Document Type and Number:
Japanese Patent JPS5418755
Kind Code:
B2
Abstract:
An electromagnetic wave absorbing material comprising as a conductive material hollow carbon microspheres which are prepared by the use of a coal-base or petroleum-base pitch material and which have a non-cohesive property with one another, and as a matrix a non-conductive material having a specific resistance of greater than 103 OMEGA cm, the conductive material being mixed with the non-conductive material and the mixture being formed into moldings. The resultant composite moldings exhibit a satisfactory complex dielectric constant, so that the composite material is applicable, for example, as a waveguide microwave absorber, a microwave pollution preventive microwave absorber, a microwave absorber for microwave heating range, or a microwave absorber for an antenna.
Application Number:
JP2610473A
Publication Date:
July 10, 1979
Filing Date:
March 07, 1973
Export Citation:
International Classes:
H05K9/00; H01B3/00; H01P1/26; H01Q17/00