摘要
采用400目活性硅微粉填充聚醚多元醇增韧环氧树脂体系制备了干式变压器用浇注料,研究了粉体用量对固化物性能的影响。结果表明,粉体质量分数在62.2%左右时,浇注料粘度适中,固化物的导热系数约为0.84 W/(m.K),冲击强度约为15 kJ/m2,热变形温度为110℃。
Epoxy casts filled with 400 mesh coupling silica powder and toughened by polyether polyol for dry-type transformers were prepared.The effects of silica powder amount on the properties of the cured cast were investigated.The results show that,when the amount of powder is about 62.2%,the viscosity of the cast is moderate;and a cured cast with 0.84 W/（m·k） of thermal conductivity,15 kJ/m^2 of impact strength and 110℃ of heat deflection temperature can be obtained.
出处
《绝缘材料》
CAS
北大核心
2010年第1期56-57,共2页
Insulating Materials
基金
广西科学基金项目"高导热绝缘浸渍树脂"(桂科基0832015)
广西科学研究与技术开发计划项目"导热绝缘材料"(桂科能0842003-2)
广西研究生教育创新人才基地项目资助
关键词
干式变压器
环氧浇注料
导热系数
硅微粉
dry-type transformer
epoxy casting material
thermal conductivity
silica powder
