单层和堆介电弹性体驱动器使用与乙烯硫基组修改的聚氧
Cansu Zeytun Karaman1,2, Thulasinath Raman Venkatesan1, Frank A Nüesch1,2
1Laboratory for Functional Polymers, Swiss Federal Laboratories for Materials Science and Technology Empa, Ueberlandstr. 129, CH-8600 Dübendorf, Switzerland.
ACS applied materials & interfaces
|June 17, 2025
概括
研究人员开发了新的介电弹性体执行器 (DEAs),使用高允许性聚氧. 这些软执行器在较低的电场中实现了显著的应变,提高了机器人和假肢的性能.
科学领域:
- 材料科学 材料科学 材料科学
- 聚合物化学 聚合物化学
- 机器人工程 机器人工程 机器人工程
背景情况:
- 介电弹性体执行器 (DEA) 对软机器人和假肢非常重要,但通常需要高工作电压或提供低功率输出.
- 限制来自于低介电性或过软的弹性体,阻碍了实际应用.
- 使用高容量弹性体的堆执行器提供了一个潜在的解决方案,以增强力和降低电压要求.
研究的目的:
- 为了合成和优化DEAs的高允许性聚氧.
- 通过在聚氧骨架内的不同功能组来提高机电性能.
- 根据新材料评估单层和堆DEA的执行性能.
主要方法:
- 聚氧与不同比例的乙烯硫基乙和丁基乙组的合成.
- 在不同电场下介电性质 (允许性,导电性) 和电机动作 (应变) 的表征.
- 五个单层堆DEA的制造和测试,以评估在操作条件下的性能.
主要成果:
- 优化的聚氧具有16.2的介电电容量,低导电性 (1.8 × 10-10 S cm-1) 和13%的横向应变在8.2 V μm-1时.
- 这种材料的性能明显优于需要超过20Vμm-1的先进材料,用于类似的驱动.
- 一个五层堆执行器在14.5Vμm-1时实现了4.5%的厚度应变,表现出高达10Hz和超过4000个周期的稳定性能.
结论:
- 新型高允许性聚氧为提高DEA性能提供了一个有前途的途径.
- 开发的材料使DEA能够在较低的电场下运行,从而增加力输出和效率.
- 这些进步为下一代软机器人,假肢和其他精确运动应用提供了潜力.
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