Tungsten trioxide may be used to prepare a new type of environmentally friendly anti-UV masterbatch, which does not contain toxic and harmful substances with an effective solid content of 5% and a haze of 1%. Such masterbatch absorbs UV light from 280nm to 400nm, thereby reducing the possibility of people being exposed to the ultraviolet rays.
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Short-wave ultraviolet light damages DNA. For humans, suntan and sunburn are familiar effects of exposure of the skin to UV light, along with an increased risk of skin cancer. However, ultraviolet light is also responsible for the formation of bone-strengthening vitamin D in most land vertebrates, including humans. The UV spectrum thus has effects both beneficial and harmful to life. So, we need to shield most of the ultraviolet light in the sunlight, but not all the UV light. And tungsten trioxide anti-UV masterbatch is such a heat insulating masterbatch that can shield most of the UV light. The ultraviolet blocking rate is more than 99%.
