Nano cesium tungsten oxide powder may be made into a new type of environmentally-friendly thermal insulation coating for use on heat insulating window glass. Regarding the thermal insulation mechanism of such nano-inorganic transparent materials, some experts have shown that the shielding effect is based on the absorption of infrared light. Some experts have conducted long-term tracking tests on the thermal insulation properties of the thermal insulation coating of cesium tungsten oxide nano particles and characterized its transmittance and reflectivity in the wavelength range of 300-2500nm. Experts have found that the thermal insulation of the nano-coating of cesium tungsten oxide is mainly due to the absorption performance of near-infrared light, with an average absorption rate of 86% and a reflection of only 4.5%.
Certainly, there are many other kinds of heat insulation films for heat insulation glass in the market. They also obtain the effect of heat insulation mainly by absorbing infrared light. However, these films will heat up significantly under the illumination of sunlight. While the heat insulating film of cesium tungsten oxide not has such disadvantage.
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