氟碳弹性体对HDPE挤出性能的影响  

Improvement of HDPE Extrusion Properties by Fluorocarbon Elastomers Additives

作　　者：尹文艳[1] 冯绍华[1,2] 王超[1] 张丽[1] 翟均学[1] 

机构地区：[1]青岛科技大学橡塑材料与工程教育部重点实验室,青岛266042 [2]北京科技大学材料科学与工程学院,北京100001

出　　处：《塑料助剂》2006年第1期36-40,共5页Plastics Additives

摘　　要：利用不同长径比的毛细管流变仪,研究了加入不同份数的氟碳弹性体对HDPE挤出性能的影响,得到了剪切速率与剪切应力的关系曲线和180℃时表观粘度与剪切速率的关系曲线。结果表明,分别在HDPE5000S中加入0.125份氟碳弹性体和HDPE6098中添加0.1份氟碳弹性体后,挤出物表面的光洁度得到改善,物料的粘度和粘流活化能均降低,显著提高了挤出的效率。By employing the capillary rheometer with different ratio of length to diameter of capillary （L/ D）, extrusion properties of HDPE were improved by the adding fluorocabon. The relationship of shearing rate with shearing stress and the relationship of apparent viscosity with shearing rate at 180℃ were obtained. Results indicated the surface glossiness of extrudate was improved; in the meanwhile, the viscocity and the active energy of viscous fluid was lowered, the efficiency of extrusion was significantly increased.

关 键 词：氟碳弹性体 高密度聚乙烯 挤出 表面光洁度 粘度 

分 类 号：TQ325.12[化学工程—合成树脂塑料工业]