Cesium Tungstate Applied for Transparent Nano Heat-insulation Film

Cesium tungstate, mainly Cs0.33WO3 nanopowder, is an excellent functional material that shows remarkable absorptions both in the near infrared and ultraviolet portions of spectrum, so that it is often applied for preparing transparent nano heat-insulation film.

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Some experts dispersed cesium tungstate nanoparticles into the solution of PVA, and prepared the films of different thickness on PET by rod coating. And the experts found that these Cs0.33WO3 films have excellent NIR and UV shielding performance under the irradiation of a halogen lamp, an incandescent light and an ultraviolet light source. Well, do you know how to prepare cesium tungstate nano powder into transparent heat insulation nano film? Firstly, prepare Cs0.33WO3 nanopowder into suspension solution, and the appropriate amount of PVA is added. It is heated and stirred into a gelatinous form, and finally coated on a PET film by coating rods of different specifications to obtain films with a thickness of 16 μm and a thickness of 50 μm. Finally, spectral measurements were performed by UV/VIS/NIR instruments.

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