Method for preparing carbon nanotube fiber having enhanced tensile strength
AssigneeLG Chem, Ltd.
InventorsEugene Oh, Youngjin Yi, Juhan Kim, Ji Eun Kim, Jun Won Choi, Won Jae Lee, Ye Hoon Im
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Abstract
The present invention relates to a method for preparing a carbon nanotube fiber which is a continuous array of carbon nanotube. The present invention enables minimization of rotational flow inside a tube reactor and thus can facilitate enhanced tensile strength of the prepared carbon nanotube fiber.
Claims11
A method for manufacturing carbon nanotube fiber that is a continuous aggregate of carbon nanotubes, by feeding a reaction gas containing a carbon source into a reactor tube equipped with a heating furnace together with a catalyst or a catalyst precursor and a transfer gas, comprising:
- suppressing rotational flow within the reactor by providing a Gr/Re2 value, calculated from Grashof number Gr and Reynolds number Re in an area between an inlet of the reactor tube and an inlet of the heating furnace, of 0.12 or less.
Dependencies are inferred from the claim text.