It has been found that the natural rubber compound with CBS accelerator shows the fastest sulfur vulcanization rate and the lowest activation energy (Ea) because CBS accelerator produces higher
sulfenamide (CBS) in conventional vulcanization system of natural rubber (NR). Investigations were made on the rheological and mechanical properties of the vulcanizate cured with the binary system. 2.ExperimentalMethod 2.1. Materials. NR (RSS 3) was purchased from the Teck Bee Hang, and the CBS accelerator (Vulcacit, CZ) was obtained from Bayer AG.
