The reason why cesium tungsten bronze can be applied for preparing heat insulation window film is that the cesium tungsten bronze nano particles have high near-infrared shielding performance. And with the hope to increase the NIR shielding efficiency, some experts presented a facile synthesis method for cesium tungsten bronze powder and carried out the spectral measurements.
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The experts synthesized the cesium tungsten bronze powders by carbothermal reduction method using H2WO4 and Cs2CO3 as precursor materials. The optimum heat treatment conditions of the cesium tungsten bronze powders are 700°C for 5 hours on the basis of their crystallite size and compositions. Particle size reduction up to 100nm has been successively prepared by wet ball milling treatment for 1h with ZrO2 grinding beads of 50μm in diameter. Well, you know, the cesium tungsten bronze powder with nano particle size is a popular dingal material for preparing heat insulation window film, and these smart films have a wide application in the buildings and automobiles, for shielding heat and saving energy.
