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Processing-induced Properties in Glassy Polymers

Development of the Yield Stress in PC
  • L. E. Govaert , T. A. P. Engels , E. T. J. Klompen , G. W. M. Peters und H. E. H. Meijer
Veröffentlicht/Copyright: 30. April 2013
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International Polymer Processing
Aus der Zeitschrift International Polymer Processing Band 20 Heft 2

Abstract

A new method is employed to directly predict the development of yield stress distributions in injection molded products of glassy polymers. The approach is based on the results of a study on the temperature dependence of the evolution of yield stress during annealing of polycarbonate below Tg. In combination with the process-related thermal history, derived from numerical simulations of the injection molding process, an estimate of the yield stress distribution throughout a product can be obtained. Computed yield stresses of injection molded plates prove to be in excellent agreement with the experimental values, including their dependence on mold temperature and plate thickness.

∗ Mail address: L. E. Govaert, Dutch Polymer Institute, Section Materials Technology, Eindhoven University of Technology, P.O. Box 513, NL-5600 MB, Eindhoven, Netherlands E-mail:

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Received: 2004-10-10
Accepted: 2005-1-26
Published Online: 2013-04-30
Published in Print: 2005-05-01

© 2005, Carl Hanser Verlag, Munich

Artikel in diesem Heft

  1. Contents
  2. Contents
  3. Editorial
  4. International Polymer Processing Special Issue Macro 2004
  5. Invited Paper
  6. A Dilatometer to Measure the Influence of Cooling Rate and Melt Shearing on Specific Volume
  7. Monitoring Reactive Processes along the Extruder
  8. Stretch and Shape Distributions of Droplets with Interfacial Tension in Chaotic Mixing
  9. Cast Film Extrusion
  10. Nozzle Injection of Physical Blowing Agents in the Injection Molding of Microcellular Foams
  11. Visualization Analysis of Asymmetric Fountain Flow Phenomenon in Injection Molding of Filler-reinforced Resins by Rotary Runner Exchange System
  12. In-process Monitoring of Micromoulding – Assessment of Process Variation
  13. Processing-induced Properties in Glassy Polymers
  14. Structure Development in Injection Molding: A 3D Simulation with a Differential Formulation of the Kinetic Equations
  15. Evolution of Morphology of iPP in Processing Conditions
  16. Regular Contributed Articles
  17. 3D Simulation of Gas Assisted Injection Molding Analysis of Primary and Secondary Gas Penetration and Comparison with Experimental Results
  18. Microcellular Injection Molding
  19. Effect of Material Species on Flash Generation of PPS/GF Composites
  20. PPS News
  21. PPS News
  22. Seikei-Kakou Abstracts
  23. Seikei-Kakou Abstracts
https://doi.org/10.3139/217.1870

Artikel in diesem Heft

  1. Contents
  2. Contents
  3. Editorial
  4. International Polymer Processing Special Issue Macro 2004
  5. Invited Paper
  6. A Dilatometer to Measure the Influence of Cooling Rate and Melt Shearing on Specific Volume
  7. Monitoring Reactive Processes along the Extruder
  8. Stretch and Shape Distributions of Droplets with Interfacial Tension in Chaotic Mixing
  9. Cast Film Extrusion
  10. Nozzle Injection of Physical Blowing Agents in the Injection Molding of Microcellular Foams
  11. Visualization Analysis of Asymmetric Fountain Flow Phenomenon in Injection Molding of Filler-reinforced Resins by Rotary Runner Exchange System
  12. In-process Monitoring of Micromoulding – Assessment of Process Variation
  13. Processing-induced Properties in Glassy Polymers
  14. Structure Development in Injection Molding: A 3D Simulation with a Differential Formulation of the Kinetic Equations
  15. Evolution of Morphology of iPP in Processing Conditions
  16. Regular Contributed Articles
  17. 3D Simulation of Gas Assisted Injection Molding Analysis of Primary and Secondary Gas Penetration and Comparison with Experimental Results
  18. Microcellular Injection Molding
  19. Effect of Material Species on Flash Generation of PPS/GF Composites
  20. PPS News
  21. PPS News
  22. Seikei-Kakou Abstracts
  23. Seikei-Kakou Abstracts
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