防老剂MB用量对CM/EVM共混胶性能的影响  

Effect of Amount of Antiager MB on the Performance of the CM/EVM Rubber Blends

作　　者：刘春林[1] 邓涛[1] 辛振祥[1] 

机构地区：[1]青岛科技大学高分子科学与工程学院,山东青岛266042

出　　处：《合成材料老化与应用》2013年第1期17-20,共4页Synthetic Materials Aging and Application

摘　　要：研究了共混比为70/30的氯化聚乙烯(CM)/乙烯-醋酸乙烯酯橡胶(EVM)共混胶中不同MB的用量下,共混胶的硫化特性,热空气老化前后共混胶的力学性能、两相交联密度和动态力学性能。研究表明:随着MB用量的增加,共混胶的硫化特性稍有变化;老化前后,1#共混胶的力学性能及交联密度变化率较高,玻璃化转变温度的变化程度较大;老化前后,5#共混胶的力学性能变化率较低,交联密度变化率较低,玻璃化转变温度的变化程度较小。Effect of the amount of antiager MB on the performance of the CM/EVM rubber blends was studied, including the vulcanization characteristics of the rubber blends, the mechanical properties of the rubber blends be- fore and after the hot air aging, two-phase linking density and dynamic mechanical properties. The study showed that ： with the increase in the amount of MB, the vulcanization characteristics of the rubber blend changed slightly. Before and after aging, when the amount of MB was 0 , the mechanical properties and the cross-linking density of the rubber blends changed obviously, the glass transition temperature of the blends changed the most. Before and af- ter aging, when the amount of MB was 2, the mechanical properties＇ changement of the rubber blends was lower than others, the blends also had a lower change rate of cross-linking density and the glass transition temperature than others.

关 键 词：氯化聚乙烯(CM) 乙烯-醋酸乙烯酯橡胶(EVM) 硫化特性 力学性能 两相交联密度 动态力学性能 

分 类 号：TQ63[化学工程—精细化工]