Evaluation of applicability of an SER Universal Testing Platform

0454838 - ÚH 2016 FR eng C - Konferenční příspěvek (zahraniční konf.)
Filip, Petr - Pivokonský, Radek - Peer, Petra - Zelenková, Jana
Evaluation of applicability of an SER Universal Testing Platform.
10th Annual European Rheology Conference, Book of Abstracts. Nantes: GFR, 2015.
[10th Annual European Rheology Conference. Nantes (FR), 14.04.2015-17.04.2015]
Institucionální podpora: RVO:67985874
Klíčová slova: Meissner- and Münstedt-type classical rheometers * Sentmanat Extension Rheometer * elongational viscosity * comparison
Kód oboru RIV: BK - Mechanika tekutin

Analysis of acceptability of the new devices for the measurement of elongational viscosity is very scarce as well as their mutual comparison, and their comparison with the Meissner- and Münstedt-type classical rheometers. This need is especially evoked by the fact that usually not all attributes characterizing the classical devices are fulfilled by newly developed ones. A Sentmanat Extension Rheometer represents one out of a few experimental devices for the measurement of elongational viscosity of polymer melts. However, the appropriateness of this technique for individual polymer materials is not sufficiently apparent and in some cases is disregarded or ignored. The proposed visualization technique is based on imprinting painted pattern from the inner surface of the studied polymer samples onto the counter-rotating drums. Digitization of the imprinted pattern gives a possibility to evaluate a possible deviation from theoretically supposed behaviour and to analyse the individual causes. With this aim there is carried out a description of 1) both (upper and lower) edges of the elongated material as imprinted in time on both drums and to compare their courses with the theoretically predicted exponential decay; and 2) behaviour of a polymer sample as a whole, when a perpendicular square grid from the inner side of a polymer rectangular sample is imprinted on both drums.
Trvalý link: http://hdl.handle.net/11104/0255475