Synthesis of CF@PANI hybrid nanocomposites decorated with Fe3O4 nanoparticles towards excellent lightweight microwave absorber

By Meng Zhang, Hailong Ling, Shiqi Ding, Yuxin Xie, Tingting Cheng, Laibin Zhao, Ting Wang, H. Bian, Hui Lin, Zhenjiang Li and 1 more. 2021

140 citations recorded by the source corpus.

Abstract Recently, lightweight has gradually become the most concerned property for a practical microwave absorber in the frequency range of 2-18 GHz. In this work, using commercial carbon fiber (CF) as matrix, the hybrid nanocomposites constructed by CF core, polyaniline (PANI) coating and dispersed Fe3O4 nanoparticles (NPs) were successfully synthesized by the electrodeposition and subsequent hydrothermal process. The systematic characterization results revealed that both PANI and Fe3O4 exerted positive roles in enhancing the microwave absorption properties of bare CF. Under the combined action of various components, the desired products (CF@PANI@Fe3O4 hybrid nanocomposites) exhibited remarkable microwave absorption performances, and the minimal reflection loss (RL) was -46.86 dB at a filler content of 10wt% and a matching thickness of 2.7 mm. Moreover, a synergistic mechanism was proposed according to multiple reflection/scattering, dipole polarization, interface polarization, eddy current and magnetic resonance, so as to demonstrate the multi-attenuation approaches of the incident electromagnetic wave.

Subfields: Aerospace Engineering, Electronic, Optical and Magnetic Materials

View Paper: https://www.semanticscholar.org/paper/1ab64d66126a01c0931ff263622649f4d1dce3ee