复合应力场下挤出HDPE管材自增强的研究  

Study on Self-reinforcement of High Density Polyethylene(HDPE)Pipe Extruded under Compound Stress Field

作　　者：李安定[1] 袁毅[1] 申开智[1] 陈长森[1] 柯文体[1] 

机构地区：[1]四川大学高分子材料国家重点实验室

出　　处：《塑料科技》2005年第3期1-3,共3页Plastics Science and Technology

基　　金：国家自然科学基金资助项目(20174026)

摘　　要：　用自行研制的能产生剪切和拉伸复合应力场的特殊挤出成型装置挤出HDPE管材,对管材周向、轴向力学性能进行了初步的研究。在通用级聚乙烯(DGDA6098)中添加高分子量HDPE后,发现该HDPE能够诱导DGDA6098沿应力场方向产生大分子取向和结晶,从而实现了复合应力场下管材力学性能的双向自增强。It studied primarily the circumferential and axial mechanical properties of high density polyethylene (HDPE) pipe which was extruded by a self-made and special extrusion molding equipment that can produce a compound stress field of shearing and tensile stress on molten polymer. When adding high molecular weight HDPE into general HDPE (DGDA6098), it showed that high molecular HDPE contributes to inducing the macromolecular orientation and crystallization of polymer DGDA6098 along the stress-field. Thus, it achieved the self-reinforcement of HDPE pipe in circumferential and axial direction under the compond stress field.

关 键 词：HDPE 自增强 周向取向 双向增强 聚乙烯 

分 类 号：TQ320.724[化学工程—合成树脂塑料工业]