To provide a light radio wave absorber which is superior in processability, and has highly efficient radio wave absorbing property without dispersion in a frequency band of 1 to 10 GHz.
The radio wave absorber in the frequency band of 1 to 10 GHz is formed of thermoplastics foam containing a carbon nanotube. The carbon nanotube is contained at a proportion of six to 20 parts by weight to 100 parts by weight of thermoplastics constituting the foam. Relative magnification of the thermoplastics foam is 3 to 15 times. A real part (εr') of complex specific inductive capacity measured by a coaxial tube method is in a range of 6.0 to 20.0, an imaginary part (εr") is 1.0 to 9.0, and dielectric dissipation factor (Tanδ=εr"/εr') is 0.14 to 0.60.
COPYRIGHT: (C)2008,JPO&INPIT
| WO/2011/077676 | WIRING COMPONENT |
| JP2003236996 | CONDUCTIVE SHEET AND ELECTROMAGNETIC WAVE SHIELDING MATERIAL COMPRISING THE SAME |
HANDA KOICHI
SUBIANTORO
OKUBO TAKESHI
BUSSAN NANOTECH RES INST INC
| JP2005150461A | 2005-06-09 | |||
| JP2004153016A | 2004-05-27 |
Shinji Nakagawa
Teruhisa Matoba
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