摘要
用毛细管流变仪对以马来酸酐接枝聚丙烯(PP-g-MAH)为相容剂的聚丙烯/高密度聚乙烯(PP/HDPE)共混体系的流变性能进行研究。研究发现,PP/HDPE共混体系属于假塑性流体;随着剪切速率的增加,表观黏度下降;PP-g-MAH的加入降低了共混体系的表观黏度;HDPE与PP的非牛顿指数在低剪切速率区与适宜温度下适用于幂律方程的经验公式;HDPE与PP共混后,HDPE含量越低,体系出现壁面滑移的临界剪切速率越高,可加工性能越好。
The rheological properties of PP/HDPE blends which was combined by PP-g-MAH,were studied by capillary rheometer. The results show that the rheological behavior of PP/HDPE blends is non-Newtonian fluid. With the increase of shear rate, the apparent viscosity drops. The apparent viscosity of the blends reduce with the added of PP-g-MAH. For the non-Newtonian index, the power law is applicable to HDPE and PP, while in low shear rate and the temperature is suitable. The critical shear rate in wall slip of PP/HDPE blends increases while the content of HDPE reduce. The property of process performance is better.
出处
《现代塑料加工应用》
CAS
北大核心
2012年第3期45-48,共4页
Modern Plastics Processing and Applications
基金
常州市中小型企业技术创新资金计划基金(CN20090032)资助
关键词
聚丙烯
高密度聚乙烯
马来酸酐接枝聚丙烯
毛细管流变仪流变性能
非牛顿指数
polypropylene
high density polyethylene
polypropylene grafted maleic anhydride
capillary rheometer
rheological property
non-Newtonian index
