Comparison of off -line, on-line and in-line measuring techniques used for determining the rheological characteristics of polyethylene composites with calcium carbonate

Arkadiusz Klozinski; Mateusz Barczewski

doi:10.14314/polimery.2019.2.1

Published : 2021-01-12

Vol. 64 No. 2 (2019)

Comparison of off -line, on-line and in-line measuring techniques used for determining the rheological characteristics of polyethylene composites with calcium carbonate

Arkadiusz Klozinski Mateusz Barczewski

DOI: https://doi.org/10.14314/polimery.2019.2.1

Abstract

The article has presented comparative tests of the rheological characteristics of lowdensity polyethylene (LDPE) with an addition of calcium carbonate (CaCO3), containing 7, 14, 21 and 28 wt % of filler, respectively. The measurements were carried out by an off -line measuring technique (using a modified dead-weight plastometer), an on-line measuring technique (with a gear pump capillary rheometer) and an in-line measuring technique (with an extruder rheometer). The rheological parameters of the polymeric materials were determined based on the Ostwald de Waele powerlaw model at a temperature of 170 °C. The effect of calcium carbonate addition on the characteristic of operation of each of the employed instruments, the flow curves, the viscosity curves, and the values of power-law index (n) and consistency factor (K) have been determined.

Keywords

polyethylene ; calcium carbonate ; off -line rheology ; on-line rheology ; in-line rheology ; gear pump ; powerlaw index ; consistency factor ; viscosity ; viscosity curve polietylen ; węglan wapnia ; reologia off-line ; reologia on-line ; reologia in-line ; pompa zębata ; wykładnik płynięcia ; współczynnik lepkości ; krzywa lepkości

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Klozinski, A., & Barczewski, M. (2021). Comparison of off -line, on-line and in-line measuring techniques used for determining the rheological characteristics of polyethylene composites with calcium carbonate. Polimery, 64(2), 83–92. https://doi.org/10.14314/polimery.2019.2.1

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Arkadiusz Klozinski Arkadiusz.Klozinski@put.poznan.pl

Affiliation
Poznan University of Technology, Faculty of Chemical Technology, Institute of Chemical Technology and Engineering, Berdychowo 4, 60965 Poznan, Poland

Mateusz Barczewski

Affiliation
Poznan University of Technology, Faculty of Mechanical Engineering and Management, Institute of Materials Technology, Piotrowo 3, 61138 Poznan, Poland