氧化铋对环状膦酸酯阻燃棉织物的协效阻燃抑烟作用  

The Synergistic Effect of Bismuth Oxide on Flame Retardancy and Smoke Suppression of the Cotton Fabric Flame-retarded with Cyclic Phosphonate

作　　者：孙才英[1] 王红[1] 董春梅[1] 

机构地区：[1]东北林业大学化学系黑龙江省高校阻燃新材料重点实验室,黑龙江哈尔滨150040

出　　处：《精细化工》2011年第12期1213-1217,1243,共6页Fine Chemicals

摘　　要：通过阻燃性能测试、热重分析、锥形量热分析等研究手段,考察了氧化铋对环状膦酸酯阻燃棉织物的阻燃抑烟协效作用。结果发现,在阻燃整理剂中添加0.4 g/L的氧化铋,可以使阻燃棉布的极限氧指数从43%提高到52%;损毁炭长缩短到5 cm,垂直燃烧达到B1级;而对断裂强度影响不大。热重分析表明,氧化铋的加入进一步降低了阻燃棉织物的初始分解温度和最大热解速率,500℃时的成炭量有所增加;扫描电镜显示,添加氧化铋后,棉织物燃烧成炭更致密;氧化铋具有明显的抗燃烧变形能力;锥形量热测试表明,氧化铋的添加不仅降低了阻燃棉织物的总热释放速率,而且使阻燃棉织物的总烟释放量降低了60%。The synergistic effect of bismuth oxide on flame retardancy and smoke suppression of the cotton fabric flame-retarded with cyclic phosphonate ester MCPPE was discussed in this paper. The results show that the LOI of the cotton fabric flame-retarded with MCPPE increased from 43% to 52% when 0. 4 g/L bismuth oxide was added in MCPPE flame retardant finishing agent. Damaged carbon length shortened to 5 cm, and vertical flame reached Bl level. Yet for breaking strength the influence was not so significant. Thermogravimetric analysis shows that bismuth oxide further reduced the initial decomposition temperature and maximum pyrolysis temperature. SEM shows that the char of the burned cotton was denser after adding bismuth oxide and bismuth oxide had obvious resistance to deformation. Cone test shows that bismuth oxide not only reduced the total heat release rate of flame retarded cotton fabrics but also lowered the total smoke yield by 60%.

关 键 词：环状膦酸酯MCPPE 氧化铋 阻燃抑烟 协效 纺织染整助剂 

分 类 号：TQ314.248[化学工程—高聚物工业]