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    CARBONIZATION METHOD AND CARBON FIBER PRODUCTION METHOD
    1.
    发明申请
    CARBONIZATION METHOD AND CARBON FIBER PRODUCTION METHOD 有权
    碳化法和碳纤维生产方法

    公开(公告)号：US20160130732A1

    公开(公告)日：2016-05-12

    申请号：US14897924

    申请日：2014-07-24

    申请人： TOHO TENAX CO., LTD.

    发明人： Yoshinori SUZUKI

    IPC分类号： D01F9/22

    CPC分类号： D01F9/22 ,  C01B32/05 ,  C01B32/26 ,  D01F9/14 ,  D01F9/32 ,  D10B2101/12

    摘要： A carbonization method of carbonizing precursor fibers that are being conveyed includes carbonization performed using a plurality of carbonization furnaces for heating fibers arranged in the direction in which the fibers are conveyed. The plurality of carbonization furnaces include at least one carbonization furnace that heats the fibers using plasma when the fibers are passing through the inside of the at least one carbonization furnace. A carbon fiber production method includes a carbonization process of carbonizing precursor fibers that are being conveyed. The carbonization process is performed with the above carbonization method.

    摘要翻译： 正在输送的碳化前体纤维的碳化方法包括使用多个碳化炉进行碳化，所述碳化炉用于加热沿着纤维被输送的方向布置的纤维。 多个碳化炉包括至少一个碳化炉，其在纤维通过至少一个碳化炉的内部时使用等离子体加热纤维。 碳纤维的制造方法包括碳化前体纤维的碳化处理。 通过上述碳化法进行碳化处理。

    Prepreg and fiber-reinforced composite material
    3.
    发明授权
    Prepreg and fiber-reinforced composite material 有权

    公开(公告)号：US10544274B2

    公开(公告)日：2020-01-28

    申请号：US15329098

    申请日：2015-07-24

    申请人： Toho Tenax Co., Ltd.

    发明人： Kazuma Kurokawa ,  Hironori Kawamoto ,  Yoshitaka Umemoto ,  Akio Nakaishi

    IPC分类号： C08J5/24 ,  B32B5/26 ,  B32B27/12

    摘要： A prepreg includes conductive fibers impregnated with a matrix resin, the prepreg having a conductive region where a conductive material is dispersed in the resin. In the present invention, a resin layer composed of at least the matrix resin preferably is present on one or both surfaces of a conductive fiber layer composed of at least the conductive fibers, and the conductive region is present at least in the resin layer. In addition, the above-described conductive region preferably is present continuously in the thickness direction. The conductive region preferably is a conductive region where the conductive material is dispersed in the matrix resin, and the resin in the conductive region preferably forms a continuous phase with the matrix resin in other regions. A volume resistivity of the conductive region preferably is 1/1,000 or less of that of other regions of the matrix resin.

    Method for manufacturing carbon fibers and fiber joining method
    6.
    发明授权
    Method for manufacturing carbon fibers and fiber joining method 有权

    公开(公告)号：US10988862B2

    公开(公告)日：2021-04-27

    申请号：US16074685

    申请日：2017-01-31

    申请人： TOHO TENAX CO., LTD.

    发明人： Fumio Akiyama ,  Tadayuki Aoyama ,  Ichiro Kitano

    IPC分类号： D01F9/21 ,  D02J1/08 ,  D01F9/22 ,  D01F9/32 ,  B65H69/06 ,  D01D10/02

    摘要： A carbon fiber manufacturing method includes joining first and second target fiber bundles with a joining fiber bundle, and carbonizing the joined bundles by feeding them through one or more carbonization furnaces. The joining includes forming an overlap between a first end of the joining fiber bundle and a second end of the first target fiber bundle and jetting a fluid to the overlap to form a first entangled portion, and forming an overlap between a second end of the joining fiber bundle and a first end of the second target fiber bundle and jetting a fluid to the overlap to form a second entangled portion. When the first and second entangled portions each have two or more entangling points with a tensile strength not less than 400 N, the relationship defined by the inequality is satisfied: 40>{L2/(L2−A)}×(S+13), where L2 is a length (mm) of an elongation section inside a first carbonization furnace upstream in a feeding direction of the fiber bundles, A is a maximum distance (mm) between an entangling point in the first entangled portion and an entangling point in the second entangled portion, and S is an elongation (%) of the joined fiber bundles fed through the carbonization furnace.

    METHOD FOR MANUFACTURING CARBON FIBERS AND FIBER JOINING METHOD
    8.
    发明申请
    METHOD FOR MANUFACTURING CARBON FIBERS AND FIBER JOINING METHOD 审中-公开

    公开(公告)号：US20190040551A1

    公开(公告)日：2019-02-07

    申请号：US16074685

    申请日：2017-01-31

    申请人： TOHO TENAX CO., LTD.

    发明人： Fumio AKIYAMA ,  Tadayuki AOYAMA ,  Ichiro KITANO

    IPC分类号： D01F9/21 ,  D01D10/02

    摘要： A carbon fiber manufacturing method includes joining first and second target fiber bundles with a joining fiber bundle, and carbonizing the joined bundles by feeding them through one or more carbonization furnaces. The joining includes forming an overlap between a first end of the joining fiber bundle and a second end of the first target fiber bundle and jetting a fluid to the overlap to form a first entangled portion, and forming an overlap between a second end of the joining fiber bundle and a first end of the second target fiber bundle and jetting a fluid to the overlap to form a second entangled portion. When the first and second entangled portions each have two or more entangling points with a tensile strength not less than 400 N, the relationship defined by the inequality is satisfied: 40>{L2/(L2−A)}×(S+13), where L2 is a length (mm) of an elongation section inside a first carbonization furnace upstream in a feeding direction of the fiber bundles, A is a maximum distance (mm) between an entangling point in the first entangled portion and an entangling point in the second entangled portion, and S is an elongation (%) of the joined fiber bundles fed through the carbonization furnace.

    Carbonization method and carbon fiber production method
    10.
    发明授权
    Carbonization method and carbon fiber production method 有权

    公开(公告)号：US09745671B2

    公开(公告)日：2017-08-29

    申请号：US14897924

    申请日：2014-07-24

    申请人： TOHO TENAX CO., LTD.

    发明人： Yoshinori Suzuki

    IPC分类号： D01F9/22 ,  D01F9/14 ,  D01F9/32 ,  C01B31/02

    CPC分类号： D01F9/22 ,  C01B32/05 ,  C01B32/26 ,  D01F9/14 ,  D01F9/32 ,  D10B2101/12

    摘要： A carbonization method of carbonizing precursor fibers that are being conveyed includes carbonization performed using a plurality of carbonization furnaces for heating fibers arranged in the direction in which the fibers are conveyed. The plurality of carbonization furnaces include at least one carbonization furnace that heats the fibers using plasma when the fibers are passing through the inside of the at least one carbonization furnace. A carbon fiber production method includes a carbonization process of carbonizing precursor fibers that are being conveyed. The carbonization process is performed with the above carbonization method.