Broadband electromagnetic wave-absorber and process for producing same,申请号US200913063788-传众专利搜索

Broadband electromagnetic wave-absorber and process for producing same

申请公布号：US9108388(B2)

申请号：US200913063788

申请日期：2009.12.28

申请公布日期：2015.08.18

申请人：

TAYCA CORPORATION

发明人：Egami Yoshihiro;Suzuki Kunio;Tsuduki Takao

分类号：H01Q17/00;G01S7/03;B32B5/26;B32B5/08;B32B7/12;B32B9/00;B32B15/20;B32B27/02;B32B27/36;D06M15/356;H05K9/00;G01S13/88

主分类号：H01Q17/00

代理机构：

Millen, White, Zelano & Branigan, P.C.

代理人：Millen, White, Zelano & Branigan, P.C.

地址：Osaka JP

摘要：Disclosed is an electromagnetic wave absorbent which exhibits high electromagnetic wave absorption performance over a wide band. The electromagnetic wave absorbent contains a conductive fiber sheet which is obtained by coating a fiber sheet base with a conductive polymer and has a surface resistivity within a specific range. The conductive fiber sheet is formed by impregnating a fiber sheet base such as a nonwoven fabric with an aqueous oxidant solution that contains a dopant, and then bringing the resulting fiber sheet base into contact with a gaseous monomer for a conductive polymer, so that the monomer is oxidatively polymerized thereon.

主权项：1. An electromagnetic wave absorber comprising a plurality of electroconductive fabric sheets laminated together, said plurality of electroconductive fabric sheets each having an electroconductive polymer coating on a fibrous substrate sheet, and a surface resistivity between 1×100 Ohm/square and 1×104 Ohm/square, wherein said plurality of electroconductive fabric sheets exerts wave attenuation higher than 10 dB at least in a whole part in a frequency range between 35 GHz and 110 GHz.