【摘要】 本研究基于ZnO/MgO–S复合硫化体系，系统考察了次磺酰胺类(CZ)、噻唑类(DM)、秋兰姆类(TMTD、TMTM)及叔胺类(ACT-55)五种促进剂对氯丁橡胶/顺丁橡胶(CR/BR)共混胶性能的影响。结果表明：TMTD、TMTM可显著提升共混胶的硫化效率，其体系下的硫化胶具有最高的硫化程度、拉伸强度(达18.8 MPa)、耐磨性及最佳的耐低温性能(低温脆性温度为-44 ℃)，但热氧老化后拉伸强度保持率较差；CZ体系的共混胶拉断伸长率最高，DM体系的共混胶热氧老化后拉伸强度的保持率最佳；叔胺类ACT-55焦烧时间最短，常温拉伸性能最差。更多还原

【Abstract】 This study,based on the ZnO/MgO–S composite vulcanization system,systematically investigated the effects of five accelerators,including sulfenamides (CZ),thiazoles (DM),thiurams (TMTD,TMTM),and tertiary amines (ACT-55),on the properties of chloroprene rubber/cis-polybutadiene rubber (CR/BR) blends.The results showed that TMTD and TMTM significantly improved the vulcanization efficiency of the blends,and the vulcanizates obtained from these systems exhibited the highest degree of vulcanization,tensile strength (reaching 18.8 MPa),abrasion resistance,and optimal low-temperature resistance (with a low-temperature brittle temperature of-44 ℃),but the retention of tensile strength after thermo-oxidative aging was poor.The blends from the CZ system exhibited the highest elongation at break,while the blends from the DM system showed the best retention of tensile strength after thermo-oxidative aging.The tertiary amine ACT-55 had the shortest scorch time and the worst tensile properties at room temperature.更多还原