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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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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
ViscoélasticitéIndex. 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 : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=6077
in INTERNATIONAL POLYMER PROCESSING > Vol. XXIV, N° 4 (09/2009) . - p. 326-333[article]Réservation
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