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    CHALCOGENIDE-CARBON NANOFIBER AND PREPARATION METHOD THEREFOR
    1.
    发明申请
    CHALCOGENIDE-CARBON NANOFIBER AND PREPARATION METHOD THEREFOR 审中-公开

    公开(公告)号：US20180223455A1

    公开(公告)日：2018-08-09

    申请号：US15749691

    申请日：2016-07-29

    申请人： SEOUL NATIONAL UNIVERSITY R&DB FOUNDATION

    发明人： Young Chang JOO ,  Dae Hyun NAM

    IPC分类号： D01F11/06 ,  D01D5/00 ,  D01F9/10

    CPC分类号： D01F11/06 ,  D01D5/0038 ,  D01D5/0046 ,  D01F1/10 ,  D01F9/10 ,  D01F9/14 ,  D01F9/22 ,  D10B2101/10

    摘要： In order to provide a method for preparing a chalcogenide-carbon nanofiber, capable of implementing oxidation resistance characteristics and process simplification, the present invention provides a method for preparing a chalcogenide-carbon nanofiber and a chalcogenide-carbon nanofiber implemented by using the same, the method comprising the steps of: forming a chalcogenide precursor-organic nanofiber comprising a chalcogenide precursor and an organic material; and forming a chalcogenide-carbon nanofiber by selectively and oxidatively heat treating the chalcogenide precursor-organic nanofiber such that the carbon of the organic material is oxidized and the chalcogenide is reduced at the same time, wherein the oxidation reactivity of the chalcogenide is lower than that of carbon, the selective and oxidative heat treatment is carried out through one heat treatment step instead of a plurality of heat treatment steps, and the chalcogenide can form a chalcogenide-carbon nanofiber having a structure formed with at least one layer according to an oxygen partial pressure at which the selective and oxidative heat treatment is carried out.

    Method of synthesizing silica nanofibers using sound waves
    2.
    发明授权
    Method of synthesizing silica nanofibers using sound waves 有权

    公开(公告)号：US09732444B2

    公开(公告)日：2017-08-15

    申请号：US14819749

    申请日：2015-08-06

    申请人： UT-Battelle, LLC

    发明人： Jaswinder K. Sharma ,  Panos G. Datskos

    IPC分类号： D01F9/10 ,  B01J19/10 ,  C01B33/12 ,  C01B33/023

    CPC分类号： D01F9/10 ,  B01J19/10 ,  B01J2219/08 ,  B01J2219/0877 ,  C01B33/023 ,  C01B33/12 ,  D10B2101/02 ,  Y10T428/298

    摘要： A method for synthesizing silica nanofibers using sound waves is provided. The method includes providing a solution of polyvinyl pyrrolidone, adding sodium citrate and ammonium hydroxide to form a first mixture, adding a silica-based compound to the solution to form a second mixture, and sonicating the second mixture to synthesize a plurality of silica nanofibers having an average cross-sectional diameter of less than 70 nm and having a length on the order of at least several hundred microns. The method can be performed without heating or electrospinning, and instead includes less energy intensive strategies that can be scaled up to an industrial scale. The resulting nanofibers can achieve a decreased mean diameter over conventional fibers. The decreased diameter generally increases the tensile strength of the silica nanofibers, as defects and contaminations decrease with the decreasing diameter.

    Methods and apparatus for crosslinking a silicon carbide fiber precursor polymer
    6.
    发明授权
    Methods and apparatus for crosslinking a silicon carbide fiber precursor polymer 有权
    用于交联碳化硅纤维前体聚合物的方法和装置

    公开(公告)号：US09371423B2

    公开(公告)日：2016-06-21

    申请号：US13937298

    申请日：2013-07-09

    申请人： GENERAL ELECTRIC COMPANY

    发明人： Peter Kennedy Davis ,  Slawomir Rubinsztajn

    IPC分类号： C08G77/60 ,  C08G77/62 ,  B01J19/08 ,  B29C35/08 ,  C04B35/571 ,  C08J3/28 ,  C04B35/622

    CPC分类号： C08G77/62 ,  B01J19/085 ,  B01J19/087 ,  B01J2219/0803 ,  B01J2219/0879 ,  B29C35/0866 ,  B29C2035/0877 ,  C04B35/571 ,  C04B35/62281 ,  C08G77/60 ,  C08J3/28 ,  D01D10/00 ,  D01F9/10 ,  D01F11/08 ,  D01F11/16 ,  D06M10/008

    摘要： The present disclosure generally provides methods and apparatus for efficiently crosslinking silicon carbide fiber precursor polymers with electron beam radiation. The methods and apparatus utilize a platform containing silicon carbide fiber precursor polymer. The temperature of the platform is regulated while the silicon carbide fiber precursor polymer is irradiated to thereby regulate the temperature of the irradiated silicon carbide fiber precursor polymer thereon. In this way, the temperature of the irradiated silicon carbide fiber precursor polymer is regulated via the platform both during and after it is subjected to radiation. At least one of the platform and the e-beam radiation mechanism may be translated with respect to the other to irradiate different portions of the silicon carbide fiber precursor polymer and, ultimately, the entirety of the silicon carbide fiber precursor polymer contained on the platform.

    摘要翻译： 本发明通常提供了用电子束辐射有效交联碳化硅纤维前体聚合物的方法和装置。 该方法和装置利用含有碳化硅纤维前体聚合物的平台。 调节平台的温度，同时照射碳化硅纤维前体聚合物，从而调节照射的碳化硅纤维前体聚合物的温度。 以这种方式，照射的碳化硅纤维前体聚合物的温度在经受辐射之后和之后通过平台调节。 平台和电子束辐射机构中的至少一个可以相对于另一平台和电子束辐射机构平移以照射碳化硅纤维前体聚合物的不同部分，最终照射包含在平台上的整个碳化硅纤维前体聚合物。

    METHOD OF SYNTHESIZING SILICA NANOFIBERS USING SOUND WAVES
    8.
    发明申请
    METHOD OF SYNTHESIZING SILICA NANOFIBERS USING SOUND WAVES 有权

    公开(公告)号：US20150224468A1

    公开(公告)日：2015-08-13

    申请号：US14178648

    申请日：2014-02-12

    申请人： UT-Battelle, LLC

    发明人： Jaswinder K. Sharma ,  Panos G. Datskos

    IPC分类号： B01J19/10 ,  C01B33/023 ,  C01B33/12

    CPC分类号： D01F9/10 ,  B01J19/10 ,  B01J2219/08 ,  B01J2219/0877 ,  C01B33/023 ,  C01B33/12 ,  D10B2101/02 ,  Y10T428/298

    摘要： A method for synthesizing silica nanofibers using sound waves is provided. The method includes providing a solution of polyvinyl pyrrolidone, adding sodium citrate and ammonium hydroxide to form a first mixture, adding a silica-based compound to the solution to form a second mixture, and sonicating the second mixture to synthesize a plurality of silica nanofibers having an average cross-sectional diameter of less than 70 nm and having a length on the order of at least several hundred microns. The method can be performed without heating or electrospinning, and instead includes less energy intensive strategies that can be scaled up to an industrial scale. The resulting nanofibers can achieve a decreased mean diameter over conventional fibers. The decreased diameter generally increases the tensile strength of the silica nanofibers, as defects and contaminations decrease with the decreasing diameter.