Water-resistant long-acting inorganic zinc oxide super-hydrophilic coating as well as preparation method and application thereof

Abstract

The invention belongs to the technical field of functional coatings, and particularly discloses a durable inorganic super-hydrophilic coating as well as a preparation method and application thereof. The durable inorganic super-hydrophilic coating is prepared from the following raw materials in percentage by mass: 30 to 60 percent of silicate, 5 to 25 percent of zinc oxide, 10 to 40 percent of water and 0.1 to 5 percent of a wetting agent. A coating layer formed by the durable inorganic super-hydrophilic coating prepared by the invention is a flat rigid coating layer, has good appearance, excellent antifouling self-cleaning and anti-microbial adhesion properties, and also has the characteristics of long-term underwater stability and high mechanical strength. The paint can be used for building outer walls, household inner walls and the like by utilizing the antifouling and self-cleaning characteristics of the paint, has excellent underwater oleophobic performance, and can be used in the fields of oil fields and oil-water separation.

Description

technical field [0001] The invention belongs to the technical field of functional coatings, and in particular relates to a water-resistant long-acting inorganic zinc oxide superhydrophilic coating and a preparation method and application thereof. Background technique [0002] With the rapid development of the field of special functional surfaces, super-wetting surfaces have gradually become one of its important components. Among them, the self-cleaning performance of super-hydrophilic surfaces in the air is the most prominent. Usually, the value of the contact angle of a liquid on a solid surface is used To characterize the wettability of a liquid on a solid surface. Superhydrophilic generally means that water droplets can completely infiltrate the surface of the material so that the contact angle is less than 10°. Most of the designs of super-wetting surfaces refer to many super-wetting phenomena in nature, and some existing researches on biomimetic materials are also insp...

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Problems solved by technology

[0004] Although the current organic superhydrophilic coatings have shown excellent self-cleaning properties in the fields of antifouling self-cleaning, anti-microbial adhesion, and anti-fog, the complexity of the preparation of micro-nano structures and the fragility of the structure, as well as the volatile organic The destructiveness of the body to the environment will limit its development in the field of self-cleaning

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