Tungsten trioxide has special optical properties so that it may be used to prepare a smart window heat insulation coating. The obtained transparent coating may be applied to the surface of the glass to effectively shield the light waves in the ultraviolet band and the infrared band without affecting the daylighting, thereby achieving the effect of cooling. Also, it may slow down the aging and fading of the furniture articles.
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Such environmentally-friendly heat insulation coating can form a protective film on the surface of the glass, which may effectively block the transmission of sunlight and heat, prevent the sunlight from heating the glass, and reduce the heat transfer, thereby effectively achieving the effect of heat insulation and heat preservation.
This high-efficiency energy-saving coating can shield most of the harmful light waves. The UV blocking rate is over 97%. The penetration rate of infrared light at 370nm is only 8%. And therefore such coating of tungsten trioxide nano particles may prevent indoors curtains, carpets, furniture and various types of furnishings from aging, fading, and cracking.
