复合应力场下制备自增强的HDPE管材  

Self-reinforced Polyethylene Copolymer Pipe Prepared by Complex Stress Fields

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工程国家重点实验室,四川成都610065

出　　处：《塑料》2005年第3期68-71,14,共5页Plastics

基　　金：国家自然科学基金(20174026)

摘　　要：利用自行研制的先剪切后拉伸的挤管口模,对3种不同配比的HDPE6100M/HMWHDPE共混物挤出管材的周向、轴向强度进行研究,实验中发现少量的HMWHDPE有利于HDPE管材在复合引力场挤出中实现力学性能的双向自增强,预示了少量的HMWHDPE有利于诱导HDPE6100M分子沿应力场方向取向、结晶。The polymer melt was sheared first and then drawn by a self-made extrusion die.Three HDPE6100M/HMWHDPE copolymers were extruded through the die,and circumferential and axial strengths of pipes were studied respectively.It was shown that the few HWMHDPE added HDPE was favorable to obtain self-reinforced pipes prepared under this complex stress field,which indicated the addition of few HMWHDPE to HDPE contributed HDPE6100M molecular orientation and (crystallization) along the stress direction.

关 键 词：复合应力场 双向自增强 管材 

分 类 号：TQ325.12[化学工程—合成树脂塑料工业] TQ320.724