Waterborne Composite Of Graphene Barium Oxide, Iron Oxide And Polymer For X Band Electromagnetic Wave Absorber

Abstract

This study focuses on the development of a novel BaO–Fe₂O₃–Graphene–PMMA–PBA composite coating comprising a polymer matrix reinforced with graphene and barium oxide and iron oxide, specifically designed for the absorption of X-band electromagnetic waves (8–12 GHz), with potential applications in the defense sector. The composite integrates the excellent conductivity for electricity of graphene with the dielectric qualities of barium oxide and iron oxide in response to the rising requirement for efficient electromagnetic shielding in contemporary technological and military technologies. X-ray diffraction (XRD) was used to analyse the composite's structural and morphological properties, and the results confirmed that the fillers were evenly distributed throughout the polymer matrix, assuring that the fillers are evenly distributed throughout the polymer matrix. Electromagnetic parameters, including reflection loss and absorption efficiency, were assessed with a vector network analyser. The results demonstrate that formulated composite coating exhibits excellent electromagnetic wave absorption, significantly minimizing reflection and effectively attenuating X-band frequencies. Owing to its strong absorption capabilities and material synergy, this composite shows great promise for applications in radar wave absorption, stealth technology, and electromagnetic interference (EMI) shielding.