Electromagnetic Interference Shielding Performance of Highly Filled Lanthanum Ferrite (Lafe2o4) Perovskite with Multi-Walled Carbon Nano Tubes, Graphene in the Polyethylene Polymer Matrix in X-Band Frequency

Abstract

In the present investigation, a study was carried out with magnetic nanoparticles derived from the solution combustion process in a synergetic combination with the multi-walled carbon nanotubes (MWCNT) and graphene nanoplatelets (GNP). Nanofillers are incorporated with the Low-density polyethylene (LDPE) polymeric phase with the melt blending process. The polymer composite was studied for electromagnetic interference (EMI) shielding behavior from 8.2 to 12.4 GHz. The electromagnetic (EM) wave shielding was ascribed to the various dielectric and magnetic loss phenomena that occurred from incorporating graphene, MWCNT, and LaFe2O4. The addition of fillers increased the stability and engineering performance of the polyethylene composite. The maximum shielding effectiveness of 33.57 dB was obtained with the critical concentration of 50:5:40:5 weight % sample.

Keywords: EMI Shielding, Lanthanum ferrite, Graphene, Polyethene, MWCNT