Characterization of the rheological behavior of thermotropic liquid crystal polymers related to extrusion processes

Publikation: Beitrag in Buch/Bericht/TagungsbandKonferenzbeitragBegutachtung

Abstract

In this paper, a new rheological model describing the viscosity of thermotropic liquid crystal polymers is developed. The rheological behavior of thermotropic LCP was studied using a high-pressure capillary rheometer, which was equipped with a slit die. The detailed analysis of all experimental investigations showed that the flow behavior cannot be described well with existing models. The new model combines the Bird-Carreau-Yasuda model with a specific yield stress parameter. The temperature dependence of this yield stress is considered like that of the zero-shear-rate viscosity of the Bird-Carreau-Yasuda approach. The new model does not only describe the determined data better than existing models, but it can also describe the three-region flow behavior observed by other authors excellently.

OriginalspracheEnglisch
TitelProceedings of the 36th International Conference of the Polymer Processing Society, PPS 2021
Redakteure/-innenAbdellah Ajji, Frej Mighri, Hani E. Naguib
Herausgeber (Verlag)American Institute of Physics Inc.
Seiten020004-1 - 020004-6
ISBN (elektronisch)9780735445062
DOIs
PublikationsstatusVeröffentlicht - 23 Mai 2023
Veranstaltung36th International Conference of the Polymer Processing Society, PPS 2021 - Montreal, Kanada
Dauer: 26 Sep. 202129 Sep. 2021

Publikationsreihe

NameAIP Conference Proceedings
Band2607
ISSN (Print)0094-243X
ISSN (elektronisch)1551-7616

Konferenz

Konferenz36th International Conference of the Polymer Processing Society, PPS 2021
Land/GebietKanada
OrtMontreal
Zeitraum26.09.202129.09.2021

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