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    • 7. 发明授权
    • Electrospun fibrous nanocomposites as permeable, flexible strain sensors
    • 电纺纤维纳米复合材料作为可渗透的应变传感器
    • US08108157B2
    • 2012-01-31
    • US12378667
    • 2009-02-18
    • George G. ChaseAlexander YarinManish K. TiwariConstantine M. Megaridis
    • George G. ChaseAlexander YarinManish K. TiwariConstantine M. Megaridis
    • G06F19/00
    • G01L1/20G01L1/22
    • The present invention generally relates to methods to provide electrospun polymer/nanoparticle composite-fiber structures for use as lightweight, compliant, porous strain sensors for non-cyclic strain sensing. In one embodiment, the fibers in the nanocomposites comprise, for example, poly(∈-caprolactone) (PCL) dielectric polymer matrix with embedded electrically conductive carbon black (CB) nanoparticles. In another embodiment, the composite-fiber structures of the present invention contain at least about 7 weight percent or more of CB and are electrically conducting in the as-spun, un-deformed state, and are thus called conductive polymer composites (CPC). In still another embodiment, the electrical resistance of a nanocomposite structure according to the invention increases with strain, and at sufficiently high strains the structure is rendered non-conductive.
    • 本发明一般涉及提供用于非循环应变感测的轻质,顺应性多孔应变传感器的电纺聚合物/纳米颗粒复合纤维结构的方法。 在一个实施方案中,纳米复合材料中的纤维包括例如具有嵌入的导电炭黑(CB)纳米颗粒的聚(ε-己内酯)(PCL)介电聚合物基质。 在另一个实施方案中,本发明的复合纤维结构含有至少约7重量%或更多的CB,并且在原纺未变形状态下导电,因此称为导电聚合物复合材料(CPC)。 在另一个实施方案中,根据本发明的纳米复合材料结构的电阻随着应变而增加,并且在足够高的应变下,结构变得不导电。