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    • 41. 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)。