Abstract There have been investigated dielectric properties of PP + ZrO2 based nanocomposites after exposure to an external electric field. It is shown that before E = 10 ·106 kV/m the dielectric constant (ε’), dielectric-loss tangent (tgφ) and specific resistance (lgρ) increase but subsequent increase of electrothermal treatment (ETP) brings about the decrease of magnitude like these. It is expected that the decrease of ε’, tgφ and lgρ of nanocompositions with the frequency rise is related to the polarization process retardation. At high-frequency values, the change of given parameters appears to be related to the destruction of hole centers and change of stationary charges in polymer near-surface layers.

中文翻译：

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电热处理对 PP + ZrO2 基聚合物纳米复合材料介电性能的影响

摘要 已经研究了 PP + ZrO2 基纳米复合材料在暴露于外部电场后的介电性能。结果表明，在 E = 10 ·106 kV/m 之前，介电常数 (ε')、介电损耗角正切 (tgφ) 和电阻率 (lgρ) 增加，但随后电热处理 (ETP) 的增加导致幅度减小像这些。预计随着频率升高纳米组合物的ε'、tgφ 和lgρ 的降低与极化过程延迟有关。在高频值下，给定参数的变化似乎与孔中心的破坏和聚合物近表面层中固定电荷的变化有关。