几种复合绝缘材料长期浸水的电气物理特性

The Characteristic of Insulating Materials Immersed in Water

探讨了水对硅橡胶和环氧树脂的憎水性、相对重量、tanδ以及εr的影响。为加速老化过程 ,试品浸入 5 0℃蒸馏水中的试验结果表明 ,长期浸水使憎水性逐渐变差 ,而tanδ和

This paper deals with the influence of water immersion on the hydrophobicity loss, relative weight, tan δ and ε r. In order to accelerate the aging process, all the samples were immersed in distilled water at 50℃. After long time of water immersion, it is shown that the hydrophobicity is lost gradually and tan δ and ε r are changed abruptly. It shows that insulation property is lost.