A Novel Continuous Kynar~R PVDF Foam Concentrate and Application Developments

摘要

Kynar~R PVDF and Kynar Flex~R PVDF have long been used for many extrusion applications. The need for lighter weight, more flexible product has been of interest for some time, but the lack of the ability to foam PVDF for continuous products has always been an issue. Several batch processes for producing PVDF foam articles currently exist, but filling the need for continuous articles such as plenum rated wire, tube, pipe, film, and stock shapes has continued to be a challenge. Research organizations and industry experts have made several failed attempts to be able to develop a robust foaming mechanism and process for PVDF resins. Finally, Arkema has developed a suitable chemical foam concentrate as well as a robust processing method for many continuous Kynar~R PVDF applications of infinite length.