Electromagnetic shielding material

摘要

An electromagnetic shielding material comprising a composition consisting of Mn-Zn ferrite powders, conductive carbon powders and organic high molecular weight compounds. The Mn-Zn ferrite powders may be contained in the range between 30 and 70 vol %. The composition has 102 to 10-1 ohm.cm of volume resistivity and exhibits excellent electromagnetic absorbing property. The electromagnetic shielding material can prevent transmission of electromagnetic waves and attenuate refleted waves by absorbing the waves.