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The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 11149361 B1

PDFFull Text
Date of Patent:
Oct. 19, 2021

Filed:

May. 10, 2021

Preparation methods of high modulus carbon fiber (hmcf) and precursor (mesophase pitch (mp)) thereof

Applicant:

China University of Petroleum, Qingdao, CN;

Inventors:

Dong Liu, Qingdao, CN;

Xin Gong, Qingdao, CN;

Bin Lou, Qingdao, CN;

Jun Li, Qingdao, CN;

Zhihao Li, Qingdao, CN;

Nan Shi, Qingdao, CN;

Fushan Wen, Qingdao, CN;

Hui Du, Qingdao, CN;

Zhaojun Chen, Qingdao, CN;

Changlong Yin, Qingdao, CN;

Xiujie Yang, Qingdao, CN;

Luning Chai, Qingdao, CN;

Zhichen Zhang, Qingdao, CN;

Enqiang Yu, Qingdao, CN;

Yu'e Fu, Qingdao, CN;

Huizhi Yuan, Qingdao, CN;

Jianguo Zhang, Qingdao, CN;

Zhiqing Ma, Qingdao, CN;

Chong Jiao, Qingdao, CN;

Yonggang Cao, Qingdao, CN;

Assignee:

CHINA UNIVERSITY OF PETROLEUM, Qingdao, CN;

Attorney:

Bayramoglu Law Offices LLC

Primary Examiner:

Benjamin L Lebron

Int. Cl.
CPC ...
B01D 15/34 (2006.01); B01D 15/36 (2006.01); B01J 20/26 (2006.01); B01J 20/28 (2006.01); D01F 9/15 (2006.01); D01F 9/155 (2006.01); C10C 3/08 (2006.01); B01D 15/18 (2006.01);
U.S. Cl.
CPC ...
D01F 9/155 (2013.01); B01D 15/1835 (2013.01); B01D 15/34 (2013.01); B01D 15/362 (2013.01); B01D 15/363 (2013.01); B01J 20/261 (2013.01); B01J 20/28047 (2013.01); B01J 20/28054 (2013.01); C10C 3/08 (2013.01); D01F 9/15 (2013.01); D10B 2101/12 (2013.01);
Abstract

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.

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