PU/P(MMA-EA)互穿网络热分解研究  

Study on Thermal Decomposition Kinetic Parameters of PU/P(MMA-EA) Interpenetrating Polymer

作　　者：刘晓宁[1] 左海丽 朱勇 黄洪勇 张兵 

机构地区：[1]中国人民解放军海军驻上海地区航天系统军事代表室,上海201109 [2]上海航天动力技术研究所,浙江湖州313000

出　　处：《上海航天》2015年第2期45-49,共5页Aerospace Shanghai

摘　　要：用热重(TG)及微商热重(DTG)研究了不同配比PU/P(MMA-EA)互穿体系在氮气气氛、不同升温速率的热分解反应过程。根据PU/P(MMA-EA)热解DTG曲线特点,将其热解过程分为两个阶段,用Kissinger法计算三种试样两个阶段的动力学参数,PU/P(MMA-EA)配比100/0,90/10,70/30在第一阶段活化能分别为114,102,88kJ/mol,在第二阶段活化能分别为153,223,218kJ/mol。用Ozawa法求得各阶段的平均活化能与Kissinger法计算结果一致。用积分法结合34种动力学函数判断该体系热分解的机理函数,并给出了结果。Based on the thermal analysis kinetics, thermogravimetric analysis （ TG ） and derivative thermogravimetry （DTG） were employed to evaluate the thermal decomposition behaviors of PU/P（MMA-EA） in N2 atmosphere in this paper. A peak separation was performed to separate the thermal decomposition of PU/P （MMA-EA） into two stages according to the characteristic of the experimental differential mass loss curve, and the kinetic parameters such as activation energy and pre-exponential were calculated and analyzed with Kissinger method. The activation energy of the first stage of PU/P（MMA-EA）=100/0, 90/10 and 70/30 was 114, 102, 88 kJ/mol,the second stage was 153, 223, 218 kJ/mol respectively. The average activation energy was calculated with Ozawa methods in each decomposition stage was consistent with the result of Kissinger method. Integral method with 34 types of kinetic function was proposed to define the most probable kinetic function, and the analysis results were given out.

关 键 词：非等温热重法 热分解 互穿 

分 类 号：TQ316.6[化学工程—高聚物工业]