Super-hydrophobic surface coating and preparation method thereof

Abstract

The invention relates to a super-hydrophobic surface coating and a preparation method thereof, and belongs to the field of polymer coating materials. The super-hydrophobic surface coating is obtainedby spraying a super-hydrophobic solution containing epoxy resin, an epoxy curing agent, an epoxy solvent and carbon nanotubes on a substrate material. The super-hydrophobic surface coating has the advantages that materials are easy to obtain, self-cleaning is achieved, and icing is prevented, the preparation technology is simple, and large scale production and application are facilitated.

Description

technical field [0001] The invention belongs to the field of polymer coating materials, and in particular relates to a superhydrophobic surface coating and a preparation method thereof. Background technique [0002] In recent years, under the inspiration of "biobionics", superhydrophobic surfaces have attracted the interest of a large number of researchers. Superhydrophobic surface has broad application prospects in self-cleaning, anti-fog, anti-icing, anti-fouling, anti-corrosion, drag reduction and other fields, and is an important surface protection technology. It is generally believed that the surface of materials with water contact angle θ<90° is hydrophilic, the surface of materials with θ>90° is hydrophobic, and the surface of materials with θ≥150° is defined as a superhydrophobic surface. Therefore, superhydrophobic technology is applied to metal surface protection The field is an important breakthrough with broad development prospects. [0003] The superhydr...

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Problems solved by technology

[0003] The superhydrophobic surface is composed of micron and nanoscale rough surface structures, so most of them have low mechanical strength. When damaged by external force, the surface hydrophobicity decreases, the internal integrity is damaged, cracks and other defects occur, and the protection ability is reduced. reduce

In addition, in terms of technical methods, many methods for preparing superhydrophobic materials still have expensive raw materials, complicated steps, and poor repeatability, such as etching method, conversion film method, template method and other commonly used superhydrophobic surface or coating preparation technologies. It is only suitable for laboratory research and cannot be used to meet the needs of large-scale preparation in industrial production

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