Number of the records: 1
Rheological Characterization and Constitutive Modeling of Two LDPE Melts
- 1.
SYSNO ASEP 0327898 Document Type C - Proceedings Paper (int. conf.) R&D Document Type Conference Paper Title Rheological Characterization and Constitutive Modeling of Two LDPE Melts Title Reologická charakterizace a konstitutivní modelování dvou LDPE tavenin Author(s) Rolón-Garrido, V. H. (DE)
Pivokonský, Radek (UH-J) SAI, ORCID, RID
Filip, Petr (UH-J) ORCID, RID, SAI
Zatloukal, M. (CZ)
Wagner, M. H. (DE)Source Title Novel Trends in Rheology III. - Melville : American Institute of Physics, 2009 / Zatloukal Martin - ISSN 0094-243X - ISBN 978-0-7354-0689-6 Pages s. 32-43 Number of pages 12 s. Action Novel Trends in Rheology /3./ Event date 28.07.2009-29.07.2009 VEvent location Zlín Country CZ - Czech Republic Event type WRD Language eng - English Country US - United States Keywords Rheology ; MSF model ; shear flow ; elongational flow ; train hardening ; low-density polyethylene ; polymer melts Subject RIV BK - Fluid Dynamics R&D Projects IAA200600703 GA AV ČR - Academy of Sciences of the Czech Republic (AV ČR) CEZ AV0Z20600510 - UH-J (2005-2011) UT WOS 000270915900003 Annotation Experimental data of two low-density polyethylene (LDPE) melts at 200°C for both shear flow (transient and steady shear viscosity as well as steady first normal stress coefficient) and elongational flow (transient and steady-state elongational viscosity) were analyzed by use of the Molecular Stress Function (MSF) model for broadly distributed, randomly branched molecular structures. For quantitative modeling of melt rheology in both types of flow and in a very wide range of deformation rates, only three nonlinear viscoelastic material parameters are needed: While the rotational parameter and the structural parameter are found to be equal for the two melts considered, the melts differ in the parameter describing maximum stretch of the polymer chains. Workplace Institute of Hydrodynamics Contact Soňa Hnilicová, hnilicova@ih.cas.cz, Tel.: 233 109 003 Year of Publishing 2010
Number of the records: 1