材料科学
聚乙烯
电介质
聚合物
电导率
电阻率和电导率
介电常数
电场
低密度聚乙烯
去极化
复合材料
交联聚乙烯
分析化学(期刊)
电气工程
化学
物理
光电子学
有机化学
物理化学
医学
量子力学
内分泌学
工程类
作者
Simone Vincenzo Suraci,Daniele Mariani,Davide Fabiani
出处
期刊:IEEE Access
[Institute of Electrical and Electronics Engineers]
日期:2023-01-01
卷期号:11: 76132-76141
被引量:4
标识
DOI:10.1109/access.2023.3297495
摘要
In this article, the impact of two different antioxidants (Irganox® 1076 and PS802) on the electrical properties of a cross-linked polyethylene (XLPE) matrix is investigated and discussed. Materials were tested by means of dielectric spectroscopy, thermally stimulated depolarization currents (TSDC) and DC conductivity measurements to provide a comprehensive analysis for their applications under AC and DC electric fields. Results reveal that electrical properties are notably modified by the introduction of additives and the amplitude of variation is somehow proportional to the concentration of the additive with respect to the polymer matrix. In particular, TSDC measurements claim that antioxidants introduce deep traps (> 1 eV) inside the base material and the density of these traps increases in accordance with antioxidant concentration. Moreover, due to the polar properties of these species, the complex permittivity raises with respect to base XLPE, and it adequately follows the antioxidant concentration. On the contrary, negligible variations in terms of DC conductivity are recorded.
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