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Non-Newtonian and Non-Isothermal Modeling of 3D-Flow in an Internal Mixer

  • J. K. Kim and J. L. White
Published/Copyright: May 27, 2013
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International Polymer Processing
From the journal International Polymer Processing Volume 6 Issue 2

Abstract

In previous work we have applied hydrodynamic lubrication theory to simulate 3-dimensional flow of a polymer melt or elastomer in an internal mixer. That study presumed isothermal Newtonian flow in a flattened out mixing chamber. In the present paper, we take into consideration both non-Newtonian flow properties of the melt/elastomers and increase in temperature due to viscous dissipation heating. We consider the influence of non-Newtonian viscosity on flow patterns in the internal mixer. Viscous dissipation heating in the internal mixer is also modelled. It is shown that large scale internal mixers tend to operate adiabatically while small scale machines are close to isothermal. Temperature-time profiles are predicted for laboratory and large scale internal mixers.

* Mail address: Prof Dr. J. L. White, Institute of Polymer Engineering, University of Akron, Akron, Ohio 44325-0301, U.S.A.
Accepted: 1990-4-9
Published Online: 2013-05-27
Published in Print: 1991-05-01

© 1991, Carl Hanser Verlag, Munich

Articles in the same Issue

  1. Contents
  2. Contents
  3. Internal Mixers
  4. Spreader Blade Analogy of Flow Past an Internal Mixer Rotor
  5. Observation and Analysis of Carbon Black Agglomerate Dispersion in Simple Shear Flows
  6. Non-Newtonian and Non-Isothermal Modeling of 3D-Flow in an Internal Mixer
  7. Relationship between Rotor Designs in an Internal Mixer and Physical Properties of Mixed Rubber Compounds
  8. Dynamic Modelling of Internal Mixers Using System Identification Techniques
  9. Single Screw Processing
  10. Theoretical Principles Governing the Design of Barrier Sections in Extruders
  11. A Model of Flow in the Mixing Section of the List KoKneader
  12. Twin Screw Extrusion
  13. Drag and Pressure Flow in Twin Screw Extruders
  14. Feed Variance Limitations for Co-rotating Intermeshing Twin Screw Extruders
  15. Fluid Mechanics of Distributive Mixing in a Modular Intermeshing Corotating Twin Screw Extruder
  16. New Ways in the Manufacturing of Finished and Semi-finished Products from Nylon
  17. Mixing in Non-intermeshing Twin Screw Extruders
https://doi.org/10.3139/217.910103

Articles in the same Issue

  1. Contents
  2. Contents
  3. Internal Mixers
  4. Spreader Blade Analogy of Flow Past an Internal Mixer Rotor
  5. Observation and Analysis of Carbon Black Agglomerate Dispersion in Simple Shear Flows
  6. Non-Newtonian and Non-Isothermal Modeling of 3D-Flow in an Internal Mixer
  7. Relationship between Rotor Designs in an Internal Mixer and Physical Properties of Mixed Rubber Compounds
  8. Dynamic Modelling of Internal Mixers Using System Identification Techniques
  9. Single Screw Processing
  10. Theoretical Principles Governing the Design of Barrier Sections in Extruders
  11. A Model of Flow in the Mixing Section of the List KoKneader
  12. Twin Screw Extrusion
  13. Drag and Pressure Flow in Twin Screw Extruders
  14. Feed Variance Limitations for Co-rotating Intermeshing Twin Screw Extruders
  15. Fluid Mechanics of Distributive Mixing in a Modular Intermeshing Corotating Twin Screw Extruder
  16. New Ways in the Manufacturing of Finished and Semi-finished Products from Nylon
  17. Mixing in Non-intermeshing Twin Screw Extruders
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