
Tungsten oxide is a type of NIR-shielding material with high transparency although it is slight blue in color, which can be applied for the production of thermal insulation film. Study on Tungsten Oxide/ Solvent type Polyurethane Composite Film The composite heat insulation film can be prepared by using tungsten oxide (WO3) powder and solvent type polyurethane (PU) as raw material. After the dispersed WO3 suspension and the PU were degassed and stirred, the composite film was formed by using a…