WO3 may be applied for producing window heat insulation film. The raw material used is WO3 nanopowder, which is a nano heat insulation material. And it is the transparent thermal insulation coating of tungsten trioxide nanoparticles that play a role of high heat insulation and high visible light transmittance. Also, such coating is convenient to construct – it is easy to rebuild the existing glass, the bonding strength is large, the drying is fast, no splicing is required, the molding is one time, the construction period is short. Besides, the construction process does not affect people's normal life.
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The tungsten trioxide nano heat insulation material is a material with special spectral selectivity, that is, with the characteristics of high shielding ratio in the infrared region, high transmittance in the visible region, and high absorption rate in the ultraviolet region. Using these properties of tungsten trioxide nano material, the nano transparent thermal insulation coating may be prepared with high heat insulation performance and high transparency. And therefore the WO3 nano transparent heat-insulating coating may be applied to the surface of the building glass to form a thermal insulating glass, which can effectively shield ultraviolet rays and infrared rays, and can not affect the transmission of visible light, thereby ensuring sufficient indoor lighting.
