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Preparation methods of high modulus carbon fiber (HMCF) and precursor (mesophase pitch (MP)) thereof
Preparation methods of a high modulus carbon fiber (HMCF) and a precursor (mesophase pitch (MP)) thereof are provided. The preparation method of MP includes: separating components with a molecular weight distribution (MWD) of 400 to 1,000 from a heavy oil raw material through size-exclusion chromatography (SEC); subjecting the components to ion-exchange chromatography (IEC) to obtain modified feedstock oil, where, the components are passed through macroporous cation-exchange and anion-exchange resins in sequence to remove acidic and alkaline components; and subjecting the modified feedstock oil to thermal polycondensation and carbonization to obtain high-quality MP with prominent spinnability. With high mesophase content, low softening point, low viscosity, and prominent meltability and spinnability, the obtained MP is a high-quality raw material for preparing HMCFs. The obtained MP can be subjected to melt spinning, pre-oxidation, carbonization, and graphitization to obtain an MP-based HMCF.
CHINA UNIVERSITY OF PETROLEUM
B B B D C C B D B C C B D C
B01D B01D B01J D10B C10B C10B B01J D01F B01D C10G C10C B01J D01F C10C
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Huizhi Zhaojun Nan Chong Zhichen Changlong Luning Yu'e Hui Zhihao Zhiqing Enqiang Fushan Xin Jianguo Jun Dong Bin Xiujie Yonggang
Yuan Chen Shi Jiao Zhang Yin Chai Fu Du Li Ma Yu Wen Gong Zhang Li Liu Lou Yang Cao