Patents by Inventor Luning CHAI

Luning CHAI has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Preparation method for yttrium aluminum garnet continuous fiber
    Patent number: 11572314
    Abstract: A preparation method for an yttrium aluminum garnet continuous fiber. The method prepares a spinnable precursor sol by utilizing an Al13 colloidal particles contained alumina sol, ?-AlOOH nano-dispersion, yttria sol, glacial acetic acid and polyvinylpyrrolidone, then prepares a gel continuous fiber by adopting a dry spinning technique, and carries out a heat treatment to obtain the yttrium aluminum garnet continuous fiber.
    Type: Grant
    Filed: September 29, 2017
    Date of Patent: February 7, 2023
    Assignee: SHANDONG UNIVERSITY
    Inventors: Dairong Chen, Qiang Meng, Yuna Jia, Xiuling Jiao, Chao Zhu, Luning Chai
  • Preparation methods of high modulus carbon fiber (HMCF) and precursor (mesophase pitch (MP)) thereof
    Patent number: 11149361
    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.
    Type: Grant
    Filed: May 10, 2021
    Date of Patent: October 19, 2021
    Assignee: CHINA UNIVERSITY OF PETROLEUM
    Inventors: Dong Liu, Xin Gong, Bin Lou, Jun Li, Zhihao Li, Nan Shi, Fushan Wen, Hui Du, Zhaojun Chen, Changlong Yin, Xiujie Yang, Luning Chai, Zhichen Zhang, Enqiang Yu, Yu'e Fu, Huizhi Yuan, Jianguo Zhang, Zhiqing Ma, Chong Jiao, Yonggang Cao
  • PREPARATION METHOD FOR YTTRIUM ALUMINUM GARNET CONTINUOUS FIBER
    Publication number: 20200071231
    Abstract: A preparation method for an yttrium aluminum garnet continuous fiber. The method prepares a spinnable precursor sol by utilizing an Al13 colloidal particles contained alumina sol, ?-AIOOH nano-dispersion, yttria sol, glacial acetic acid and polyvinylpyrrolidone, then prepares a gel continuous fiber by adopting a dry spinning technique, and carries out a heat treatment to obtain the yttrium aluminum garnet continuous fiber.
    Type: Application
    Filed: September 29, 2017
    Publication date: March 5, 2020
    Inventors: Dairong CHEN, Qiang MENG, Yuna JIA, Xiuling JIAO, Chao ZHU, Luning CHAI