阻燃高导热环氧灌封胶的制备与性能研究  

Preparation and Properties of Flame Retardant Epoxy Potting Adhesivewith High Thermal Conductivity

作　　者：井丰喜 刘亚丽[2] 吴斌 陈昊[2] 张春琪 景录如 马俊锋 JING Fengxi;LIU Yali;WU Bin;CHEN Hao;ZHANG Chunqi;JING Luru;MA Junfeng(Suzhou Taihu Electric Advanced Material Co.,Ltd.,Suzhou 215214,China;Machinery Industry Beijing Electrotechnical Institute of Economic Research,Bejing 100070,China)

机构地区：[1]苏州太湖电工新材料股份有限公司,江苏苏州215214 [2]机械工业北京电工技术经济研究所,北京100070

出　　处：《大电机技术》2022年第5期76-82,共7页Large Electric Machine and Hydraulic Turbine

基　　金：江苏省科技成果转化专项资金(BA2018081);苏州市重点研发产业化项目(SGC2020021)。

摘　　要：本文以γ-氨丙基三乙氧基硅烷改性六方氮化硼和球形氧化铝作为复合导热粒子、ETBN(端环氧基液体丁腈橡胶)作为增韧剂、DOPO-BQ(9,10-二氢9-氧-10-磷杂菲-10-氧化物衍生物)作为反应型阻燃剂制备了阻燃高导热环氧灌封胶。研究了导热填料用量、不同导热粒子比例、ETBN及阻燃剂的添加量等因素对灌封胶导热系数、抗弯强度和冲击强度的影响。结果表明,当填料与有机基材质量比为2:1、m(M-BN):m(M-Al_(2)0_(3))=0.25、ETBN与E51环氧树脂质量比为0.15、阻燃剂与有机基材质量比值为0.2时,所制备的阻燃高导热环氧灌封胶具有较好的综合性能,其导热系数达到2.62W/(m.K)、阻燃等级达到V0级、抗弯强度达到116MPa、拉伸剪切强度达到25MPa、冲击强度达到75kJ/m^(2)。In this paper, a kind of flame retardant epoxy potting adhesive with high thermal conductivity was prepared by using γ-aminopropyl triethoxy silane modified hexagonal boron nitride and spherical aluminum oxide as composite thermal conductivity particles, ETBN as toughening agent, and DOPO-BQ as reactive flame retardant. The influence of the amount of thermal conductivity filler, the ratio of thermal conductivity particles, the ratio of ETBN to E51 epoxy resin, and the amount of flame retardant on the thermal conductivity, bending strength and impact strength of the epoxy potting adhesive were studied. The results show that when the weight ratio of filler to organics is 2∶1, the weight ratio of M-BN to M-AlOis 0.25, the weight ratio of ETBN to E51 epoxy resin is 0.15, and the weight ratio of flame retardant to organics is 0.2, the prepared flame retardant and high thermal conductivity epoxy potting adhesive has excellent comprehensive properties, in which the thermal conductivity reaches 2.62 W/(m·K), the flame retardant reaches V0 grade, the bending strength reaches 116 MPa, the tensile shear strength reaches 25 MPa, and the impact strength reaches 75 kJ/m~2.

关 键 词：电气绝缘 环氧灌封胶 导热 阻燃 复合材料 

分 类 号：TM215[一般工业技术—材料科学与工程]