Fe₃O₄/expanded graphite/paraffin nanocomposites for both electromagnetic interference shielding and heat management

ERDEMİR F., Kilic N., Bilici S., Karakaya O., Baskara F., REİS H. A.

Materials Chemistry and Physics, vol.332, 2025 (SCI-Expanded) identifier

  • Publication Type: Article / Article
  • Volume: 332
  • Publication Date: 2025
  • Doi Number: 10.1016/j.matchemphys.2024.130277
  • Journal Name: Materials Chemistry and Physics
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, Aerospace Database, Chemical Abstracts Core, Chimica, Communication Abstracts, Compendex, INSPEC, Metadex, Civil Engineering Abstracts
  • Keywords: Electromagnetic interference, Expanded graphite, Heat management, Solvothermal synthesis
  • Karadeniz Technical University Affiliated: Yes

Abstract

A Fe₃O₄/expanded graphite (EG)/paraffin nanocomposite was successfully developed for electromagnetic interference (EMI) shielding and heat management. The combination of magnetic Fe₃O₄, non-magnetic EG, and paraffin resulted in an impressive EMI shielding effectiveness (EMI SE) of 67.26 dB with a thickness of 2.2 mm, far surpassing the commercial standard of 20 dB. A peak EMI SE of 89.74 dB was recorded at 10.8 GHz. The nanocomposite also demonstrated enhanced heat management properties, with a latent heat density of 164.7 J g⁻1, attributed to its dual EG-paraffin heat transfer network. The high phase transition enthalpy allowed the nanocomposite to absorb and retain significant heat, making it suitable for high-power and high-frequency electronic applications. These results highlight the potential of Fe₃O₄/EG/paraffin nanocomposites for effective EMI shielding and heat management.