Disclosed is an electromagnetic shielding material with enhanced shielding
effectiveness and mechanical property by employing a carbon nanotube and
a metal as an electrical conductor. The electromagnetic shielding
material includes a polymer resin for a matrix and two conductive fillers
having a carbon nanotube and a metal, wherein a volume percent of the
carbon nanotube ranges about 0.2% to about 10% and a volume percent of
the metal powder ranges about 7.0% to about 30% so that the total volume
percent of the conductive filler is in a range of about 7.2% to about
40%.