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首页> 外文期刊>Smart Materials & Structures >Dielectric elastomer materials for large-strain actuation and energy harvesting: a comparison between styrenic rubber, natural rubber and acrylic elastomer
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Dielectric elastomer materials for large-strain actuation and energy harvesting: a comparison between styrenic rubber, natural rubber and acrylic elastomer

机译：用于大应变致动和能量收集的介电弹性体材料：苯乙烯橡胶，天然橡胶和丙烯酸弹性体之间的比较

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摘要

This paper compares the performance of commercially available membranes made of styrenic rubber, natural rubber and acrylic elastomer for dielectric elastomer transducers (DETs) operating in the large strain regime. Following a detailed description of the adopted experimental set-up and procedures, the results of a comprehensive electro-mechanical characterization of the three materials are reported to highlight the following dependencies: dielectric strength versus stretch, electrical conductivity versus electric field, dielectric constant versus stretch, stress versus stretch and strain rate. This includes the fitting of the experimental data with constitutive equations which provide material property values that can be used for model-based analysis, design and control of dielectric elastomer actuators and generators operating at large levels of strain amplitudes (like, for instance, transducers featuring actuation and generator strains over 50%) or in the presence of large pre-strains (over 50%). Performance metrics relying on the identified constitutive parameters are introduced in order to discuss the specific pros and cons of the considered elastomers for the development of practical DETs.
机译：本文比较了在大应变制度中运行的介电弹性体换能器（DETS）由苯乙烯橡胶，天然橡胶，天然橡胶和丙烯酸弹性体制成的市售膜的性能。在采用的实验设置和程序的详细描述之后，据报道了三种材料的综合电力表征的结果突出了以下依赖性：介电强度与拉伸，电导率与电场相比，介电常数与拉伸相比，压力与拉伸和应变率。这包括具有本构方程的实验数据的拟合，其提供可用于基于模型的分析，介电弹性体致动器和在大级别应变幅度的发电机的设计和控制（例如，例如换能器为特色致动和发电机菌株超过50％）或在大菌株的存在下（超过50％）。依赖于所识别的本构体参数的性能指标旨在讨论所考虑的弹性体的特定优缺点，以便开发实用的DED。

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