Thermal aging of silicone oil aromatic polyamide insulation systems

被引：13

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

页码：578 / 582

页数：5