Highly oriented three-dimensional structures of Fe3O4 decorated CNTs/reduced graphene oxide foam/epoxy nanocomposites against electromagnetic pollution

By Chaobo Liang, Ping Song, Aijie Ma, Xuetao Shi, Hongbo Gu, L. Wang, Huaili Qiu, Jie Kong, Junwei Gu. Composites Science And Technology, 2019

172 citations recorded by the source corpus.

Abstract Three-dimensional Fe3O4 decorated carbon nanotubes/reduced graphene oxide foam/epoxy (3D Fe3O4-CNTs/rGF/EP) nanocomposites with highly oriented three-dimensional structures were fabricated by facile template method. Scanning electron microscope (SEM), transmission electron microscope (TEM), thermal gravimetric analyses (TGA), X-ray photoelectron spectroscopy (XPS) and Raman all proved the successfully graft of Fe3O4 onto the surface of CNTs and the formation of interconnected 3D highly aligned porous framework inner Fe3O4-CNTs/rGF. Owing to the presence of Fe3O4 and 3D nanohybrid framework, the obtained 3D Fe3O4-CNTs/rGF/EP nanocomposites with 0.24 wt% rGF and 2.76 wt% Fe3O4-CNTs showed remarkable electrical conductivity of 15.3 S/m and wonderful EMI SE value of 36 dB within the X-band range, almost 482% enhancement compared to physically blended Fe3O4-CNTs/EP nanocomposites without three-dimensional structure (∼6 dB). The excellent magnetic property and efficient 3D framework structures are considered as the main reasons for outstanding EMI shielding performances of the 3D Fe3O4-CNTs/rGF/EP nanocomposites.

Subfields: Aerospace Engineering, Biomedical Engineering, Electronic, Optical and Magnetic Materials

View Paper: https://www.semanticscholar.org/paper/2d6b5a40a4c9b222bd2d7882a2a86a7b948a8207