Hydrophobic film-coating liquid and production process of anti-pollution anti-fingerprint film-coated layer prepared therefrom

Abstract

The invention relates to a hydrophobic film-coating liquid and a production process of an anti-pollution anti-fingerprint film-coated layer prepared therefrom. The hydrophobic film-coating liquid comprises 100 parts by mass of a fluorosiloxane, 0.1-0.5 part by mass of perfluoropolyether, 1-20 parts by mass of distilled water or deionized water, 10-50 parts by mass of an alcohol and 0.1-2 parts by mass of an inorganic acid. The production process of the film-coated layer comprises the following steps: a, firstly, cleaning a base material, and carrying out hydroxylation treatment on the surface of the cleaned base material; b, pouring the hydrophobic film-coating liquid into a spray coating device, putting the base material after the hydroxylation into the spray coating device, and carrying out a spray coating operation; c, putting the base material after spray coating into a baking oven, and baking with the baking temperature of 150 DEG C and the baking time of 30 minutes; and d, finally, taking out the baked base material, cooling for 10 minutes, and thus obtaining the base material having the anti-pollution anti-fingerprint film-coated layer. The film-coated layer has good anti-pollution anti-fingerprint performance and has good super-hydrophobic performance and wear-resisting performance.

Description

technical field [0001] The invention relates to the technology in the field of coating, in particular to a hydrophobic coating solution and a production process for the prepared anti-fouling and anti-fingerprint coating layer. [0002] Background technique [0003] The function of the anti-fouling and anti-fingerprint film layer is to reduce the surface energy of the surface of the object (such as glass or metal surface) to form a film layer with super-hydrophobic properties. There are two methods to change the surface energy of objects, one is the physical surface roughness modification method: according to the self-cleaning theory, the rougher the surface structure is, the better the hydrophobic self-cleaning effect can be produced, but the rough surface will cause serious damage to visible light. Scattering makes the coating non-transparent and reduces the mechanical properties such as adhesion and abrasion resistance. This method is not suitable for the current protecti...

AI Technical Summary

Problems solved by technology

There are two methods to change the surface energy of an object, one is the physical surface roughness modification method: according to the self-cleaning theory, the rougher the surface structure is, the better the hydrophobic self-cleaning effect can be produced, but the rough surface will cause serious damage to visible light. Scattering makes the coating non-transparent and reduces the mechanical properties such as adhesion and abrasion resistance. This method is not suitable for the current protective glass industry; another method is to add fluorine functional groups to the polymer chain. As the number of hydrogen atoms on the alkyl group is replaced by fluorine atoms increases, its surface energy also decreases. The material surface can constitute the material with the lowest surface energy and the highest water droplet tentacles, which is a hexagonal closest-packed molecular film formed by -CF3 , its contact angle can reach 120°, and the contact angle of all materials with flat surface structure and water will not exceed 120°, so generally fluorine-containing polymers have excellent hydrophobic properties, but there The van der Waals force is very weak, which will cause poor adhesion to the substrate and cannot be directly coated on the substrate

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