Electrical Properties of Epoxy Resin after Thermal Aging under High Humidity

被引：3
|
作者：
Yang, Yan [1 ,3 ]
Ma, Jielin [1 ]
Yap, Malvern [1 ]
Wang, Qi [1 ]
Chern, Wen Kwang [2 ]
Foo, Yi Shyh Eddy [1 ]
Chen, Zhong [4 ]
机构：
[1] Nanyang Technol Univ, Sch Elect & Elect Engn, Singapore, Singapore
[2] Singapore Power Grp, Singapore, Singapore
[3] Southwest Jiaotong Univ, Sch Elect Engn, Chengdu, Peoples R China
[4] Nanyang Technol Univ, Sch Mat Sci & Engn, Singapore, Singapore
来源：
2022 IEEE CONFERENCE ON ELECTRICAL INSULATION AND DIELECTRIC PHENOMENA (IEEE CEIDP 2022) | 2022年
基金：
新加坡国家研究基金会;
关键词：
DIELECTRIC-RELAXATION; WATER-ABSORPTION; STOICHIOMETRY; BEHAVIOR;
D O I：
10.1109/CEIDP55452.2022.9985334
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
The electrical properties of epoxy resin after hygrothermal aging were studied. The volume resistivity, dielectric loss, permittivity, and breakdown strength were measured for samples aged at 95 degrees C at a relative humidity of 95 % for 180 h, 420 h, 660 h, and 1000 h. It was found that the volume resistivity decreases with aging time by an order of magnitude at 1000 h. The dielectric loss and permittivity significantly increase with aging time in the low-frequency range. However, the AC breakdown strength is not significantly changed after the hygrothermal aging. A comparison was made with another group of samples aged at 95 degrees C without moisture control. Through the FTIR (Fourier Transform Infrared Spectroscopy) analysis of the molecular structure variation, the change of electrical properties is attributed to the water absorption, decomposition and hydrolysis of epoxy resin during the hygrothermal aging process.
引用
收藏
页码：171 / 174
页数：4
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