فهرست نشریات علمی دسترسی آزاد ایران

In this study, the microwave absorption performance of polymer composites, specifically the [SiC-CuS-PAA]₀.₅-PPy₀.₅ hybrid, was systematically investigated across the X-band (8–12 GHz) and Ku-band (12–18 GHz) frequency ranges. Samples were prepared with coating thicknesses of 2 mm, 2.5 mm, and 3 mm to evaluate the role of thickness in electromagnetic wave attenuation. The results demonstrated that the 2.5 mm thick coating delivered optimal performance, attaining a minimum reflection loss of −42.3 dB at 10.5 GHz, indicating strong microwave absorption. This enhancement stems from the synergistic interplay between the conductive polypyrrole (PPy) matrix and the SiC‑CuS‑PAA core–shell architecture, which promotes improved dielectric loss and superior impedance matching. The ability to tailor absorption characteristics by simply varying the coating thickness offers a versatile and practical route for designing high‑performance microwave absorbers. The composites exhibited a broad absorption bandwidth coupled with strong attenuation across the entire measured spectrum, underscoring their potential for electromagnetic interference (EMI) shielding in next‑generation electronics, telecommunications, and defense systems. Future work will concentrate on scalable fabrication, long‑term environmental stability, and further structural optimization to advance the efficiency and applicability of these absorbers.