Published June 2003
| Version v1
Journal article
Investigation of the interfacial instabilities in the coextrusion flow of PE and PS
- Others:
- Centre de Mise en Forme des Matériaux (CEMEF) ; Mines Paris - PSL (École nationale supérieure des mines de Paris) ; Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)
- Institut Non Linéaire de Nice Sophia-Antipolis (INLN) ; Université Nice Sophia Antipolis (1965 - 2019) (UNS) ; COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Centre National de la Recherche Scientifique (CNRS)
Description
The interface instability of the coextrusion flow of a polyethylene and a polystyrene is experimentally studied with industrial and laboratory equipments for various flow rates and temperature. Stable and unstable coextrusion conditions are identified as a function of flow rate ratio, shear rate and temperature. It is found that temperature and flow rate ratio are the most relevant parameters. Experimental results are then compared with stability analysis assuming White-Metzner constitutive equations. Agreement is fair at temperatures of 180 °C and 200 °C. However the longwave stability analysis is not sufficient to predict all experimental data.
Abstract
International audience
Additional details
- URL
- https://hal-mines-paristech.archives-ouvertes.fr/hal-00613066
- URN
- urn:oai:HAL:hal-00613066v1
- Origin repository
- UNICA