Steady shear viscosity of short fibre suspensions in thermoplastics
Steady shear viscosity of short fibre suspensions in thermoplastics
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热塑性塑料中短纤维悬浮液的稳态剪切粘度
DOI：
10.1007/s003970050116
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发表时间：
1998
期刊：
影响因子：
2.3
通讯作者：
M. Vincent
中科院分区：
文献类型：
--
作者：
Bruno Souloumiac;M. Vincent
用毛细管流变仪研究了聚乙烯、聚酰胺和硅油在不同纤维含量下的流变行为。由纤维引起的粘度增加对于硅油是重要的，而对于聚乙烯是可忽略的。聚酰胺是中间体。相同的分类代表毛细管上游的收敛通道中的压力损失。建立了考虑基体剪切变稀行为的基于胞元模型的本构方程。该模型的预测与测量结果正确一致。
Abstract The rheological behaviour of a polyethylene, two polyamides and a silicone oil filled with different fibre contents are studied in capillary rheometry. The viscosity increase induced by the fibres is important for the silicone oil, and negligible for the polyethylene. The polyamide is intermediate. The same classification stands for the pressure loss in the convergent channel upstream from the capillary. A constitutive equation based on a cell model which takes into account the shear-thinning behaviour of the matrix is built. The predictions of the model are in correct agreement with the measurements.