【摘要】 用氧指数 (LOI)、FT -IR法测定研究了四溴醚和八溴醚对环氧树脂酸酐固化物阻燃耐热性的影响。结果表明 2种溴醚均能较好地阻燃树脂固化物 ,四溴醚因凝聚相作用 ,阻燃效果比八溴醚好些。样品经 2 0 0℃ /2h处理后LOI值明显提高 ,阻燃化使树脂的耐热性降低 ,这种不利影响 ,四溴醚比八溴醚小。更多还原

【Abstract】 Influences of tetrabromobisphenol-A-bisallyl ether(tetrabromoether) and tetrabromobisphenol-A-bis-2,3-dibromopropylether(octabromoether)on flame-retardancy and thermal stability of epoxy resin cured by acid anhydride were studied by LOI and FT-IR.The results showed that both of them could make epoxy resin flame retard well and tetrabromoether was better than octabromoether.After being heated at 200 ℃ for 2 hrs the LOI of the flame retardant samples increased remarkablely. Thermal stability of cured epoxy resin was lowed by adding bromoethers and the influence of tetrabromoether was smaller than that of octabromoether.更多还原