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    • 1. 发明申请
    • CAPACITOR HAVING HIGH TEMPERATURE STABILITY, HIGH DIELECTRIC CONSTANT, LOW DIELECTRIC LOSS, AND LOW LEAKAGE CURRENT
    • 具有高温稳定性,高介电常数,低介电损耗和低漏电流的电容器
    • US20110228442A1
    • 2011-09-22
    • US13049423
    • 2011-03-16
    • Shihai ZhangChen ZouXin ZhouQiming Zhang
    • Shihai ZhangChen ZouXin ZhouQiming Zhang
    • H01G4/06
    • H01G4/18H01G4/30H01G4/32
    • Examples of the present invention include high electric energy density polymer film capacitors with high dielectric constant, low dielectric dissipation tangent, and low leakage current in a broad temperature range. More particularly, examples include a polymer film capacitor in which the dielectric layer comprise a copolymer of a first monomer (such as tetrafluoroethylene) and a second polar monomer. The second monomer component may be selected from vinylidene fluoride, trifluoroethylene or their mixtures, and optionally other monomers may be included to adjust the mechanical performance. The capacitors can be made by winding metallized films, plain films with metal foils, or hybrid construction where the films comprise the new compositions. The capacitors can be used in DC bus capacitors and energy storage capacitors in pulsed power systems.
    • 本发明的实例包括在宽温度范围内具有高介电常数,低介电损耗切线和低漏电流的高电能密度聚合物膜电容器。 更具体地,实例包括其中介电层包含第一单体(例如四氟乙烯)和第二极性单体的共聚物的聚合物膜电容器。 第二单体组分可以选自偏二氟乙烯,三氟乙烯或其混合物,并且任选地可以包括其它单体以调节机械性能。 电容器可以通过卷绕金属化薄膜,带有金属箔的普通薄膜或其中薄膜包含新组合物的混合结构来制造。 电容器可用于脉冲电源系统中的直流总线电容器和储能电容器。
    • 4. 发明申请
    • ELECTROMECHANICAL POLYMER ACTUATORS
    • 电动聚合物致动器
    • US20110038625A1
    • 2011-02-17
    • US12856035
    • 2010-08-13
    • Brian ZellersShuxiang DongShihai ZhangQiming Zhang
    • Brian ZellersShuxiang DongShihai ZhangQiming Zhang
    • G03B13/34G02B7/02
    • G03B13/34G02B7/04G02B26/0875
    • An adaptive lens comprises an actuator and a lens, the lens being mechanically coupled to the actuator so that energization of the actuator adjusts a focal point of the lens. The actuator may comprise a multilayer stack of electromechanical polymer (EMP) layers, having electrodes configured to apply an electric field across each EMP layer. The actuator may be operable to move and/or deform a lens, so as to adjust the focus properties of the lens. In some examples, the actuator has an annular shape, supporting a lens within the inner radius of the annulus. The lens position may be adjusted in an axial direction. In other examples, the actuator may be mechanically coupled a surface of a deformable lens, either directly or through another element of a lens structure. A strain applied to the lens modifies a curved surface of the lens, hence modifying the focal length of the lens.
    • 自适应透镜包括致动器和透镜,透镜机械地联接到致动器,使得致动器的通电调节透镜的焦点。 致动器可以包括机电聚合物(EMP)层的多层叠层,其具有被配置为在每个EMP层上施加电场的电极。 致动器可操作以使透镜移动和/或变形,以便调节透镜的聚焦特性。 在一些示例中,致动器具有环形形状,在透镜的内半径内支撑透镜。 透镜位置可以沿轴向调节。 在其他示例中,致动器可以直接或通过透镜结构的另一元件机械耦合在可变形透镜的表面上。 施加到透镜的应变修改透镜的曲面,从而改变透镜的焦距。
    • 5. 发明申请
    • HIGH ELECTRIC ENERGY DENSITY POLYMERIC COMPOSITIONS, METHODS OF THE MANUFACTURE THEREFOR, AND ARTICLES COMPRISING THE SAME
    • 高电能密度聚合物组合物及其制造方法及其包含的物品
    • US20100067172A1
    • 2010-03-18
    • US12403596
    • 2009-03-13
    • Shihai ZhangQiming Zhang
    • Shihai ZhangQiming Zhang
    • H01G4/08
    • H01G4/18C08L25/06C08L27/16C08L67/02C08L69/00C08L71/12C08L81/02C08L81/04H01G4/14Y02T10/7022C08L2666/04C08L2666/18C08L2666/06C08L81/00C08L2666/22
    • Examples of the present invention relate generally to high electric energy density polymer film capacitors with high charge-discharge efficiency and fast discharge speed. For example, a high energy density polymer capacitor may be fabricated using a polymer blend comprising one or more high dielectric constant PVDF-based polymers (including homopolymers, copolymers and/or terpolymers) and one or more other polymer with low dielectric loss and high volume resistivity compared to the one or more PVDF-based polymers. An example film capacitor may comprise a high temperature fluoropolymer with dielectric loss lower than 0.2% and good film manufacturability. Polymer films can be stretched and orientated at least in one direction to make thinner films with improved performance. Film capacitors can be made by winding metallized films, plain films with metal foils, or using a hybrid construction where the dielectric films comprise the new compositions. Capacitors can also have a multilayer construction where the films are metallized.
    • 本发明的实例一般涉及具有高充电 - 放电效率和快速放电速度的高电能密度聚合物膜电容器。 例如,可以使用包含一种或多种高介电常数PVDF基聚合物(包括均聚物,共聚物和/或三元共聚物)和一种或多种具有低介电损耗和高体积的其它聚合物的聚合物共混物来制造高能量密度聚合物电容器 电阻率与一种或多种PVDF基聚合物相比。 示例性薄膜电容器可以包括介电损耗低于0.2%的高温含氟聚合物和良好的薄膜可制造性。 聚合物膜可以至少在一个方向上被拉伸和取向以制备具有改进性能的较薄膜。 薄膜电容器可以通过卷绕金属化膜,带有金属箔的平板膜或者使用其中电介质膜包含新组合物的混合结构来制造。 电容器也可以具有多层结构,其中膜被金属化。