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US 11,897,770 B2Granted
Method for producing densified carbon nanotube fiber
AssigneeKorea Institute of Science and Technology
InventorsHyeon Su Jeong, Seung Min Kim, Sook Young Moon, Dong Myeong Lee
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Abstract
Disclosed is a method for mass-producing densified carbon nanotube fiber. The method includes preparing carbon nanotube fiber, swelling the carbon nanotube fiber by applying an acid solution thereto, and stretching the carbon nanotube fiber, coagulating the stretched carbon nanotube fiber so as to remove the acid solution present therein, and drying the coagulated carbon nanotube fiber.
Claims9
A method for producing densified carbon nanotube fiber, the method comprising:
- preparing carbon nanotube fiber;
- swelling the carbon nanotube fiber by applying an acid solution thereto, and stretching the carbon nanotube fiber;
- coagulating the stretched carbon nanotube fiber so as to remove the acid solution present therein;
- and
- drying the coagulated carbon nanotube fiber;
- wherein in the preparing the carbon nanotube fiber, carbon nanotube fiber having a linear density equal to or greater than 5 tex is prepared, and
- in the swelling and stretching the carbon nanotube fiber, the carbon nanotube fiber is stretched to a stretching ratio greater than 80% but less than or equal to 200%.
4 more elements
Dependencies are inferred from the claim text.