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

Year 2025, Volume: 8 Issue: 2, 794 - 806, 12.03.2025

Ali Onur Kaya , Mert Can Emre , İbrahim Halil Mutlu

https://doi.org/10.47495/okufbed.1596388

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

Electromagnetic Interference (EMI), Cobalt Ferrite (CoFe₂O₄), Wood Shavings, Hybrid Paint Systems, Microwave Absorption, Reflection Loss

Project Number

FBA-2023-6377

CoFe₂O₄ Nanopartikülleri ve Odun Talaş Katkısı İçeren Boyanın Mikrodalga Soğurma Özellikleri

Abstract

Elektromanyetik girişim (EMI) koruma ihtiyacı, manyetik ve dielektrik özellikleri birleştiren ileri düzey malzemelerin geliştirilmesine öncülük etmiştir. Bu çalışma, 3.2–5.0 GHz aralığında EMI korumasını artırmak için kobalt ferrit (CoFe₂O₄) nanopartikülleri (%5) ve odun talaşı (%10) içeren bir kompozit boya sunmaktadır. Odun talaşı, gözenekli yapısı ve dielektrik özellikleri sayesinde CoFe₂O₄'ün manyetik kayıp özelliklerini tamamlayarak elektromanyetik dalga soğurumunu artırmıştır. Bu boya, CoFe₂O₄ içeren sistemin 10 dB'lik performansını aşarak maksimum 12 dB soğurma koruma etkinliği (SE) elde etmiştir. Yansıma SE değerleri ise -1 ile +1 dB arasında azalmıştır. Bu çevre dostu ve maliyet etkin malzeme, endüstriyel ve savunma uygulamaları için önemli bir potansiyel sunmaktadır.

Keywords

Elektromanyetik Girişim (EMI), Kobalt Ferrit (CoFe₂O₄), Odun Talaşı, Hibrit Boya Sistemleri, Mikrodalga Absorpsiyonu, Yansıma Kaybı

Project Number

FBA-2023-6377

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