Microwave Absorption Properties of Paint Containing CoFe₂O₄ Nanoparticles and Wood Shaving Additive

Authors : Ali Onur Kaya, Mert Can Emre, İbrahim Halil Mutlu

Pages : 794-806

Doi:10.47495/okufbed.1596388

View : 39 | Download : 42

Publication Date : 2025-03-12

Article Type : Research Paper

Abstract :The demand for effective electromagnetic interference (EMI) shielding has driven the development of advanced materials combining magnetic and dielectric properties. This study presents a composite paint with cobalt ferrite (CoFe₂O₄) nanoparticles (5 wt%) and wood shavings (10 wt%) for enhanced EMI shielding in the 3.2–5.0 GHz range. Wood shavings improved electromagnetic wave absorption through their porous structure and dielectric properties, complementing CoFe₂O₄’s magnetic loss characteristics. The paint achieved a peak absorption shielding effectiveness (SE) of 12 dB, surpassing the 10 dB of the CoFe₂O₄-only system. Reflection SE values were reduced to -1 to +1 dB. This eco-friendly and cost-effective material offers significant potential for industrial and defense applications.
Keywords : Elektromanyetik Girişim (EMI), Kobalt Ferrit (CoFe₂O₄), Odun Talaşı, Hibrit Boya Sistemleri, Mikrodalga Absorpsiyonu, Yansıma Kaybı