从热释放速率、毒性、有害气体浓度、氧指数、烟密度、水平和垂直燃烧性能等方面系统地研究了邻苯二甲腈树脂复合材料的阻燃低毒特性。在辅射强度为50 kW/m2时,邻苯甲腈复合材料的热释放速率为21kW/m2,点燃时间为500 s。同时其氧指数大于70%,烟密度小于20,表明邻苯二甲腈树脂复合材料是一种理想的阻燃低毒复合材料。 The flame retardant and low toxicity properties of phthalonitrile resin composites were systematically studied in terms of heat release rate, toxicity, concentration of harmful gases, oxygen index, smoke density, horizontal and vertical burning properties. At the secondary radiation intensity of 50 kW / m2, the thermal release rate of o-benzonitrile composite was 21 kW / m2 and the ignition time was 500 s. At the same time, the oxygen index is more than 70% and the smoke density is less than 20, indicating that phthalonitrile resin composite is an ideal flame retardant and low toxic composite material.