Here, based on the dielectric response analysis, we report the charge transport dynamics as related to space charge accumulation for three model XLPE composites with 2D platelet silicate fillers. Dynamics of charge transport and the interplay between polarization and space charge are revealed by the equivalent circuit analysis with the Dissado-Hill dielectric response model. In addition to the quasi-DC process, a characteristic dielectric loss peak in the frequency range of 0.1 Hz to the power frequency is observed and attributed to the relaxation of charges trapped by filler-polymer interfaces. It is demonstrated that the physical nature of trapping and transport revealed by parameters extracted from the quasi-DC process and dielectric loss peak can be well correlated to the characteristics of space charge accumulations in the model XLPE composites containing distinctively different 2D platelet fillers.

中文翻译：

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用于HVDC电缆绝缘的带有2D血小板填充剂的XLPE复合材料中的电荷传输动力学和空间电荷积累

在此，基于介电响应分析，我们报告了三种带有二维片状硅酸盐填料的XLPE复合材料与空间电荷积累相关的电荷传输动力学。通过Dissado-Hill介电响应模型的等效电路分析，揭示了电荷传输的动力学以及极化和空间电荷之间的相互作用。除了准直流过程外，在功率频率为0.1 Hz的频率范围内观察到了特征介电损耗峰，这归因于填充剂-聚合物界面捕获的电荷的松弛。