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无甲酸盐塑化电约性P ((VDF-TrFE-CTFE) 的增强执行

Giulio Gallucci¹, Andres Hunt¹

¹Department of Precision and Microsystems Engineering, Faculty of Mechanical Engineering, Delft University of Technology, Mekelweg 2, Delft 2628 CD, The Netherlands.

|March 16, 2026

概括

这项研究增强了使用增塑剂的聚乙烯化物-三乙烯-三乙烯 (P-VDF-TrFE-CTFE) 电活性聚合物执行器. 与特定的增塑剂混合显著增加了应变和偏移,以改善软机器人和可穿戴应用.

科学领域:

材料科学材料科学材料科学
聚合物科学聚合物科学
电子机械工程电子机械工程

背景情况:

基于聚乙烯化物-三乙烯-三乙烯-三乙烯 (P-VDF-TrFE-CTFE) 的电活性聚合物 (EAP) 执行器由于其较大的应变和合规性,对软机器人和可穿戴设备具有前景.
优化EAP特性,特别是电机传导,对于扩大其应用范围至关重要.
无甲酸盐可塑剂为修改聚合物特性提供了更安全的替代方案.

研究的目的:

研究三种无甲酸盐增塑剂 (BTHC,DINCH,TOTM) 对P-(VDF-TrFE-CTFE) 聚合物的电机传导性能的影响.
量化通过增塑剂混合实现的现场诱导应变和执行器偏移的改进.
探索塑化剂度,薄膜形态和执行器性能之间的关系.

主要方法:

薄膜P- ((VDF-TrFE-CTFE) 与不同度的BTHC,DINCH和TOTM混合,使用版印刷制造.
分析了薄膜形态 (SEM),结晶性 (XRD) 和介电性质.
单态驱动器被构建和特征,以测量场诱导的横向应变和尖端偏移在不同的电场和频率下.

主要成果:

在TOTM 10重 %混合物中,最大应变增加了多达12.5×,在33.2V/μm时达到1%.
观察到TOTM 5重% (246.6微米在0.1赫兹,1.65毫米在共振) 的最大尖端偏移.
使用BTHC15重%和TOTM10重%的执行器在18V/μm时分别显示了3.8×和4×的应变改善. DINCH 5重%和TOTM 5重%的曲率分别是1.48×和2.2×的.

结论:

无甲酸盐的增塑剂,特别是TOTM和BTHC,显著增强了P- ((VDF-TrFE-CTFE) 电活性聚合物执行器中的电力传导.
整合了可塑化剂,可以改善执行器的应变,偏移和故障场强度.
进一步优化回火工艺,增塑剂度和减少薄膜多孔度,可以带来更大的性能提升.

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