高压电器2024，Vol.60Issue(4)：139-145,7.DOI:10.13296/j.1001-1609.hva.2024.04.017
六氟化硫—环氧树脂的热分解研究
Research on Thermal Decomposition of SF6-epoxy Resin
摘要
Abstract
Deeply mining the electrothermal corrosion information of the decomposition products of SF6 improves the accuracy of latent fault diagnosis of GIS equipment.Studying thermal decomposition reaction of the SF6-epoxy system and clarifying the corresponding relationship between carbon-based characteristic decomposition products and degradation of insulating materials can solve the contradiction between the singularity of the characteristic com-ponents and the diversity of their source.In this paper,the thermal decomposition process of SF6-epoxy is systemati-cally measured by synchronous thermogravimetry(TG)/differential scanning calorimetry(DSC),which characteriz-es the temperature range and heat release of three distinct pyrolysis stages.Nine decomposition products of carbon,sulfur and oxygen are identified by the online gas chromatography.According to the panoramic pyrolysis reaction mechanism of the SF6-epoxy system,CO2 is proposed as the characteristic decomposition component to judge the thermal corrosion deterioration of epoxy resin at high temperature(>500℃).CH4 directly responds to the thermal degradation of epoxy insulating materials at 300-500℃.SOF2,H2S and H2 comprehensively determine the ultra-low water concentration of SF6-epoxy system.关键词
环氧树脂/热分解/SF6分解产物/热分析Key words
epoxy resin/thermal decomposition/SF6 decomposition product/thermal analysis引用本文复制引用
杨韧,林德智,杨泓钰,薛军,张晓,张伟强..六氟化硫—环氧树脂的热分解研究[J].高压电器,2024,60(4):139-145,7.基金项目
国网陕西省电力公司科技项目资助项目(5226ky19004D). Project Supported by State Grid Shaanxi Electric Power Company Science and Technology Project(5226ky19004D). （5226ky19004D）
