Title:
PREPARATION METHOD FOR POLYACRYLONITRILE-BASED CARBON FIBER
Document Type and Number:
WIPO Patent Application WO/2022/165903
Kind Code:
A1
Abstract:
Disclosed is a preparation method for a polyacrylonitrile-based carbon fiber, belonging to the technical field of materials. The method comprises: S1, mixing acrylonitrile, a second monomer and an unsaturated ultraviolet light-sensitive cross-linking agent, adding an initiator and reacting same to obtain a meltable polyacrylonitrile-based copolymer; S2, mixing the meltable polyacrylonitrile-based copolymer with a flow modifier, subjecting the resulting mixture to extrusion and granulation and melt spinning, and stretching and annealing the nascent fibers to obtain a polyacrylonitrile-based carbon fiber precursor; S3, subjecting the polyacrylonitrile-based carbon fiber precursor to ultraviolet irradiation; and S4, pre-oxidizing and carbonizing the polyacrylonitrile-based carbon fiber precursor which has been subjected to ultraviolet irradiation so as to obtain a polyacrylonitrile-based carbon fiber.
Inventors:
HAN NA (CN)
WU CHAO (CN)
ZHANG XINGXIANG (CN)
WANG LEJUN (CN)
CHEN JIANYONG (CN)
SUN ZHIHENG (CN)
YANG XUJIAN (CN)
CAI JUN (CN)
WU CHAO (CN)
ZHANG XINGXIANG (CN)
WANG LEJUN (CN)
CHEN JIANYONG (CN)
SUN ZHIHENG (CN)
YANG XUJIAN (CN)
CAI JUN (CN)
Application Number:
PCT/CN2021/079360
Publication Date:
August 11, 2022
Filing Date:
March 05, 2021
Export Citation:
Assignee:
TIANGONG UNIV (CN)
HI TECH FIBER GROUP CORP (CN)
HI TECH FIBER GROUP CORP (CN)
International Classes:
D01F6/36; D01F6/38; D01F9/20; D01F9/22
Foreign References:
| CN108823683A | 2018-11-16 | |||
| US6083856A | 2000-07-04 | |||
| CN105199042A | 2015-12-30 | |||
| JP2020015997A | 2020-01-30 |
Attorney, Agent or Firm:
BEIJING RISINGMARK INTELLECTUAL PROPERTY AGENCY (CN)
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