Startseite Experimental Investigation and Flow Modeling of Slippage Induced by Additives in Polyolefins in a Modular Co-rotating Twin Screw Extruder
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Experimental Investigation and Flow Modeling of Slippage Induced by Additives in Polyolefins in a Modular Co-rotating Twin Screw Extruder

  • K. Ban , S. H. Bumm und J. L. White
Veröffentlicht/Copyright: 6. April 2013
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International Polymer Processing
Aus der Zeitschrift International Polymer Processing Band 24 Heft 3

Abstract

Experimental and simulation studies of flow of a slipping polymer melt in a co-rotating twin screw extruder are presented. The experiments involve a wide range of polyolefins (polyethylene, isotactic polypropylene, isotactic polybutene-1, isotactic poly 4 methylpentene-1, and a cyclopolyolefin) with an octadecanoic acid additive. Mooney's capillary method is used to prove the occurrence and magnitude of slippage. In the twin screw extruder experiments, the die pressure is reduced for the compounds with octadecanoic acid compared to the neat polyolefins. Screw characteristic curves (Q vs.dpdx) were determined experimentally for both the polyolefin compounds and the neat polyolefins. These were found to be rather close. We modeled flow of a slipping non-Newtonian(power law) fluid in a screw channel and calculated screw characteristic curves. These were found to be close to our experimental observations.

∗ Mail address: James L. White, Department of Polymer Engineering, University of Akron, Akron, Ohio 44325, USA. E-mail:

References

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Received: 2008-10-23
Accepted: 2009-02-06
Published Online: 2013-04-06
Published in Print: 2009-07-01

© 2009, Carl Hanser Verlag, Munich

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  2. Contents
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  4. Investigation of the Thickening Efficiency of HEUR on the Behavior of Two Different Latex Types
  5. Optimization of the Thickness of PET Bottles during Stretch Blow Molding by Using a Mesh-free (Numerical) Method
  6. An Experimental Setup to Measure the Transient Temperature Profiles in Water Assisted Injection Molding
  7. Experimental Investigation and Flow Modeling of Slippage Induced by Additives in Polyolefins in a Modular Co-rotating Twin Screw Extruder
  8. In-mold Melt Front Rate Control Using a Capacitive Transducer in Injection Molding
  9. Structural and Rheological Properties as a Function of Mixing Energy for Polymer/Layered Silicate Nanocomposites
  10. Study on Kneading and Molding of PP/TiO2 Nanocomposite
  11. Sustainable Biocomposites from Rice Flour and Sisal Fiber: Effect of Fiber Loading, Length and Alkali Treatment
  12. On-line Measurement Studies on Orientation Development and Characteristic Short-Period Diameter Fluctuation in High Speed In-line Drawing of Poly(ethylene terephthalate) Fiber
  13. Micro Replication by Injection-Compression Molding
  14. Utilizing Processing Parameters for Evaluating Polymer Viscosity during Plastication in Injection Molding
  15. PPS-News
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  17. Seikei Kakou Abstracts
  18. Seikei-Kakou Abstracts
https://doi.org/10.3139/217.2240

Artikel in diesem Heft

  1. Contents
  2. Contents
  3. Regular Contributed Articles
  4. Investigation of the Thickening Efficiency of HEUR on the Behavior of Two Different Latex Types
  5. Optimization of the Thickness of PET Bottles during Stretch Blow Molding by Using a Mesh-free (Numerical) Method
  6. An Experimental Setup to Measure the Transient Temperature Profiles in Water Assisted Injection Molding
  7. Experimental Investigation and Flow Modeling of Slippage Induced by Additives in Polyolefins in a Modular Co-rotating Twin Screw Extruder
  8. In-mold Melt Front Rate Control Using a Capacitive Transducer in Injection Molding
  9. Structural and Rheological Properties as a Function of Mixing Energy for Polymer/Layered Silicate Nanocomposites
  10. Study on Kneading and Molding of PP/TiO2 Nanocomposite
  11. Sustainable Biocomposites from Rice Flour and Sisal Fiber: Effect of Fiber Loading, Length and Alkali Treatment
  12. On-line Measurement Studies on Orientation Development and Characteristic Short-Period Diameter Fluctuation in High Speed In-line Drawing of Poly(ethylene terephthalate) Fiber
  13. Micro Replication by Injection-Compression Molding
  14. Utilizing Processing Parameters for Evaluating Polymer Viscosity during Plastication in Injection Molding
  15. PPS-News
  16. PPS News
  17. Seikei Kakou Abstracts
  18. Seikei-Kakou Abstracts
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