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    AEROGEL FIBER HAVING SPECIFIC SECTION MORPHOLOGY FEATURE, AND PREPARATION METHOD AND DEVICE THEREFOR
    1.
    发明公开
    AEROGEL FIBER HAVING SPECIFIC SECTION MORPHOLOGY FEATURE, AND PREPARATION METHOD AND DEVICE THEREFOR 审中-公开

    公开(公告)号：EP4450687A1

    公开(公告)日：2024-10-23

    申请号：EP21967520.4

    申请日：2021-12-14

    申请人： Zhejiang University

    发明人： GAO, Chao ,  LI, Peng ,  LIU, Yingjun ,  XU, Zhen ,  WANG, Ziqiu

    IPC分类号： D01F9/12 ,  D01D13/00 ,  D01D5/06 ,  D01F9/08

    摘要： An aerogel fiber having specific cross-sectional morphological feature, and a preparation method and device therefor are provided. The arrangement of the cross-sectional two-dimensional nanosheets of the aerogel fiber can be regulated. The regulation method includes: adding a rotating flow field device during wet spinning before the spinning fluid is sprayed out, the rotating flow field causes the two-dimensional nanosheets to form a specific sheet-like arrangement in the cross-sectional direction of the gel fiber under the action of rotating shear, and preparing a graphene oxide aerogel fiber with specific morphological structure (concentric or spiral) from the gel fiber having specific cross-sectional morphological structure under freeze-drying conditions. Further, drying and densifying, stretching and reducing the hydrogel fiber with the concentric circle structure are performed to obtain a graphene fiber with high modulus and high thermal conductivity. Compared with the existing graphene fibers, the thermal conductivity and modulus are improved.

    ALUMINA FIBER AGGREGATE AND PRODUCTION METHOD THEREFOR
    4.
    发明公开
    ALUMINA FIBER AGGREGATE AND PRODUCTION METHOD THEREFOR 审中-公开

    公开(公告)号：EP3483320A1

    公开(公告)日：2019-05-15

    申请号：EP17827551.7

    申请日：2017-07-07

    申请人： Mitsubishi Chemical Corporation

    发明人： KIMURA, Yusuke

    IPC分类号： D04H1/4209 ,  D01F9/08

    摘要： An alumina fiber aggregate that is formed of alumina short fibers and has been subjected to needling treatment, wherein the alumina short fibers have an average fiber diameter of 6.0 µm or more and 10.0 µm or less and a specific surface area of 0.2 m 2 /g or more and 1.0 m 2 /g or less, and a residual percentage (%) of high-temperature-cycle opened gap pressure of the alumina fiber aggregate is 45% or more. A value obtained by subtracting twice the standard error of a length-weighted geometric mean diameter of fiber diameters of the alumina short fibers from the length-weighted geometric mean diameter is 6.0 µm or more. A proportion of alumina short fibers having a fiber diameter of more than 10.0 µm is preferably 5.0% or less on a number basis.

    METHOD FOR PRODUCING METAL NANOCOIL
    8.
    发明公开
    METHOD FOR PRODUCING METAL NANOCOIL 审中-公开
    生产金属纳米油的方法

    公开(公告)号：EP3257977A1

    公开(公告)日：2017-12-20

    申请号：EP16749233.9

    申请日：2016-02-09

    申请人： Mitsubishi Heavy Industries, Ltd. ,  Akita University ,  Tsuchiya Co., Ltd.

    发明人： MURAOKA, Mikio ,  KAMIHARA, Nobuyuki ,  ISHIKAWA, Naomoto ,  TAKAYANAGI, Toshiyuki ,  HORIZONO, Hideki ,  HAYASHI, Hiroaki ,  YOSHIDA, Osamu ,  TSUJI, Kotaro

    IPC分类号： D01F9/08 ,  B22F3/11 ,  H01B13/00 ,  H01F41/04 ,  B22F1/00

    摘要： Provided is a method for producing a metal nanocoil, which has excellent mass productivity and is capable of reducing the production cost. This method for producing a metal nanocoil comprises: a step wherein a metal thin film is formed on the surface of a core that is formed of a nanofiber of a polymer in a state where a tension is applied to the core, thereby producing a metal-coated nanofiber; a step wherein the tension applied to the metal-coated nanofiber is relaxed; and a step wherein the metal-coated nanofiber is heated to a temperature that is equal to or higher than the boiling point or the thermal decomposition temperature of the polymer and equal to or lower than the melting point of the metal thin film in a state where the tension is relaxed, so that the core is vaporized and the thin film is shrunk into a coil shape, thereby forming a hollow metal nanocoil.

    摘要翻译： 本发明提供一种批量生产性优异且能够降低制造成本的金属纳米线圈的制造方法。 该金属纳米线圈的制造方法包括：在对芯施加张力的状态下，在由聚合物的纳米纤维形成的芯的表面形成金属薄膜的工序， 涂层纳米纤维; 其中施加于金属涂覆的纳米纤维的张力被松弛的步骤; 以及将金属被覆纳米纤维加热到聚合物的沸点或热分解温度以上的温度且在金属薄膜的熔点以下的状态 松弛张力，使芯部气化并将薄膜收缩成线圈状，由此形成中空的金属纳米线圈。