ELECTROMAGNETIC WAVE ABSORBING CARBON YARN AND ITS SHEET

PROBLEM TO BE SOLVED: To obtain a carbon yarn to be applied to an instrument side, to be laid between instruments and to be stuck to the surface of a material reflecting electromagnetic wave since the carbon yarn absorbs electromagnetic wave generated from electric instruments and electronic instrum...

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1. Verfasser:	UMEDA KATSUHIKO
Format:	Patent
Sprache:	eng
Schlagworte:	APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBONFILAMENTS CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS,THREADS, FIBRES, BRISTLES OR RIBBONS LOOMS METHODS OF WEAVING NATURAL OR ARTIFICIAL THREADS OR FIBRES SPINNING TEXTILES WEAVING WOVEN FABRICS
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To obtain a carbon yarn to be applied to an instrument side, to be laid between instruments and to be stuck to the surface of a material reflecting electromagnetic wave since the carbon yarn absorbs electromagnetic wave generated from electric instruments and electronic instruments and eliminates electromagnetic interference. SOLUTION: This electromagnetic wave absorbing yarn is obtained by sacrificing mechanical strength and rigidity and stopping a baking process in a stage not to advance graphitization. The electrical resistance value of graphite yarn has a low value of 1.9×10 Ω.cm. Even electromagnetic wave having a minute electric current value requires a high resistance value with respect to impedance matching so as to absorb the electromagnetic wave as energy. As the result of various adjustments of the baking process, finally a carbon yarn having 1.8Ω.cm, a resistance value of 1,000 times as much as that of ordinary carbon yarn (graphite yarn) is obtained.