Preparation and properties of phenolphthalein poly(aryl ether nitrile ketone)/boron nitride thermal conductive composite materials
PEK-CN/BN thermal conductive composites were prepared by powder blending and high temperature molding methods using phenolphthalein poly(aryl ether nitrile ketone)(PEK-CN)as matrix resin and boron nitride(BN)as thermal conductive filler.The effects of BN particle size on the thermal conductivity and thermodynamic properties of PEK-CN/BN composites were investigated.The results showed that the addition of BN could effectively improve the thermal conductivity of PEK-CN/BN composites.The thermal conductivity of the composites firstly decreased and then increased with increasing the BN particle size with 30％mass fraction of BN.With 20 pm particle size of BN,the thermal conductivity was highest to 0.708 W/(m·K),which was 83.3％higher than that of pure PEK-CN.The maximum thermal conductivity of the composite,prepared with 3∶2 mass ratio of BN with particle size of 10 and 2.6 pm,was 0.961 W/(m·K),which was 3.83 times that of pure PEK-CN,suggesting the thermal conductivity of the composite was significantly enhanced.
万方数据
维普
