Violet Tungsten Oxide Nanoparticles Applied for Glass Curtain Wall Heat Insulation Coating

Violet tungsten oxide nanoparticles may be used to produce a transparent heat insulation coating for applying to glass curtain wall, which is environmentally friendly with long using life. And the common glasses applying with such coating are energy saving glasses. For the raw material, the experts said that nano violet tungsten oxide is a type of tungsten oxides, and is also a semiconductor material. It is blue violet in color. Experts observed the transmission and absorption spectra of the colloid of tungsten oxide nano powder before and after reduction and found that:

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The tungsten oxide nano particles maintain high transmittance for visible light (380-780nm) and near-infrared light (780-2100nm) without being subjected to reduction treatment. However, after the reduction treatment, the transmittance of the near-infrared light has undergone a significant change, and the transmittance thereof has been greatly reduced. The absorption of the tungsten oxide nanoparticles after reduction is remarkably enhanced, particularly in the bands of 1400-1600nm and 1900-2200nm.

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