熔纺高密度聚乙烯/埃洛石复合纤维的结晶和取向行为研究  

Investigation on the Crystallization and Orientation Behaviors of Melt-Spun HDPE/HNTs Composite Fibers

作　　者：陆波[1] 常宝宝[1] 冯跃战[1] 郑国强[1] 刘春太[1] 

机构地区：[1]郑州大学材料科学与工程学院 材料成型及模具教育部重点实验室,河南郑州450001

出　　处：《上海塑料》2013年第1期23-29,共7页Shanghai Plastics

摘　　要：采用熔融纺丝法制备高密度聚乙烯/埃洛石(HDPE/HNTs)复合纤维。研究纺丝过程中拉伸速率和HNTs对熔纺HDPE/HNTs复合纤维的结晶和取向行为的影响。结果表明:随着拉伸速率的升高,HDPE/HNTs复合纤维的结晶度和长周期减小,而随着HNTs的质量分数增加有所增大,分子链取向度逐渐增大,同时HNTs能够促进分子链的取向,片晶取向度逐渐增大,片晶扭曲程度逐渐降低,同时HNTs的加入能够限制片晶的扭曲。HDPE/HNTs composite fibers were fabricated by melt spinning method. The effects of take- up velocity and HNTs on crystallization and orientation of HDPE/HNTs composite fibers were studied. The results show that the crystallinity and long period decrease with the increasing of take-up velocity, but increase with the mass fraction of HNTs. Molecular orientation increases gradually with the increasing of take-up velocity and the mass fraction of HNTs. Orientation of lamellar is improved by the increasing of take-up velocity, and the twisting of lamellar reduces accordingly. Lamellar twisting is further declined with the incorporation of HNTs.

关 键 词：熔融纺丝 高密度聚乙烯 埃洛石 复合纤维 结晶 取向 片晶扭曲 

分 类 号：TQ342.94[化学工程—化纤工业]