Electromagnetic shielding material

Details Electromagnetic shielding material Electromagnetic shielding material

1985-05-20

1987-09-01

Kittle, John E.

Compositions

Electrically conductive or emissive compositions

Elemental carbon containing

252511, 523137, 524435, 524495, 428447, H01B 106

Patent

active

046907785

ABSTRACT:
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 10.sup.2 to 10.sup.-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.

REFERENCES:
patent: 4104600 (1978-08-01), Mayer
patent: 4179388 (1979-12-01), Rahn et al.
patent: 4555422 (1985-11-01), Nakamura et al.

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