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首页> 外文会议>AD-vol.69; American Society of Mechanical Engineers(ASME) International Mechanical Engineering Congress and Exposition; 20041113-19; Anaheim,CA(US) >HIGH-STRAIN IONOMERIC - IONIC LIQUID COMPOSITES VIA ELECTRODE TAILORING
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HIGH-STRAIN IONOMERIC - IONIC LIQUID COMPOSITES VIA ELECTRODE TAILORING

机译：通过电极尾板分离高强度离子-离子液体复合材料

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摘要

Ionomeric polymers are a class of electromechanical transducer consisting of an ionomeric substrate with metal-plated electrodes. Application of a low voltage ( < 5 V) across the thickness of the membrane produces controllable strain. The advantage of ionomeric polymers compared to other types of electromechanical transducers (e.g. piezoelectric polymers) is low-voltage operation, high strain capability, and high sensitivity in charge mode. Two of the primary limitations of ionomeric polymers for electromechanical transducers are unstable operation in air and solvent breakdown at low voltage. This work focuses on overcoming these limitations through the development of an ionic liquid-ionomeric composite with a tailored electrode composition that maximizes strain output. It is becoming clear that charge accumulation at the polymer-electrode interface is the key to producing high strain in ionomeric polymer transducers. In this work we combine a previously developed process for incorporating ionic liquids into ionomer membranes with a new method for tailoring the electrode composition. The electrode composition is studied as a function of the surface-to-volume ratio and conductivity of the metal particulates. Results demonstrate that the surface-to-volume ratio of the metal particulate is critical to increasing the capacitance of the transducer. Increased conductivity of the metal particulates produces improved response at higher frequencies ( > 10 Hz) but this effect is small compared to the increase in strain produced by maximizing the capacitance. Increasing capacitance produces a transducer that is able to achieve > 2% strain at voltage levels of +/- 3 V.
机译：离聚物是一类机电换能器，由离聚物基底和镀金属的电极组成。在膜的整个厚度上施加低电压（<5 V）会产生可控的应变。与其他类型的机电换能器（例如压电聚合物）相比，离聚物聚合物的优势在于低电压运行，高应变能力以及充电模式下的高灵敏度。机电换能器的离聚物聚合物的两个主要限制是空气中的不稳定操作和低压下的溶剂击穿。这项工作的重点是通过开发具有量身定制的电极成分的离子液体-离聚物复合材料，从而最大限度地提高应变输出，从而克服这些限制。越来越明显的是，聚合物-电极界面处的电荷积累是在离聚物聚合物换能器中产生高应变的关键。在这项工作中，我们将先前开发的将离子液体掺入离聚物膜的工艺与定制电极组成的新方法相结合。根据金属颗粒的表面体积比和电导率来研究电极组成。结果表明，金属微粒的表面体积比对于增加换能器的电容至关重要。金属微粒的电导率增加会在更高的频率（> 10 Hz）下产生改善的响应，但与通过最大化电容产生的应变增加相比，这种影响很小。电容的增加将产生一个传感器，该传感器在+/- 3 V的电压水平下能够实现> 2％的应变。

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