16 July 2001 Field-actuated behavior of polymers as dielectric material
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Abstract
The actuation of electrostrictive polymer (EP) actuator under electric field is known due to the electrostatic force between the parallel compliant electrodes on both sides of polymer film, which means the magnitude of electric potential between the electrodes is one of the determinative parameters of the actuation. The actuation is also dependent on the material properties such as dielectric constant and elastic modulus of polymers. In order to maximize the actuation behavior, high dielectric constant and low elastic modulus is essential. Dielectric constant of polymers is typically known to lie between 2.5 and 10, and it depends highly upon the frequency of electric field. The elastic modulus of polymeric elastomers is also dependent highly on the mechanical frequency of motion, when the EP actuator is periodically actuated. The mechanical frequency is generally equivalent to the electric one, since the mechanical motion is induced by the changes of the electric field. In this study, the electrostriction behavior was modeled with the response to the applied electric field in view of the dielectric and the mechanical characteristics of polymeric elastomer.
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Hong Kyeong Kim, Hong Kyeong Kim, Sungduk Hwang, Sungduk Hwang, Hyuk Ryul Choi, Hyuk Ryul Choi, Hunmo Kim, Hunmo Kim, Jaewook Jeon, Jaewook Jeon, Jaedo Nam, Jaedo Nam, } "Field-actuated behavior of polymers as dielectric material", Proc. SPIE 4329, Smart Structures and Materials 2001: Electroactive Polymer Actuators and Devices, (16 July 2001); doi: 10.1117/12.432682; https://doi.org/10.1117/12.432682
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