公开(公告)号：US20160163420A1

公开(公告)日：2016-06-09

申请号：US14905189

申请日：2013-07-22

Applicant: HITACHI, LTD.

Inventor： Koutarou ARAYA ,  Satoru AMOU ,  Shintarou TAKEDA ,  Toshiyuki KOBAYASHI ,  Tadashi ARAI

IPC: H01B7/29 ,  H01B3/30 ,  H01B7/02

CPC classification number: H01B7/292 ,  H01B3/308 ,  H01B3/427 ,  H01B7/0216 ,  H01B13/14

Abstract: An insulated wire producible at low cost and excellent in heat resistance and voltage resistance and a dynamo-electric machine using the insulated wire are provided. The insulated wire includes a conductor and a resin laminated body covering the conductor and formed by a plurality of resin layers being stacked, wherein the resin layer of an outermost layer in the resin laminated body is formed from a resin having maximum heat resistance among resins forming the plurality of resin layers.

Abstract translation: 提供了一种低成本且耐热和耐电压优异的绝缘线以及使用该绝缘线的发电机。 绝缘线包括导体和树脂层叠体，覆盖导体并且由堆叠的多个树脂层形成，其中树脂层叠体中最外层的树脂层由形成树脂的树脂中具有最大耐热性的树脂形成 多个树脂层。

公开(公告)号：US20180009955A1

公开(公告)日：2018-01-11

申请号：US15544149

申请日：2016-01-12

Applicant: HITACHI, LTD.

Inventor： Yuri KAJIHARA ,  Takahito MURAKI ,  Tadashi ARAI ,  Yasuhiko TADA

IPC: C08G81/02 ,  H01F27/32 ,  H01B7/02 ,  C08F220/32 ,  C08F212/08 ,  C09D187/00 ,  C08F220/28 ,  H02K3/30 ,  H01B3/44

CPC classification number: C08G81/027 ,  C08F212/08 ,  C08F220/28 ,  C08F220/32 ,  C08F2220/281 ,  C08F2220/325 ,  C08G59/00 ,  C09D125/14 ,  C09D187/005 ,  H01B3/44 ,  H01B7/02 ,  H01F27/022 ,  H01F27/324 ,  H01L23/293 ,  H01L23/31 ,  H01L2224/32245 ,  H01L2224/48091 ,  H01L2224/48247 ,  H01L2224/73265 ,  H01L2924/1815 ,  H02K3/30 ,  H01L2924/00012 ,  H01L2924/00014

Abstract: A resin produced by a conventional technique has a weak nature in terms of hydrolysis resistance. For example, in a case where the resin produced by a conventional technique is used in an area with a highly humid climate such as Japan for a long period of time, deterioration of the resin due to hydrolysis becomes a concern. A resin composition is described that is optimized in the molecular structure design of the resin and in the catalyst in order to improve the hydrolysis resistance. Specifically, the resin composition contains (1) a copolymer of a vinyl compound having two or more epoxy groups, a carboxylic acid anhydride, and a transesterification reaction catalyst, or (2) a copolymer of a vinyl compound having two or more carboxylic acid anhydride groups, an epoxy, and a transesterification reaction catalyst.

公开(公告)号：US20170092397A1

公开(公告)日：2017-03-30

申请号：US15310802

申请日：2015-06-17

Applicant: HITACHI, LTD.

Inventor： Masahiro KAWASAKI ,  Kenji OKISHIRO ,  Tadashi ARAI ,  Akihisa MIYAZOE

IPC: H01F6/06 ,  G01R33/3815 ,  G01R33/38 ,  H01F41/04

Abstract: An object is to provide a super-conducting coil and a magnetic resonance imaging device that are quench-free by reducing Joule heat generated upon occurrence of separation of members even in a high magnetic field. The super-conducting coil in accordance with the present invention includes a spool and a super-conducting wire wound around the spool. The coil further includes, between the spool and the super-conducting wire, a first resin layer containing thermoplastic resin, a second resin layer containing thermosetting resin, and a mixed layer, the mixed layer being positioned between the first resin layer and the second resin layer and containing a mixture of the thermoplastic resin and the thermosetting resin.

公开(公告)号：US20160042836A1

公开(公告)日：2016-02-11

申请号：US14813367

申请日：2015-07-30

Applicant: Hitachi, Ltd.

Inventor： Yoshiaki OKABE ,  Kotaro ARAYA ,  Takahito MURAKI ,  Satoru AMOU ,  Tadashi ARAI

IPC: H01B7/29 ,  H01B13/14 ,  H01B3/04 ,  H01B3/40 ,  H01B3/28

CPC classification number: H01B7/292 ,  H01B3/04 ,  H01B3/28 ,  H01B3/40 ,  H01B13/143 ,  H01B13/145

Abstract: Provided are an insulated wire which is excellent in heat resistance and pressure resistance, and a rotary electric machine which uses the same. An insulated wire includes an insulating resin layer that is formed on an outer periphery of a conductor, in which the insulating resin layer has a thermoplastic phenoxy resin, an epoxy resin, a cross-linking agent, an inorganic filler, and fine rubber particles.

Abstract translation: 提供耐热性和耐压性优异的绝缘线，以及使用该绝缘线的旋转电机。 绝缘线包括绝缘树脂层，其形成在导体的外周上，其中绝缘树脂层具有热塑性苯氧树脂，环氧树脂，交联剂，无机填料和细橡胶颗粒。

公开(公告)号：US20180215129A1

公开(公告)日：2018-08-02

申请号：US15748533

申请日：2015-07-31

Applicant: HITACHI, LTD.

Inventor： Yasuhiko TADA ,  Takahito MURAKI ,  Yuri KAJIHARA ,  Takeshi KONDO ,  Tadashi ARAI

IPC: B32B27/08 ,  H01B3/40 ,  H02K3/30

CPC classification number: B32B27/08 ,  H01B3/40 ,  H02K3/30

Abstract: A functionally graded material according to the present invention adopts, for example, the following configuration. A functionally graded material is constituted by laminating a plurality of resin compositions. Among the plurality of resin compositions, a first resin composition has a different property from a second resin composition adjacent to the first resin composition. An interface between the first resin composition and the second resin composition is joined by a dynamic covalent bond.