摘要
采用毛细管流变仪对聚丙烯/纳米羟基磷灰石(PP/n HA)复合材料的流变性能进行了研究,并讨论了复合材料的表观黏度、非牛顿指数、黏流活化能与温度、剪切速率、n HA用量之间的关系。结果表明:PP/n HA熔体为假塑性流体,其表观黏度随着n HA用量的增加总体呈上升趋势,但在其用量为1%时达到极小值;非牛顿指数随着温度的提高而增大,随着n HA用量的增加而逐渐减小;黏流活化能则随着剪切速率的增加逐渐降低,随着n HA用量的增加呈上升趋势。
The rheological properties of polypropylene/nano-hydroxyapatite （PP/nHA） composites were studied by capillary rheometer. The relations between apparent viscosity, non-Newtonian index, viscous flow activation energy of composites and temperature, shear rate, content of nHA were discussed. The results show that： firstly, the fluid of the PP/nHA composite is a pseudo plastic fluid, and the apparent viscosity has an upward tendency with the increase of nHA addition, and the minimum appears when nHA content is 1%; secondly, the Non-Newtonian index increases with the increase of temperature and decreases with the increase of nHA. The viscous flow activation energy decreases with the increase of shear rate, and it shows a rise tendency as a whole with the increase of the content of nHA.
出处
《塑料科技》
CAS
北大核心
2015年第5期31-34,共4页
Plastics Science and Technology
基金
河南工程学院功能纺织高分子材料科技创新团队(CXTD2013004)
河南工程学院博士基金项目(D2012029)
河南省教育厅科技攻关项目(14B150004)
郑州市重点科技攻关项目(郑州市科技局121PPTGG357-1)
关键词
聚丙烯
纳米羟基磷灰石
流变性能
非牛顿指数
黏流活化能
PP
Nano-hydroxyapatite
Rheological property
Non-Newtonian index
Viscous flow activation energy
