二苯基磷酸阻燃噁唑啉改性的聚丙烯腈的机理  

Mechanism study of diphenylphosphinic acid retardant the oxazoline modified polyacrylonitrile

作　　者：邹志量[1] 夏延致[1] 纪全[1] 全凤玉[1] 郝晓丽[1] 

机构地区：[1]青岛大学纤维新材料与现代纺织国家重点实验室培育基地,山东青岛266071

出　　处：《功能材料》2011年第B06期573-576,共4页Journal of Functional Materials

摘　　要：通过氧指数(LOI)、热重分析(TGA)和锥形量热仪(CONE)研究了二苯基磷酸阻燃改性聚丙烯腈(PMPAN)的燃烧行为。LOI值和CONE的热释放速率(HRR)显示,接上二苯基磷酸后PMPAN的阻燃性得到了很大的提高。TGA测试的数据显示在阴燃或小火的作用下,PMPAN的阻燃属于凝聚相阻燃机理;而CONE测试的质量损失速率(MASS)、CO和CO2的生成速率、平均有效燃烧热(mean EHC)、平均比消光面积(mean SEA)等显示,在外部急剧升温导致的强迫燃烧条件下,PMPAN的阻燃机理为凝聚相和气相协同阻燃。The combustibility of modification polyacrylonitrile retarded by diphenylphosphinic acid was studied by LOI, TGA and CONE. The value of LOI and CONE HRR showed the combustibility of modified PAN make a great progress when the reaction has happened between modified PAN and diphenylphosphinic acid. The test result of TGA showed the combustion mechanism is condensed phase on the condition of smoldering combustion or weak flame; but the test result of CONE, mass loss rate （MASS）, carbon monoxide and carbon dioxide pro duction rate, mean effective heat combustion（mean EHC）, mean specific extinction area（mean SEA） and so on showed the combustion mechanism of PMPAN is synergy of condensed phase and vapour phase under the condi- tion of that the temperature of outer environment is rapidly increasing from the forced combustion.

关 键 词：聚丙烯腈 改性 阻燃 协同 凝聚相 

分 类 号：O632.62[理学—高分子化学]