m-HDPE/Kaolin复合材料流变性质研究  

Rheological behavior of m-HDPE/kaolin composites

作　　者：王新[1] 王许云[1] 吴其晔[1] 漆宗能[1] 胡有良[1] 

机构地区：[1]中国科学院化学研究所工程塑料国家重点实验室分子科学中心,北京100080

出　　处：《材料科学与工艺》2003年第4期399-402,共4页Materials Science and Technology

基　　金：国家自然科学基金资助项目(59975023).

摘　　要：对比研究了采用聚合填充法(Polymerization-filling)和熔融共混法(meltcompounding)制备的m-HDPE/Kaolin复合材料的流变性质.动态流变实验和毛细管挤出实验的结果表明,聚合填充的HDPE/Kaolin复合体系的熔体动态粘度、复数粘度、表观粘度均低于熔融共混复合体系和纯HDPE的相应值.聚合填充的Kaolin粒子与PE分子链的强相互作用及其良好的分散状态,是改善材料流变行为的原因所在.Metallocene catalyzed m-HDPE/Kaolin composites were prepared by polymerization-filling and melt compounding. The rheological behaviors of the composites were investigated with capillary and parallel plate rheometer. Experimental results showed that Kaolin particles introduced by polymerization filling could decrease the complex viscosity, dynamic viscosity and apparent viscosity of the melt and improve the processability of the material. Further discussion showed that the improvement was attributed to the unique microstructure governed by polymerization-filling mechanism, the excellent dispersion of Kaolin particles in the matrix of PE and the strong effect between Kaolin particles and the molecular chain of polyethylene.

关 键 词：聚合填充法 熔融共混法 流变性质 粘度 m-HDPE/Kaolin复合材料 

分 类 号：TB333[一般工业技术—材料科学与工程]