Magnetorheological behavior of magnetoactive elastomers filled with bimodal iron and magnetite particlesстатья
Статья опубликована в высокорейтинговом журнале
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Дата последнего поиска статьи во внешних источниках: 18 апреля 2017 г.
Аннотация:Magnetoactive elastomers (MAE) based on soft silicone matrices, filled with various proportions
of large diameter (approximately 50 μm) iron and small diameter (approximately 0.5 μm)
magnetite particles are synthesized. Their rheological behavior in homogeneous magnetic fields
up to 600 mT is studied in detail. The addition of small magnetite particles facilitates fabrication
of uniformly distributed magnetic elastomer composites by preventing aggregation and
sedimentation of large particles during curing. It is shown that using the proposed bimodal filler
particles it is possible to tailor various magnetorheological (MR) properties which can be useful
for different target applications. In particular, either absolute or relative magnetorheological
effects can be tuned. The value of the damping factor as well as the range of deformation
amplitudes for the linear viscoelastic regime can be chosen. The interdependencies between
different MR properties of bimodal MAEs are considered. The results are discussed in the model
framework of particle network formation under the simultaneous influence of external magnetic
fields and mechanical deformation.