Interfacial effect of acetophenone on high field dielectric characteristics and electrical conduction of polyethylene
Interfacial effect of acetophenone on high field dielectric characteristics and electrical conduction of polyethylene
复制标题
苯乙酮对聚乙烯高场介电特性和导电性能的界面效应
DOI：
10.1109/icsd.1992.225000
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发表时间：
1992
期刊：
影响因子：
--
通讯作者：
M. Kosaki
中科院分区：
文献类型：
--
作者：
M. Nagao;I. Konba;Y. Mizuno;M. Kosaki
实验研究了苯乙酮对低密度聚乙烯(LDPE)高场介电特性和电导的界面效应。结果表明，苯乙酮涂层显著提高了材料的直流传导电流。苯乙酮通过镀金电极的岛状结构渗透到LDPE的表层，改变了表面的电子态，显然增加了电子载体的注入，特别是空穴。在高温高场区，涂有苯乙酮的样品的Tan增量增大。由于这些区域的tan增量通常随频率线性减小，因此，载流子运动引起的直流传导损耗占主导地位。苯乙酮涂层也提高了电极的电容。这可以归因于涂层引起的注入载流子的空间电荷极化，或聚合物基质中渗透的苯乙酮的偶极极化，或者两者兼而有之。
The interfacial effect of acetophenone on high-field dielectric characteristics and electrical conduction in low-density polyethylene (LDPE) has been investigated experimentally. The results show that the DC conduction current is significantly enhanced by the acetophenone coating. The permeation of acetophenone through the island structure of a gold-evaporated electrode onto the surface layer of LDPE modifies surface electronic states, apparently augmenting the injection of electronic carriers, especially holes. Tan delta of acetophenone-coated specimens increases in the high-temperature and high-field regions. Since tan delta in these regions normally decreases linearly with frequency, the dominance of DC conduction loss due to carrier motions is implied. The capacitance is also increased by the acetophenone coating. This can be attributed to the space charge polarization of injected carriers due to the coating, dipolar polarization of permeated acetophenone in polymer matrix, or both.<<ETX>>