Nano Cesium Tungsten Bronze Applied for Bedroom Thermal Insulating Glass Coating

Nano cesium tungsten bronze, CsxWO3, which is mainly used for preparing bedroom thermal insulating glass coating, is an ideal near infrared (NIR) shielding material for solar filters. While the CsxWO3 nanoparticle dispersed resin film exhibits obvious photochromic behavior under ultraviolet (UV) illumination, which severely hinders the commercial application of CsxWO3.

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In this regard, some experts successfully prepared the CsxWO3/SiO2 composite resin coating with excellent NIR shielding ability and outstanding optical stability under strong UV illumination by combining an ultraviolet-absorbing agent (UVA) with SiO2. The roles of UVA and SiO2 in preventing the photochromic behavior of the CsxWO3/SiO2 composite resin coating were vital, reducing the photochromic reaction rate by UVA and limiting the photochromic reaction areas by SiO2. In a word, the experts provide a new solution for eliminating the photochromism of a CsxWO3-based resin film and it may have practical application in architecture and automobiles.

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