Absorption of Water Vapor: Hydrophilic anti-fog films, through surface coating and curing, form a sponge-like structure that actively absorbs some of the water vapor on the contact surface. This absorption reduces excessive accumulation of water vapor on the object's surface, thus lowering the likelihood of fogging or condensation. For example, in high-temperature and high-humidity environments, the anti-fog film can absorb water molecules in the air, preventing them from forming droplets on lenses or glass surfaces.
Uniform Distribution of Water Vapor: The hydrophilic properties of the anti-fog film allow water vapor to spread evenly on the surface in molecular layer form before forming droplets upon contact with the film. This uniform distribution avoids the scattering effect of water droplets on light (ordinary water droplets cause incident light to refract in different directions, creating a blurred view), ensuring that light can directly penetrate the film layer and maintain the transparency of the object's surface. For example, in environments with large temperature differences, the anti-fog film allows water vapor to exist in the form of a transparent water film, rather than forming fog droplets that obstruct vision.
