纳米Al_2O_3含量对环氧多胶粉云母带性能的影响  

Effect of Nano-Al_2O_3 Content on Performance of Epoxy Resin-rich Mica Tape

作　　者：周尤爽 饶保林[1] 虞锦洪[1,2] 闻全越 

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 [2]中国科学院宁波材料技术与工程研究所海洋新材料与应用技术重点实验室,浙江宁波315201

出　　处：《绝缘材料》2016年第10期29-34,共6页Insulating Materials

基　　金：国家自然科学基金项目(51367007;51303034)

摘　　要：采用纳米Al_2O_3对环氧多胶粉云母带进行纳米改性研究,探讨了纳米Al_2O_3含量对云母带常规性能、电寿命和导热系数的影响。结果表明:纳米Al_2O_3在粘合剂中的含量不超过13.5%时,云母带的常规性能可以满足现行国家标准和应用工艺的要求;随纳米Al_2O_3含量增大,纳米复合主绝缘材料的冲击强度有所下降,但155℃下的弯曲强度则呈增大趋势;纳米Al_2O_3含量约为5%时,主绝缘材料的电气强度最高,相比无纳米改性的复合材料提高了15%;纳米Al_2O_3含量约为13.5%时,主绝缘材料的电寿命最长,约为无纳米Al_2O_3复合材料的28倍,此时在105℃下的导热系数为0.34 W/(m·K)。Epoxy resin-rich mica tape was modified by nano-A1203, and the effect of nano-ALO3 content on its general performance, electric lifetime, and thermal conductivity was discussed. The results show that the general performance of mica tape can reach the technical requirements of national standard and application process when the nano-A1203 content in adhesive is not greater than 13.5%. With the increase of nano Al：O3 content in adhesive, the impact strength of the nanocomposite main insulation material re- duces, but the flexural strength at 155 ℃ increases. When the nano-A1203 content in adhesive is about 5%, the electric strength of the main insulation material reaches the maximum, which is 15% higher than that of the material without nano-Al2O3. When the nano-A1203 content in adhesive is about 13.5%, the electric lifetime of the main insulation material reaches the maximum, which is about 28times as large as the material without nano-A1203, and the thermal conductivity at 155℃ is 0.34 W/（m-K）.

关 键 词：纳米复合 多胶云母带 纳米AL2O3 高压电机 主绝缘 

分 类 号：TM215.5[一般工业技术—材料科学与工程]