干式变压器用高导热抗开裂环氧浇注料  

High Thermal Conductive and Anti-Cracking Epoxy Resin Casting Material for Dry-type Transformer

作　　者：曾柏顺[1] 饶保林[1] 韦衍乐[1] 梁金兴[1] 虞锦洪[1] 

机构地区：[1]桂林理工大学有色金属及材料加工新技术教育部重点实验室,广西桂林541004

出　　处：《绝缘材料》2013年第2期7-10,共4页Insulating Materials

基　　金：国家自然科学基金项目(51067003)

摘　　要：采用氧化铝填料并以环氧-芳香胺为基体树脂制备了一种干式变压器用环氧浇注料,并对其性能与环氧酸酐-硅微粉浇注料进行对比分析。结果表明:经优化后其固化物的性能优于环氧酸酐-硅微粉浇注料的性能,其中导热系数为1.44 W/(m·K),螺栓螺母嵌件试样经-30～160℃冷热冲击10次不开裂,热变形温度为140℃,弯曲强度为190 MPa,拉伸强度为96 MPa,冲击强度为22 kJ/m2。An epoxy resin casting material for dry-type transformer was prepared by using aluminum ox- ide powder as filler and epoxy-aromatic amine as matrix resin, and its properties were compared with that of epoxy anhydride-silicone powder casting material. The results show that the properties of the cur- ing material after modification are better than that of the epoxy anhydride-silicone powder casting materi- al. The thermal conductivity of the modified curing material is 1.44 W/（m. K）. No crack appears in the samples with embedded steel bolt and nut under tortion temperature is 140℃, bending strength strength is 22 kJ/m2. -30-160 ℃ heat-cool shock for ten times. Its heat dis- is 190 MPa, tensile strength is 96 MPa, and impact

关 键 词：环氧浇注料 环氧灌封料 导热系数 抗开裂 

分 类 号：TM215[一般工业技术—材料科学与工程]