公开(公告)号：EP4026942A1

公开(公告)日：2022-07-13

申请号：EP20859767.4

申请日：2020-08-31

申请人： HYOSUNG ADVANCED MATERIALS CORPORATION

发明人： JUNG, Hee Rok ,  KIM, Cheol

IPC分类号： D06M13/165 ,  D06M13/203 ,  D06B1/02 ,  D06B1/14 ,  D06B15/00 ,  D06M11/83 ,  D06M101/40

摘要： The present invention is a method for producing carbon fiber, characterized by using a carbon-fiber precursor produced from a polymer having a narrow molecular weight distribution and by applying only a small amount of a smoothing agent, composed of a specific component, to the carbon fiber surface immediately before winding of carbon fiber. According to the present invention, it is possible to stably produce carbon fiber, which has excellent dispersibility and do not deteriorate in quality and quality even when a sizing agent is not attached to the carbon fiber surface. In addition, the produced carbon fiber is suitable for use in a composite material which is produced by high-temperature processing using a thermoplastic resin.

公开(公告)号：EP4194594A1

公开(公告)日：2023-06-14

申请号：EP21852289.4

申请日：2021-07-27

申请人： HYOSUNG ADVANCED MATERIALS CORPORATION

发明人： JUNG, Hee Rok ,  LEE, Deuk-jin ,  KIM, Cheol

IPC分类号： D01F9/22 ,  D01F6/18 ,  D01D5/04 ,  D01D5/06 ,  D01D10/06 ,  B60K15/03 ,  F17C1/06

摘要： The present invention provides a carbon fiber, which has excellent tensile strength by having fewer internal defects while being a thick fiber having a single-fiber diameter of 6.0 µm or greater, and can provide the effects of reducing costs while increasing production amount to enhance the yieldability of the carbon fiber.