Cesium Tungsten Bronze Applied for Window Thermal Insulation Film

Cesium tungsten bronze is optimum for producing window thermal insulation film with high heat-shielding performance and high visible light transmittance. According to the experts, the composite layer-coated film can be prepared using a mixture of dispersed cesium tungsten bronze sol and acrylic UV-curing binder.

cesium tungsten bronze applied for window thermal insulation film image

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cesium tungsten bronze applied for window thermal insulation film picture

In this process, the rotating mixer was used, and the polyethylene terephthalate (PET, film thickness = 186 μm) substrate was coated using the bar casting method. The coated film was dried at 80°C for 1 min in a heating chamber and illuminated using UV-curing equipment at an intensity of 800 W/cm for 20 s. To produce the double layer-coated film, dispersed Cs0.33WO3 sol was first coated on PET substrate, and the UV binder was coated using the bar casting method. And the thickness was measured using the cross-sectional length of each film via scanning electron microscopy (SEM). The optical properties were examined using a UV/VIS/near-infrared (NIR) spectrophotometer in the range of 300 ~ 3,300 nm. The nanodistance of the internanoparticles was measured by a transmission electron microscope (TEM).

 

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