转速对PP-g-MA改性石墨烯/TPU/PP复合材料力学和电学性能的影响  

The effect of Rotation Speed on the Mechanical and Electrical Properties of PP-g-MA Modified Graphene /TPU /PP Composite

作　　者：蓝艳[1] 徐建伟[1] 李勇[1] 代坤[1] 郑国强[1] 刘春太[1] 申长雨[1] 

机构地区：[1]郑州大学材料科学与工程学院橡塑模具国家工程研究中心,河南郑州450001

出　　处：《塑料工业》2014年第7期61-64,76,共5页China Plastics Industry

基　　金：NSFC-河南人才培养联合基金(U1204507);中国博士后科学基金(20110491003;2012T50638)

摘　　要：以热塑性聚氨酯(TPU)和聚丙烯(PP)为基体,石墨烯为导电填料,聚丙烯接枝马来酸酐(PP-g-MA)为界面增容剂,制备了石墨烯/TPU/PP/PP-g-MA导电复合材料。研究了螺杆转速对复合材料力学性能和电学性能的影响以及石墨烯在复合材料中的选择性分布状态。结果表明,随着螺杆转速从10 r/min提高到50 r/min,复合材料的拉伸强度提高了103.62%,断裂伸长率提高了161.47%,电导率提高了155.49%,体系中石墨烯选择性分布在TPU中,石墨烯/TPU在基体中则形成了共连续的导电网络。With thermoplastic polyurethane （TPU） and polypropylene （PP） as polymer matrix,graphene as conductive filler and polypropylene grafted with maleic anhydride （PP-g-MA） as interfacial compatibilizer,the graphene/TPU/PP/PP-g-MA conductive composite were prepared.The effect of screw rotation speed on the mechanical properties and electrical properties of the composites as well as the selective location of graphene in the composite was studied.The results indicated that with increasing the rotation speed from 10 r/min to 50 r/min,the tensile strength increased by 103.62%,the elongation at break increased by 161.47% and the volume conductivity increased by 155.49% of the blend composite.Additionally,it was found the graphene was selectively located in TPU in this composite,and the graphene/TPU formed cocontinued conductive network in the PP matrix.

关 键 词：石墨烯 聚氨酯 力学性能 电学性能 

分 类 号：TQ325.14[化学工程—合成树脂塑料工业] TB332[一般工业技术—材料科学与工程]