US 12,168,607 B2
Method for manufacturing carbon nanotube, method for manufacturing carbon nanotube assembled wire, method for manufacturing carbon nanotube assembled wire bundle, carbon nanotube manufacturing apparatus, carbon nanotube assembled wire manufacturing apparatus, and carbon nanotube assembled wire bundle manufacturing apparatus
Toshihiko Fujimori, Osaka (JP); Takeshi Hikata, Osaka (JP); Soichiro Okubo, Osaka (JP); Jun-Ichi Fujita, Tsukuba (JP); and Jun Otsuka, Osaka (JP)
Assigned to SUMITOMO ELECTRIC INDUSTRIES, LTD., Osaka (JP); and UNIVERSITY OF TSUKUBA, Tsukuba (JP)
Appl. No. 17/418,564
Filed by SUMITOMO ELECTRIC INDUSTRIES, LTD., Osaka (JP); and UNIVERSITY OF TSUKUBA, Tsukuba (JP)
PCT Filed Dec. 26, 2019, PCT No. PCT/JP2019/051332
§ 371(c)(1), (2) Date Jun. 25, 2021,
PCT Pub. No. WO2020/138378, PCT Pub. Date Jul. 2, 2020.
Claims priority of application No. 2018-245685 (JP), filed on Dec. 27, 2018; and application No. 2019-160765 (JP), filed on Sep. 3, 2019.
Prior Publication US 2022/0064003 A1, Mar. 3, 2022
Int. Cl. C01B 32/16 (2017.01); B01J 8/06 (2006.01); C01B 32/164 (2017.01); C01B 32/168 (2017.01); D01D 5/00 (2006.01); D01F 9/127 (2006.01); B82Y 40/00 (2011.01)
CPC C01B 32/164 (2017.08) [B01J 8/06 (2013.01); C01B 32/168 (2017.08); D01D 5/00 (2013.01); D01F 9/127 (2013.01); B82Y 40/00 (2013.01); C01B 2202/08 (2013.01)] 46 Claims
OG exemplary drawing
 
1. A method for manufacturing a carbon nanotube, the method comprising:
a growing step of growing a carbon nanotube from a catalyst particle by supplying a carbon-containing gas to the catalyst particle in a suspended state; and
a drawing step of drawing the carbon nanotube by applying a tensile force to the carbon nanotube in a suspended state,
wherein the tensile force is applied to the carbon nanotube by varying a flow velocity of the carbon-containing gas, and
wherein an average flow velocity of the carbon-containing gas at a downstream side is higher than an average flow velocity of the carbon-containing gas at an upstream side.