Photochromic Material: Phosphotungstic Acid Applied for Heat Insulation Film

Phosphotungstic acid is an important raw material for the preparation of photochromic material such as heat insulation film. For the prepared thermal insulation film, experts said that the transparent film can prevent glare, giving the driver a clear view, ensuring the safety of driving. And it can also shield 90% of the ultraviolet rays, preventing the fading and aging of plastic items and rubber parts. In addition, the super glue of the smart film can also stick the broken glass together to prevent secondary damage to people.

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For such a car heat insulation film, the preparation of the following materials is indispensable. Preparation of A bottle (composite photochromic material), the phosphotungstic acid is formulated into 5-10 parts of a 5% aqueous solution of polyacid, and the prepared 1% aqueous solution of polyvinylpyrrolidone is added to the portion under stirring up to 100 copies. Preparation of B bottle (varnish), external. Preparation of a C bottle (detergent), using 100 parts of ethyl acetate.

So, how to use these materials? Under normal temperature conditions, the A bottle is sprayed to cover the surface of the automobile window with the photochromic material composed of the inorganic/polymer composite material. The B bottle is sprayed to form the window film to achieve the purpose of anti-glare, so that driver has a clear view to ensure the safety of driving. When changing the film, it can be cleaned with a C bottle.

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