Title :
Incombustible electromagnetic wave absorber made of nonwoven ceramic fibers
Author :
Hatakeyama, Kennichi ; Togawa, Hitoshi
Author_Institution :
Dept. of Technol. Dev., NEC Corp., Tokyo, Japan
fDate :
2/1/1998 12:00:00 AM
Abstract :
Incombustible electromagnetic wave absorbing material made of incombustible ceramic fibers are proposed in this paper. The hollow-type pyramids were experimentally fabricated by means of a nonwoven fabric production process and their flammability and electromagnetic wave absorption were investigated. By the tests using high-power microwaves and gas burner flames, it was confirmed that the material shows extremely good flame retardance. Also, it was confirmed that pyramids made of this material had good electromagnetic wave absorption characteristics. The pyramids made of this material are able to be used as absorbers for anechoic rooms instead of conventional plastic pyramids such as urethane foam or polystyrene pyramids, which are combustible
Keywords :
UHF radio propagation; anechoic chambers; ceramics; combustion; electromagnetic shielding; electromagnetic wave absorption; materials testing; microwave propagation; 2 to 20 GHz; anechoic rooms; electromagnetic wave absorption; flame retardance; flammability; gas burner flames; high-power microwaves; hollow-type pyramids; incombustible electromagnetic wave absorber; nonwoven ceramic fibers; nonwoven fabric production process; Ceramics; Electromagnetic scattering; Electromagnetic wave absorption; Fabrics; Fires; Flammability; Materials testing; Optical fiber testing; Plastics; Production;
Journal_Title :
Electromagnetic Compatibility, IEEE Transactions on
