关键词: 碳氢覆铜板, 导热系数, 氧化铝

Abstract: Alumina is a thermally conductive filler with excellent performance. Usually, aluminum oxide is mixed with other ceramic fillers and added into hydrocarbon composite resin to prepare hydrocarbon resin copper clad plate with high thermal conductivity. It is found that the thermal conductivity of hydrocarbon high-frequency copper clad laminates mainly depends on the particle size and particle shape of alumina. In the case of the same amount of alumina, the thermal conductivity of angular alumina with D50 particle size 5μm is better than that of spherical alumina with D50 particle size 10μm.Through the mixture of spherical alumina and angular alumina in equal proportion, the hydrocarbon composite obtained had the best thermal conductivity [0.73 W/(m·K)], low dielectric loss (0.0038) and extremely low water absorption (0.065%).

Key words: hydrocarbon copper clad laminate, thermal conductivity, alumina