Carbon nanotube fiber and method for manufacturing the same
AssigneesHyundai Motor Company, Kia Corporation, Korea Institute of Science and Technology
InventorsGwan Sik KIM, Dong Gu KIM, Deok Woo YUN, Jang Hyeon LEE, Kyong Hwa SONG, Seok Min LEE, Seung Min KIM, Min Gook HAN, Hyeon Su JEONG
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Abstract
A carbon nanotube fiber is formed by aggregating carbon nanotube bundles. An axial direction of each of the carbon nanotube bundles of the formed carbon nanotube fiber forms an angle that is less than or equal to 10 degrees with respect to an axial direction of the carbon nanotube fiber. The carbon nanotube fiber has a cross-sectional aspect ratio of greater than or equal to 1.0 and less than or equal to 1.25.
Claims20
A carbon nanotube fiber having aggregated carbon nanotube bundles, the carbon nanotube fiber comprising:
- a plurality of carbon nanotube bundles,
- wherein an axial direction of each of the plurality of carbon nanotube bundles forms an angle that is less than or equal to 10 degrees with respect to an axial direction of the carbon nanotube fiber, and
- wherein the carbon nanotube fiber has a cross-sectional aspect ratio of greater than or equal to 1.0 and less than or equal to 1.25.
A method for producing a carbon nanotube fiber, the method comprising:
- producing a plurality of first carbon nanotube fibers with each carbon nanotube fiber having a minimum diameter that is greater than or equal to 50 μm and less than or equal to 400 μm;
- producing one or more second carbon nanotube fibers with each second carbon nanotube fiber having a minimum diameter that is greater than or equal to 200 μm and less than or equal to 1,000 μm, wherein producing the one or more second carbon nanotube fibers comprises plying the two or more of the plurality of first carbon nanotube fibers;
- and
- aggregating the one or more second carbon nanotube fibers.
A method for producing a carbon nanotube fiber, the method comprising:
- producing, based on plying a plurality of first carbon nanotube fibers, one or more second carbon nanotube fibers with each second carbon nanotube fiber having a minimum diameter that is greater than or equal to 200 μm and less than or equal to 1,000 μm, wherein each of the plurality of first carbon nanotube fibers has a minimum diameter that is greater than or equal to 50 μm and less than or equal to 400 μm;
- and
- aggregating the one or more second carbon nanotube fibers to thereby form the carbon nanotube fiber.
Dependencies are inferred from the claim text.