过氧化物体系中天然橡胶／三元乙丙橡胶并用胶的共硫化  

Co-cure of natural rubber/ethylene propylene diene monomer blends by organic peroxide system

作　　者：齐兴国[1] 王进[2] 李荣勋[1] 杨军[2] 刘光烨[1] 

机构地区：[1]青岛科技大学青岛市新材料研究重点实验室,山东青岛266042 [2]株洲时代新材料科技股份有限公司,湖南株洲412007

出　　处：《合成橡胶工业》2008年第2期122-126,共5页China Synthetic Rubber Industry

摘　　要：研究了以过氧化二异丙苯(DCP)/助硫化剂为硫化体系分别硫化天然橡胶(NR)/三元乙丙橡胶(EPDM)以及NR/预硫化EPDM并用胶的性能,考察了EPDM混炼胶的硫化特性,对并用硫化胶进行了差示扫描量热分析。结果表明,NR/EPDM并用胶在使用DCP/助硫化剂硫化体系时具有较好的共硫化性;EPDM经预硫化后可以将配合剂固定其中,并能增加EPDM的硫化活性,提高了与NR并用胶的共硫化性。The properties of natural rubber/ethylene proplylene diene monomer （ NR/EPDM ） and NR/precured EPDM（P-EPDM） blends cured by dicumyl peroxide （ DCP）/co-curing agent were studied, and the curing characteristic of EPDM compounds was investigated, the vulcanizates of the compounds were analyzed by differential scanning calorimetry. The results showed that NR/EPDM blends had better co-curing behavior with DCP/co-curing agent as curing system. The better co-curing behavior of NR/P-EPDM blends was attributed to the P-EP- DM which could not only restrain the migration of rubber ingredients but improve the reactivity of EPDM and co-cure with NR.

关 键 词：过氧化物 天然橡胶 三元乙丙橡胶 橡胶并用 共硫化 

分 类 号：TQ330[化学工程—橡胶工业]