Electromagnetic wave absorbing material

Details Electromagnetic wave absorbing material Electromagnetic wave absorbing material

C - Chemistry, Metallurgy

08

K

31/203

C08K 7/10 (2006.01) C04B 35/622 (2006.01) C04B 35/80 (2006.01) C04B 35/82 (2006.01) H01Q 17/00 (2006.01) H05K 9/00 (2006.01)

Patent

CA 1330704

ABSTRACT OF THE DISCLOSURE Disclosed is an electromagnetic wave absorbing structure comprising: [A] a composite of a plurality of laminated layers of an electromagnetic wave absorbing material comprising a fiber having a specific resistance of 10-2 to 102 .OMEGA..cm and a matrix, wherein the fiber is composed of an inorganic substance selected from the group consisting of: i) an amorphous substance substantially composed of Si, M, C and O, ii) crystalline ultrafine particles substantially composed of .beta.-SiC, C, MC, a solid solution of .beta.-SiC and MC and/or MC1-x, and having a particle diameter of not more than 500 .ANG., or alternatively, an aggregate of the crystalline ultrafine particles, amorphous SiO2 and amorphous MO2, and iii) a mixture of the above amorphous substance i) with the above crystalline ultrafine particles or aggregate ii) in which M denotes Ti or Zr, and x is a member more than 0 but less than 1, and [B] an electromagnetic wave transmitting material laminated on a surface of the composite [A].

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