等通道转角挤压自增强线性低密度聚乙烯的结构与性能研究  

Structure and Properties of Self-reinforced Linear Low Density Polyethylene Processed by Equal Channel Angular Extrusion

作　　者：崔宏祥[1] 马玉春[1] 张建[1] 赵润娴[1] 毕大森[1] 

机构地区：[1]天津理工大学材料科学与工程系,天津300191

出　　处：《塑料》2004年第6期30-33,共4页Plastics

基　　金：天津市高等学校科技发展基金项目(项目编号20030429)。

摘　　要：主要研究等通道转角挤压线性低密度聚乙烯的挤压条件与性能之间的关系。利用广角X射线衍射(WAXD)、差示扫描量热分析(DSC)、扫描电镜(SEM)等手段对其结构进行表征,结果表明,结晶度与分子取向发生了明显的变化。力学性能测试结果显示拉伸强度提高将近1倍。The aim is to explore the relationship between processing conditions and the properties of linear low density polyethylene (LLDPE) prepared by the new processing method of equal channel angular extrusion (ECAE).Wide-angular X-ray diffraction (WAXD),differential scanning calorimetry (DSC) and scanning electron microscopy (SEM) were applied to examinate the structure changing.Significant changes in crystalline and molecular orientation were taken place.An increase of up to one time or so in tensile strength was achieved with ECAE

关 键 词：线性低密度聚乙烯 自增强 结构与性能 WAXD 拉伸强度 结晶度 研究 等通道转角挤压 力学性能测试 X射线衍射 

分 类 号：TQ325[化学工程—合成树脂塑料工业] TG146.21[一般工业技术—材料科学与工程]