Polyacrylonitrile based carbon cluster like composite materials were prepared by physical and chemical methods. The morphology and surface phases of polyacrylonitrile based carbon cluster like composite materials
were examined by SEM and XRD. The absorbents filled with carbon cluster like composite materials and carbon clus
ter like materials were prepared, respectively, and their micorwave absorption was measured over the frequency range
of 8 to 18 GHz. The results indicate that the absorption band of the absorbents filled with carbon cluster like composite
materials is more than that of the absorbents filled with carbon cluster like materials. Polyacrylonitrile based carbon
cluster like composite materials have the electric and magnetic loss ability.