正交设计法优化三元乙丙橡胶/丙烯酸酯橡胶并用胶的硫化体系

Optimization on Curing System of EPDM/ACM Blends by Orthogonal Design Method

采用正交设计法研究硫化剂DCP/TCY并用硫化体系中硫化剂和促进剂用量对三元乙丙橡胶(EPDM)/丙烯酸酯橡胶(ACM)并用胶物理性能的影响。结果表明:硫黄和氧化锌用量对EPDM/ACM并用胶拉伸强度有显著影响,硫化剂DCP用量对拉伸强度有一定影响;硫化剂DCP、TCY和硫黄用量均对撕裂强度有显著影响,氧化锌用量对撕裂强度有一定影响;硫化剂DCP、促进剂DM和氧化锌用量对并用胶的耐热老化性能有影响;在正交设计试验范围内,并用胶综合性能较好的优化配方为:硫化剂DCP 3,硫化剂TCY 2,硫黄0.3,促进剂DM 0.25,氧化锌5。

The effects of addition levels of curing agent and accelerator of DCP/TCY curing system on the physical properties of EPDM/ACM blend were investigated by using orthogonal design method.The results showed that,the addition levels of sulfur and zinc oxide had very significant effect on the tensile strength of EPDM/ACM blends,and the addition level of curing agent DCP also had some influence on it.The addition levels of DCP,TCY and sulfur had very significant effect on the tear strength of the blends,and zinc oxide showed certain influence on it.In addition,curing agent DCP,accelerator DM and zinc oxide had influence on the aging resistance.The optimized curing system was as follows：curing agent DCP 3,curing agent TCY 2,sulfur 0.3,accelerator DM 0.25,and zinc oxide 5.