弹性体
材料科学
硅酮
执行机构
弹性聚硅酮类
复合材料
薄膜
纳米技术
高分子科学
法律工程学
机械工程
工程类
电气工程
作者
Hiroshi Fukui,Masayasu Akasaka,Norihisa Kishimoto,Tsuda Takeaki,Kaito Sasaki
标识
DOI:10.1002/adem.202301355
摘要
Dielectric elastomers (DEs) are actively being studied to develop soft transducers including DE actuators (DEAs). Poly(dimethylsiloxane) is a popular elastomer component and known for yielding relatively low in dielectric constant ( ε ') for DEAs. Herein, we report a novel polysiloxane‐based DE, namely, DOWSIL™ ME 7540 Electroactive Elastomer, offering ε ' = 5.2–5.5 over a broad frequency range that is nearly two times as high as that for commercially popular SYLGARD™ 184 Silicone Elastomer as a comparative DE. Weibull analysis is useful for statistically evaluating dielectric strength (DS). ME 7540 DE attains DS = 63.8 V μm −1 , which is only 16% lower than DS = 75.7 V μm −1 obtained with 184 DE. The material parameters obtained by fitting uniaxial extension results with the Yeoh model are used to simulate an equi‐biaxial stress–stretch ratio ( λ i b ) curve, with i = 1 or 2, and relationship between voltage and λ 1 b . Simulation and actuation experiments confirm that ME 7540 DE performs better than 184 DE over one million cycles. With these advantages, ME 7540 DE will help accelerate not only fundamental studies but also developments in real‐life applications in the DEA field. This article is protected by copyright. All rights reserved.
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