
Blue tungsten oxide nanopowder may be applied for preparing nano-ceramic color master, and therefore be applied to produce nano thermal insulation film. The obtained thermal insulation material has a visible light transmittance of more than 75%, an infrared light blocking rate of 95~99.9%, and an ultraviolet light blocking rate of 98% or more. Blue tungsten oxide may be prepared by using APT as raw material and calcing under hydrogen atmosphere. In order to prepare blue tungsten oxide with more cracks…