EMI shielding performance of Ni substituted cobalt ferrite loaded polypyrrole nanocomposites

摘要

EMI shielding materials Ni-substituted cobalt ferrites nanoparticles in polypyrrole matrix has been prepared by in-situ polymerization method and shielding performance of the materials was investigated. The synthesized samples have been characterized by XRD, FTIR, TGA, VSM and VNA instruments. XRD and FTIR confirmed the development of polymer-ferrite nanocomposites.TGA and VSM results shows the enhanced thermal and magnetic of the nanocomposites. Electromagnetic shielding effectiveness measurements of the nanocomposites yield the value up to 48.7dB that are useful in industrial applications of shielding.