Comparative Damping of Composite Materials Filled With Metal Polymer Complex and FeCo/C-N Nanoparticles

Materials based on hybrid bimetallic particles with a polyacrylamide shell can act as an efficient centers of energy dissipation in filled composites and reveal more effectiveness than nanoparticles, which, due to their higher surface-to-volume ratio and low interfacial adhesion, can affect the final composite performance. Two types of fillers were obtained as part of polymer-mediated synthesis and subsequent thermolysis and later encapsulated into a LDPE matrix. The metal-polymer complex increases the damping capacity of the hosting material up to 25% at higher concentration. However, the nanoparticles showed a strong increase at 5 wt% (by 20%) and then a sharp decline, which makes metal-polymer particles more suitable for damping purposes.