Hierarchical electromagnetic absorption in micro-waveguide stuffed with magnetic media for resin-based composites of graphene nanosheets and manganese oxides

Enhanced microwave absorption properties of flake-shaped FePCB metallic glass/graphene composites

“…After combining with graphene, the considerable drop of the e 0 of the FePCB/graphene composite effectively improves the impedance matching and thus benefits the microwave absorbing property. Besides, the planar shape of FePCB particles and graphene sheets are beneficial to the multi reflections and scattering of EM wave, which could be a minor reason for the EM wave attenuation [10]. When the FePCB alloy was replaced by the equal weight of graphene, the probability of the multi reflections and scattering would increase, thus further enhancing the absorbing ability.…”

“…Fe-P-C metallic glass is an important soft magnetic material and has been widely used as the key parts in many magnetic devices due to its high saturation magnetization, high permeability, good mechanical property and low cost [10]. These advantages also endow the Fe-P-C metallic glass an attractive microwave absorbing material in practical applications.…”

“…Compared with other dielectric additives, carbon-based materials including carbon nanotubes [14], carbon black [15], graphite [16] and graphene [10][11][12][13] possess exceptional advantages of low density, high thermal stability and high chemical stability. Until now, many carbonaceous material-alloy composites have been prepared and exhibited strong EM wave absorbing property.…”

Supercritical Fluid‐Facilitated Exfoliation and Processing of 2D Materials

“…Nanoclay‐containing nanocomposites yielded decreased peaks of heat release rate, demonstrating efficacy in flame resistance relative to polymer‐only foam controls . More recently Hu and coworkers reported using scDMF to exfoliate graphite and MnO 2 to produce graphene nanosheets and exfoliated MnO 2 nanosheets . The scDMF also promoted redox changes and mixed valence Mn oxide formation in the form of mixed shape nanocrystals .…”

Dissipation enhancement effect from titania semiconductor modulation of graphene-based electromagnetic absorbing composites

“…Thus, graphene-based nanocomposites have superior absorbing properties in microstructures. 1,3 However, in general nanomaterial lling methods, nanomaterial microstructures are oen not particularly designed in advance. It is difficult to fabricate composites that possess signicant performance improvement.…”