环氧树脂/氮化硼/石墨烯纳米片导热复合材料的制备与性能研究  

Preparation and properties study of thermally conductive epoxy/modified boron nitride/graphene nanoplatelets composites

作　　者：陈和祥[1] 赵春宝[1] 徐随春[1] 杨绪杰[2] CHEN Hexiang;ZHAO Chunbao;XU Suichun;YANG Xujie(School of Microelectric Engineering, Nanjing College of Information Technology, Nanjing 210046, China;School of Chemical Engineering, Nanjing University of Science and Technology, Nanjing 210094, China)

机构地区：[1]南京信息职业技术学院微电子学院,南京210046 [2]南京理工大学化工学院,南京210094

出　　处：《功能材料》2017年第12期12064-12068,共5页Journal of Functional Materials

基　　金：江苏省高校自然科学研究面上资助项目(16KJB430034);江苏省"333工程"科研资助项目(BRA2017344);软化学与功能材料教育部重点实验室开放基金资助项目(30916014103)

摘　　要：采用十八烷基三甲基溴化铵(OTAB)改性的氮化硼(BN)微粒和石墨烯纳米片(GNP)为导热填料,制备了系列环氧树脂(EP)/改性BN(BNOTAB)/GNP导热绝缘复合材料,研究了填料的种类和含量对复合材料导热性能、电绝缘性能及热稳定性能的影响。结果表明,经OTAB改性后的BN微粒能比较均匀分散于环氧树脂体系中;当m(BNOTAB)/m(GNP)=6∶4时(填料总含量为10%),复合材料的热导率达到0.48 W/(m·K),较纯环氧树脂材料提高了108.7%,而该复合材料仍保持优异的绝缘性能;TGA与DSC结果显示,BNOTAB/GNP填充微粒的加入可以提高环氧树脂复合材料的热稳定性。A series of thermally conductive and electric insulating epoxy composites filled with boron nitride(BN)modified by octadecyl trimethyl ammonium bromide and graphene nanoplatelets(GNP)were prepared.The effects of modified BN(BNOTAB)and GNP content on thermal conductivity,electric insulation and thermal stability properties of epoxy composite were investigated.The results indicate that the BNOTAB can uniformly disperse into epoxy system.When the mass ratio of BNOTAB/GNP is6:4(total filler content is10%),the thermal conductivity of the composites reached0.48W/(m·K),which is108.7%higher than that of the neat epoxy.Meanwhile,the composite retains excellent electric insulating property.TGA and DSC results show that the addition of BNOTAB/GNP filler particles can improve the thermal stability of epoxy resin composites.

关 键 词：环氧树脂 氮化硼 石墨烯纳米片 导热性能 热稳定性 

分 类 号：TM215[一般工业技术—材料科学与工程] TQ323.5[电气工程—电工理论与新技术]