A heat-insulating energy-saving film of tungsten oxide nanoparticles is a light blue smart film with high transparency, whose visible light transmittance is over 80% to meet the requirements of architectural lighting. Such heat-insulating film has high definition with a haze of less than 0.3%.

A heat-insulating energy-saving film of tungsten trioxide nanoparticles is a new type of environmentally-friendly and heat-insulating smart film, which has the advantages of no fading, high transparency, high definition, high heat insulation rate, anti-glare and good privacy. So, how to use thermal insulation film?

Tungsten oxide nanoparticles can be used to prepare a variety of transparent thermal insulation materials, such as thermal insulation films, thermal insulation dispersions and thermal insulation coatings. Regardless of the type of heat insulation material, transparent heat insulation glass can be obtained by applying these materials to building glass. And the obtained heat-insulating glass can absorb near-infrared rays and shield ultraviolet rays. Also, such smart glass is environmentally friendly and safe. In means that the glass will not pollute the environment without toxic substances.

The reason why tungsten trioxide nanoparticles can be used to obtain transparent heat insulation glass is because WO3 nano particles have special optical absorption properties. Some experts used chemical precipitation method to prepare nano tungsten trioxide powder, and reduced it with hydrogen-nitrogen mixed gas. Then a series of studies were carried out to find that: