振动挤出对HDPE管材耐慢速裂纹增长性能的影响  

Effect of Vibration Extrusion on Slow Crack Growth Resistance of HDPE Pipe

作　　者：陈开源 周南桥 刘斌[1] 步玉磊 唐海龙 翟丽 

机构地区：[1]华南理工大学聚合物新型成型装备国家工程研究中心聚合物成型加工工程教育部重点实验室,广东广州510640

出　　处：《塑料科技》2009年第10期58-61,共4页Plastics Science and Technology

基　　金：国家自然科学基金项目(10872071)

摘　　要：使用自制的电磁动态塑化挤出机挤出高密度聚乙烯(HDPE)管材。对稳态挤出和振动挤出的HDPE管材耐慢速裂纹增长性能进行了测试。采用DSC、WAXD分析研究了振动力场对HDPE管材耐慢速裂纹增长性能的影响。结果表明:振动挤出的HDPE管材结晶度提高,熔点升高,晶片变厚,晶粒尺寸变大,结晶完善,耐慢速裂纹增长性能提高。HDPE pipe was extruded by a custom-made electromagnetic dynamic plasticating extruder. The slow crack growth resistance of HDPE pipe prepared by static extrusion and vibration extrusion was investigated. The influence of vibration force field on the slow crack growth of HDPE pipe was studied by DSC and WAXD analysis. The results show that HDPE pipe prepared by vibration extrusion has higher crystallinity, higher melting temperature, larger lamellar thickness, larger crystal size, and more perfect crystals, and the slow crack growth resistance of HDPE pipe is improved.

关 键 词：高密度聚乙烯 管材 慢速裂纹增长 振动挤出 

分 类 号：TQ325.12[化学工程—合成树脂塑料工业]