Evaluation Equipment in High-temperature Electrical Insulating Material for Future Energy Supply Systems

研制聚酰亚胺、陶瓷等高温绝缘材料的绝缘性能评价装置，对燃料电池等未来能源系统具有重要意义。本研究的优点是可以同时测量高温绝缘材料电绝缘性能的传导电流、位移电流、空间电荷分布、电场分布。通过对空间电荷分布和短时间内外电路电流的测量，可以对上述性能进行评估。本项目申请者在开展此项研究之前，已经开发出了120℃以下的空间电荷分布技术。在这个项目中，评估设备的基本技术已经在高达350℃的高温下开发出来。用该装置在350℃的高温下观测了聚酰亚胺薄膜中的空间电荷分布和导电电流。结果表明，注入正电荷超过110℃时，注入的正电荷最大可达250℃。认为先进的设备和基本技术对未来的能源供应技术是有益的。

To develop insulation performance evaluation equipment in high-temperature insulating material such as polyimide and ceramics is important for future energy system such as fuel cell. The advantage of this study is to measure simultaneously, conduction current, displacement current, space charge distribution, electric field distribution concerning electric insulation performance of high-temperature insulating material. It can evaluate above performances from measurements of both space charge distribution and the external circuit current in short interval. The technique of space charge distribution under 120℃ has already been developed before beginning of this research by applicant of this project. Elemental technologies for evaluation equipment have been developed in high temperature up to 350℃ in this project. The space charge distributions and conduction current in the polyimide film has been observed in high temperature up to 350℃ by the equipment. From obtained results, it is clear that the injection of positive charges over 110℃, and larger a mount of positive charge were injected up to 250℃. It is considered that developed equipment and elemental technology are useful for future energy supply technology.