CARBON NANOTUBE, CARBON NANOTUBE PRODUCTION METHOD, AND CARBON NANOTUBE PRODUCTION APPARATUS

PROBLEM TO BE SOLVED: To provide a carbon nanotube production method which enables the mass production of DWCNT at a high throughput and a low defective formation ratio. SOLUTION: A first electrode 2 having a hollow part 2a and a second rod electrode 3 are provided in a vacuum chamber 1. An inert ga...

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Bibliographic Details
Main Authors KAJIURA HISASHI, KO KOKIN, ATA MASAFUMI
Format Patent
LanguageEnglish
Published 10.02.2005
Edition7
Subjects
APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBONFILAMENTS
CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS,THREADS, FIBRES, BRISTLES OR RIBBONS
CHEMISTRY
COMPOUNDS THEREOF
INORGANIC CHEMISTRY
METALLURGY
NATURAL OR ARTIFICIAL THREADS OR FIBRES
NON-METALLIC ELEMENTS
SPINNING
TEXTILES
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Summary:PROBLEM TO BE SOLVED: To provide a carbon nanotube production method which enables the mass production of DWCNT at a high throughput and a low defective formation ratio. SOLUTION: A first electrode 2 having a hollow part 2a and a second rod electrode 3 are provided in a vacuum chamber 1. An inert gas such as a helium gas, a nitrogen gas, or an argon gas is fed into the vacuum chamber 1 to form an atmosphere free from hydrogen and an oxygen gas therein. In this state, an arc discharge is generated between the first electrode 2 and the second electrode 3. The heat generated by the arc discharge suitably stays on the inside surface enclosed by the first electrode 2 to keep the surface temperature of the first electrode 2 at a temperature favorable for the formation of DWCNT 8. Thus, a filamentous DWCNT 8, which starts from a catalyst 6, can be continuously formed without being broken. COPYRIGHT: (C)2005,JPO&NCIPI
Bibliography:Application Number: JP20030197339