文献类型：期刊文献

中文题名：固体热分解动力学的热分析法研究

英文题名：KINETICS OF THERMAL DECOMPOSITION OF SOLID BY THERMAL ANALYSIS

作者：冯仰婕[1];史永强[1];何东明[1];邹文樵[1]

机构：[1]华东理工大学化学系

年份：1997

卷号：13

期号：2

起止页码：30

中文期刊名：高分子材料科学与工程

外文期刊名：Polymer Materials Science & Engineering

收录：CSTPCD;;EI(收录号：1997123977993);Scopus;北大核心:【北大核心1996】；CSCD:【CSCD2011_2012】；

语种：中文

中文关键词：热分析;动力学;聚丙烯;固体;热分解

外文关键词：thermal degradation, kinetics, polypropylene

摘要：以热分析法（ＴＧ、ＤＴＧ）为手段，对固态物质（聚丙烯（ＰＰ））在不同升温速率（５，１０，１５，２０℃／ｍｉｎ）下的热降解动力学进行了研究。用Ｓｅｓｔａｋ复杂机制进行非线性拟合处理，得到了聚丙烯降解反应在不同升温速率及不同转化率α下的活化能Ｅ、指前因子Ａ等动力学参数，参数的稳定性和重复性皆较好。活化能Ｅ＝１０５．４０±０．５ｋＪ／ｍｏｌ，与文献值相符，与反应机制有关的动力学参数ｍ、ｎ和ｐ分别为６．２１２８、７．６８１９和８．０２３８。
The thermal decomposition of solid (polypropylene) was studied by using the thermal gravimetric analysis (TG, DTG), at heating rates of 5, 10, 15, 20 ℃/min at the fluid of N 2. The Sestak′s complex mechanism was used to do curve fitting, the computable results of kinetics of activation energy E and preexponential A have a good stabilities and repeatabilities. The parameters of kinetics have been calculated, the activation energy E =105.40±0.5 kJ/mol, which accords with the literature. The exponential function parameters m, n and P , which reflect the reaction mechanisms, were obtained as 6.2128, 7.6819 and 8.0238, respectively. The superiority of the Sestak′s mechanism to describe the PP′s degradation was also discussed.