溴化聚苯乙烯协同三氧化二锑阻燃PA66热分解动力学研究  

STUDY ON THERMAL DEGRADATION KINETIC OF BROMINATED POLYSTYRENE IN SYNCHRONIZING ANTIMONY TRIOXIDE FLAME-RETARDED PA66

作　　者：徐晓楠[1] 王芳[1] 华菲[1] 

机构地区：[1]中国人民武装警察部队学院消防工程系,廊坊065000

出　　处：《工程塑料应用》2010年第2期55-58,共4页Engineering Plastics Application

摘　　要：利用热失重分析法(TG)研究了聚酰胺(PA)66及溴化聚苯乙烯(BPS)、BPS协同Sb2O3阻燃PA66在不同升温速率下的热稳定性及热分解动力学,采用Kissinger及Flynn-Wall-Ozawa方法分析了PA66和阻燃PA66的热分解活化能;利用Coats-Redfern方法确定了PA66和阻燃PA66的热分解动力学机理及其模型,得出了聚合物主降解阶段的非等温动力学方程。结果表明,BPS协同Sb2O3阻燃体系阻燃PA66的效果最好,体系的降解模式发生了变化,PA66和BPS阻燃PA66的机理方程为g(α)=-ln(1-α),反应级数n=1,而BPS协同Sb2O3阻燃PA66的机理方程为g(α)=(1-α)-1-1,反应级数n=2。Thermal stability and thermal degradation kinetic under different heating rates of PA66（1#）,PA66 flame-retarded by brominated polystyrene（BPS）（2#） and PA66 flame-retarded by BPS and Sb2O3（3#） were investigated by thermogravimetric analysis（TG）.The thermal degradation activation energies of PA66 and flame-retardant PA66 were analyzed by using Kissinger and Flynn-Wall-Ozawa method.The thermal degradation kinetic mechanism and model of PA66 and flame-retardant PA66 were determined by Coats-Redfern method,then the non-isothermal kinetic equations of major degradation process were educed.The results indicated that flame retardant effect of 3# was best and it′s degradation pattern changed.The mechanism equation of 1#,2# could be expressed as g（α）=-ln（1-α） and the reaction order n was 1,and the mechanism equation of 3# could be expressed as g（α）=（1-α）-1-1,n=2.

关 键 词：溴化聚苯乙烯 聚酰胺 热分解动力学 阻燃机理 

分 类 号：TQ314.248[化学工程—高聚物工业]