热致液晶共聚酯60PHB/PEN的热降解动力学研究——(Ⅰ)非等温热降解动力学  

KINETICS OF THERMAL DEGRADATION OF THERMOTROPIC POLY(p-OXYBENZOATE-co-ETHYLENE 2,6-NAPHTHALATE) BY SINGLE HEATING RATE METHODS

作　　者：张莉[1] 马敬红[1] 梁伯润[1] 余亦华[2] 

机构地区：[1]化学纤维改性及聚合物材料国家重点实验室,东华大学上海200051 [2]光谱学仪波谱学教育部重点实验室,华东师范大学上海200052

出　　处：《高分子材料科学与工程》2005年第5期228-231,共4页Polymer Materials Science & Engineering

摘　　要：在氮气氛中采用热重分析的方法对热致液晶共聚酯60PHB/PEN的热降解动力学进行了研究。采用F riedm an和Chang两种单一加热速率方法对活化能Ea、反应级数n和频率因子Z等降解反应动力学参数进行了分析。讨论了加热速率和计算方法对热稳定性及降解动力学参数的影响。The kinetics of thermal degradation of thermotropic liquid crystalline poly （p-oxybenzoate-co-ethylene 2,6-naphthalate）（PHB/PEN） with the monomer ratio of 60 ： 40 in nitrogen was studied by dynamic thermogravimetry（TG）. The kinetic parameters, including the activation energy E., the reaction order n, and the frequency factor In Z of the degradation reaction for 60PHB/PEN were analyzed by the single heating rate methods of Friedman and Chang. The effects of the heating rate and the calculating method on the thermostability and degradation kinetic parameters were systematically discussed.

关 键 词：热致液晶共聚酯 热降解 动力学 热稳定性 

分 类 号：O631.31[理学—高分子化学]