将支化环氧液晶接枝到氧化铝纳米颗粒表面，再将其加入到环氧树脂中制备成复合材料，并对环氧液晶接枝氧化铝/环氧树脂复合材料的热性能进行研究。结果表明：加入环氧液晶接枝氧化铝纳米颗粒后，环氧树脂复合材料的导热系数从纯环氧树脂的0.16 W/(m·K)提高到BLCE-g-Al2O3含量为30%时的0.238 W/(m·K)，增加了48.75%；复合材料的初始储能模量比纯环氧树脂的初始储能模量提高了181 MPa，玻璃化转变温度提高了24℃。随着Al2O3填充量的增加，复合材料的热膨胀系数逐渐减小。
Alumina nanoparticles were grafted by branched liquid crystal epoxy (BLCE-g-Al2O3), and BLCE-g-Al2O3/EP composites were prepared through adding the BLCE-g-Al2O3 into epoxy matrix, and then their thermal properties were investigated. The results show that the thermal conductivity of the com-posites increases from 0.16 W/(m·K) of pure epoxy resin to 0.238 W/(m·K) with 30% of BLCE-g-Al2O3 content, and the thermal conductivity increases by 48.75%. The storage modulus and glass transition temperature of the epoxy composites increase by 181 MPa and 24℃, respectively. With the increase of BLCE-g-Al2O3 content, the thermal expansion coefficient of the epoxy composites decreases.
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