What are the functions of anti fog glasses? Anti fog glasses mainly play a role in preventing fog. In winter, people who wear glasses from outdoors to indoors often cannot see clearly because they are covered with a layer of water vapor. Anti fog glasses can effectively solve this problem. Inorganic anti fog mirrors generally apply a layer of anti fog film on the surface of glass to achieve the purpose of anti fog.
There are generally three types of inorganic anti fog lenses:
1. PVC resistance wire anti fog film
The material is polyvinyl chloride+resistance wire. The characteristics of this film include the addition of lead salt stabilizer during production, which is toxic, tends to soften when heated, becomes hard when powered off, becomes brittle, and is prone to aging. The entire anti fog film is connected in series as a heating wire, which is very thin. Once it breaks at any point, the entire anti fog film will be scrapped. Advantages: Good ductility and electrical insulation performance, convenient material selection, and affordable price. The overall service life of this film is 4-5 years.
2. PET resistance wire anti fog film
The material is polyester+resistance wire. This film is characterized by its smooth surface, non-toxic and environmental protection, heat resistance, abrasion resistance, corrosion resistance and aging resistance. The overall service life of this film is 8-10 years. At present, the best quality PET anti fog film on the market is Shanghai Xianbu Anti fog Film, followed by Shanghai Tianli Anti fog Film.
3. PET carbon fiber anti fog film
The material is polyester+carbon fiber. The characteristics of this film are that the production process is cumbersome, the construction period is long, and the cost is high. High toughness, tensile resistance, long service life (over 20 years), surface heating element, high temperature resistance, and resistance to oxidation. Multi line parallel connection, even if a point breaks, does not affect the anti fog performance of the entire film. The temperature can be adjusted independently within a certain range, which is not easy to deform or break, and can be reused. Due to the stability and long service life of this film, it is generally chosen for the decoration of high-end hotels. However, due to the complexity of material selection and processing, the price of this carbon fiber anti fog film is relatively high.
The above three types of anti fog films have good effects and each has its own color characteristics. You can choose according to your own actual situation.
