High-temperature rolling mill - PR404110 - 2970 - W

Within the framework of the H2Go lead project, Fraunhofer UMSICHT intends to acquire a multi-roll mill for the production of continuously producible, electrically conductive thermoplastics. The highly filled polymers produced with the multi-roll mill are used as so-called bipolar plates (BPP) in energy storage devices and energy converters. The aim is to establish the process for series production of BPP. For this purpose, the powdered thermoplastics, filled with up to 85 wt.% powdered carbons, are melted in the calendering process in several kneading zones subjected to friction and rolled out to form a thin web (100 μm - 1000 μm) with a usable width of min. 250 mm, which is continuously drawn off at a speed of at least 1 m/min over one or more cooling rolls whose temperature can be individually adjusted. The production of BPP focuses on the use of fluorinated or sulfonated high-performance thermoplastics such as PVDF, PPS as well as PES, polyether ketones such as PEK, PAEK or PEEK, as well as liquid crystal polymers (LCP), which are used in polymer electrolyte membrane fuel cells (PEM FC) due to their high temperature resistance. The multi-roll mill for the continuous production of high-performance thermoplastic-based BPP is primarily designed for the processing temperature range of 360°C - 420°C, but is also intended to enable the processing of materials in the temperature range of 150°C - 360°C.