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The Dynamic Apparent Viscosity of Polymer Melts During Pulsatile Extrusion Flow with Vibration Force Field

Theory and Experiment
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Published/Copyright: April 6, 2013
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International Polymer Processing
From the journal International Polymer Processing Volume 23 Issue 1

Abstract

The dynamic apparent viscosity of polymer melts during pulsatile extruding flow with a vibration force field was studied on a self-made dynamic capillary rheometer (DCR). A theory that could reflect the vibration influence on the dynamic apparent viscosity was proposed. Due to the superposition of the vibration force field upon the steady shear flow, the phase difference between the shear stress and the shear rate could be chosen as a parameter to reflect the effect of vibration on the dynamic apparent viscosity. According to this theory, the average shear rate during pulsatile extrusion increased because of the existence of the phase difference, which caused the decrease of the dynamic apparent viscosity. The experimental results proved that the phase difference was reduced with the increase of vibration frequency, which resulted in a decrease in the dynamic apparent viscosity during the pulsatile extrusion.

∗ Mail address: GuangJiang He, National Engineering Research Center of Novel Equipment For Polymer Processing, South China University of Technology, Guangzhou 510640, PRC. E-mail:

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Received: 2006-1-7
Accepted: 2007-8-26
Published Online: 2013-04-06
Published in Print: 2008-03-01

© 2008, Carl Hanser Verlag, Munich

Articles in the same Issue

  1. Contents
  2. Contents
  3. Regular Contributed Articles
  4. The Dynamic Apparent Viscosity of Polymer Melts During Pulsatile Extrusion Flow with Vibration Force Field
  5. Generation of Microcellular Foams by Supercritical Carbon Dioxidein a PMMA Compound
  6. Influence of Uniaxial Extension on the Mechanical Properties of PET and PEN Films
  7. Analysis of the Isothermal Compression in Nanoimprint Lithography Assuming a Power-Law Fluid
  8. Non-Isothermal Simulation of the Film Blowing Process Using Multi-Mode Extended Pom-Pom Model
  9. Flow Analysis of Flat Spiral Dies and Comparison with Cylindrical Spiral Mandrel Dies
  10. Development of Polymer Blend Morphology along an Extruder with Different Screw Geometries
  11. A Mechanical Model for Stress Developmentin PA12 Tube Extrusion
  12. Shrinkage Analysis on Convex Shellby Injection Molding
  13. Melting Mechanism of Thermoplastic Elastomers and Comparison to Polyolefin Thermoplastic Melting Studies in a Single Screw Extruder
  14. Thermal Degradation of Meta- and Para-Aramid Fibers in Different Atmospheres
  15. Experimental Studies on Screw Characteristics in Closely Intermeshing Counter-rotating Twin Screw Extruder
  16. Experimental Analysis of Heat Transfer in Rotational Molding Process
  17. Polyetheretherketone Films with Low Thermal Expansion for Flexible Printed Circuit Boards
  18. Experimental Study and Modeling of Flow Behavior and Orientation Kinetics of Layered Silicate/Polypropylene Nanocomposites in Start-up of Shear Flows
  19. Polystyrene/Phosphonium Organoclay Nanocomposites by Melt Compounding
  20. PPS News
  21. PPS News
  22. Seikei-Kakou Abstracts
  23. Seikei-Kakou Abstracts
https://doi.org/10.3139/217.0002

Articles in the same Issue

  1. Contents
  2. Contents
  3. Regular Contributed Articles
  4. The Dynamic Apparent Viscosity of Polymer Melts During Pulsatile Extrusion Flow with Vibration Force Field
  5. Generation of Microcellular Foams by Supercritical Carbon Dioxidein a PMMA Compound
  6. Influence of Uniaxial Extension on the Mechanical Properties of PET and PEN Films
  7. Analysis of the Isothermal Compression in Nanoimprint Lithography Assuming a Power-Law Fluid
  8. Non-Isothermal Simulation of the Film Blowing Process Using Multi-Mode Extended Pom-Pom Model
  9. Flow Analysis of Flat Spiral Dies and Comparison with Cylindrical Spiral Mandrel Dies
  10. Development of Polymer Blend Morphology along an Extruder with Different Screw Geometries
  11. A Mechanical Model for Stress Developmentin PA12 Tube Extrusion
  12. Shrinkage Analysis on Convex Shellby Injection Molding
  13. Melting Mechanism of Thermoplastic Elastomers and Comparison to Polyolefin Thermoplastic Melting Studies in a Single Screw Extruder
  14. Thermal Degradation of Meta- and Para-Aramid Fibers in Different Atmospheres
  15. Experimental Studies on Screw Characteristics in Closely Intermeshing Counter-rotating Twin Screw Extruder
  16. Experimental Analysis of Heat Transfer in Rotational Molding Process
  17. Polyetheretherketone Films with Low Thermal Expansion for Flexible Printed Circuit Boards
  18. Experimental Study and Modeling of Flow Behavior and Orientation Kinetics of Layered Silicate/Polypropylene Nanocomposites in Start-up of Shear Flows
  19. Polystyrene/Phosphonium Organoclay Nanocomposites by Melt Compounding
  20. PPS News
  21. PPS News
  22. Seikei-Kakou Abstracts
  23. Seikei-Kakou Abstracts
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