助交联剂在氢化丁腈橡胶中的应用研究

研究添加不同用量助交联剂齐聚酯和三甲基丙烯酸三羟甲基丙烷酯（TMPTMA）的氢化丁腈橡胶（HNBR）的硫化特性和物理性能，并对比了两种助交联剂对HNBR的硫化特性、物理性能、老化性能、高温拉伸性能、耐磨性能和加工性能的影响。结果表明：随着齐聚酯或TMPTMA用量的增大，HNBR胶料的转矩增大，硫化时间缩短；拉伸强度基本不变，硬度、100%定伸应力和撕裂强度逐渐提高，拉断伸长率和回弹值减小。与添加齐聚酯的胶料相比，添加TMPTMA的胶料转矩较大，硫化时间较短；对比添加齐聚酯和TMPTMA的胶料，物理性能、老化性能、高温拉伸性能和耐磨性能都非常接近，即二者的作用原理相似。添加TMPTMA的胶料储能模量较小，损耗因子较大。;The vulcanization characteristics and mechanical properties of HNBR with curing co-agent oligomer ester or TMPTMA were studied，and the influence of these two curing co-agents on the vulcanization characteristics，mechanical properties，high temperature tensile properties，aging behavior，wear resistance and processing properties of HNBR was compared.The results showed that，with the increase of oligomer ester or TMPTMA content，the torque of rubber compound increased，the curing time was shortened，tensile strength remained basically unchanged，hardness，modulus at 100% elongation and tear strength gradually increased，and elongation at break and resilience decreased.Compared with oligomer ester，the torque of rubber compound with TMPTMA was higher，vulcanization time was shorter，and the physical properties，aging behavior，high temperature tensile properties and wear resistance were close，indicating that their action mechanisms in the vulcanization process were similar. In addition，the storage modulus of rubber compound with TMPTMA was smaller，and its loss factor was larger