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Title of Journal: Chin J Polym Sci

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Abbravation: Chinese Journal of Polymer Science

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Chinese Chemical Society and Institute of Chemistry, CAS

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DOI

10.1007/s11695-013-1175-9

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1439-6203

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Influence of reverse pressure on the shear viscosi

Authors: Zengge Guo Xin Li Jian Li Bin Zhang Bowen Cheng
Publish Date: 2014/05/22
Volume: 32, Issue: 7, Pages: 923-930
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Abstract

The effect of reverse pressureon rheological behavior has been studied The apparatus is a capillary rheometer with counter pressure chamber being held at a high reverse pressure by means of a cock The results show that with the increase in temperature the shear viscosity of hydrophilic PET is reduced It is different that the effect of temperature on shear viscosity is varied under the condition of all shear rates or all pressures and the effect is more prominent at 50 MPa or at 216 s−1 At the same time the pressure coefficients decrease with increasing the shear rate and the temperature and tend to reach a constant value nearly at the temperature of 290 °C

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