摘要
以氮化铝为导热填料,二甲基硅氧烷、羟基硅氧烷或苯甲基硅氧烷为基体,采用高速搅拌-真空脱泡法成功制备高导热硅酯复合材料。研究了填料表面状态、用量和基体类型对导热硅酯导热性的影响。结果表明,较优配方为300份接枝改性的氮化铝(粒径3~5μm)+100份PMX-200二甲基硅氧烷。采用该配方所得导热硅酯复合材料的导热系数为1.28 W/(m·K),耐温性能优良,氮化铝颗粒在其中分散均匀。
Silicone composites with high thermal conductivity were prepared based on dimethyl siloxane, hydroxyl siloxane or phenylmethyl siloxane with aluminum nitride as filler by high-speed stirring followed by defoaming in vacuum. The effects of surface state and dosage of filler and type of siloxane on thermal conductivity of silicone were studied. The results showed that the optimal dosage of grafted aluminum nitride particles(3-5 μm in diameter) is 300 parts per hundred of PMX-200 dimethyl siloxane. The thermally conductive silicone composite prepared thereby features a thermal conductivity coefficient of 1.28 W/(m·K) and good thermal resistance with uniform distribution of aluminum nitride particles inside.
作者
张崇印
王瑛
胡励
林连镔
李纪鹏
高缘
吴新锋
ZHANG Chong-yin;WANG Ying;HU Li;LIN Lian-bin;LI Ji-peng;GAO Yuan;WU Xin-feng(Shanghai Engineering Research Center of Specialized Polymer Materials for Aerospace,Shanghai Aerospace Equipments Manufacturer Co.,Ltd.,Shanghai 200245,China)
出处
《电镀与涂饰》
CAS
CSCD
北大核心
2019年第24期1337-1341,共5页
Electroplating & Finishing
基金
中国博士后科学基金（2017M611757）
上海市科技人才计划项目（19QB1402200）
上海市科委“科技创新行动计划”地方院校能力建设项目（19040501800）
关键词
硅酯
二甲基硅氧烷
氮化铝
复合材料
分散
导热系数
silicone
dimethyl siloxane
aluminum nitride
composite
dispersion
thermal conductivity coefficient
