The effects of the conventional vulcanization ( CV), semi-efficient vulcanization ( SEV), efficient vulcanization ( EV), especially the levels of sulfur and accelerator DM on the properties of NR/ BR/ TPI ( 40/ 40/ 20) blend were investigated. 研究了普通硫化体系(CV)、半有效硫化体系(SEV)和有效硫化体系(EV)对NR/BR/TPI共混物(共混比为40/40/20)性能的影响,特别是CV体系中硫黄和促进剂DM用量的影响。