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    MULTILAYER ELECTRIC FIELD GRADING ARTICLE, METHODS OF MAKING THE SAME, AND ARTICLES INCLUDING THE SAME
    26.
    发明申请
    MULTILAYER ELECTRIC FIELD GRADING ARTICLE, METHODS OF MAKING THE SAME, AND ARTICLES INCLUDING THE SAME 审中-公开

    公开(公告)号：WO2020188371A1

    公开(公告)日：2020-09-24

    申请号：PCT/IB2020/051406

    申请日：2020-02-19

    Applicant: 3M INNOVATIVE PROPERTIES COMPANY

    Inventor： GHOSH, Dipankar ,  PHAN, John

    IPC: H01B3/00

    Abstract: A multilayer electric field grading article comprises first and second layers forming a discrete interface. The first layer comprises a first electric field grading composition comprising first particles dispersed in a first matrix material. The second layer comprises a second electric field grading composition comprising second particles, compositionally different than the first particles, dispersed in a second matrix material. The first and second layers have respective first and second degrees of nonlinearity between respective first and second onset voltages and corresponding first and second breakdown voltages. The first and second layers taken together have a combined onset voltage that is higher than the first and second onset voltages, and the first and second layers taken together have a greater combined degree of nonlinearity than each of the first and second degrees of nonlinearity taken individually. A method of reducing electric field stress at a joint or termination of a substrate includes applying the multilayer electric field grading article to a surface of a substrate.

    COMPOSITES FOR HIGH FREQUENCY ELECTROMAGNETIC INTERFERENCE (EMI) APPLICATIONS
    28.
    发明申请
    COMPOSITES FOR HIGH FREQUENCY ELECTROMAGNETIC INTERFERENCE (EMI) APPLICATIONS 审中-公开
    高频电磁干扰（EMI）应用的复合材料

    公开(公告)号：WO2017116656A1

    公开(公告)日：2017-07-06

    申请号：PCT/US2016/065916

    申请日：2016-12-09

    Applicant: 3M INNOVATIVE PROPERTIES COMPANY

    Inventor： GHOSH, Dipankar ,  RATHORE, Jitendra S.

    IPC: H01B1/24 ,  H05K9/00 ,  H01L23/552

    CPC classification number: H05K9/0083 ,  H01B1/24 ,  H01L2924/3025

    Abstract: Electromagnetic interference (EMI) shielding articles and methods of producing and using the same are described. The articles include electrically conductive fillers and silsesquioxane-like (SSQ-like) particles distributed inside a polymeric matrix material. In some cases, adding the SSQ-like particles leads to increased porosity of the articles which improves EMI absorbing performance.

    Abstract translation: 描述了电磁干扰（EMI）屏蔽物品及其制造和使用方法。 这些制品包括分布在聚合物基体材料内的导电填料和类倍半硅氧烷（SSQ-like）颗粒。 在一些情况下，添加SSQ样颗粒导致制品的孔隙率增加，这提高了EMI吸收性能。

    VOLTAGE SENSOR
    29.
    发明申请
    VOLTAGE SENSOR 审中-公开
    电压传感器

    公开(公告)号：WO2015095150A1

    公开(公告)日：2015-06-25

    申请号：PCT/US2014/070530

    申请日：2014-12-16

    Applicant: 3M INNOVATIVE PROPERTIES COMPANY

    Inventor： GRAVERMANN, Mark ,  EGGERT, Sebastian ,  PETRY, Michael ,  ROEHLING, Werner ,  BUSEMANN, Friedrich ,  SCHUBERT, Bernd ,  LOHMEIER, Gerhard ,  STALDER, Michael H. ,  WEICHOLD, Jens ,  REEKEN, Rainer ,  SABO, Andreea ,  WEINMANN, Christian ,  GHOSH, Dipankar ,  KANG, Myungchan ,  SEBESTA, Christopher D.

    IPC: G01R19/00

    CPC classification number: G01R15/16 ,  G01R19/0084

    Abstract: Voltage sensor (1) for a high- or medium-voltage power-carrying conductor for a power network, such as an inner conductor of a power cable or a cable connector or a bus bar. The voltage sensor has a tubular shape and an axial passageway (40), which can receive the conductor. The voltage sensing device comprises a) a radially-inner electrode (20), operable as a first sensing electrode of a sensing capacitor for sensing the voltage of the power-carrying conductor, b) a radially-outer electrode (30), operable as a second sensing electrode of the sensing capacitor, and c) a solid carrier element (10), at least a first portion of which is arranged between the inner electrode and the outer electrode, the first portion being operable as a dielectric of the sensing capacitor. The sensor can be accommodated in a cable accessory. The carrier element may comprise ceramic material to increase accuracy.

    Abstract translation: 用于电力网络的高压或中压供电导体的电压传感器（1），例如电力电缆或电缆连接器或汇流条的内部导体。 电压传感器具有管状形状和可接收导体的轴向通道（40）。 电压感测装置包括：a）径向内部电极（20），其可操作为用于感测电力承载导体的电压的感测电容器的第一感测电极，b）径向外部电极（30），其可操作为 感测电容器的第二感测电极，以及c）固体载体元件（10），其至少第一部分布置在所述内部电极和所述外部电极之间，所述第一部分可操作为所述感测电容器的电介质 。 传感器可以容纳在电缆附件中。 载体元件可以包括陶瓷材料以提高精度。

    POLYMER COMPOSITES WITH ELECTROMAGNETIC INTERFERENCE MITIGATION PROPERTIES
    30.
    发明申请
    POLYMER COMPOSITES WITH ELECTROMAGNETIC INTERFERENCE MITIGATION PROPERTIES 审中-公开
    具有电磁干扰减弱特性的聚合物复合材料

    公开(公告)号：WO2014130431A2

    公开(公告)日：2014-08-28

    申请号：PCT/US2014/016828

    申请日：2014-02-18

    Applicant: 3M INNOVATIVE PROPERTIES COMPANY

    Inventor： GHOSH, Dipankar ,  ROY, Biplab K. ,  SATARKAR, Nitin S.

    IPC: H01B1/24

    CPC classification number: H01B1/22 ,  C08K3/013 ,  C08K3/04 ,  C08K3/041 ,  C08K3/042 ,  C08K3/046 ,  C08K3/22 ,  C08K2003/2248 ,  H01B1/24 ,  C08L27/16

    Abstract: Polymer composites that are suitable for use as electromagnetic interference mitigaters include a lossy polymeric matrix, ceramic particles dispersed within the polymeric matrix, and conductive particles dispersed within the polymeric matrix. The lossy polymeric matrix may be a fluorocarbon-based polymer matrix, or an epoxy-based polymer matrix. The ceramic particles may be metal oxide particles, especially copper oxide (CuO) particles. The conductive particles may be carbon black. Other electromagnetic interference mitigating polymer matrices include a lossy polymeric matrix and copper oxide (CuO) particles dispersed within the polymeric matrix.

    Abstract translation: 适合用作电磁干扰缓蚀剂的聚合物复合材料包括有损聚合物基体，分散在聚合物基体内的陶瓷颗粒和分散在聚合物基体内的导电颗粒。 有损耗的聚合物基体可以是基于碳氟化合物的聚合物基体或基于环氧树脂的聚合物基体。 陶瓷颗粒可以是金属氧化物颗粒，特别是氧化铜（CuO）颗粒。 导电颗粒可以是炭黑。 其他电磁干扰缓解聚合物基质包括有损聚合物基质和分散在聚合物基质内的氧化铜（CuO）颗粒。

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