Facile preparation of lightweight PE/PVDF/Fe3O4/CNTs nanocomposite foams with high conductivity for efficient electromagnetic interference shielding

Lightweight Epoxy/Cotton Fiber-Based Nanocomposites with Carbon and Fe3O4 for Electromagnetic Interference Shielding

“… 11 , 44 The diffraction peaks in the (002) planes are attributed to the presence of graphite. 10 , 11 , 45 Meanwhile, peaks in the (020) plane, at 2θ = 22.6°, are typical signals of cellulose fibers ( Figure S5 ). 46 …”

“…Fe 3 O 4 nanoparticles are recognized as a group of cheap and effective additives that are frequently used in the fabrication of magnetic materials to improve the magnetic losses. 10 , 11 , 45 , 48 Moreover, the surface feature is another key factor, which should be carefully considered in the fabrication of EMI shielding composites. 14 , 49 On the basis of mechanism-oriented design conception, two fabrication methods had been applied in this work.…”

“…The EMI shielding performance was investigated using a vector network analyzer (VNA, Agilent N5234A) at room temperature, combined with two face-to-face waveguide-to-coaxial adaptors, in the range of 18–26.5 GHz (Ku band). 10 The VNAS scattering parameter was calibrated before the measurements. The samples that must be measured were cut into a rectangle shape with a size of 10.6 mm (length) × 4.3 mm (width) to match the waveguide holders.…”

Preparation of Glass Fiber/Poly(Ether Ether Ketone) Composite Foam with Improved Compressive Strength and Heat Resistance

“…At present, polymer foams are mainly prepared from common plastics such as polymethyl methacrylate (PMMA), [ 25–27 ] polystyrene (PS), [ 28–30 ] polypropylene (PP), [ 31–33 ] and polyethylene (PE). [ 34,35 ] However, as a result of the increasing range of applications of these polymer foams, especially those involving extreme environments, the development of high‐performance foams is urgently required. Poly(ether ether ketone) (PEEK) is a special engineering plastic that has potential applications in high‐performance polymer foams owing to its excellent mechanical properties and heat resistance.…”

Light-weight carbon fiber/silver-coated hollow glass spheres/epoxy composites as highly effective electromagnetic interference shielding material

“…[22][23][24][25] Besides, compositing carbon material with magnetic fillers employing physical blending or surface decoration method have been proved to be an efficient way to improve absorption capability due to the improved impedance matching characteristics. 26,27 Zhao adopted melt blending and ScCO 2 foaming to prepare PE/PVDF/Fe 3 O 4 /CNTs nanocomposite foams, which presented total SE of 26 dB, while with corresponding specific SE of 110 dB cm 2 /g. 26 However, the introduction of magnetic nanoparticles onto the surface of conducting carbon materials hinders the electron transporting thus lowering the electrical conductivity of the composites, resulting in an decrease of electromagnetic shielding properties.…”