公开(公告)号：WO2022154208A1

公开(公告)日：2022-07-21

申请号：PCT/KR2021/010117

申请日：2021-08-03

Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY

Inventor： KU, Bon Cheol ,  HWANG, Jun Yeon ,  JEONG, Hyeon Su ,  YOU, Nam Ho ,  KIM, Nam Dong ,  KIM, Dae Yoon ,  LEE, Dong Ju ,  KIM, Seo Gyun ,  HONG, Seung Ki ,  RYU, Seung Woo

IPC: D01F9/12 ,  D01D5/04 ,  D01D5/06 ,  D01D10/02 ,  D01F1/10

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 ℃ 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.