共混体系HDPE/m-LLDPE在动态保压注射成型中增强增韧的研究  

Study of Reinforcing and Toughening of HDPE/m-LLDPE Blends by Oscillating Packing Injection Molding

作　　者：李代叙[1] 周海英[1] 申开智[1] 王静[1] 

机构地区：[1]四川大学高分子科学与工程学院高分子材料工程国家重点实验室,四川成都610065

出　　处：《塑料工业》2005年第5期12-15,共4页China Plastics Industry

基　　金：国家自然科学基金资助项目(50473053)

摘　　要：在动态保压注塑成型技术提供的单方向往复剪切应力场作用下,制备了HDPE/m LLDPE增强增韧试样,探讨了增强增韧效果与工艺条件的关系。发现加入适量m LLDPE后的HDPE经过动态保压注射成型,可以明显提高HDPE/m LLDPE试样的拉伸强度和冲击强度,拉伸强度提高了4倍以上,而冲击强度提高了近2倍,从而达到了增强又增韧的效果。Under the influence of the one side cyclic shear stress field provided by the oscillating packing injection molding,reinforced and toughened HDPE/m-LLDPE samples were prepared.The relation between the results of the reinforcing and toughening with technical condition was discussed.It was found that a reasonable addition of m-LLDPE could obviously increase the tensile strength and the impact strength of the sample by oscillating packing injection molding,the tensile strength increased by more than 400%,and the impact strength increased nearly 200%,resulted in both reinforcing and toughening.

关 键 词：动态保压注射成型 高密度聚乙烯 茂金属线型低密度聚乙烯 增强 增韧 

分 类 号：TQ325.12[化学工程—合成树脂塑料工业]