聚丙烯/有机改性蒙脱土纳米复合材料的制备及力学性能研究  

Preparation of polypropylene/OMMT nanocomposites and investigation of their mechanical properties

作　　者：陈奎[1] 杨瑞成[1] 张天云[2] 成生伟[1] 马建忠[1] 

机构地区：[1]兰州理工大学材料科学与工程学院 [2]兰州师范高等专科学校,甘肃兰州730070

出　　处：《兰州理工大学学报》2006年第6期24-27,共4页Journal of Lanzhou University of Technology

基　　金：甘肃省自然科学基金(ZSO21-A25-028-C)

摘　　要：针对两种有机蒙脱土(TJ-2型和KH-V6型),采用熔体插层法在双螺杆挤出机中制备出PP/OMMT纳米复合材料,并运用XRD和FTIR对所制得的复合材料进行表征.研究结果表明,两种OMMT片层都在PP基体中达到纳米级的分散.力学性能研究表明,相对PP而言,两种PP/OMMT纳米复合材料的硬度分别提高了11%和19%,抗冲击性能分别提高了18%和20%,且随着蒙脱土添加量的增加,冲击性能的变化符合逾渗脆韧转变机制.Aimed at two kinds of organically-modified montmorillonite, namely TJ-2 type （OMMT1） and KH-V6 type （OMMT2）, the PP/OMMT nanocomposites were synthesized by means of melt intercalation in twin-screw extruder. The prepared composites were characterized with XRD and FTIR. It was shown by the investigation result that the dispersion of both OMMT1 and OMMT2 layers had reached nano-level in PP matrix. Relative to PP, mechanical property investigation showed that the addition of nano-particles could improve the hardness （up to 11% and 19%） and their notch impact strength （up to 18% and 20%） ; where the change of notch impact strength conformed to brittle-ductile mechanism of percolation.

关 键 词：聚丙烯 蒙脱土 纳米复合材料 逾渗 

分 类 号：TB383[一般工业技术—材料科学与工程] TQ325.1[化学工程—合成树脂塑料工业]