The third monomer is an important characteristic of EPDM rubber, as it directly influences the mechanical and thermal properties of the material. Peroxide vulcanization is often used as a curing system. Furthermore, it increases lifetime and offers dynamic mechanical properties and scorch time lower than sulfur systems. Here, we report the influence of dipentamethylene thiuram tetrasulfide and HVA-2 (N,N-m-phenylene bismaleimide) on peroxide vulcanization at different ENB content on EPDM rubber to reach an ideal condition for the reduction of vulcanization scorch time and improve the its mechanical properties. Tensile strength was highly affected by SDS formulation, increasing to 10 MPa for ENB1.8% and 15 MPa for ENB4.9% and ENB8.5%. Moreover, elongation at break increased from 398 to 650% for ENB1.8%, from 260 to 433% for ENB4.9% and from 290 to 408% for ENB8.5%. Compression set of SDS system was also increased when different ENB contents were compared for a conventional vulcanization system. Tear strength of ENB4.9% and 8.5% enhanced from 25 to around 32 N/mm with the scorch delay system. These results are important for the improvement of gaskets of plate heat exchanger production.

第三单体是EPDM橡胶的重要特征，因为它直接影响材料的机械性能和热性能。过氧化物硫化通常用作固化体系。此外，与硫系统相比，它可以延长使用寿命并提供动态机械性能和缩短焦烧时间。在这里，我们报告了二甲基亚砜秋兰姆四硫化物和HVA-2（N，N - m（亚苯基双马来酰亚胺）在EPDM橡胶上以不同的ENB含量进行过氧化物硫化，从而达到减少硫化焦化时间并改善其机械性能的理想条件。拉伸强度受SDS配方的影响很大，对于ENB1.8％，拉伸强度增加到10 MPa，对于ENB4.9％和ENB8.5％，拉伸强度增加到15 MPa。此外，ENB1.8％的断裂伸长率从398％增加到650％，ENB4.9％的断裂伸长率从260％增加到433％，ENB8.5％的断裂伸长率从290增加到408％。当将常规硫化系统中不同的ENB含量进行比较时，SDS系统的压缩永久变形也增加了。借助焦烧延迟系统，ENB4.9％和8.5％的撕裂强度从25 N / mm提高到了约32 N / mm。这些结果对于改进板式换热器的垫片非常重要。