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MISE EN ŒUVRE REACTIVE DES POLYMERES :
ETUDE ET MODELISATION DE LA DISPERSION EN MELANGEUR INTERNE D'UN LIQUIDE PEU VISQUEUX DANS UN POLYMERE FONDU

Abstract : The objective of this work is to build a model allowing the representation of the mixing phenomenon between two fluids having very different viscosities in an internal mixer, typically a cold plasticizer and a hot molten polymer. Experiments have been carried out through two different systems: ε-caprolactone with polycarbonate and polyamide 6.6 with N-butylbenzenesufonamide, under different operating conditions. Then, we present a dynamic model based on a simplified view of the flow and on mass, energy and momentum balances. As far as the mass transfer is concerned, we consider simultaneously the mechanical action of the rotors and the diffusive process. Heat transfer has to be considered because of the important temperature difference between the two components and the viscous dissipation. Finally, a momentum balance allows us to calculate the velocity profile and the torque time evolution by considering that the viscosity is concentration and temperature dependant. A study on parametric sensibility has been done to measure the influence of parameters on physical data simulated. Simulation results will show a good agreement between the model and experiments.
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https://tel.archives-ouvertes.fr/tel-00125596
Contributor : Laurent Adragna <>
Submitted on : Monday, January 22, 2007 - 8:45:48 AM
Last modification on : Wednesday, November 20, 2019 - 3:27:42 AM
Long-term archiving on: : Wednesday, April 7, 2010 - 2:25:52 AM

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  • HAL Id : tel-00125596, version 1

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Laurent Adragna. MISE EN ŒUVRE REACTIVE DES POLYMERES :
ETUDE ET MODELISATION DE LA DISPERSION EN MELANGEUR INTERNE D'UN LIQUIDE PEU VISQUEUX DANS UN POLYMERE FONDU. Génie des procédés. Université Claude Bernard - Lyon I, 2006. Français. ⟨tel-00125596⟩

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