Super hydrophilic anti-fogging coating

Abstract

The invention provides super hydrophilic anti-fogging coating, and specifically relates to the field of coating. The coating consists of, by mass in parts, 20-30 parts of modified acrylate resin emulsion, 10-20 parts of nano-silica, 30-50 parts of water, 8-10 parts of a film forming auxiliary, 5-7 parts of a dispersing agent, 6-8 parts of an anti-foaming agent, 1-2 parts of a levelling agent, 1-6parts of a photoinitiator, 4-6 parts of titanium dioxide, 2-5 parts of a surfactant and 1-3 parts of an antioxidant; and the modified acrylate resin emulsion is obtained by using a polyvinyl acetal product and cellulose mixture as a modifying agent and performing modification on acrylic resin emulsion. The coating can enhance the hydrophilicity of glass surfaces, so that water mist on the inner and outer sides of glass due to temperature difference can be effectively avoided, and anti-fogging effects can be greatly enhanced; and the coating is low in manufacturing cost, low in toxicity and environment-friendly.

Description

technical field [0001] The invention belongs to the field of coatings, in particular to a superhydrophilic anti-fogging coating. Background technique [0002] The temperature is low, and the indoor air temperature is high. When the water vapor in the air meets the cold glass, it will condense into small water droplets and attach to the surface of the glass; the main reason for the fogging of the glass is that the temperature difference between the inside and outside of the glass is too large ;Anti-fog coating is a coating in the form of a coating that has the function of preventing fog from condensing; the fog is composed of countless small water droplets. The hot air hits the cold object and condenses into small water droplets on its surface. The light hits the surface of the tiny water droplets and undergoes diffuse reflection, thereby reducing the light transmittance of the material and giving people the feeling of fogging. Therefore, the anti-fog coating makes the surfa...

AI Technical Summary

Problems solved by technology

Therefore, the anti-fog coating makes the surface of the substrate super-hydrophilic and increases the surface tension of water. Water cannot form water droplets on the surface of the substrate, but spreads flat on the surface of the substrate to form a water film to ensure that light passes through normally. Does not affect the line of sight, so there is an anti-fog effect; but the existing anti-fog coatings are relatively polluting and do not conform to the sustainable development direction advocated by the existing society;