FEP/PP共混物流动性能的研究  

Research on Melt Flow Properties of FEP/PP Blends

作　　者：梁基照[1] 彭万[1] 

机构地区：[1]华南理工大学工业装备与控制工程学院,广东广州510640

出　　处：《现代塑料加工应用》2008年第1期30-33,共4页Modern Plastics Processing and Applications

摘　　要：应用熔体流动速率仪考察了口模直径、聚丙烯(PP)含量、剪切速率及温度对聚全氟乙丙烯(FEP)/PP共混物熔体的流动性能的影响。结果表明,在试验条件下,熔体的剪切流动服从幂律定律;熔体的表观粘度对温度的依赖性符合Arrhe- nius方程;当PP的质量分数(ω)小于10%时,熔体的表观粘度随着ω的增加急剧下降,ω大于10%时,趋于平缓;熔体的表观粘度随着口模直径的增加而非线性的增加。The influences of die diameter, shear rate, PP content and temperature on the melt flow properties of FEP/PP blends are investigated by using a melt flow indexer. The results show that the melt shear flow of the FEP/PP blends obeys the power law under the experimental condition; and the dependence of the melt viscosity on temperature corresponds with the Arrhenius equation; when PP weight fraction（ω） is less than 10 %, the melt viscosity of the blends decreases sharply with an increase of ω; but when ω is more than 10%, the decrease trend of the blends viscosity becomes slight. The melt viscosity of the blends increases nonlinearly with an increase of die diameter.

关 键 词：聚全氟乙丙烯 聚丙烯 流动性能 共混物 

分 类 号：TQ325.14[化学工程—合成树脂塑料工业] O631[理学—高分子化学]