作　　者： ; ;

机构地区： 华南理工大学机械与汽车工程学院工业装备与控制工程系

出　　处： 《高分子材料科学与工程》 1999年第4期162-163,共2页

摘　　要： ＤＳＣ分析表明，熔体连续挤出自增强ＨＤＰＥ片材表层的自增强程度要比芯部的高。借助楔形收敛流道内熔体流场（延伸应变速率）与温度场的分布规律，可知，熔体温度是导致自增强试样横截面上自增强程度不均匀的主要原因。 It has been shown by DSC analyses that the outer layer of the self reinforced HDPE sheet prepared by continuous melt extrusion has a higher self reinforcement degree than its inner core. With the aid of the distribution regularity of flow field(extensional strain rate) and temperature field of a polymer melt flowing through a wedge shaped convergent channel, it has indicate that the melt temperature is the main reason leading to the properties inhomogeneity across the cross section of the self reinforced sample.

关 键 词： 高密度聚乙烯 熔体挤出 自增强 差动热分析

领　　域： [化学工程] [理学] [理学]