The influence of glass fibres on the longational viscosity studied by means of optical coherence tomography and X-ray computed tomography
M. Aigner, D. Salaberger - The influence of glass fibres on the longational viscosity studied by means of optical coherence tomography and X-ray computed tomography - PPS 29 Proceedings, Nürnberg (Deutschland) / Nuremberg (Germany), Germany, 2013
We report on the flow characteristics of glass-fiber-filled polymers in elongational rheometry. Unlike polymers with
geometrically isotropic fillers, glass-fiber-filled 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 ) for inline measurements. Samples with a variety
of fiber volume fractions, fiber lengths and processing temperatures were measured.