VUlCAnIZATIOn MATERIAlS acceleratorsand acceleratorsystems PartI:PrimaryAccelerators Sulfur, by itself, is a slow vulcanizing agent. With high temperatures and long heating periods, one obtains unsatisfactory crosslinking efficiency with unsatisfac-tory strength and aging properties. Only with vulcanization accelerators can the
1 Indonesian Rubber Research Institute, Box. 16151, Bogor, Indonesia Abstract: The mechanical properties and n-pentane resistant of carbon black filled natural rubber (NR) vulcanizate with semi efficient (SEV), efficient (EV) and the donor sulfur curing system was studied through experimental approach.