Rheological Properties of Neat and Calcium Carbonate Particles Filled Polypropylene Blends under Axial Vibration Force Field

Y. Liu; T. Jiang; G. Zeng; Y. Huang; X. Li

doi:10.3139/217.2392

Article

Rheological Properties of Neat and Calcium Carbonate Particles Filled Polypropylene Blends under Axial Vibration Force Field

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Published/Copyright: April 6, 2013

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From the journal International Polymer Processing Volume 26 Issue 1

Abstract

Structures, working mechanism, data collecting and processing methods of the self-made multifunctional all-electronic rheometer for polymer composites were introduced in detail. The validity of this equipment was proved by deriving the apparent shear viscosity expression under axial vibration condition and comparing the results obtained from both this self-made rheometer and Rosand Rh7D capillary rheometer at steady state. With this equipment, the effects of calcium carbonate weight fraction, particle size and vibration parameters on apparent shear viscosity of calcium carbonate filled propylene composites were investigated. The results show that: the apparent shear viscosity of the composites increases with the filled particle concentration. However, it is seldom affected by particle size within certain a range of shear rate. While the apparent shear viscosity increases with the decrease of particle size at moderate shear rate. Besides, the apparent shear viscosity declines rapidly with the increasing vibration amplitude. However it exhibits a cosinoidal or sinusoidal trend as vibration frequency increases and peaks at the resonant frequency of the composites.

^∗ Mail address: Liu Yuejun, Packaging and Materials Engineering Department, Hunan University of Technology, No. 88 Tianyan District Zhuzhou Hunan Province, 412007, PRC. E-mail: yjliu_2005@126.com

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Received: 2010-07-06

Accepted: 2010-10-31

Published Online: 2013-04-06

Published in Print: 2011-03-01

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https://doi.org/10.3139/217.2392