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    • 11. 发明授权
    • Ferroelectric relaxer polymers
    • 铁电松弛聚合物
    • US06423412B1
    • 2002-07-23
    • US09195061
    • 1998-11-18
    • Qiming ZhangVivek Bharti
    • Qiming ZhangVivek Bharti
    • B32B2730
    • H01L41/45H01G4/18Y10S428/91Y10T428/3154Y10T428/31544Y10T428/31699
    • The invention is embodied in an electrical device which includes at least a layer of a ferroelectric polyvinylidine fluoride polymer that has been processed to exhibit an electrostrictive strain of 4% or more when an electric field gradient of 50 megavolts per meter or greater is applied thereacross. The processing of the polymer preferably involves subjecting it to either electron beam radiation or gamma radiation. The polyvinylidine flouride polymer is selected from the group of: polyvinylidine fluoride, polyvinylidine fluoride-trifluoroethylene P(VDF-TrFE), polyvinylidine fluoride tetrafluoroethylene P(VDF-TFE), polyvinylidine fluoride trifluoroethylene-hexafluoropropylene P(VDF-TFE-HFE) and polyvinylidine fluoride-hexafluoropropylene P(VDF-HFE).
    • 本发明体现在一种电气装置中,该电气装置至少包括一层铁电聚偏氟乙烯聚合物,当层间施加50兆伏特/米或更大的电场梯度时,其已经被处理以显示出4%以上的电致伸缩应变。 聚合物的加工优选包括对其进行电子束辐射或γ辐射。 聚偏二氟乙烯聚合物选自:聚偏氟乙烯,聚偏氟乙烯 - 三氟乙烯P(VDF-TrFE),聚偏氟乙烯四氟乙烯P(VDF-TFE),聚偏二氟乙烯三氟乙烯 - 六氟丙烯P(VDF-TFE-HFE)和聚偏二氟乙烯 氟化六氟丙烯P(VDF-HFE)。
    • 12. 发明授权
    • Piezoelectric type liquid droplet ejecting device which compensates for
residual pressure fluctuations
    • 用于补偿残余压力波动的压电式液滴喷射装置
    • US5757392A
    • 1998-05-26
    • US599263
    • 1996-02-09
    • Qiming Zhang
    • Qiming Zhang
    • B41J2/045B41J29/38
    • B41J2/04581B41J2/04588B41J2/04595B41J2/04596B41J2002/14354
    • A piezoelectric-type liquid droplet ejecting device including a piezoelectric element. A predetermined voltage pulse is applied to the piezoelectric element, whereupon residual pressure fluctuations are generated in the pressure chamber of the liquid droplet ejecting device. The piezoelectric element or a separate piezoelectric element generates an electric signal corresponding to the residual pressure fluctuations. A detection circuit receives the electric signal and supplies a detection signal corresponding to the electric signal to a calculation circuit for calculating a voltage pulse. The calculation circuit supplies the voltage pulse to a drive circuit, which applies it to the piezoelectric element. The voltage pulse deforms the piezoelectric element upon application thereto in a manner sufficient to compensate for residual pressure fluctuation in the pressure chamber.
    • 一种包括压电元件的压电型液滴喷射装置。 对压电元件施加预定的电压脉冲,从而在液滴喷射装置的压力室中产生残余压力波动。 压电元件或单独的压电元件产生对应于残余压力波动的电信号。 检测电路接收电信号并将与电信号相对应的检测信号提供给用于计算电压脉冲的计算电路。 计算电路将电压脉冲提供给将其施加到压电元件的驱动电路。 电压脉冲在施加时使压电元件以足以补偿压力室中的残余压力波动的方式变形。
    • 15. 发明授权
    • High strain electrostrictive polymer
    • 高应变电致伸缩聚合物
    • US07078101B1
    • 2006-07-18
    • US10719852
    • 2003-11-21
    • Thomas S. RamotowskiGeorge J. KavarnosQiming Zhang
    • Thomas S. RamotowskiGeorge J. KavarnosQiming Zhang
    • B32B27/30
    • C08F214/22Y10T428/3154
    • The present invention is a new class of terpolymers for use as high strain electrostrictive polymer films. More particularly, the invention is a class of electrostrictive terpolymers comprising vinylidene fluoride (VDF), trifluoroethylene (TrFE) and at least one monomer having at least one halogen atom side group. The monomer is preferably an ethylene-based monomer and preferably selected to favor gauche-type linkage along the polymer backbone. The halogen atom side group is preferably large enough to move or cause adjacent polymer chains to be farther apart from or away from each other than in the absence of such side group, but not so large that it would inhibit polymer crystallites from forming. The monomer is preferably a chloro-monomer such as chlorofluoroethylene (CFE). The chlorofluoroethylene (CFE) is preferably 1-chloro-2-fluoroethylene or 1-chloro-1-fluoroethylene. The chlorofluoroethylene (CFE) favors gauche-type linkage which favors high electrostrictive strains.
    • 本发明是用作高应变电致伸缩聚合物膜的新型三元共聚物。 更具体地,本发明是一类包含偏二氟乙烯(VDF),三氟乙烯(TrFE)和至少一种具有至少一个卤素原子侧基的单体的电致伸缩三元共聚物。 单体优选为基于乙烯的单体,并且优选选择为有利于沿着聚合物主链的高密度连接。 卤素原子侧基优选足够大以使相邻的聚合物链远离或远离彼此而不是不存在这样的侧基,但不大于其将抑制聚合物微晶形成。 单体优选为氯代单体如氯氟乙烯(CFE)。 氯氟乙烯(CFE)优选为1-氯-2-氟乙烯或1-氯-1-氟乙烯。 氯氟乙烯(CFE)有利于高电导菌株的高密度连锁。
    • 17. 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。
    • 19. 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。