Self-cleaning epoxy resin anti-fog coating

Abstract

The invention belongs to the technical field of chemical materials, particularly relates to a self-cleaning epoxy resin anti-fog coating, which has high transparency and is composed of epoxide resin, firming agent, hydrophilic high polymer, surface active agent, functional nano particles and the like according to a proper proportion. The coating can be applied on the surfaces of glass, plastics and other base materials, and has excellent anti-fog and self-cleaning effects, good weather resistance and long service life.

Description

technical field [0001] The invention belongs to the technical field of chemical materials, and in particular relates to a high-performance epoxy resin anti-fog coating. Background technique [0002] For a long time, transparent substrates have been widely used in people's production and life. However, in a high-humidity environment, water vapor in the air is likely to condense into fog or dew on the surface of these transparent substrates, resulting in a decrease in the light transmittance of the substrate and hindering the use of the substrate. The impact brought is not only damage to the appearance, but even people in production and life will be in danger, such as the turbid fog on the indicator lights, car lights, and car window glass, which can easily cause traffic accidents. In the past, the simple anti-fog method for mirrors was usually to add an electric heater to the back of the mirror to drive away the foggy moisture, but this method has considerable limitations. ...

AI Technical Summary

Problems solved by technology

Liu Guoxuan etc. copolymerized methyl methacrylate, butyl methacrylate, and acrylic acid, and added a small amount of initiator and surfactant (polyoxyalkylene ether, alkylbenzene sulfonic acid, etc.) to form an anti-fog coating. Hydrophilic polymer absorbs water, which not only reduces the anti-fog performance, but also causes cracks due to swelling and softening [Shanghai Paint, 2005(01): 31-33]

After exploration, Nippon Oils and Oils Co., Ltd. first coats the surface of glass, resin, and plastic with an organic peroxide base layer, and then coats a high-density polymer containing hydrophilic groups such as sulfonic acid groups or hydroxyl groups to form a firm chemical bond and realize A new semi-permanent anti-fog processing technology has been introduced, but the processing technology is very complicated, which is not conducive to industrialization [JP 55-154351]

Nissan Motor Company reported a hydrophilic coating film, coating a layer of composite film containing titanium dioxide and amorphous metal oxide on the outermost layer of the substrate, because the coating film contains photocatalytically active titanium dioxide, through the light Afterwards, it shows that it has super hydrophilicity, can decompose oil stains, and has self-cleaning properties, but the coating will lose its anti-fog performance after being placed in a dark room or other conditions that lack light for a long time [US 6071606]