Synthesis and Millimeter Wave Attenuation Properties of the FeCl3-Graphite Intercalation Compound

The graphite intercalation compound with large exfoliated volume was prepared by chemical oxidation method. The experimental parameters on the exfoliated volume were discussed in detail. It was found that the optimum preparing conditions went as follows: the mass ratio of graphite flakes:C2H5COOH:FeCl3:CrO3=1:2.8:0.3:0.2, the reaction temperature and time were 30 °C and 40 minutes, respectively. The exfoliated volume of GIC reached up to 575 mL·g1 in the conditions. The composition, structure and properties of the graphite intercalation compound were characterized and analyzed by SEM, TG, DSC, VSM techniques. The millimeter wave (MMW) attenuation performances of GIC were investigated by MMW radar measurement device. The results showed that the MMW attenuation properties of FeCl3-GIC are batter than H2SO4-GIC because of its magnetic absorption for millimeter wave.