Tungsten oxide nanopowder may be used to prepare a new type of nano transparent thermal insulation coating, which can be applied to architectural glass to obtain a heat insulation film to shield most of the harmful ultraviolet rays of 0.20-0.38μm and infrared rays of 0.78-2.5μm.

Nano transparent thermal insulation coating of tungsten trioxide nanopowder has an ultraviolet shielding rate of over 99%. And the anti-UV performance of such coating is long-lasting. The formed tungsten trioxide smart film has excellent transparency. And the visible light transmittance is more than 70%. While the transparency varies depending on the light transmittance of the substrate.

WO3 can be used firstly as a special heat insulating medium for thermal insulation glass coating – a blue-black thermal insulation dispersion, which is then added to the resins to produce a new type of nano transparent thermal insulation coating with high shielding rate to near-infrared rays. And the obtained thermal insulation coating is mainly used for heat insulation and energy conservation of architectural glass to improve living comfort.

Yellow tungsten oxide may be applied for producing a nano transparent thermal insulation coating, which has the function of shielding ultraviolet rays, so it can be coated on the surface of the architectural glass for protecting indoor objects from UV rays, thereby improving the aging resistance of indoor articles and prolonging their service life. The heat-insulating coating also has high transparency so that it can realize the anti-UV and anti-aging function on the basis of retaining the original color and style of the substrate. In other words, the tungsten trioxide heat insulating coating is the perfect combination of decoration and functionality.