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Issue:
Rheological Behavior of Low Isotacticity Polypropylene
Author(s):
LI Jian
,
CHENG Baojia
,
ZHOU Chixing
,
LIU Qing
,
LI Yang
Pages:
34
-
36
Year:
2001
Issue:
4
Journal:
CHINA PLASTICS INDUSTRY
Keyword:
低等规度聚丙烯
;
流变性能
;
Carreau模型
;
阿仑尼乌斯方程
;
Abstract:
本文研究了低等规度聚丙烯(LIPP)的流变性能.利用动态流变仪和毛细管流变仪研究了LIPP的粘度与剪切速率的关系,用Carreau模型进行了拟合,得出了相关的参数值.LIPP的粘度与温度的关系可用阿仑尼乌斯方程描述,前置因子A等于0.39Pa*s,流动活化能ΔEη等于55kJ/mol.通过旋转流变仪进行频率扫描和温度扫描,分别得到了LIPP的剪切弹性模量、损耗模量随频率与温度变化的关系.
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