聚丙烯/有机蒙脱土纳米复合材的制备及性能研究

本文采用熔体插层法在双螺杆挤出机中制备了PP／OMMT纳米复合材料，讨论了有机化改性、相容剂以及辐照、接枝处理等因素对纳米复合材料性能的影响。用各种手段（SEM、TEM、DSC和XRD）对所制得的复合材料的形态结构进行表征。研究结果表明：对MMT进行有机化改性、加入适当的相容剂以及进行辐照、接枝处理的确能使复合材料的力学性能有所提高。形态结构表征证明：PP基体与纳米填料间的相容性增加，两者间的界面相互作用得到了加强；OMMT片层在PP基体中达到纳米级的分散。

The Synthesis, Mechanical Properties and Morphology Studies of Polypropylene/OMMT Nanocomposites

The PP/OMMT nanocomposites were synthesized through melt intercalation in twin screw extruder. The addition of nano particles can significantly improve the notch impact strength of nanocomposites. And the factors that influence the notch impact strength are discussed. The morphology characters of the result products were investigated by SEM, TEM, WAXD and DSC. The TEM image indicates that the dispersion of OMMT layers has reached nano level in PP matrix. And the SEM images indicates that the nano filler can modify the interface properties between PP matrix and fillers.