कोहरारोधी फिल्म का सिद्धांत

The hydrophobic anti-fog coating makes the surface of the object hydrophobic, and then uses the hydrophobic group factor in the anti-fog coating to repel the water molecules to increase the contact angle between the water molecules and the surface of the object, so that the water vapor gradually condenses on the surface of the object into a Water droplets with a large contact angle are difficult to stay on the surface of the object, and will continue to automatically slide down (that is, produce the "lotus effect"), so as to achieve the purpose of anti-fog or waterproof. Since the hydrophobic anti-fog coating uses the "lotus effect" to achieve anti-fog, as the water droplets continue to slide down, some irregular water marks will be left on the surface of the object, and these water marks will have some scattering effect on the incident light , more or less reduce the light transmittance of the object, affect people's sight, and the anti-fog effect will become worse, which has limitations.