EMI shielding effectiveness of carbon nanotubes based composites

Two carbon nanotubes (CNTs) composites and their electromagnetic interference shielding effectiveness (SE) have been investigated. The CNTs having aspect ratio of 500, 500-1000 and good conductive network are added into composites. The EMI shielding effectiveness (SE) of two composites containing CNTs are achieved up to 20 dB (>;99%). CNTs composites are the promising material as electromagnetic shielding materials for industrial applications. The characterization of morphology of carbon nanotubes and SE measurement results are presented and discussed.