滑石粉-EPDM复合材料的力学性能研究  

Studies on the Mechanical Properties of Talcum-EPDM Composites

作　　者：崔运国[1,2] 张军[1] 陆春华[1] 倪亚如[1] 许仲梓[1] 

机构地区：[1]南京工业大学材料科学与工程学院,南京210009 [2]南京工业大学理学院,南京210009

出　　处：《材料导报》2009年第20期62-65,69,共5页Materials Reports

基　　金：江苏省高校自然科学基础研究项目(08KJB480001)资助;预研项目(2006)

摘　　要：研究了滑石粉填充EPDM橡胶复合材料的力学性能,主要研究了滑石粉粒径、滑石粉含量、硫化温度以及硫化时间对EPDM橡胶复合材料力学性能的影响。结果表明,相比1250目滑石粉,2500目超细滑石粉对三元乙丙橡胶的补强效果显著。随滑石粉含量的增加,复合材料的断裂强度先增加后减小。超细滑石粉体系的断裂强度以及断裂伸长率随滑石粉含量的增加快速变大,当滑石粉含量为50份时出现拐点。对超细滑石粉-EPDM体系分别于145℃、150℃、155℃、160℃和170℃硫化30min,结果表明,150℃硫化时,复合材料的力学性能最好。依据160℃硫化特征时间T、T和T进行硫化,结果显示硫化时间为T时复合材料的力学性能最佳。This work cover the talcum filled with EPDM, the effect of talcum＇s dimension, contents, curing temperature and curing time to the mechanics of the composites is studied. The results show that the 2500 meshls talcum has better reinforcement than the 1250 mesh＇s talcum to the composites. As the contents of talcum increased, the mechanical properties first increased and then decreased. The tensile strength and the elongation at break increased rapidly as the filler contents of 2500 meshes talcum increased, but when the filler reached to 50 phr. 100 EPDM, the mechanical properties appeare an inflexion. The fine talcum-EPDM composites is vulcanized at five different tempera-tures（145℃, 150℃, 155℃, 160℃ and 170℃） for 30 minutes. The composites has the largest tensile strength cured at 150℃. With the increasing of temperature the mechanical properties become poor. Curing the blends for different time according to the vulcanization characteristics of T10, T30 and T60 at 160℃. The result shows that the sample vulcanization for time of T10 has better tensile strength.

关 键 词：滑石粉 三元乙丙橡胶 力学性能 

分 类 号：TQ330.7[化学工程—橡胶工业]