Effect of electric field on storage modulus of dielectric composites

Ma Ning; Gong Guangping; Li Nannan; Li Bo; Dong Xufeng

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Effect of electric field on storage modulus of dielectric composites

机译：电场对电介质复合材料储存模量的影响

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DCs composed by dielectric particles and elastomer matrix present electric field dependent deformation. Viscoelasticity dominates their electric field response, which has to be considered in their applications. Although the influence of strain amplitude and oscillation frequency on the viscoelasticity of DCs has been investigated, the effect of electric field has been seldom studied. In this study, DCs were prepared by dispersing TiO(2)particles with different concentrations and different distributions within silicone rubbers. The areal strain and the storage modulus of the DCs under different electric fields were tested. The results indicated the electric field has significant influence on the storage modulus of the DCs. Such an electric field dependent storage modulus is more significant for the DCs with higher particle fraction, or with aligned distributed particles. The enhanced electrostatic interaction between the adjacent particles by applying electric field is responsible for the phenomena.

机译：由介电颗粒和弹性体基体组成的DCs呈现电场相关变形。粘弹性决定了它们的电场响应，这在它们的应用中必须加以考虑。虽然人们已经研究了应变振幅和振荡频率对DCs粘弹性的影响，但很少研究电场的影响。在本研究中，通过在硅橡胶中分散不同浓度和不同分布的TiO（2）颗粒来制备DCs。测试了DCs在不同电场下的面应变和储能模量。结果表明，电场对DCs的储能模量有显著影响。这种与电场有关的储能模量对于颗粒分数较高或颗粒排列整齐的DCs更为重要。通过施加电场，相邻粒子之间增强的静电相互作用是造成这种现象的原因。

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来源
《Journal of Applied Polymer Science》 |2021年第12期|共9页
作者
Ma Ning; Gong Guangping; Li Nannan; Li Bo; Dong Xufeng;
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作者单位

Dalian Univ Technol Sch Civil Engn Dalian Peoples R China;

Dalian Univ Technol Dept Engn Mech Dalian Peoples R China;

Dalian Univ Technol Sch Mat Sci &

Engn Liaoning Key Lab Energy Mat &

Devices Dalian 116024 Peoples R China;

Xi An Jiao Tong Univ State Key Lab Mfg Syst Engn Sch Mech Engn Xian Peoples R China;

Dalian Univ Technol Sch Mat Sci &

Engn Liaoning Key Lab Energy Mat &

Devices Dalian 116024 Peoples R China;

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原文格式 PDF
正文语种 eng
中图分类高分子化合物工业（高聚物工业）;
关键词
composites; rheology; sensors and actuators; viscosity and viscoelasticity;

机译：复合材料;流变学;传感器和执行器;粘度和粘弹性;

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Effect of electric field on storage modulus of dielectric composites

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