在复合外场中形成HDPE双向拉伸自增强片材  

Study on Preparation of Biaxial Stretching Self-reinforced HDPE Sheets at Complex Stress Field

作　　者：郭建明[1] 吴世见[1] 欧阳初[1] 申开智[1] 

机构地区：[1]四川大学高分子科学与工程学院

出　　处：《塑料工业》2003年第5期28-30,共3页China Plastics Industry

基　　金：国家自然科学基金 ( 2 0 1740 2 6);高等学校博士学科点专项基金资助项目 ( 2 0 0 0 0 610 2 1)

摘　　要：采用具有复合外场的双向拉伸口模 ,实现了聚乙烯片材双向拉伸自增强 ,并对其片材的拉伸强度、结晶形态进行了研究。结果表明 :HDPE双向拉伸自增强片材纵向和横向拉伸强度均有明显的增加 ,其内部结晶形态为平行串晶结构 ,正是由于生成了大量的平行串晶结构 ,导致了双向拉伸自增强片材的强度的提高。揭示了材料的结构与性能之间的关系。Biaxial Stretching self-reinforced HDPE sheets were prepared by using the die with complex stress field. The results showed that the longitudinal and transverse direction tensile strength of the prepared sheets had all been improved obviously and the morphology of the self-reinforced sheets were shish-kebab structure. Owing to the formation of this shish-kebab structure, the strength of the sheets were improved. The relationships between the microstructures and properties of the sheets were revealed.

关 键 词：复合外场 HDPE 聚乙烯 双向拉伸 自增强片材 平行串晶结构 

分 类 号：TQ325[化学工程—合成树脂塑料工业]