Investigation of the predictive/fitting capabilities of the molecular based constitutive equations for polymer melts

0023389 - ÚH 2006 RIV DE eng C - Conference Paper (international conference)
Pivokonský, Radek - Zatloukal, J. - Filip, Petr
Investigation of the predictive/fitting capabilities of the molecular based constitutive equations for polymer melts.
[K prediktivním možnostem molekulárně založených konstitutivních vztahů pro polymerní taveniny.]
PPS-21 : Proceedings of the 21st annual meeting of the Polymer Processing Society. Halle: Martin Luther University Halle-Wittenberg, Institute of Materials Sicence, 2005 - (Radusch, H.), nestr. ISBN 3-86010-784-4.
[PPS-21 : 21st annual meeting of the Polymer Processing Society. Leipzig (DE), 19.06.2005-23.06.2005]
R&D Projects: GA ČR GA103/05/2311; GA AV ČR(CZ) KJB2810401
Keywords : constitutive equations * extensional viscosity * polymer melts
Subject RIV: BK - Fluid Dynamics

Predictive/fitting capabilities of the XPP and PTT-XPP constitutive equations are compared in both shear and uniaxial elongational flows using two LDPE materials (Escorene LD 165 BW1 and Bralen RB 0323). Linear viscoelastic properties of both materials (storage G' and loss G'' moduli) where measured on the advanced rheometric expansion system (ARES) Rheometrics rheometer whereas the uniaxial extensional viscosity was determined with the help of ARES equipped with the SER Universal Testing Platform (SER-HV-A01) from Xpansion Instruments.

Pro případ smykových a elongačních toků dvou LDPE materiálů (Escorene LD 165 BW1 and Bralen RB 0323) byly porovnány predikční možnosti XPP a PTT-XPP modelů. Lineární viskoelastické vlastnosti obou materiálů (moduly G' a G'') byly měřeny s použitím reometru ARES, elongační viskozita navíc s použitím SER Universal Testing Platform (SER-HV-A01) od Xpansion Instruments.
Permanent Link: http://hdl.handle.net/11104/0112036