Construction of Graphene/Fe3O4@Hollow Glass Microsphere Composite Foam with Excellent Electromagnetic Interference Shielding, Joule Heating, and Flame-Retardant Properties
Year: 2026
Type: article
Abstract: The development of lightweight multifunctional materials integrating electromagnetic interference (EMI) shielding, Joule heating and flame retardancy is highly demanded for advanced electronics and aerospace systems. Herein, we fabricate graphene/Fe3O4@hollow glass microsphere (G/Fe3O4@HGM) composite foam with an ultralow density of 0.36 g/cm−3. The porous structure synergizes graphene’s conductivity, Fe3O4’s magnetism and HGM’s low thermal conductivity to optimize impedance matching. The foam delivers absorption-dominated EMI shielding with a maximum X-band shielding effectiveness (SE) of 60.1 dB and an average absorption coefficient of 0.56, which effectively suppresses secondary electromagnetic reflection pollution. The composite exhibits stable voltage-controllable Joule heating: the 25 wt% Fe3O4@HGM sample reaches 91.3 °C at 16 V, enabling rapid de-icing within 200 s and stable thermal maintenance at −20 °C. Flame tests confirm no combustion or structural collapse under open flame. This work provides a simple fabrication strategy for lightweight multifunctional materials applicable to aerospace stealth, electronic thermal management and anti-icing systems.
Source: Molecules
Authors: Huan Yue, Shigang Li, Yixian Lv, Xueqing Wang, Jinlong Pan, Hao Wu, Heng Zhang, Heng Zhang, Hexin Zhang, Hexin Zhang
Institutions: Pingdingshan University, Anhui University of Technology
Language: English
Field: Materials Science
Domain: Physical Sciences
Open Access status: gold
Estimated APC paid: $3,258
Funder: Pingdingshan University
OpenAlex ID: W7202397265