纳米BN-环氧树脂高导热绝缘复合材料.pptx

Highly thermally conductive insulating polymer composites based on BN nanoparticles————华桂祥Highly powered electronicintel Core i7Extensive applicationsPower~88W30~100WElectronic packaging technologyMCM/SiPBGA/CSPPGA/BGA05’s00’sminiaturization轻薄化高性能化多功能化高可靠性低成本QFP90’sDIP80’s60-70’SElectronic packaging technologyPolymer matrix and their low thermal conductivityMaterialsThermal conductivity(W/mK)Polyethylene0.42-0.51Polypropylene0.1-0.22Polystyrene0.14-0.17Metals~400(copper)Ceramics36(Al2O3);＞100(AlN)Great processibilityLow costThermal interface materialsPotential thermally conductive fibbersThermal conductivity of polymer and FillersFillersThermal conductivity(W/mK)Micro size Al2O336Micro size Si3N445Micro size AlN60-320Micro size h-BN60BN nanotube3000(theory) 200-300(experiment)BN nanosheet100-1000AlN,Al2O3Si3N4 ect,nanowireBranch,networkNew generation thermally conductive insulating fillers Conventional FillersDecent high thermal conductivityCheap and easy fabricationLow aspect ratio（纵横比）Low effeciency New generation fillersHigh aspect ratioUltra-high thermal conductivity Specially designed structureThermal conductivity and Mechanical properites of h-BN particleHigh thermal conductivity good mechanical propertiesPoor thermal conductivity and mechanical propertiesh-BN particleThermal conductivity and Mechanical properites of BN nanotubeHigh thermal conductivity good mechanical propertiesBN nanotubeThermal conductivity and Mechanical properites of BN nanosheetsHigh thermal conductivity Good mechanical propertiesBN nanosheetsThermal conductivity and Mechanical properites of BN nanosheetsHigh thermal conductivity BN nanosheetsSynthesis Methods of BN nanotubesMethodsSourcesProductsyield`PurityArc dischargeon boride electrodeW-BHfB2BN-NiTubes＜200nm+WTubes＜700nm+HfTubes＜100nm+NilowimpureLaser heatingHigh pressurec-BNB-Li-N2Tubes＜30nm,shortTubes＜30nm+LiLowpureImpureTemplate synthesisCNTAl2O3Tubes＜100nm+CTubes＜100nm+Al2O3Low Impure CVD(chemical vapor deposition)B-C-N-OB3