Abstract
A new kind of rubber composite was prepared by doping SrFe12O19 nanoparticles coated with silane coupling agents (Si-69) into nitrile butadiene rubber (NBR) matrix, which was characterized by the scanning electron microscopy and X-ray spectroscopy. The results showed that the SrFe12O19 nanoparticles were well dispersed in rubber matrix. Furthermore, the mechanical and magnetic properties of the rubber composites were investigated, in which the high tensile strength (15.8MPa) and high saturation magnetization (22.9emu/g) were observed. What is more, the high loss factor of the rubber composites was also obtained in a wide frequency range (0–100Hz) at high loading (80phr). The result is attributed to that the permanent magnetic field in rubber nanocomposites can absorb shock energy. These results indicate that the new kind of permanent magnetic rubber is expected to be a smart isolator material, in which the isolator will be able to adapt to a changed frequency.
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