弹性体
材料科学
电介质
复合材料
模数
粘弹性
磁滞
介电弹性体
执行机构
延伸率
极限抗拉强度
计算机科学
物理
人工智能
光电子学
量子力学
作者
Jun Shintake,Koya Matsuno,Kazumasa Baba,Hiromitsu Takeuchi
标识
DOI:10.1088/1361-665x/ac42e9
摘要
Abstract This paper investigates the characteristics of sliding ring materials (SRMs), which are promising elastomeric materials for dielectric elastomer actuators (DEAs). Two different types of SRMs with Young’s modulus of 0.8 MPa and 3.3 MPa, respectively, are prepared, and their material and mechanical properties and electro-mechanical performances at electric fields of up to 30 V µ m −1 are characterized. For comparison, the same tests are also performed on several commercially available elastomers: Elastosil 2030, Ecoflex 00-30, CF19-2186, and VHB 4905. The results reveal that SRMs demonstrate negligible Mullins effect and hysteresis, while their dielectric strength (62.4–112.4 V µ m −1 ) and viscoelasticity ( tan δ 0.07–0.24 at 10 Hz) are comparable or even superior to those of other elastomers. In addition, elongation at break is found to be 163.8%–172.1%. SRMs exhibit excellent electro-mechanical performance; for instance, one of the two types has an actuation force 293.2 mN at 24.9 V µ m −1 and a strain of 5.2% at 22.3 V µ m −1 . These values are the largest or larger than most of the tested elastomers. The high performance of SRMs results from their dielectric constant, which ranges from 10.3 to 13.4, leading to an electro-mechanical sensitivity of up to 15.3 MPa −1 . These results illustrate SRMs as attractive material options for DEAs.
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