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Determination of pressure coefficient of polymer melts from shear flow

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dc.title Determination of pressure coefficient of polymer melts from shear flow en Sedláček, Tomáš Zatloukal, Martin Lengálová, Anežka Filip, Petr Sáha, Petr
dc.relation.ispartof Annual Technical Conference - ANTEC, Conference Proceedings 2003
utb.relation.volume 3
dc.citation.spage 3748
dc.citation.epage 3752
dc.event.title 61st Annual Technical Conference ANTEC 2003
dc.event.location Nashville, TN
utb.event.state-en United States
utb.event.state-cs Spojené státy americké
dc.event.sdate 2003-05-04
dc.event.edate 2003-05-08
dc.type conferenceObject
dc.language.iso en
dc.subject Additional chamber en
dc.subject Modified rheometer en
dc.subject Pressure coefficient en
dc.subject Shear viscosity en
dc.description.abstract A modified capillary rheometer was used to measure strain rate-temperature-pressure dependencies of shear viscosity for injection molding grades of polymers. The modification consisted in the addition of a second chamber and a restricting needle valve below the main die, and its purpose was to determine the effect of pressure on the shear viscosity of different polymer melts. The modified White-Metzner model was employed to simultaneously fit the measured viscosity data and determine the pressure and temperature coefficients, ß and α. It has been found that not only the temperature but also the pressure factor significantly influences viscosity, and both of them are useful for the description of a polymer behaviour. en
utb.faculty Faculty of Technology
utb.identifier.rivid RIV/70883521:28110/03:63501898!RIV/2004/AV0/281104/N
utb.identifier.obdid 11553123
utb.identifier.scopus 2-s2.0-0141728500
utb.identifier.coden ACPED
utb.source d-scopus 2015-06-04T12:56:58Z 2015-06-04T12:56:58Z
utb.contributor.internalauthor Sedláček, Tomáš
utb.contributor.internalauthor Zatloukal, Martin
utb.contributor.internalauthor Lengálová, Anežka
utb.contributor.internalauthor Sáha, Petr
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