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Modelling Post-molding Warping

Part 1 Volumetric Expansion
  • X.-J. Fan , R. Zheng , G. Liu , R. I. Tanner and G. Edward
Published/Copyright: April 6, 2013
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International Polymer Processing
From the journal International Polymer Processing Volume 25 Issue 1

Abstract

The post-molding warping of injection molded parts is strongly influenced by thermal expansion history. We show that a thermal expansion hysteresis loop occurs, so that heating and cooling curves can sometimes be different, due to microstructural changes. Following an extensive investigation of thermal expansion for a polypropylene, we propose a model to predict the specific volume change during post thermal treatments. The model predictions are in good agreement with the experimental measurements.

∗ Mail address: Xi-Jun Fan, School of Aerospace, Mechanical and Mechatronic Engineering, University of Sydney, Sydney, NSW, Australia. E-mail:

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Received: 2009-06-12
Accepted: 2009-09-26
Published Online: 2013-04-06
Published in Print: 2010-03-01

© 2010, Carl Hanser Verlag, Munich

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  1. Contents
  2. Contents
  3. Editorial
  4. Professor James Lindsay White 1938–2009
  5. Regular Contributed Articles
  6. Effect of Clay on Thermal, Mechanical and Gas Barrier Properties of Biodegradable Poly(lactic acid)/Poly(butylene succinate) (PLA/PBS) Nanocomposites
  7. Thermo-mechanical Properties of Urea-based Pattern Molding Compounds for Investment Casting
  8. Erosion Wear Analysis of SiC Filled Glass-Epoxy Composites using Taguchi Technique
  9. Production and Characterization of PP/LDPE Blend Filament Yarns under Industrial Conditions
  10. Modelling Post-molding Warping
  11. Modelling Post-molding Warping
  12. Appropriate Boundary Conditions in the Flow of Molten Polymers
  13. Multiscale Simulation of Injection Molding of Parts with Low Aspect Ratio Microfeatures
  14. PPS-News
  15. PPS News
  16. Seikei Kakou Abstracts
  17. Seikei-Kakou Abstracts
  18. Polímeros: Ciência e Tecnologia Abstracts
  19. Polímeros: Ciência e Tecnologia – Abstracts
https://doi.org/10.3139/217.2300

Articles in the same Issue

  1. Contents
  2. Contents
  3. Editorial
  4. Professor James Lindsay White 1938–2009
  5. Regular Contributed Articles
  6. Effect of Clay on Thermal, Mechanical and Gas Barrier Properties of Biodegradable Poly(lactic acid)/Poly(butylene succinate) (PLA/PBS) Nanocomposites
  7. Thermo-mechanical Properties of Urea-based Pattern Molding Compounds for Investment Casting
  8. Erosion Wear Analysis of SiC Filled Glass-Epoxy Composites using Taguchi Technique
  9. Production and Characterization of PP/LDPE Blend Filament Yarns under Industrial Conditions
  10. Modelling Post-molding Warping
  11. Modelling Post-molding Warping
  12. Appropriate Boundary Conditions in the Flow of Molten Polymers
  13. Multiscale Simulation of Injection Molding of Parts with Low Aspect Ratio Microfeatures
  14. PPS-News
  15. PPS News
  16. Seikei Kakou Abstracts
  17. Seikei-Kakou Abstracts
  18. Polímeros: Ciência e Tecnologia Abstracts
  19. Polímeros: Ciência e Tecnologia – Abstracts
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