This paper attempts to reveal the dielectric properties, breakdown properties, surface charge decay, and conductivity properties of copper-calcium titanate (CaCu3Ti4Oi2, abbreviated as CCTO)/EPDM composites. The CCTO/EPDM composites were prepared using high purity oxides of CuO, CaCO3 and TiO2 and mechanical blending with EPDM. The experiments have demonstrated that the addition of CCTO increases the dielectric constant in accordance with the internal barrier capacitance model and the Clausius-Mossotti theory. The breakdown field intensity increased to 112 kV/mm with 10 wt% CCTO but then decreased with increasing CCTO. A small amount of CCTO was noticed to accelerate the dissipation of surface charge. In addition, a field-dependent conductivity became evident at a high CCTO content.

中文翻译：

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电缆附件用CaCu3Ti4O12-EPDM电气性能


本文试图揭示铜钛酸钙（CaCu3Ti4Oi2，简称CCTO）/EPDM复合材料的介电性能、击穿性能、表面电荷衰减和导电性能。 CCTO/EPDM 复合材料采用高纯度的 CuO、CaCO3 和 TiO2 氧化物并与 EPDM 机械共混制备。实验证明，根据内部势垒电容模型和克劳修斯-莫索蒂理论，CCTO的添加增加了介电常数。当 CCTO 浓度为 10 wt% 时，击穿场强增加至 112 kV/mm，但随后随着 CCTO 的增加而降低。少量的 CCTO 被发现可以加速表面电荷的消散。此外，在高 CCTO 含量下，场依赖性电导率变得明显。