Nano grain size yellow tungsten oxide is a infrared heat insulation material, which may be used in architectural glass with high transparency and thermal conductivity, thereby it is necessary to impart the glass with thermal effects and ensure the visible light transmittance of the glass.
The yellow tungsten oxide heat-insulating material may be coated on the surface of the glass to form a uniform transparent coating film. And the nano-conductive particles in the coating film contain a certain concentration of electron holes, which cause absorption of free carriers. It is embodied in the solar spectrum:
1. The transmittance of the coating film is not affected in the visible light region with a wavelength of 400~800nm;
2. The absorption rate of the coating film is about 90% when the wavelength is in the ultraviolet region of less than 400nm;
3. In the near-infrared region with a wavelength of 800~2500nm, the frequency of incident light from the sun is higher than the vibration frequency of the nano-conducting particles in the coating film, causing high reflection of ions, and the amount of solar energy distributed in the infrared region is about 43%.
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