蒙脱土/碳纳米管组成对聚乙烯复合材料性能的影响  

Effect of Composition of MMT/MWCNTs on Mechanical Properties of Polyethylene Nanocomposite

作　　者：代士维[1] 张乐天[1,2] 李俊[1] 乔新峰[2] 马跃[1] 

机构地区：[1]上海应用技术学院,上海201418 [2]上海化工研究院有机化工研究所上海市聚烯烃催化技术重点实验室,上海200062

出　　处：《材料工程》2015年第10期7-13,共7页Journal of Materials Engineering

基　　金：上海市创新计划纳米专项资助(11nm0502000)

摘　　要：将改性的纳米蒙脱土(MMT)和官能化的多壁碳纳米管(MWCNTs)进行复合,然后负载TiCl4催化组分,制备出纳米载体Ziegler-Natta催化剂,最后进行乙烯原位聚合得到含有多维纳米材料的聚乙烯基复合材料。通过调控纳米载体中两种材料的组成,研究蒙脱土/碳纳米管组成对纳米复合材料性能的影响。结果表明:纳米蒙脱土、改性碳纳米管复合作为催化剂的载体,能够得到高活性的乙烯聚合催化剂。两种纳米材料组成的改变,会影响聚乙烯复合材料的力学性能。当多壁碳纳米管与蒙脱土比例为1∶1时,所得到的复合材料的拉伸强度为38.7MPa。Several heterogeneous Ziegler-Natta catalysts were prepared by loading TiCl4 using mixture of modified montmorillonite（MMT）and functionalized muti-walled carbon nanotubes（MWCNTs）as effective composite nanofillers.The polyethylene nanocomposites were produced by in-situ polymerization with these catalysts.The effect of composition of MMT and MWCNTs on the mechanical properties of polyethylene nanocomposite was investigated.The results show that highly active polymerization catalyst with the nanofillers containing MMT and modified MWCNTs can be obtained.The composition of nanofiller has a remarkable influence on mechanical properties of polyethylene nanocomposite.The maximum tensile strength of polyethylene nanocomposite is 38.7MPa using the mass ratio of MMT to MWCNTs of 1∶1.

关 键 词：蒙脱土 多壁碳纳米管 原位聚合 拉伸性能 聚乙烯 复合材料 

分 类 号：TQ325.14[化学工程—合成树脂塑料工业]