Phase separation of highly filled powder/polymer compounds

0366758 - ÚH 2012 RIV US eng C - Conference Paper (international conference)
Hausnerová, B. - Filip, Petr - Jiránek, L. - Sáha, P.
Phase separation of highly filled powder/polymer compounds.
Mathematical Methods and Techniques in Engineering and Environmental Science. Stevens Point, Wisconsin: WSEAS Press, 2011 - (Demiralp, M.; Bojkovic, Z.; Repanovici, A.), s. 257-260. ISBN 978-1-61804-046-6.
[WSEAS International Conference on Materials Science (MATERIALS '11) /4./. Catania (IT), 03.11.2011-05.11.2011]
R&D Projects: GA ČR GA103/08/1307
Grant - others:GA MŠk(CZ) ED2.1.00/03.0111
Institutional research plan: CEZ:AV0Z20600510
Keywords : highly-filled compounds * phase separation * flow pattern * testing mould * energy dispersive X-ray analysis
Subject RIV: BK - Fluid Dynamics

Highly filled polymeric compounds naturally exhibit rather complex flow behaviour, accompanied with separation of material components (powder and polymer) during high shear deformation processes. An understanding of rheology of such systems thus plays a crucial role in solving the critical quality issues of the process. This paper proposes a new design of the testing mould allowing observing the flow pattern in geometrically critical situations causing separation. Then, scanning electron microscopy analysis of particular cross sections derived from this testing mould, combined with energy dispersive X-ray analysis of the distribution of elements typical for powder and polymer component, is employed in order to provide a quantitative evaluation of phase separation. In comparison to previous approaches reported heretofore it offers quantitatively significant results and thus might be further used in the simulation approaches in order to optimize the processing of highly filled compounds.
Permanent Link: http://hdl.handle.net/11104/0201630