Time–temperature superposition of silicone rubber embedded with irregular-shaped magnetic particles under different magnetic fields
The present work reports an investigation of the thermomechanical dynamic viscoelastic properties of a magnetorheological (MR) elastomer embedded with electrolytic iron particles (EIP, 40% wt, irregular shapes) in a silicone matrix. Unlike conventional MREs produced from spherical carbonyl iron particles, irregular flake-shaped EIPs offer greater particle–particle interactions and enhanced field sensitivity. The temperature rise from 30 to 70 °C significantly influences the m
Researchers have explored the mechanical properties of a silicone rubber composite containing irregular iron particles, which are sensitive to magnetic fields. Unlike materials with spherical particles, these flake-shaped particles exhibit stronger interactions and heightened responsiveness to magnetic fields. The study found that increasing the temperature from 30 to 70 degrees Celsius significantly alters the material's stiffness and damping characteristics, with thermal energy eventually overcoming the particle alignment at higher temperatures. A time-temperature superposition master curve was also developed for this composite, highlighting its dual sensitivity to both temperature and magnetic field intensity.
This research introduces a new type of magnetically responsive material with adjustable thermal properties, potentially improving the performance of vibration control systems in environments with fluctuating temperatures.
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