Thermal aging of silicone oil aromatic polyamide insulation systems

被引：12
|
作者：
Abe, K [1 ]
Hamaguchi, M
Umemura, T
Umeda, M
机构：
[1] Toshiba Corp, Heavy Apparatus Engn Lab, Mie, Japan
[2] Mie Works, Mie, Japan
来源：
IEEE TRANSACTIONS ON DIELECTRICS AND ELECTRICAL INSULATION | 1998年 / 5卷 / 04期
关键词：
D O I：
10.1109/94.708275
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 thermal degradation behavior of silicone oil/aromatic polyamide insulation system was studied. It was found that the flash and fire points decreased due to the formation of low molecular weight by-products of such cyclic siloxane oligomers as D-3, D-4 and D-5. The gel permiation chromatography (GPC) and high performance liquid chromatography (HPLC) analysis clarified that the depolymerization of siloxane molecules happened during the thermal aging, resulting in the high- and low-molecular by-products formation. The thermal stability index (TGI) index obtained by the thermogravity (TG) measurements and cyclic oligomer detection could be used for the insulation diagnosis.
引用
收藏
页码：578 / 582
页数：5
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