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Enhanced dielectric properties of acrylic resin elastomer (AE)-based percolative composite with modified MXene
Polymer Testing ( IF 5.0 ) Pub Date : 2021-09-09 , DOI: 10.1016/j.polymertesting.2021.107344
Xin-Hua Gao 1 , Jing-Wen Wang 1 , Da-Nian Liu 1 , Xin-Zhu Wang 1 , Hou-Qing Wang 1 , Lei Wei 1 , Hua Ren 2
Affiliation  

Excellent dielectric properties are essential for electromechanical applications of dielectric elastomer. This work confirms that acrylic resin elastomer (AE)-based percolative composites using MXene (Ti3C2Tx) nanosheets modified with PANI (referred to as PANI-Ti3C2Tx) as conductive fillers exhibit improved dielectric performances. Ti3C2Tx/AE and PANI-Ti3C2Tx/AE composites with different filler contents were prepared, and their percolation threshold are 6.01 vol% and 6.43 vol%, respectively. The dielectric constant of 6.39 vol% PANI-Ti3C2Tx/AE is 298 at 100 Hz, which 1.67 times that of 5.98 vol% Ti3C2Tx/AE composites (178), and is 85 times that of the pure AE matrix (3.5). Moreover, the dielectric loss of 6.39 vol% PANI-Ti3C2Tx/AE composite still maintains at a low level (0.29 at 100 Hz), which is lower than that of 5.98 vol% Ti3C2Tx/AE composite (0.55 at 100 Hz). We suppose that the improved dielectric constant of PANI-Ti3C2Tx/AE composites is attributed to the enhanced micro capacitors effect and Maxwell-Wagner-Sillars effect.



中文翻译:

具有改性 MXene 的丙烯酸树脂弹性体 (AE) 基渗透复合材料的介电性能增强

优异的介电性能对于介电弹性体的机电应用至关重要。这项工作证实,使用经 PANI(称为 PANI-Ti 3 C 2 T x)改性的MXene (Ti 3 C 2 T x ) 纳米片作为导电填料的基于丙烯酸树脂弹性体 (AE) 的渗透复合材料表现出改善的介电性能。Ti 3 C 2 T x /AE 和 PANI-Ti 3 C 2 T x制备了不同填料含量的 /AE 复合材料,其渗透阈值分别为 6.01 vol% 和 6.43 vol%。6.39 vol% PANI-Ti 3 C 2 T x /AE的介电常数在 100 Hz 时为 298,是 5.98 vol% Ti 3 C 2 T x /AE 复合材料 (178) 的1.67 倍,是 85 倍纯 AE 矩阵 (3.5)。此外,6.39 vol% PANI-Ti 3 C 2 T x /AE 复合材料的介电损耗仍保持在较低水平(0.29 at 100 Hz),低于 5.98 vol% Ti 3 C 2 T x/AE 复合(100 Hz 时为 0.55)。我们假设PANI-Ti 3 C 2 T x /AE 复合材料的介电常数提高归因于增强的微电容器效应和Maxwell-Wagner-Sillars 效应。

更新日期:2021-09-13
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