Abstract
Abstract The magnetorheological plastomers strengthened by glass microspheres (GMRPs) were prepared for acoustic materials with controllable properties and both the rheological properties and sound insulation characteristics were investigated. The addition of glass microspheres can improve the sound insulation at the whole frequency range. The increasing mass fraction of carbonyl iron powders and the magnetic field significantly affected the sound insulation at first resonance frequency. Finally, a vibration transfer method was established to predict the sound attenuation properties based on the mechanical properties and the fitting curve matched the experimental results very well.
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