This article presents the possibility of extending the service life of XLPE insulation based on high voltage cables by blending the optimum concentration of the aromatic voltage stabilizer. The insulation performance of XLPE is analyzed by adding the 0.5, 1, and 3 wt% of 3‐aminobenzoic acid voltage stabilizer. The investigated insulation properties include the DC step‐by‐step breakdown to estimate the life exponent, space charge, DC conductivity, surface potential decay, dielectric loss, and dielectric constant measurements. The results illustrate that the 1 wt% voltage stabilizer addition increases the life exponent from 10 up to 15, which is highly suitable for the high voltage cables. Moreover, it exhibits the negligible space charge accumulation and the least electrical field distortion inside the insulation bulk. It also exhibits the lower DC conductivity by one order of magnitude comparing to the pure XLPE. The highest bandgap value of 1 wt% addition further supports its better insulating properties. Furthermore, the dielectric measurements show that the XLPE with 1 wt% voltage stabilizer exhibits the least dielectric constant and dielectric loss. The differential scanning calorimetry and thermogravimetric analysis results show that the thermal properties are significantly improved after the voltage stabilizer addition. POLYM. ENG. SCI., 60:717–731, 2020. © 2020 Society of Plastics Engineers

中文翻译：

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最佳芳烃稳定剂含量可延长聚合物电缆的使用寿命和电绝缘性能

本文提出了通过混合最佳浓度的芳族稳定剂来延长基于高压电缆的XLPE绝缘子使用寿命的可能性。通过添加0.5、1和3 wt％的3-氨基苯甲酸电压稳定剂来分析XLPE的绝缘性能。研究的绝缘特性包括直流逐步击穿，以估计寿命指数，空间电荷，直流电导率，表面电势衰减，介电损耗和介电常数测量值。结果表明，添加1 wt％的稳定剂可使寿命指数从10增加到15，这非常适用于高压电缆。此外，它在绝缘块内部的空间电荷积累微不足道，并且电场失真最小。与纯XLPE相比，它还表现出较低的直流电导率一个数量级。添加1 wt％的最高带隙值进一步支持其更好的绝缘性能。此外，介电测量结果表明，具有1 wt％稳定剂的XLPE表现出最小的介电常数和介电损耗。差示扫描量热法和热重分析结果表明，加入稳定剂后，热性能得到明显改善。POLYM。ENG。SCI。，60：717-731，2020.©2020塑料工程师协会 介电测量表明，具有1 wt％的稳定剂的XLPE表现出最小的介电常数和介电损耗。差示扫描量热法和热重分析结果表明，加入稳定剂后，热性能得到明显改善。POLYM。ENG。SCI。，60：717-731，2020.©2020塑料工程师协会 介电测量表明，具有1 wt％的稳定剂的XLPE表现出最小的介电常数和介电损耗。差示扫描量热法和热重分析结果表明，加入稳定剂后，热性能得到明显改善。POLYM。ENG。SCI。，60：717-731，2020.©2020塑料工程师协会