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Title: The influence of glass fibers on elongational viscosity studied by means of optical coherence tomography and X-ray computed tomography

We report on the flow characteristics of glass-fiber-reinforced polymers in elongational rheometry. Unlike polymers with geometrically isotropic fillers, glass-fiber-reinforced polymers exhibit flow behavior and rheology that depend heavily on the orientation, the length distribution and the content of the fibers. One of the primary objectives of this study was to determine the effect of fiber orientation, concentration and distribution on the entrance pressure drop by means of optical coherence tomography (OCT), full-field optical coherence microscopy (FF-OCM), and X-ray computed tomography (X-CT). Both pressure drop and melt flow were analyzed using a special elongation die (Thermo Scientific X-Die [3]) for inline measurements. Samples with a variety of fiber volume fractions, fiber lengths and processing temperatures were measured.
Authors:
; ; ; ;  [1] ;  [2] ; ;  [3] ;  [4] ; ;  [5]
  1. Institute of Polymer Extrusion and Compounding, Johannes Kepler University Linz (Austria)
  2. University of Applied Sciences Upper Austria (Austria)
  3. Research Center for Non Destructive Testing GmbH (Austria)
  4. Christian Doppler Laboratory for Microscopic and Spectroscopic Material Characterization, ZONA, Austria and Institute for Knowledge-based Mathematical Systems, Johannes Kepler University Linz (Austria)
  5. Christian Doppler Laboratory for Microscopic and Spectroscopic Material Characterization, ZONA (Austria)
Publication Date:
OSTI Identifier:
22271311
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 1593; Journal Issue: 1; Conference: PPS-29: 29. international conference of the Polymer Processing Society, Nuremberg (Germany), 15-19 Jul 2013; Other Information: (c) 2014 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; 36 MATERIALS SCIENCE; COMPUTERIZED TOMOGRAPHY; CONCENTRATION RATIO; ELONGATION; FIBERGLASS; FIBERS; OPTICAL MICROSCOPY; PRESSURE DROP; REINFORCED PLASTICS; RHEOLOGY; VISCOSITY; X RADIATION