Evaluation of the melting behavior and the melt penetration into the solid bed using a model experiment

Christian Kneidinger, Gernot Zitzenbacher, Manuel Längauer, Jürgen Miethlinger, Georg Steinbichler

Research output: Chapter in Book/Report/Conference proceedingsConference contributionpeer-review

1 Citation (Scopus)

Abstract

This work deals with the melting of polymeric bulk materials and the melt penetration into the solid bed utilizing a model experiment that simulates the melting process in single screw plasticating units. The polymer granules are pressed onto a heated rotating shaft. The thickness distribution of the resulting melt film is measured according to the principle of optical triangulation (light intersection). This new method and the measurement of the bulk density using a piston position measurement were presented earlier by the authors. The combination of these different principles allows the determination of the melt penetration into the solid bulk as it takes place in the delay zone of single screw plasticating units. The melting behavior of spheroidal and cylindrical shaped polypropylene-homopolymer (PP-H) bulk solids is analyzed at different applied pressure. Spheroidal bulk solids show significant advantages compared to cylindrical shaped granules which melt much slower, particularly at higher pressures. The melt clearly penetrates deeper into the spheroidal bulk compared to cylindrical bulk.

Original languageEnglish
Title of host publicationProceedings of the Regional Conference Graz 2015 - Polymer Processing Society PPS
Subtitle of host publicationConference Papers
EditorsClemens H. Holzer, Martin Payer
PublisherAmerican Institute of Physics Inc.
Number of pages5
Volume1779
ISBN (Electronic)9780735414419
DOIs
Publication statusPublished - 31 Oct 2016
EventRegional Conference of the Polymer Processing Society, PPS 2015 - Graz, Austria
Duration: 21 Sep 201525 Sep 2015

Publication series

NameAIP Conference Proceedings
Volume1779
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Conference

ConferenceRegional Conference of the Polymer Processing Society, PPS 2015
CountryAustria
CityGraz
Period21.09.201525.09.2015

Keywords

  • Kunststoffverarbeitung

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