Cesium tungsten oxide particles, or cesium tungsten bronze particles, may be applied for producing thermal insulation dispersion, which is an environmentally friendly and transparent dispersion of high heat insulation performance. In other words, the obtained transparent aqueous phase nano dispersion of cesium tungsten bronze nanoparticles has good optical properties. More specifically, such dispersion has a visible light transmittance of 75% at 500nm, and a near-infrared light blocking ratio of up to 91% at 1000nm.
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Experts said that if the cesium tungsten bronze transparent aqueous phase nano dispersion with good optical properties is blended with an aqueous resin and coated on a building glass substrate, a transparent nano-composite coating material with near-infrared ray blocking effect can be prepared. The obtained coating material has environmental protection characteristics, unlike indium in ITO, which is harmful to human body in preparation and application. And the price of such coating is cheaper than ITO. Therefore, cesium tungsten bronze heat insulating material is more and more widely used in building glass.
