Incombustible electromagnetic wave absorber made of nonwoven ceramic fibers

Author

Hatakeyama, Kennichi ; Togawa, Hitoshi

Author_Institution

Dept. of Technol. Dev., NEC Corp., Tokyo, Japan

Volume

40

Issue

1

fYear

1998

fDate

2/1/1998 12:00:00 AM

Firstpage

27

Lastpage

32

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;

fLanguage

English

Journal_Title

Electromagnetic Compatibility, IEEE Transactions on

Publisher

ieee

ISSN

0018-9375

Type

jour

DOI

10.1109/15.659517

Filename

659517