Method for making hydrophobic and oleophobic easy-to-clean glass

Abstract

The invention belongs to the technical field of coated glass making, and in particular relates to a method for making hydrophobic and oleophobic easy-to-clean glass. The method comprises the following steps: mixing organosiloxane with absolute ethyl alcohol, adjusting the pH value of a solution, adding deionized water to promote hydrolysis, further adding fluorosilicone modified silicon dioxide, stirring to implement hydrolysis so as to form modified silica gel, leaving to stand, aging, and pouring the silica gel into deionized water which is violently stirred, thereby obtaining an aqueous hydrophobic and oleophobic easy-to-clean coating. The aqueous hydrophobic and oleophobic easy-to-clean coating prepared with the method is environmental-friendly since the amount of an organic solvent is reduced; when the surface of glass is coated by the prepared aqueous hydrophobic and oleophobic easy-to-clean coating, the solvent is slow in volatilization speed, so that the coating surface thickness uniformity is improved, and a phenomenon that a hydrophobic coating surface has spots as the solvent is volatilized too rapidly is avoided.

Description

technical field [0001] The invention belongs to the technical field of coated glass manufacturing, and in particular relates to a method for preparing hydrophobic, oil-repellent and easy-to-clean glass. Background technique [0002] Easy-to-clean glass uses coating modification on the glass surface to reduce the surface tension and surface energy of the glass. When water droplets and organic oils and other substances come into contact with the glass surface, the contact angle becomes larger, and the water droplets or oils form droplets, which roll freely on the glass surface. . [0003] At present, fluorosiloxane materials are mainly used to modify the glass surface to reduce the surface tension of the glass. The main method of coating modification is to coat the fluorine-containing silicone organic solvent on the glass surface by spraying, wiping, scraping, etc., among which organic Solvents are mainly alcohols. Compared with the three coating modification methods of spra...

AI Technical Summary

Problems solved by technology

Compared with the three coating modification methods of spraying, wiping and scraping, wiping and scraping are more likely to produce rainbow phenomena, and spraying is more likely to cause pitting and affect the appearance of the glass, which is the main reason for this result. It is because the organic solvent volatilizes quickly, which leads to the fast curing of the film surface, which makes it impossible to carry out secondary coating. In the coating process, repeated coating will produce obvious defects.