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Electromagnetic interference (EMI) shielding performance of composites are usually limited by their electrical conductivity and permeability, which largely depend on the conductive filler content, aspect ratio, magnetic permeability, etc. Higher filler content usually leads to high cost, poor dispersion and easy agglomeration, making the polymer composites mechanically brittle and difficult to process...
Microwave absorption (MA) materials have gained wide range of applications including satellite communications, radar detections, etc. Here, for the first time we designed high-performance porous biomass-pyrolized carbon (PBPC) based on natural wood. The PBPC with orderly parallel channel structure is on the top among all MA materials, showing excellent MA performance with maximum reflection loss (RL)...
Carbon spheres (CSs) have been subjected to a high temperature annealing process at 2800°C under an Ar atmosphere. These high temperature annealed carbon spheres (HTACSs) have been characterised by SEM, HRTEM, BET surface area, XRD, Raman, SQUID and TGA techniques. The study indicates that the original spheroidal morphology of CSs have been converted to polyhedral. The graphitic flakes possessing...
Large-scale production of pure carbon spheres, with diameters from 50nm to 1μm, has been achieved via direct pyrolysis of a wide range of hydrocarbons, including styrene, toluene, benzene, hexane, cyclohexane and ethene, in the absence of catalyst. Specific systematic studies using styrene as the feedstock indicate that the sizes of the resulting of carbon nanospheres can be controlled quite well...
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