CARBON NANOTUBE FIBER HAVING IMPROVED PHYSICAL PROPERTIES AND METHOD FOR MANUFACTURING SAME
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United States of America Patent
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Issued Date -
Jul 21, 2022
app pub date -
Jul 28, 2021
filing date -
Jan 18, 2021
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Abstract
The present disclosure relates to a carbon nanotube fiber having improved physical properties and a method for manufacturing the same. The method according to the present disclosure comprises the steps of: spinning carbon nanotubes with a purity of 90% by weight or more to obtain a first carbon nanotube fiber; and heat-treating the first carbon nanotube fiber at 500 to 3,000° C. under an inert gas atmosphere to obtain a second carbon nanotube fiber, wherein the second carbon nanotube fiber has a density of 1.0 to 2.5 g/cm3.
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