不同补强剂对氢化丁腈橡胶硫化胶性能的影响

Influences of different reinforcing agents on properties of hydrogenated nitrile rubber vulcanizate

以炭黑(N330)、蒙脱土(MMT)、有机蒙脱土(OMMT)、甲基丙烯酸镁(MgMA)、甲基丙烯酸锌(ZnMA)和齐聚酯等分别作为补强剂,制备相应的HNBR(氢化丁腈橡胶)硫化胶,并对硫化胶的力学性能、耐热老化性能和耐热性等进行了探讨。研究结果表明:ZnMA、MgMA或齐聚酯的综合补强效果相对较好;N330改性HNBR硫化胶的力学性能虽相对较好,但其耐热老化性能相对较差;MMT几乎无补强作用;OMMT能均匀分散在HNBR基体中,其与橡胶分子之间的相容性良好,故相应改性HNBR硫化胶的耐热性和耐热老化性能相对较好。

With carbon black （ N330 ）, montmorillonite （MMT）, organic montmorillonite （OMMT）, magnesium methacrylate（ MgM A） ,zinc methacrylate（ZnMA） and oligomer ester respectively as reinforcing agents, the corresponding HN BR （hydrogenated n i trile rubber） vulcanizates were prepared, and their mechanical properties, thermal aging resistance and heal resistance were discussed. The research results showed that the reinforcing effects of ZnMA, MgMA or oligomer ester were relatively better. The HNBR vulcanizate modified by N330 had the relatively better mechanical properties,but its thermal aging resistance was relatively poorer. The MMT hadn＇t almost reinforcing action. The corresponding modified HNBR vulcanizate had the relatively better heat resistance and thermal aging resistance because the OMMT could be evenly dispersed in HNBR matrix,and the compatibility between OMMT and rubber mnlectlles was good.