ELECTROCONDUCTIVE AND MAGNETIC FILLER, RESIN COMPOSITION COMPRISING THE ELECTROCONDUCTIVE AND MAGNETIC FILLER, ELECTROMAGNETIC WAVE INTERFERENCE SUPPRESSION SHEET USING THE RESIN COMPOSITION, USE OF THE ELECTROMAGNETIC WAVE INTERFERENCE SUPPRESSION SHEET, AND PROCESS FOR PRODUCING THE ELECTROMAGNETIC WAVE INTERFERENCE SUPPR

摘要

This invention provides a soft magnetic powder material for electromagnetic wave interference suppression, which has the electromagnetic wave interference suppression in a wide frequency range from low frequency to high frequency, and an electromagnetic wave interference suppression sheet using the soft magnetic powder material for electromagnetic wave interference suppression. A high level of packing of an electroconductive and magnetic filler, prepared by mixing an electroconductive carbon and a soft magnetic powder together at a volume ratio of 3 to 10 : 50 to 70, into an electromagnetic wave interference suppression sheet can provide an electromagnetic wave interference suppression sheet that is suitable for high-density mounting of electronic equipment, has excellent electromagnetic wave absorption of a neighborhood electromagnetic field, and can satisfactorily suppress reflection.