Electro-thermo-elastomers for artificial muscles

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• 作者：Pierre-Jean Cottinet ; ^{pierre-jean.cottinet@insa-lyon.fr} ; ^{pjcottinet@gmail.com}&#xA0 ; [Author Vitae] ; Daniel Guyomar&#xA0 ; [Author Vitae] ; Jeremy Galineau&#xA0 ; [Author Vitae] ; Gaë ; l Sebald&#xA0 ; [Author Vitae]
• 关键词：Electroactive polymer ; Actuator ; Thermal actuator ; Entropic
• 刊名：Sensors and Actuators A ; Physical
• 出版年：2012
• 期刊代码：160_09244247
• 类别：et
• 出版时间：June, 2012
• 卷：180
• 期：Complete
• 页码：105-112
• 文件大小：1030 K

摘要

This paper presents the concept, design and characterization of new type of thermal actuator, which utilizes the entropic properties of natural rubber elastomer. For a stretched elastomer the thermal expansion is negative above its glass transition temperature. The actuator presented in this study comprised an elastomer film and flexible resistive heater realized by photo-etching a Nickel-Silver photosensitized wafer. The results demonstrated that the thermal actuator was able to generate a strain of 5%and a stress of 1 MPa for an input electric energy of 25 J, i.e. a strain comparable to human muscles mechanical properties.