Design and optimization of flexible PVDF composite films for attenuation of microwaves in X and Ku bands: the role of magnetic NdFeO <sub>3</sub> and dual carbon fillers
G. M. Mamatha, Pradipkumar Dixit, R. Hari Krishna
Abstract
The current work focus on synthesis of optimized ternary fillers filled polyvinylidene difluoride polymer composite films. The developed PVDF composite comprises of one magnetic filler (NdFeO3) and two conductive fillers-multi-walled carbon nanotubes (MWCNT) and graphene nanoplatelets (GNP). The evaluation of developed composite films for EMI shielding effectiveness (SE) has been carried out over a wide frequency range of X and Ku band. An experimental setup for measuring EMI SE using complex permeability and permittivity of composites has been done as per ASTM D5568 standard. The EMI SE performance of those tested composites is further verified, validated using ANSYS HFSS, a finite element analysis simulation software. Both experimental and simulation results reported, a PVDF film comprising 10 wt. % of NdFeO3, 5 wt. % MWCNT and 30 wt. % of GNP as a good EMI SE in both X and Ku band, that when compared to other various PVDF films developed.