Tungsten trioxide for preparing nano heat insulating film is a new type of near-infrared absorbing material that has gained research interest. You know, the near-infrared (NIR) irradiation has a broad wavelength in the range of 780-2,500 nm.

Tungsten trioxide nanopowder applied for preparing explosion-proof heat insulation film is nano particle size tungsten trioxide doping with alkali metal element. And the film can satisfy the requirements of high heat shielding capability and high transparency.

Tungsten trioxide nanopowder with alkali metal element doping is widely used in the preparation of nano heat insulating film due to its excellent visible light transmittance and near-infrared light absorption properties. Wherein, the obtained transparent heat-shielding film has a transmittance of ultraviolet light of less than 1%, a transmittance of near-infrared light of less than 15%, and a transmittance of visible light of more than 70%.

Tungsten trioxide doping with alkali metal element is mainly applied for preparing a study thermal insulating film – a transparent heat-shielding film that can shield against infrared light. The infrared light shielding ability of such a smart film is excellent and the visible light transmission is greater than 70%.