Rheological modeling and dynamic characteristics of disc extruders / A. A. Borisov in INTERNATIONAL POLYMER PROCESSING, Vol. XXVI, N° 4 (09/2011)  

[article]  inINTERNATIONAL POLYMER PROCESSING > Vol. XXVI, N° 4 (09/2011) . - p. 424-428 Titre : Rheological modeling and dynamic characteristics of disc extruders Type de document : texte imprimé Auteurs : A. A. Borisov, Auteur ; B. V. Berdyshev, Auteur ; H. Hosseini, Auteur ; B. Shirkavand-Hadavand, Auteur Année de publication : 2011 Article en page(s) : p. 424-428 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Extrudeuse rotative Modèles mathématiques Polymères Rhéologie Viscosimétrie Viscosité Index. décimale : 668.4 Plastiques, vinyles Résumé : Disc extruders have been employed for blending, mixing, dispersing, coloring, homogenizing, degassing, and granulating of polymers. One of the difficulties in the design of disc extruders is the evaluation of dynamic characteristics such as required power, momentum transfer rate, and applied torque, which indeed indicates the capability of the machine and its components. In this paper the required conditions and model for developing of elastic deformation of polymers in the disc extruders are studied. By rheological modeling of disc extruders and related elements, dynamic behavior of this processing system which highly depends on elastic properties of polymeric materials is obtained. These data are necessary for a proper design the system, and more accurate calculation its moving parts. DOI : 10.3139/217.2453 En ligne : https://drive.google.com/file/d/1SyX3LEdKawp4QrRjEERtl-nBhfkquJyb/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=12446 [article]

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Rheological modeling of polymeric melts in extruders upon two-dimensional shear flow / H. Hosseini in INTERNATIONAL POLYMER PROCESSING, Vol. XXXI, N° 1 (03/2016)  

[article]  inINTERNATIONAL POLYMER PROCESSING > Vol. XXXI, N° 1 (03/2016) . - p. 51-56 Titre : Rheological modeling of polymeric melts in extruders upon two-dimensional shear flow Type de document : texte imprimé Auteurs : H. Hosseini, Auteur ; V. Aseyev, Auteur ; B. V. Berdyshev, Auteur ; A. A. Borisov, Auteur Année de publication : 2016 Article en page(s) : p. 51-56 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Cinématique Cisaillement (mécanique) Etat fondu (matériaux) Matières plastiques -- Extrusion:Polymères -- Extrusion Rhéologie Index. décimale : 668.4 Plastiques, vinyles Résumé : The rheological modeling of a polymer melt in the course of its extrusion through a circular cylindrical channel inside a shaping die equipped with a rotating mandrel and a rotating or stationary nozzle is investigated. This paper attempts to provide a detailed rheological description of the physical processes of a polymer melt based on Leonov model inside the channel of an extruder under its kinematic deformation upon two-dimensional shear flow. Based on the obtained rheological equations of state, the flow process can be described in a form of dependencies reflecting kinematics of complex polymer deformation in the die channel. These expressions allow estimation of the velocity distribution for the flow elements within the channel as well as of the flow-pressure characteristics of the process. A quantitative relation between flow characteristics, rheological properties of polymer, and technical parameters of the channel of an extruder was determined. Comparison of this theoretical model with experimental results validates the suggested model. DOI : 10.3139/217.3131 En ligne : https://drive.google.com/file/d/1S5rfU8v8kMOVLcZybv_Netlt9U1V1ojR/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=25768 [article]

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