Nano hydrophobic and oleophobic coating and preparation method of coating

Abstract

The invention relates to a nano hydrophobic and oleophobic coating and a preparation method of the coating. The coating comprises the following components in percentage by weight: 70-75% of ethyl alcohol, 5-10% of isopropanol, 10-25% of a siloxane oligomer and the balance of ethereal sulfate. The preparation method of the coating comprises the following steps: fully mixing the components to obtain a solution and wiping the surface of the glass by using a solution-containing non-woven fabric; placing the glass, and repeatedly wiping the surface by using the same non-woven fabric in a ring manner; then removing the residual solution on the surface of the glass by using a clean non-woven fabric, subsequently polishing the surface of the material, leaving the polished surface to stand, and then obtaining the coating on the surface of the glass. According to the invention, the contact angle between the coating and water is increased, so that the drainage effect is remarkably improved; only little water is needed for washing the coating; besides, the sliding angle of the water is reduced, so that the surface of the glass is more easy to wipe; the use of harmful cleaning agents is eliminated; the nano hydrophobic and oleophobic coating has a good application prospect.

Description

technical field [0001] The invention belongs to the field of self-cleaning glass films, in particular to a nano-hydrophobic and oleophobic coating and a preparation method thereof. Background technique [0002] From the moment of production, glass has been exposed to the air. Dust, moisture, acid and alkali and physical attack in the air will cause damage to glass. In the construction industry, automobile industry and people's daily life, the problem of stains in glass hazards has increasingly become the focus of attention. Under this trend, self-cleaning glass has emerged as the times require. Self-cleaning glass refers to ordinary glass that is treated by special physical or chemical methods to produce unique physical properties on the surface, so that the glass can no longer be kept clean for a long time by traditional manual scrubbing methods. Self-cleaning glass can be divided into hydrophilic self-cleaning glass and hydrophobic self-cleaning glass according to hydroph...

AI Technical Summary

Problems solved by technology

Among them, the chemical vapor deposition method has high requirements for equipment and high investment costs, resulting in high production costs; the sol-gel high-temperature sintering method may cause uneven gel coating in large-scale production, and the heat treatment process of gel preparation The control of medium parameters has too much influence on the properties of the gel; the magnetron sputtering method is not yet suitable for mass production, and the coating efficiency is low, and the film thickness is relatively small, which cannot reach the thickness required for photocatalysis

However, the hydrophobic angle of the film layer of hydrophobic glass gradually decreases with the passage of time, and the timeliness is poor. It cannot guarantee the self-cleaning effect of the glass product during its service life, so it cannot guarantee the true self-cleaning.

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