Several authors have suggested that one of the main differences between conventional insulating liquids and nanodielectric fluids is the behavior of the water in the nanodielectric fluid. It has been reported that the impact of water on the dielectric strength is reduced when nanoparticles are dispersed in the fluid, and that nanodielectric fluids present higher breakdown voltage values than the base liquids under similar moisture content. The second part of this two-part paper analyzes the effect of the presence of water on the AC breakdown voltage of several nanodielectric fluids prepared from mineral oil and Fe3O4 nanoparticles in different concentrations. The fluids were conditioned to a range of moisture contents and tested under different conditions. An exhaustive measuring campaign was carried out that was completed with a non-parametric and a parametric statistical analysis of the results. As will be shown in the paper, an increase on the solubility of nanodielectric fluids has been observed which is related with the enhancement of the breakdown voltage of these liquids. The evolution of the breakdown voltage was analyzed both for fluids with similar absolute moisture contents and also for fluids with similar relative saturation conditions.

中文翻译：

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Fe3O4 基纳米介电流体的交流击穿电压。第 2 部分：分析高水分含量的流体

几位作者提出，传统绝缘液体和纳米介电流体之间的主要区别之一是纳米介电流体中水的行为。据报道，当纳米粒子分散在流体中时，水对介电强度的影响会降低，并且纳米介电流体在相似的水分含量下比基液表现出更高的击穿电压值。这篇由两部分组成的论文的第二部分分析了水的存在对由不同浓度的矿物油和 Fe3O4 纳米颗粒制备的几种纳米介电流体的交流击穿电压的影响。将流体调节到一定范围的水分含量并在不同条件下进行测试。进行了详尽的测量活动，并完成了对结果的非参数和参数统计分析。正如论文中所示，已经观察到纳米介电流体溶解度的增加，这与这些液体的击穿电压的增强有关。分析了具有相似绝对水分含量的流体和具有相似相对饱和条件的流体的击穿电压的演变。