Startseite Flow Visualisation in Co-rotating Twin Screw Extruders: Positron Emission Particle Tracking and Numerical Particle Trajectories
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Flow Visualisation in Co-rotating Twin Screw Extruders: Positron Emission Particle Tracking and Numerical Particle Trajectories

  • J. Diemer , C. Chilles , J. Colbert , T. Miri , A. Ingram , P. David , A. Sarhangi Fard und P. D. Anderson
Veröffentlicht/Copyright: 6. April 2013
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International Polymer Processing
Aus der Zeitschrift International Polymer Processing Band 26 Heft 5

Abstract

Co-rotating twin-screw extruders are widely used compounding machines. They are mainly configured based on extensive experience and iterative approaches to optimise output and composite quality. The visualisation technology developed in the EU-project PEPTFlow allows visualisation of composite flow in twin-screw extruders under realistic processing conditions by tracking radioactive tracer particles in the polymer melt, using a specially developed camera system. This new approach allows polymer flow to be studied in different screw elements and screw configurations under realistic compounding conditions at normal temperatures and melt pressures. The paper presents the latest developments in the camera systems as well as the different ways to use and interpret the results. Detailed analysis of residence times and residence time distributions for standard compound screw elements, like kneading discs, conveying elements and reverse elements are presented. In addition for a better understanding of the flow field inside twin-screw extruders, numerical particle tracking is done. The Stokes equation, using XFEM method, are solved and the numerical RTD's (residence time distribution) are compared for various screw designs.

∗ Mail address: Patrick D. Anderson, Materials Technology, Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven, The Netherlands. E-mail:

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Received: 2011-01-28
Accepted: 2011-05-18
Published Online: 2013-04-06
Published in Print: 2011-11-01

© 2011, Carl Hanser Verlag, Munich

Artikel in diesem Heft

  1. Contents
  2. Contents
  3. Regular Contributed Articles
  4. Applicability of the Impact Response Analysis Method for Reinforced Concrete Beams Mixed with Polyvinyl Alcohol Short Fibers
  5. Epoxy-Montmorillonite Nanocomposites Applied to Powder Coatings
  6. Direct Imprinting Using Magnetic Nickel Mold and Electromagnetism Assisted Pressure for Replication of Microstructures
  7. Automated Mold Heating System Using High Frequency Induction with Feedback Temperature Control
  8. The Prediction of Bowing Distortion of Film after Transverse Stretching with Consideration of Heated Air Flow in a Tenter
  9. The Influence of Injection Molding and Injection Compression Molding on Ultra-high Molecular Weight Polyethylene Polymer Microfabrication
  10. A Design-of-Experiment Study on the Microcellular Extrusion of Sub-critical CO2 Saturated PLA Pellets
  11. Optimization of Injection Molding Process for SGF and PTFE Reinforced PC Composites Using Response Surface Methodology and Simulated Annealing Approach
  12. Flow Visualisation in Co-rotating Twin Screw Extruders: Positron Emission Particle Tracking and Numerical Particle Trajectories
  13. The Influence of Melt and Process Parameters on the Quality and Occurrence of Part Defects in Water-assisted Injection Molded Tubes
  14. Model and Numerical Simulation for the Second Penetration in Water-assisted Injection Molding
  15. Influence of Extrusion Conditions on the Rheological Behavior of Nuclear Bituminized Waste Products
  16. Influence of Dicumyl Peroxide Content on Thermal and Mechanical Properties of Polylactide
  17. Rapid Communications
  18. Calculation of Average Residence Time in a Ko-kneader
  19. PPS-News
  20. PPS News
https://doi.org/10.3139/217.2475

Artikel in diesem Heft

  1. Contents
  2. Contents
  3. Regular Contributed Articles
  4. Applicability of the Impact Response Analysis Method for Reinforced Concrete Beams Mixed with Polyvinyl Alcohol Short Fibers
  5. Epoxy-Montmorillonite Nanocomposites Applied to Powder Coatings
  6. Direct Imprinting Using Magnetic Nickel Mold and Electromagnetism Assisted Pressure for Replication of Microstructures
  7. Automated Mold Heating System Using High Frequency Induction with Feedback Temperature Control
  8. The Prediction of Bowing Distortion of Film after Transverse Stretching with Consideration of Heated Air Flow in a Tenter
  9. The Influence of Injection Molding and Injection Compression Molding on Ultra-high Molecular Weight Polyethylene Polymer Microfabrication
  10. A Design-of-Experiment Study on the Microcellular Extrusion of Sub-critical CO2 Saturated PLA Pellets
  11. Optimization of Injection Molding Process for SGF and PTFE Reinforced PC Composites Using Response Surface Methodology and Simulated Annealing Approach
  12. Flow Visualisation in Co-rotating Twin Screw Extruders: Positron Emission Particle Tracking and Numerical Particle Trajectories
  13. The Influence of Melt and Process Parameters on the Quality and Occurrence of Part Defects in Water-assisted Injection Molded Tubes
  14. Model and Numerical Simulation for the Second Penetration in Water-assisted Injection Molding
  15. Influence of Extrusion Conditions on the Rheological Behavior of Nuclear Bituminized Waste Products
  16. Influence of Dicumyl Peroxide Content on Thermal and Mechanical Properties of Polylactide
  17. Rapid Communications
  18. Calculation of Average Residence Time in a Ko-kneader
  19. PPS-News
  20. PPS News
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