聚丙烯/乙烯-辛烯共混物的动态交联及性能  

Performance of dynamic crosslinked polypropylene/ethylene-octene copolymer blends

作　　者：江学良[1] 孙刚[1] 官健[1] 李凡[1] 徐雄[1] 杨浩[1] 王维[1] 

机构地区：[1]武汉工程大学材料科学与工程学院,湖北武汉430074

出　　处：《武汉工程大学学报》2013年第9期54-58,共5页Journal of Wuhan Institute of Technology

基　　金：湖北省自然科学基金项目(2011CBD220);武汉工程大学研究生教育创新基金项目;湖北省科技厅

摘　　要：利用动态交联技术制备了动态交联聚丙烯/乙烯-辛烯共混物(PP/POE).采用哈克转矩流变仪研究了动态交联对PP/POE共混物扭矩的影响;研究了交联剂的种类和POE用量对共混物力学性能的影响;考察了动态交联共混物的流变性能.结果表明,加入过氧化二异丙苯(DCP)后,PP/POE共混物的扭矩先升后降至平衡状态;随着POE用量的增加,PP/POE共混物的冲击强度明显提高,但拉伸强度有所降低,PP/POE共混物合适配比为100∶40,DCP的添加量为POE含量的2%为优;PP/POE共混物熔体流变行为属于假塑性流体,且高温下(220℃)降解反应程度高于交联反应程度.Dynamic crosslinked polypropylene/ethylene-octene copolymer（PP/POE）blends were prepared by using dynamic crosslinked method.The torque of PP/POE blends was studied using a Hakke Rheometer.Effect of the amount of DCP and POE on mechanical properties and rheological properties of dynamic crosslinked PP/POE blends was investigated.The results show that the torque of PP/POE blends increases firstly with increasing DCP and then decreases to the balance;the impact strength of the blends increases obviously,but tensile strength decreases slightly with increasing POE content;the suitable proportion of PP/POE is 100∶40,and the optimal amount of DCP is 2% of POE content;the rheological behavior of dynamic crosslinked PP/POE blends belongs to pseudoplastic fluid,the degree of degradation reaction is higher than that of crosslinking reaction at high temperature of 220℃.

关 键 词：聚丙烯 乙烯-辛烯共混物 动态交联 力学性能 流变行为 

分 类 号：TQ325.14[化学工程—合成树脂塑料工业]