US 12,480,231 B2
Manufacturing method for carbon fiber
Chia-Chun Hsieh, Kaohsiung (TW); Kun-Yeh Tsai, Kaohsiung (TW); Ching-Wen Chen, Kaohsiung (TW); Chia-Chi Hung, Kaohsiung (TW); Wen-Ju Chou, Kaohsiung (TW); and Long-Tyan Hwang, Kaohsiung (TW)
Assigned to FORMOSA PLASTICS CORPORATION, Kaohsiung (TW)
Filed by FORMOSA PLASTICS CORPORATION, Kaohsiung (TW)
Filed on Jul. 22, 2022, as Appl. No. 17/871,018.
Claims priority of application No. 110127260 (TW), filed on Jul. 23, 2021.
Prior Publication US 2023/0023765 A1, Jan. 26, 2023
Int. Cl. D01F 11/14 (2006.01); D01F 9/24 (2006.01)
CPC D01F 11/14 (2013.01) [D01F 9/24 (2013.01); D10B 2101/12 (2013.01)] 9 Claims
OG exemplary drawing
 
1. A manufacturing method for a carbon fiber, comprising: performing an emulsification step that comprises uniformly mixing a silicone oil composition and an emulsifier to form an oiling agent, wherein the silicone oil composition comprises γ-divinyltriamine propylmethyldimethoxyl silane and N-(β-aminoethyl)-γ-aminopropylmethylbimethoxy silane;
performing an oiling step that comprises soaking a carbon raw filament in the oiling agent, such that the oiling agent is adhered to a surface of the carbon raw filament to form a carbon fiber precursor;
performing a calcination step on the carbon fiber precursor, such that the carbon fiber is formed, and
carrying out a thermogravimetric analysis on the oiling agent in air, a weight of the oiling agent at a temperature of 273° C. to 277° C. is greater than 90% to 95% of an original weight of the oiling agent.