Nano grain size yellow tungsten oxide is a type of transparent thermal insulation nanopowder. Why it is said to be transparent? Isn’t it yellow in color? Right, yellow tungsten oxide is yellow in color, just as its name suggested. While it is transparent when it is applied in thermal insulation film, more exactly, in thermal insulation glass. In other words, it has high transparency, implying high light transmittance, mainly for visible light.
Certainly, it is due to the fact that the thermal insulation powder is selective for the solar spectrum, one of which is the performance of the above-mentioned - high visible light transmittance, and the other is the absorption of ultraviolet light, thereby achieving the effect of blocking infrared heat radiation.
As you may have known, glass is widely used as a transparent material in buildings. It is not only a good transparent material, but also a good thermal conductive material. Therefore, in order to ensure the lighting of the glass and impart the glass of heat insulation performance, yellow tungsten oxide heat-insulating coating may be applied on the surface of the glass to form a uniform transparent coating film, thereby realizing the ding of transmitting visible light and shielding ultraviolet light.
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