公开(公告)号：US20200258653A1

公开(公告)日：2020-08-13

申请号：US16859069

申请日：2020-04-27

Applicant: FURUKAWA ELECTRIC CO., LTD.

Inventor： Hideki AIZAWA ,  Satoshi YAMAZAKI ,  Satoshi YAMASHITA ,  Kenji HATAMOTO

IPC: H01B7/00 ,  H01B7/42

Abstract: The present disclosure provides a coated carbon nanotube electric wire that has excellent electroconductivity comparable to electric wires made of copper, aluminum, and the like, achieves marked weight reduction and heat dissipation characteristics, and excels in adhesiveness between an insulating coating and core wire. A coated carbon nanotube electric wire includes a carbon nanotube wire made up of one or more carbon nanotube aggregates formed by a plurality of carbon nanotubes, and an insulating coating layer configured to coat the carbon nanotube wire, in which arithmetic mean roughness (Ra1) of an outer surface of the carbon nanotube wire in a circumferential direction is larger than arithmetic mean roughness (Ra2) of an outer surface of the insulating coating layer in the circumferential direction.

公开(公告)号：US20200258648A1

公开(公告)日：2020-08-13

申请号：US16857729

申请日：2020-04-24

Applicant: Furukawa Electric Co., Ltd.

Inventor： Satoshi YAMAZAKI ,  Satoshi YAMASHITA ,  Kenji HATAMOTO ,  Hideki AIZAWA

IPC: H01B1/04 ,  C01B32/168 ,  H01B7/00

Abstract: The present disclosure relates to a carbon nanotube strand wire capable of realizing electroconductivity that is equivalent to electroconductivity of a wire configured of a core wire made mainly of metal such as copper or aluminum, realizing excellent handling ability, and additionally realizing further weight reduction. A CNT strand wire is obtained by twisting a plurality of CNT wires of a plurality of bundled CNT aggregates configured of a plurality of CNTs together. At least one of a number of twists t1 of the CNT wires and a number of twists t2 of the CNT strand wire is equal to or greater than 2500 T/m, or the number of twists t1 of the CNT wires is equal to or greater than 1000 T/m and less than 2500 T/m while the number of twists t2 of the CNT strand wire is equal to or greater than 500 T/m and less than 2500 T/m, or the number of twists t1 of the CNT wires is equal to or greater than 500 T/m and less than 1000 T/m while the number of twists t2 of the CNT strand wire is equal to or greater than 1000 T/m and less than 2500 T/m.

公开(公告)号：US20200251247A1

公开(公告)日：2020-08-06

申请号：US16857873

申请日：2020-04-24

Applicant: FURUKAWA ELECTRIC CO., LTD.

Inventor： Hideki AIZAWA ,  Satoshi YAMAZAKI ,  Satoshi YAMASHITA ,  Kenji HATAMOTO

IPC: H01B7/08 ,  C01B32/168 ,  H01B7/42 ,  H01B1/04 ,  H01B5/08

Abstract: The present disclosure relates to a coated carbon nanotube electric wire includes: a carbon nanotube wire including one or more carbon nanotube aggregates configured of a plurality of carbon nanotubes; and an insulating coating layer with which the carbon nanotube wire is coated, in which a proportion of a Young's modulus of a material configuring the insulating coating layer with respect to a Young's modulus of the carbon nanotube wire is equal to or greater than 0.0001 and equal to or less than 0.01.

公开(公告)号：US20200258652A1

公开(公告)日：2020-08-13

申请号：US16858351

申请日：2020-04-24

Applicant: FURUKAWA ELECTRIC CO., LTD.

Inventor： Satoshi YAMAZAKI ,  Satoshi YAMASHITA ,  Kenji HATAMOTO ,  Hideki AIZAWA

IPC: H01B5/10 ,  C01B32/168 ,  H01B1/04 ,  H01B7/08 ,  H01B7/00

Abstract: The present disclosure relates to a carbon nanotube strand wire obtained by twisting a plurality of CNT wires of a plurality of bundled CNT aggregates configured of a plurality of CNTs together. A number of twists t1 of the CNT wires is equal to or greater than 0 and less than 2500 T/m, and a number of twists t2 of the CNT strand wire is greater than 0 and less than 2500 T/m.

公开(公告)号：US20200251240A1

公开(公告)日：2020-08-06

申请号：US16857675

申请日：2020-04-24

Applicant: FURUKAWA ELECTRIC CO., LTD.

Inventor： Satoshi YAMAZAKI ,  Satoshi YAMASHITA ,  Kenji HATAMOTO ,  Hideki AIZAWA

IPC: H01B1/04 ,  H01B13/00 ,  H01B7/00

Abstract: The present disclosure relates to a carbon nanotube strand wire capable of realizing further weight reduction as compared with a wire configured of a core wire made mainly of metal such as copper or aluminum and achieving both satisfactory durability in bending and handling ability. A CNT strand wire is obtained by twisting a plurality of CNT wires of a plurality of bundled CNT aggregates configured of a plurality of CNTs together. At least a number of twists t1 of the CNT wires and a number of twists t2 of the CNT strand wire is equal to or greater than 1000 T/m.

公开(公告)号：US20200251239A1

公开(公告)日：2020-08-06

申请号：US16857441

申请日：2020-04-24

Applicant: FURUKAWA ELECTRIC CO., LTD.

Inventor： Hideki AIZAWA ,  Satoshi YAMAZAKI ,  Satoshi YAMASHITA ,  Kenji HATAMOTO

IPC: H01B1/04 ,  C01B32/168

Abstract: The present disclosure relates to a coated carbon nanotube electric wire includes: a carbon nanotube wire including one or more carbon nanotube aggregates configured of a plurality of carbon nanotubes; and an insulating coating layer with which the carbon nanotube wire is coated, and the insulating coating layer is configured of a material with a refractive index nD of equal to or greater than 1.45.

公开(公告)号：US20200251238A1

公开(公告)日：2020-08-06

申请号：US16857425

申请日：2020-04-24

Applicant: FURUKAWA ELECTRIC CO., LTD.

Inventor： Hideki AIZAWA ,  Satoshi YAMAZAKI ,  Satoshi YAMASHITA ,  Kenji HATAMOTO

IPC: H01B1/04 ,  C01B32/168 ,  H01B13/00 ,  G01R31/60

Abstract: Provided is a coated carbon nanotube electric wire superior in identifiability. The coated carbon nanotube electric wire includes: a carbon nanotube wire including one or a plurality of carbon nanotube aggregates formed by a plurality of carbon nanotubes; and an insulating coating layer coating the carbon nanotube wire, wherein the insulating coating layer has an identification mark.

公开(公告)号：US20190355490A1

公开(公告)日：2019-11-21

申请号：US16528403

申请日：2019-07-31

Applicant: FURUKAWA ELECTRIC CO., LTD.

Inventor： Satoshi YAMAZAKI ,  Yoshinori KAZAMA ,  Satoshi YAMASHITA ,  Koji FUJIMURA ,  Yuudai TANIMURA ,  Yukako NAKAI ,  Kazutomi MIYOSHI ,  Hideki AIZAWA ,  Kenji HATAMOTO

IPC: H01B1/04 ,  D01F9/12 ,  C01B32/168

Abstract: There is provided a CNTs wire capable of materializing a low resistivity and improving the electroconductivity. The CNT wire is formed from a single CNT aggregate constituted of a plurality of CNTs . . . having a single- or multi-walled structure, or formed by bundling a plurality of the CNT aggregates. The proportion of the total number of the CNTs having a double-walled or triple-walled structure based on the number of the plurality of CNTs constituting the CNT wire is 75% or higher; the proportion of the total number of the CNTs having an average diameter of the innermost wall of 1.7 nm or smaller based on the number of the CNTs constituting the CNT wire is 75% or higher; and the full-width at half maximum Δθ in azimuth angle in azimuth intensity distribution by SAXS indicating orientation of the plurality of CNT aggregates is 60° or smaller.

公开(公告)号：US20180170757A1

公开(公告)日：2018-06-21

申请号：US15895941

申请日：2018-02-13

Applicant: Furukawa Electric Co., Ltd.

Inventor： Masashige WATANABE ,  Hideki AIZAWA ,  Kazutomi MIYOSHI ,  Satoshi YAMASHITA ,  Yoshinori KAZAMA ,  Yuudai TANIMURA ,  Koji FUJIMURA ,  Morinobu ENDO ,  Kenji TAKEUCHI ,  Masatsugu FUJISHIGE

IPC: C01B32/16 ,  H01L51/00 ,  B82Y40/00 ,  B82Y30/00

CPC classification number: C01B32/16 ,  B82Y30/00 ,  B82Y40/00 ,  C01B32/158 ,  C01B32/168 ,  C01B2202/06 ,  C01B2202/22 ,  C01B2202/34 ,  C01B2202/36 ,  H01B1/04 ,  H01L51/002 ,  H01L51/0048

Abstract: A low-resistivity carbon nanotube aggregate includes a plurality of carbon nanotubes each having one or more walls, wherein a ratio of a total number of carbon nanotubes that have two or three walls relative to a total number of said plurality of carbon nanotubes is 75% or greater, and wherein, in a G band of a Raman spectrum in the Raman spectroscopy of the plurality of carbon nanotubes, a G+/Gtotal ratio that is indicative of an amount of semiconductor carbon nanotubes relative to metallic carbon nanotubes is 0.70 or greater.

公开(公告)号：US20220021257A1

公开(公告)日：2022-01-20

申请号：US17488165

申请日：2021-09-28

Applicant: Furukawa Electric Co., Ltd.

Inventor： Hideki AIZAWA ,  Satoshi YAMASHITA ,  Kazutomi MIYOSHI

IPC: H02K3/02 ,  H02K3/47

Abstract: A coreless motor includes a rotating shaft, a rotor plate attached to the rotating shaft, and a coil supported by the rotor plate. The coil includes a carbon nanotube electric wire, the carbon nanotube electric wire including a carbon nanotube wire and a coating layer, the carbon nanotube wire including a plurality of carbon nanotubes, the coating layer including an insulating layer that covers the carbon nanotube wire so as to insulate the carbon nanotube wire.