstract

The invention relates to a method for constructing high-adhesion super-hydrophobic surfaces. The method includes steps of adding inhibitors into organic solvents, uniformly stirring the inhibitors, then adding precursors into the organic solvents and stirring the precursors to obtain inorganic nano-particle sol-gel; thoroughly cleaning base materials, then modifying the base materials by the aid of amorphous carbon to obtain modified base materials, carrying out dip-coating on the modified base materials in the inorganic nano-particle sol-gel and then heating the modified base materials to obtain base materials with modified composite membranes; annealing the base materials with the modified composite membranes to remove the amorphous carbon and then modifying the base materials with the modified composite membranes by the aid of substances with low surface energy to obtain the high-adhesion super-hydrophobic surfaces. The method has the advantages that the method is easy to implement and low in cost and is environmentally friendly and safe, environments can be protected, and obvious petal effects can be realized by the high-adhesion super-hydrophobic surfaces constructed by the aid of the method.

Description

technical field [0001] The invention relates to the field of surface treatment of functional materials, in particular to a method for constructing a highly adhesive superhydrophobic surface. Background technique [0002] Surface wettability is one of the important characteristics of solid surface, which is closely related to the roughness of solid surface and its surface energy. Wettability is generally measured by the contact angle of a droplet on a solid surface. A solid surface with a contact angle of less than 90° is called a hydrophilic surface, and a surface with a contact angle of less than 10° is a superhydrophilic surface; a solid surface with a contact angle greater than 90° It is called a hydrophobic surface, and the surface with a contact angle greater than 150° is called a superhydrophobic surface. [0003] As a special wetting surface, superhydrophobic surface has attracted much attention since its discovery in 2004. In nature, many plants, insects and animal...

AI Technical Summary

Problems solved by technology

However, the disadvantage of layer-by-layer self-assembly technology is that the steps are cumbersome, time-consuming and labor-intensive.

[0016] The preparation of the above-mentioned super-hydrophobic surfaces with high adhesion currently has problems such as the petal effect is not obvious, the preparation process is complicated, the chemical raw materials are expensive, or relatively fine templates are required or the super-hydrophobic performance is poor.

Images