WO3 may be used to prepare an advanced dingal material - a thermal insulation coating for applying on architectural glass. It is said that this new type of building energy-saving coating tested by Building Materials Testing Center does not contain harmful substances such as benzene and formaldehyde, which is safe and environmentally friendly. Moreover, the transparent coating has the characteristics of excellent spectral selectivity, high visible light transmittance, short-wave ultraviolet shielding ability, high near-infrared shielding ratio, and strong far-infrared reflectivity. So, such coating may be applied to glass coating to achieve the effect of high transparency, high heat insulation and energy conservation.
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Specifically, the infrared shielding rate of the tungsten trioxide coating is as high as 70% or more. In other words, the coating has obvious sunscreen effect and heat insulation effect, which can reduce the energy consumption of air conditioning refrigeration, heating or indoor lighting, so, the indoor temperature is lowered, and thus the surface temperature difference of the exposed building may reach 10-12 ?C. Therefore, thermal insulation coating of tungsten trioxide nano particles is widely used in villas, sun rooms, office buildings, teaching buildings, hospitals, waiting rooms, restaurants, and factories, etc.
