Nano Particle Size Cesium Tungsten Oxide Applied for Near Infrared Shielding Material

Nano particle size cesium tungsten oxide may be used to prepare near infrared shielding material. Wherein, the raw material is cesium tungsten bronze nanoparticles, and the obtained material may be a heat insulating film, a heat insulating dispersion liquid, a heat insulating coating or the like. They can all be applied for the heat insulation of architectural glass. Nowadays, transparent insulation materials of cesium tungsten bronze nano particles are more and more widely used in the construction field. Therefore, the preparation of the cesium tungsten bronze nano powder is becoming more and more important.

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Experts said that from the preparation process and amplification production analysis: the preparation of Cs0.33WO3 particles using Na2WO4•2H2O and Cs2CO3 as raw materials requires the processes of resin exchange, hydrothermal synthesis, water washing and alcohol washing. The preparation process is non-polluting and the preparation process is simple, which is suitable for high volume production. Preparation of Cs0.33WO3 particles using WCl6 and CsOH•2H2O as raw materials requires the processes of hydrothermal synthesis, water washing and alcohol washing. HCl gas is produced during the preparation process, which has certain harm to the human body and the environment. This problem needs to be solved in mass production.

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