CAJ | 학술논문

本文针对近年来出现在一些变电站SF6电压、电流互感器的液体硅橡胶绝缘护套出现龟裂老化这一现象，对发生老化的硅橡胶材料进行了性能测试和试验，并利用红外光谱分析、XPS分析、热失重等手段分析了其微观结构和物质组成的变化。研究发现老化后的液体硅橡胶中Si-C、Si-O官能团和Si、C、O元素的相对含量发生了变化，且随着老化程度的增加呈现出较为明显的规律，老化越严重，Si-C键含量越少，C元素的含量越少，O元素含量越多。本文认为，用官能团含量、元素相对含量可以准确地表征液体硅橡胶材料的老化程度。通过对不同老化程度的液体硅橡胶进行的憎水性、耐漏电起痕性能的试验也证实了本文的观点。
본문침대근년래출현재일사변전참SF6전압、전류호감기적액체규상효절연호투출현구렬노화저일현상，대발생노화적규상효재료진행료성능측시화시험，병이용홍외광보분석、XPS분석、열실중등수단분석료기미관결구화물질조성적변화。연구발현노화후적액체규상효중Si-C、Si-O관능단화Si、C、O원소적상대함량발생료변화，차수착노화정도적증가정현출교위명현적규률，노화월엄중，Si-C건함량월소，C원소적함량월소，O원소함량월다。본문인위，용관능단함량、원소상대함량가이준학지표정액체규상효재료적노화정도。통과대불동노화정도적액체규상효진행적증수성、내루전기흔성능적시험야증실료본문적관점。
In recent years, some composite hollow core insulators of current transformers used in China Southern Power Grid have showed different levels of aging and cracking. In this paper, some tests and experiments, including SEM, FTIR and TG analysis, have been done on the aged silicone rubber. It is found that the upper surface of the housing and sheds suffer from more serious degradation than the lower surface. Also, it is found that the structure and functional groups of the aged surface have changed a lot and crystal structure is observed, which may lead to the loss of hydrophobicity and the degradation of tracking performance.