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首页> 外文期刊>Advanced Functional Materials >Ultrastretchable Fibers with Metallic Conductivity Using a Liquid Metal Alloy Core
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Ultrastretchable Fibers with Metallic Conductivity Using a Liquid Metal Alloy Core

机译：使用液态金属合金芯的具有金属导电性的超拉伸纤维

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摘要

The fabrication and characterization of fibers that are ultrastretchable and have metallic electrical conductivity are described. The fibers consist of a liquid metal alloy, eutectic gallium indium (ECaln), injected into the core of stretchable hollow fibers composed of a triblock copolymer, poly[styrene-b-(ethylene-co-butylene)-b-styrene] (SEBS) resin. The hollow fibers are easy to mass-produce with controlled size using commercially available melt processing methods. The fibers are similar to conventional metallic wires, but can be stretched orders of magnitude further while retaining electrical conductivity. Mechanical measurements with and without the liquid metal inside the fibers show the liquid core has a negligible impact on the mechanical properties of the fibers, which is in contrast to most conductive composite fibers. The fibers also maintain the same tactile properties with and without the metal. Electrical measurements show that the fibers increase resistance as the fiber elongates and the cross sectional area narrows. Fibers with larger diameters change from a triangular to a more circular cross-section during stretching, which has the appeal of lowering the resistance below that predicted by theory. To demonstrate their utility, the ultrastretchable fibers are used as stretchable wires for earphones and for a battery charger and perform as well as their conventional parts.
机译：描述了可超拉伸并具有金属导电性的纤维的制造和表征。纤维由液态金属合金，共晶镓铟（ECaln）组成，注入到由三嵌段共聚物，聚[苯乙烯-b-（乙烯-共-丁烯）-b-苯乙烯]（SEBS）组成的可拉伸中空纤维的芯中）树脂。中空纤维易于使用市售的熔融加工方法以受控的尺寸大量生产。纤维与常规金属线相似，但是可以在保持导电性的同时进一步拉伸几个数量级。与大多数导电复合纤维相反，在纤维内部有或没有液态金属的情况下进行的机械测量表明，液芯对纤维的机械性能的影响可忽略不计。在有或没有金属的情况下，纤维还保持相同的触觉特性。电学测量表明，随着纤维伸长和横截面积变窄，纤维会增加电阻。在拉伸过程中，较大直径的纤维的横截面从三角形变为更圆形，这具有将电阻降低到理论值以下的吸引力。为了证明其实用性，超拉伸纤维被用作耳机和电池充电器的可拉伸线材，其性能与常规部件一样好。

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  • 来源
    《Advanced Functional Materials》 |2013年第18期|2308-2314|共7页
  • 作者

    Shu Zhu; Ju-Hee So; Robin Mays; Shaivil Desai; William R. Barnes; Behnam Pourdeyhimi; Michael D. Dickey;

  • 作者单位

    Department of Chemical and Biomolecular Engineering North Carolina State University 911 Partners Way, Raleigh, NC 27695, USA;

    Department of Chemical and Biomolecular Engineering North Carolina State University 911 Partners Way, Raleigh, NC 27695, USA;

    Department of Chemical and Biomolecular Engineering North Carolina State University 911 Partners Way, Raleigh, NC 27695, USA;

    Department of Chemical and Biomolecular Engineering North Carolina State University 911 Partners Way, Raleigh, NC 27695, USA;

    The Nonwovens Institute, North Carolina State University,1000 Main Campus Dr., Raleigh, NC 27606, USA;

    The Nonwovens Institute, North Carolina State University,1000 Main Campus Dr., Raleigh, NC 27606, USA;

    Department of Chemical and Biomolecular Engineering North Carolina State University 911 Partners Way, Raleigh, NC 27695, USA;

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