Thermally stimulated depolarization current and space charge measurements on low‐density polyethylene: Influence of the presence of antioxidant
Thermally stimulated depolarization current and space charge measurements on low‐density polyethylene: Influence of the presence of antioxidant
复制标题
低密度聚乙烯的热刺激去极化电流和空间电荷测量：抗氧化剂存在的影响
DOI：
10.1002/app.27850
复制
发表时间：
2008
影响因子：
3
通讯作者：
J. Guastavino
中科院分区：
文献类型：
--
作者：
M. Tebani;L. Boudou;J. Guastavino
本研究的目的是调查上游的聚合物绝缘子老化和破裂。研究了大功率绝缘电缆用低密度聚乙烯（LDPE）的电气性能和物理化学性能。采用脉冲电声法和热激去极化电流法对不同温度下含和不含抗氧剂的LDPE样品进行了空间电荷测量。仅在抗氧化剂存在下观察到TSDC峰。此外，对于含有抗氧化剂并在50°C下极化的样品，揭示了TSDC异常峰。所有的TSDC峰被解释为陷阱电荷，可以通过测量样品体积内的空间电荷分布来解释。© 2008 Wiley Periodicals，Inc.应用聚合物科学杂志，2008年
The purpose of this study is an investigation upstream of polymer insulator ageing and rupture. We studied the electrical and physicochemical properties of a low-density polyethylene (LDPE) used in high-power insulated cables. Space charge measurements using pulsed electroacoustic method and thermally stimulated depolarization current (TSDC) were carried out on LDPE samples, with and without antioxidant, at different temperatures. TSDC peaks were observed only in the presence of an antioxidant. Furthermore, a TSDC anomalous peak was revealed for the sample containing an antioxidant and polarized at 50°C. All the TSDC peaks are interpreted as trapped charges and can be explained by measuring the space charge distribution within the sample bulk. © 2008 Wiley Periodicals, Inc. J Appl Polym Sci, 2008