CONGLOMERATE 3M says its Dynamar RA5300 process aid for fluroelastomer (FKM) compounds has been shown to perform at a higher level. It also shows potential as a replacement for conventional materials like carnauba wax. Capillary rheometry was used to compare the flow properties of each compound over a range of shear rates and processability of four compounds was evaluated for Garvey die extrusion. Additional processing comparisons were made via an injection moulding trial to evaluate flow, mould release and fouling.
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