極低温領域における竹—氷複合系の交流絶縁破壊特性に及ぼす電界方向の影響

抄録

We studied the use of bamboo as a material of low environmental impact. Bamboo is widely distributed in warm climates, naturally decomposes and is characterized by the properties of excellent elasticity and ability to absorb water. We believe that a bamboo-ice composite system can be used as a substitute for glass fiber reinforced plastics (GFRP), which do not naturally decompose, in electrical insulation systems that operate at cryogenic temperature. In this paper, we report the effect of field direction on alternating-current (ac) breakdown properties of the bamboo-ice composite system in liquid nitrogen. The ac breakdown properties of the bamboo-ice composite system show strong anisotropism.