title: Improved thermooxidation and sedimentation stability of covalently-coated carbonyl iron particles with cholesteryl groups and their influence on magnetorheology.
abstract: Sedimentation of particles in magnetorheological suspensions represents a crucial problem that concerns their efficient long-term application in practice. Prepared carbonyl iron (CI) microparticles coated with a low density substance, cholesteryl chloroformate, via a two-step reaction and immersed in silicone oil, exhibit three positive aspects: (1) the CI particle modification increased the compatibility between the particles and the silicone oil resulting in improved long-term stability (reduction in sedimentation); (2) the coating provided the particles with enhanced thermal stability in the oxygen atmosphere; and (3) rheological measurements proved a promising magnetorheological performance at different particle weight fractions.
authors: Centre of Polymer Systems, University Institute, Tomas Bata University in Zlin, Zlin, Czech Republic. mrlik@ft.utb.cz
authors: Miroslav
authors: M
authors: Mrlík
authors: Markéta
authors: M
authors: Ilčíková
authors: Vladimír
authors: V
authors: Pavlínek
authors: Jaroslav
authors: J
authors: Mosnáček
authors: Petra
authors: P
authors: Peer
authors: Petr
authors: P
authors: Filip