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Application of the PTT model for capillary extrusion of rubber compounds / S. H. Choi in INTERNATIONAL POLYMER PROCESSING, Vol. XXIV, N° 4 (09/2009)

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inINTERNATIONAL POLYMER PROCESSING > Vol. XXIV, N° 4 (09/2009) . - p. 326-333

Titre :	Application of the PTT model for capillary extrusion of rubber compounds
Type de document :	texte imprimé
Auteurs :	S. H. Choi, Auteur ; M.-Y. Lyu, Auteur
Année de publication :	2009
Article en page(s) :	p. 326-333
Note générale :	Bibliogr.
Langues :	Anglais (eng)
Catégories :	Alliages polymères Caoutchouc Elastomères -- Extrusion Extrusion capillaire Gonflement (physique) Phénomènes de relaxation (matériaux) Simulation par ordinateur Viscoélasticité
Index. décimale :	668.9 Polymères
Résumé :	Rubber compounds have high viscoelastic property. One of the viscoelastic behaviors shown in profile extrusion is an extrudate swell and circulation flow at the corner of inside of die. Application of viscoelastic model to a capillary extrusion has been investigated in this study. Experiments and simulations have been performed using Fluidity Tester and commercial computational fluid dynamics (CFD) code, Polyflow respectively. Die swell of rubber compounds in a capillary die were predicted using a non-linear differential viscoelastic model, Phan-Thien and Tanner (PTT) model for various relaxation times and relaxation modes. As relaxation time and number of relaxation mode increase, die swell increases. The results of simulations were compared with the experiment. Pressure and velocity distributions, and circulation flows at the corner of reservoir have been analyzed through computer simulation. Two and three relaxation modes with large range of relaxation time examined in this study showed good agreement with experimental results of die swell and well represented circulation flow at the corner of reservoir in the capillary die.
DOI :	10.3139/217.2172
En ligne :	https://drive.google.com/file/d/1gPjMzxXA2tjrSuEJaB3HFkPoWSt4QHJG/view?usp=drive [...]
Format de la ressource électronique :	Pdf
Permalink :	https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=6077

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