Temperature-Dependent Magnetic Properties of Magnetorheological Elastomers

We report on an investigation of the temperature-dependent magnetic properties magnetorheological elastomers (MREs). These are a class composites that consist magnetically permeable particles dispersed in nonmagnetic polymeric matrix. Under application external field, large deformation occurs altering mechanical these materials. Due to their magnetoelastic coupling response, materials finding increasing interest among scientific community. polymer-based composites’ performance depends many factors, which temperature is one biggest influencing factors requiring further investigation. In this work, isotropic and anisotropic polyurethane-based MRE with different iron (Fe) particle loading fractions (50%, 60%, 70%, 80% by weight) were investigated under temperatures. From analysis, magnetization curves observed overlap for measured values. The variation various including saturation differential susceptibility was also determined. results show ~2.5% decrement each fractions, between lowest (300 K) highest (400 temperature. On other hand, initial exhibits trends Generally, response seen be only slightly sensitive changes. addition, highly dependent orientation within elastomer.