Dynamic mechanism of breakdown in polypropylene-based nano-dielectric

被引：8
作者：
Chi, X. H. [1 ]
Cheng, L. [1 ]
Liu, W. F. [1 ]
Zhang, X. H. [2 ]
Li, S. T. [1 ]
机构：
[1] Xi An Jiao Tong Univ, State Key Lab Elect Insulat & Power Equipment, Xian 710049, Shaanxi, Peoples R China
[2] Harbin Univ Sci & Technol, Minist Educ, Key Lab Engn Dielect & Its Applicat, Harbin 150080, Heilongjiang, Peoples R China
来源：
AIP ADVANCES | 2019年 / 9卷 / 01期
基金：
中国国家自然科学基金;
关键词：
ACCURATE EXPERIMENTAL-DETERMINATION; WEIBULL SHAPE FACTOR; INTRINSIC BREAKDOWN; CHARGE; MODEL; POLYETHYLENE; DEPENDENCE; BEHAVIOR; FILMS; FIELD;
D O I：
10.1063/1.5062583
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
The dynamic mechanism of breakdown in polypropylene (PP) were represented based on the discharge-avalanche theory. PP is a typical semi-crystalline thermoplastic polymer with low loss and high thermal stability, which had broad application prospects in recyclable and environment-friendly insulation. Dielectric strength was one of the important properties for polymer insulation, hence research of breakdown mechanism was of great significance for insulation reliability increase and advanced materials development. In this paper, the dielectric strength of PP was enhanced by nano-silica filling, and mechanism of enhancement was discussed based on the change of activation energy measured by thermally stimulated depolarization currents (TSDC). (C) 2019 Author(s).
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页数：5
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