首先通过壬二酸和双(对-羧苯基)苯基氧化膦直接缩聚反应得到半芳香聚酰胺(PA),采用溶液共混方法,以多壁碳纳米管(CNTs)增强PA得到新型纳米复合材料。通过TG-DSC和微尺度燃烧量热法探讨CNTs对复合材料的热性能和可燃性能的影响。当CNT添加量为5%时复合材料的失重率比纯PA提高5%,热分解温度提高70℃。与纯PA相比,复合材料的热释放速率降低,这表明CNTs能提高PA的阻燃性。 Firstly, semi-aromatic polyamides (PA) were obtained by direct polycondensation of azelaic acid and bis (p-carboxyphenyl) phenylphosphine oxide. The PA nanofibers were reinforced by multi-walled carbon nanotubes Composites. The effects of CNTs on the thermal and flammable properties of the composites were investigated by TG-DSC and microscale calorimetry. When CNT content is 5%, the weight loss rate of the composites is increased by 5% and the thermal decomposition temperature is increased by 70 ℃. Compared with pure PA, the heat release rate of the composites decreased, indicating that CNTs can improve the flame retardancy of PA.