阻燃PC/ABS的热降解动力学  

Thermal Clegeadation Kinetics of Flame Retarded PC/ABS

作　　者：疏引[1] 韦平[1] 闵峰[1] 王晨[1] 刘青[1] 

机构地区：[1]上海交通大学化学化工学院,上海200240

出　　处：《高分子材料科学与工程》2009年第5期122-124,128,共4页Polymer Materials Science & Engineering

基　　金：上海市高分子重点学科建设项目资助(B202)

摘　　要：将自合成的一种新型含磷阻燃剂DPWDF与PC/ABS共混;利用热重分析(TGA)法研究了PC/ABS和阻燃PC/ABS在空气氛围中的热稳定性,利用Flynn-Wall-Ozawa方法研究了PC/ABS及阻燃PC/ABS的热降解动力学。结果表明,阻燃剂降低了PC/ABS初始分解温度(IDT)而提高了它的高温残炭量;在转化率70%以前,阻燃PC/ABS的活化能低于PC/ABS,而在转化率70%以后,阻燃PC/ABS的活化能高于PC/ABS。此实验结果体现了该含磷阻燃剂的凝聚相阻燃机理。Blended a novel self-synthesized phosphorus-containing flame retardant DPWDF with PC/ABS. The thermal stability of PC/ABS and flame retarded PC/ABS was investigated by thermogravimetric analysis （TGA） in air. The thermal degradation kinetics of PC/ABS and flame retarded PC/ABS was studied by Flynn-Wall-Ozawa method. Results show that DPWDF decreases the initiate decomposition temperature of PC/ABS but enhances its char residue at high temperature; the active energy of flame retarded PC/ABS is lower than that of PC/ABS before the conversion of 70 % while it is higher than that of PC/ABS after the conversion of 70 %. It revealed the condensed phase mechanism of flame retardant.

关 键 词：9 10-二氢-9-氧杂-10-磷杂菲-10-氧化物 阻燃 聚碳酸酯/丙烯腈-丁二烯-苯乙烯共聚物 热重分析 动力学 

分 类 号：TQ323.41[化学工程—合成树脂塑料工业]