硫化体系对氢化丁腈橡胶/氯丁橡胶并用胶性能的影响

摘要

The influence of curing systems on the curing behavior,physical properties and thermal aging property of HNBR/CR blend (blend ratio 70/30) was investigated. The results showed that, when the curing system of main curing agent DCP and co-curing agent TAIC was used,the scorch time of HNBR/CR blend was longer, elongation at break was higher, tensile set at break was lower, and thermal aging property was better. When the addition levels of DCP and TAIC were 5 and 3 phr respectively,the curing rate of HNBR/CR blend was high,and processing safety,oil resistance,comprehensive physical properties and thermal aging property were good.%研究硫化体系对氢化丁腈橡胶(HNBR)/氯丁橡胶(CR)(并用比70/30)并用胶硫化特性、物理性能和耐热老化性能的影响.结果表明:采用硫化剂DCP/助硫化剂TAIC硫化体系时,HNBR/CR并用胶的焦烧时间较长,拉断伸长率较大,拉断永久变形较小,耐热老化性能较好；当硫化剂DCP用量为5份、助硫化剂TAIC用量为3份时,并用胶的硫化速率较大,加工安全性、耐油性能、综合物理性能和耐热老化性能较好.