The optimization of Blister Disk geometry for mixing performance in co-rotating twin-screw extruder

Koki Matsumoto, Natsuki Kayamori, Tatsuya Tanaka, Yoshihiko Arao

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Extensional flow has been taken notice as the more efficient solution for improving the dispersion of nanocomposites than shear flow. One of the production processes of nanocomposites is melt extrusion with co-rotating twin-screw extruder (TSE) which is superior in terms of productivity and mixing performance. Then, we focused on "Blister Disk" which had many small holes for generating the extensional flow. However, the influences on the mixing performance by changing the geometry of Blister Disk have not been investigated as far as we know. Therefore, the objective of this study is the optimization of Blister Disk geometry (e.g. hole numbers, hole diameter and disk length) for improving the dispersion of nanocomposites. Primary, the extensional flow state was investigated at the Blister Disk with FEM analysis. Secondly, to validate the simulation results experimentally, the polypropylene reinforced multi-walled carbon nanotube (PP/CNT nanocomposite) was used as the model of nanocomposite, and the dispersion state of CNT was investigated by morphological observation. As the result of these experiments, the better dispersion state of CNT was obtained as total permeation area and shorter hole length of Blister Disk was smaller because extensional and shear stress were increased.

Original languageEnglish
Title of host publicationProceedings of PPS-30
Subtitle of host publicationThe 30th International Conference of the Polymer Processing Society - Conference Papers
EditorsSadhan C. Jana
PublisherAmerican Institute of Physics Inc.
ISBN (Electronic)9780735413092
DOIs
Publication statusPublished - 2015 May 22
Externally publishedYes
Event30th International Conference of the Polymer Processing Society, PPS 2014 - Cleveland, United States
Duration: 2014 Jun 62014 Jun 12

Publication series

NameAIP Conference Proceedings
Volume1664
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Conference

Conference30th International Conference of the Polymer Processing Society, PPS 2014
CountryUnited States
CityCleveland
Period14/6/614/6/12

Keywords

  • Blister Disk
  • Extensional Flow
  • FEM analysis
  • PP/CNT Nanocomposite
  • Twin-Screw Extruder

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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    Matsumoto, K., Kayamori, N., Tanaka, T., & Arao, Y. (2015). The optimization of Blister Disk geometry for mixing performance in co-rotating twin-screw extruder. In S. C. Jana (Ed.), Proceedings of PPS-30: The 30th International Conference of the Polymer Processing Society - Conference Papers [200061] (AIP Conference Proceedings; Vol. 1664). American Institute of Physics Inc.. https://doi.org/10.1063/1.4918386