Japan's Daicel-Evonik (Headquarters: Tokyo) announced on August 19, 2014 that it will launch a polyamide (PA12) for solar battery backplanes in Japan. It is characterized by its chemical resistance, moisture resistance, and heat resistance; because it can pass through acetic acid, it can reduce the amount of acetic acid used in the sealing material; it does not emit toxic gases when a fire occurs. Solar cell backsheets often use fluorine-based resins, but they will release fluorine compounds to the environment after they are discarded. Therefore, Daicel-Evonik stated that "PAs have been used instead of fluorine-based resins in foreign countries."
Figure: "VESTAMID" particles that can be used for solar cell backsheets
The new PA12 product name is "VESTAMID". There are two types of particulate "BS1231" used for the manufacture of co-extruded plates and film-shaped "PF-25", both having the above properties. Daicel-Evonik will exhibit this product at the second (Kansai) solar battery exhibition (3/5/2014, INTEX Osaka).
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