LIQUID-REPELLENT, LARGE-AREA, ELECTRICALLY-CONDUCTING POLYMER COMPOSITE COATINGS
    6.
    发明申请
    LIQUID-REPELLENT, LARGE-AREA, ELECTRICALLY-CONDUCTING POLYMER COMPOSITE COATINGS 审中-公开
    液体,大面积,电导率聚合物复合涂料

    公开(公告)号:US20120261182A1

    公开(公告)日:2012-10-18

    申请号:US13156908

    申请日:2011-06-09

    摘要: A polymeric composition including a blend of poly(vinylidine fluoride) (PVDF), poly(methyl methacrylate) (PMMA), carbon nanofibers, and poly(tetrafluoroethylene) (PTFE) particles is described and claimed. The polymeric composition may be coated onto a substrate and dried to form a film adhered to the substrate. The film optionally exhibits an electrical conductivity of about 10 Siemens per meter (S/m) to about 310 S/m and an electromagnetic interference shielding of about 32 decibels. Further, a coated substrate is provided including a substrate and a film adhered to the substrate, where the film includes a polymeric composition comprising a blend of PVDF, PMMA, carbon nanofibers, and PTFE particles.

    摘要翻译: 描述并要求保护包括聚(偏二氟乙烯)(PVDF),聚(甲基丙烯酸甲酯)(PMMA),碳纳米纤维和聚(四氟乙烯)(PTFE))颗粒的共混物的聚合物组合物。 聚合物组合物可以涂覆在基材上并干燥以形成粘合到基材上的膜。 该膜任选地表现出约10西门子每米(S / m)至约310S / m的电导率和约32分贝的电磁干扰屏蔽。 此外,提供了涂覆的基材,其包括基材和粘附到基材上的膜,其中该膜包括包含PVDF,PMMA,碳纳米纤维和PTFE颗粒的共混物的聚合物组合物。

    Electrospun fibrous nanocomposites as permeable, flexible strain sensors
    7.
    发明授权
    Electrospun fibrous nanocomposites as permeable, flexible strain sensors 有权
    电纺纤维纳米复合材料作为可渗透的应变传感器

    公开(公告)号:US08108157B2

    公开(公告)日:2012-01-31

    申请号:US12378667

    申请日:2009-02-18

    IPC分类号: G06F19/00

    CPC分类号: G01L1/20 G01L1/22

    摘要: 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.

    摘要翻译: 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。