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New Composite Elastomers with Giant Magnetic Response
Author(s) -
Chertovich A. V.,
Stepanov G. V.,
Kramarenko E. Yu.,
Khokhlov A. R.
Publication year - 2010
Publication title -
macromolecular materials and engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.913
H-Index - 96
eISSN - 1439-2054
pISSN - 1438-7492
DOI - 10.1002/mame.200900301
Subject(s) - materials science , viscoelasticity , elastomer , composite material , magnetorheological fluid , silicone rubber , rheometer , carbonyl iron , magnetorheological elastomer , composite number , magnetic field , dynamic mechanical analysis , natural rubber , shear (geology) , rheology , polymer , physics , quantum mechanics
Novel magnetorheological elastomers (MRE) based on a highly elastic silicone rubber filled with carbonyl iron magnetic particles of 3–5 and 3–50 µm are synthesized. The effect of an external homogeneous magnetic field on the viscoelastic properties of these materials is studied by dynamic experiments (shear oscillations on a rheometer). It is shown that the magnetic response of the MRE increases with a decrease of the strain. At 1% deformation both the storage and loss moduli of the new MRE demonstrate a giant response to the magnetic field, namely, an increase of more than two orders of magnitude in both moduli in a field of 300 mT is observed. In addition, these new MREs show a twofold increase of the damping ratio, which is important for their application as tunable vibration absorbers.