Nano cesium tungsten bronze, or nano Cs0.33WO3 powder, may be applied for preparing thermal insulation masterbatch, which is a new type of environmentally-friendly thermal-insulating masterbatch for preparing thermal insulation film, and thus be applied to architectural glass such as office buildings. It is well known that even if ultraviolet rays account for only 3% of sunlight, it will cause fading of articles and aging of plastic rubber parts. More seriously, excessive UV exposure can also cause skin cancer.
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Therefore, ordinary building glass must be treated to have heat insulation performance such as applying with a thin transparent heat-insulating film. According to experts, the heat insulation film of nano cesium tungsten bronze particles can block 99% of ultraviolet rays, which can prevent skin damage and reduce the aging of the building interior articles. People who have used sunscreen are familiar with the SPF sunscreen value. The SPF value of sunscreen is generally between 20 and 60. The new environmentally friendly film of Cs0.33WO3 can block 99% of UV rays, which is equivalent to many times that of SPF's sunscreen value. In other words, the thermal insulation film of cesium tungsten bronze nanoparticles not only keeps us away from ultraviolet rays, but also protects our skin from the harmful chemical components in sunscreen products.
