作　　者： ; ; ; ; ;

机构地区： 华南理工大学化学与化工学院

出　　处： 《华南理工大学学报（自然科学版）》 2006年第8期32-36,共5页

摘　　要： 合成了N-苯基马来酰亚胺、苯乙烯和马来酸酐三元共聚物,采用红外光谱法对其结构进行了表征,并利用TG,DTG和DSC热分析技术对该共聚物的耐热性能及热分解动力学进行了分析,探讨了其热分解机理.结果表明:该共聚物的热分解受单机理控制,初始热分解温度为637K;683K后热分解速率迅速增大,703K时达到最大,在761K时分解基本结束;共聚物在氮气中失重20%和50%时的温度分别为679K和700K,玻璃化转变温度为485 K;根据K issinger法求得非等温条件下共聚物热分解的表观活化能为173.21 kJ/mol,指前因子为3.293 9×1012m in-1,由Crane法求得其反应级数为0.94. N-phenylmaleimide-styrene-maleic anhydride copolymer （NSMA） was synthesized and the structure of the copolymer was characterized using FTIR. The heat resistance and thermal degradation kinetics of the copolymer were then analyzed by means of TG, DTG and DSC techniques, with the corresponding thermal degradation mechaly ends at 761 K, the rate of which rapidly increases with the temperature from 683 to 703 K; （3） the copolymer shows a weight loss of 20% and 50% in N2 respectively at 679 and 700K, and is of a glass transition temperature of 485 K with DSC curve, （4） the apparent activation energy and pre-exponential of NSMA degraded in non-isothermal condition are respectively verified by Kissinger equation as 173.21 kJ/mol and 3. 293 9 × 10^12 min^-1 ; and （5） the reaction order is determined as 0.94 according to the Crane theory.

关 键 词： 三元共聚物 苯基马来酰亚胺 苯乙烯 马来酸酐 热分解 动力学 耐热性

领　　域： [化学工程]