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Melting of Polymer Blends in Co-rotating Twin Screw Extruders

Part II: Theoretical Derivations
  • H. Potente , M. Bastian , J. Flecke and D. Schramm
Published/Copyright: June 5, 2013
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International Polymer Processing
From the journal International Polymer Processing Volume 16 Issue 2

Abstract

Part II of the publication describes a model for calculating the melting of polymer blends which has been implemented in the SIGMA simulation software for the design of co-rotating twin screw extruders. The model is based on the findings discussed in Part I and makes it possible to calculate the temperature progression in the solids conveying section and during the subsequent melting process for binary incompatible polymer combinations. The two material components are observed in parallel during the melting process, and the respective degrees of melting over the length of the screw are calculated. The properties of the melt phase, which forms from both components, are calculated with mixing rules implemented in the program. The calculations supply the melting profiles for both components, thereby permitting a comprehensive analysis of the melting of binary polymer combinations. The results additionally form the basis of a calculation to estimate the morphology development of polymer blends in the melting section of the extruder.

Part III of the report looks into a means of investigating the melting of binary polymer combinations, and the results of experimental investigations into polypropylene/polyamide blends are discussed. The simulation calculations are compared with the results of experimental studies in order to verify the model presented in this part of the publication.

* Mail address: M. Bastian, German Institute for Polymers, Schlossgartenstraße 6, D-64280 Darmstadt, Germany
Received: 1999-7-14
Accepted: 2001-2-19
Published Online: 2013-06-05
Published in Print: 2001-05-01

© 2001, Carl Hanser Verlag, Munich

Articles in the same Issue

  1. Editorial
  2. Ninth of a Series Pioneer of the Modular Co-rotating Twin Screw Extruder–Rudolf Erdmenger (1911–1991)
  3. Internal Mixer
  4. The “New-Generation” Co-flow Intermeshing Internal Mixer
  5. Screw Extrusion/Continuous Mixers
  6. Twin Screw Compounding of PE-HD Wood Flour Composites
  7. A Transient Melting Model of Polymer Balls Sliding Against the Barrel
  8. Prediction of Screw Length Required for Polymer Melting and Melting Characteristics
  9. Melting of Polymer Blends in Co-rotating Twin Screw Extruders
  10. Melting of Polymer Blends in Co-rotating Twin Screw Extruders
  11. Melting of Polymer Blends in Co-rotating Twin Screw Extruders
  12. The Mapping Method for Mixing Optimization Part I: The Multiflux Static Mixer
  13. The Mapping Method for Mixing Optimization
  14. Reactive Processing
  15. Comparison Studies of Anionic Polymerization of Caprolactam in Different Twin Screw Extruders
  16. Compatibilization of SBR/NBR Blends Using Chemically Modified Styrene Butadiene Rubber
  17. Coextrusion
  18. Convective Instabilities in the Coextrusion Process
  19. Numerical Simulation of Polymer Coextrusion Flows
  20. Thermoforming
  21. Tight Tolerance Thermoforming
https://doi.org/10.3139/217.1633

Articles in the same Issue

  1. Editorial
  2. Ninth of a Series Pioneer of the Modular Co-rotating Twin Screw Extruder–Rudolf Erdmenger (1911–1991)
  3. Internal Mixer
  4. The “New-Generation” Co-flow Intermeshing Internal Mixer
  5. Screw Extrusion/Continuous Mixers
  6. Twin Screw Compounding of PE-HD Wood Flour Composites
  7. A Transient Melting Model of Polymer Balls Sliding Against the Barrel
  8. Prediction of Screw Length Required for Polymer Melting and Melting Characteristics
  9. Melting of Polymer Blends in Co-rotating Twin Screw Extruders
  10. Melting of Polymer Blends in Co-rotating Twin Screw Extruders
  11. Melting of Polymer Blends in Co-rotating Twin Screw Extruders
  12. The Mapping Method for Mixing Optimization Part I: The Multiflux Static Mixer
  13. The Mapping Method for Mixing Optimization
  14. Reactive Processing
  15. Comparison Studies of Anionic Polymerization of Caprolactam in Different Twin Screw Extruders
  16. Compatibilization of SBR/NBR Blends Using Chemically Modified Styrene Butadiene Rubber
  17. Coextrusion
  18. Convective Instabilities in the Coextrusion Process
  19. Numerical Simulation of Polymer Coextrusion Flows
  20. Thermoforming
  21. Tight Tolerance Thermoforming
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