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Polymer coated carbonyl iron particles and their magnetorheological suspensions
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SYSNO ASEP 0361334 Document Type C - Proceedings Paper (int. conf.) R&D Document Type Conference Paper Title Polymer coated carbonyl iron particles and their magnetorheological suspensions Author(s) Sedlačík, M. (CZ)
Pavlínek, V. (CZ)
Sáha, P. (CZ)
Švrčinová, Petra (UH-J)
Filip, Petr (UH-J) ORCID, RID, SAISource Title Recent Researches in Geography, Geology, Energy, Environment and Biomedicine. - Athens : WSEAS, 2011 - ISBN 978-1-61804-022-0 Pages s. 289-293 Number of pages 5 s. Publication form CD-ROM - CD-ROM Action WSEAS International Conference on Engineering Mechanics, Structures, Engineering Geology /4./ (EMESEG '11) Event date 14.07.2011-16.07.2011 VEvent location Corfu Country GR - Greece Event type WRD Language eng - English Country GR - Greece Keywords carbonyl iron ; core-shell ; magnetorheological suspension ; oscillatory shear test ; polypyrrole ; sedimentation ; viscoelastic properties Subject RIV BK - Fluid Dynamics CEZ AV0Z20600510 - UH-J (2005-2011) Annotation Magnetically active particles of carbonyl iron/polypyrrole (CI/PPy) with core-shell microstructure were prepared in order to improve suspension stability of the magnetorheological (MR) suspensions which represents a significant obstacle for wider commercial applications of these smart systems. Morphology and magnetic properties were observed via scanning electron microscopy and vibrating sample magnetometry, respectively. The viscoelastic performance of the synthesized core-shell particles based MR suspensions was examined as a function of external magnetic field intensity and temperature in the small-strain oscillatory shear mode using a rotational rheometer. Furthermore, the PPy coating was found to play an important role in the dispersed particles-suspending medium interactions and, thus, enhanced suspension stability. Workplace Institute of Hydrodynamics Contact Soňa Hnilicová, hnilicova@ih.cas.cz, Tel.: 233 109 003 Year of Publishing 2012
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