Effect of secondary particles on the microstructure and mechanical properties of magnetorheological plastomers

Magnetorheological plastomers (MRPs) with two different types of fillers have attracted considerable attention for various advantages. However, the effect of secondary particles on mechanical properties is still under controversy due to its conflicting behaviors. In this work, MRPs with three kinds of secondary particles were prepared and their mechanical properties were systemically investigated. The experimental results showed the incorporation of glass balls (20 mu m in diameter) led to an increase in the mechanical properties. By contrast, SiO2 and Fe3O4 particles (1 mu m in diameter) showed a conflicting behavior. With the increase of secondary particle content, for MRP with SiO2, the storage modulus first increased and then decreased. But for MRP with Fe3O4, the storage modulus first decreased slightly and then increased. At last, the microstructures in MRPs were simulated by a particle-level dynamic method to investigate the effect of secondary particles on the microstructure and mechanical properties of MRPs.

Automated summary

The study systematically investigated the mechanical properties of Magnetorheological plastomers (MRPs) with different types of secondary particles through experiments and simulations. It was found that the addition of glass balls led to an increase in mechanical properties, while SiO2 and Fe3O4 particles exhibited conflicting behaviors. Simulation of microstructures in MRPs revealed the effect of secondary particles on the microstructure and mechanical properties of MRPs.