| Titre : |
Non-isothermal simulation of the film blowing process using multi-mode extended pom-pom model |
| Type de document : |
texte imprimé |
| Auteurs : |
S. Sarafrazi, Auteur ; F. Sharif, Auteur |
| Année de publication : |
2008 |
| Article en page(s) : |
p. 30-37 |
| Note générale : |
Bibliogr. |
| Langues : |
Anglais (eng) |
| Index. décimale : |
668.9 Polymères |
| Résumé : |
Plastic films are largely produced using the film blowing process. Branched polymers such as LDPE are commonly used in this process to produce a variety of plastic films. In this study, recently developed eXtended Pom-Pom (XPP) model, which focuses on describing rheological behavior of branched polymers, is employed to analyze the non-isothermal flow in the film blowing process. Furthermore, the Nakamura equation for crystallization kinetics is employed to consider crystallization effects and improve prediction of the state of the stress in the film. Results of the numerical analysis show good agreement with the experimental values reported by Tas (1994) for the bubble shape and film velocity of the LDPE films. Predictions for the strain rates in machine and hoop directions which are critical for the estimation of the stress are also compared with the reported data and showed reasonably good agreement. |
| DOI : |
10.3139/217.2010 |
| En ligne : |
https://drive.google.com/file/d/1WwcTXyLhP4FF-rCDlV-ePQgC4JeyQJT3/view?usp=drive [...] |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=2658 |
in INTERNATIONAL POLYMER PROCESSING > Vol. XXIII, N° 1 (03/2008) . - p. 30-37
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