石油化工2025，Vol.54Issue(9)：1257-1262,6.DOI:10.3969/j.issn.1000-8144.2025.09.005
二苯甲烷二氨基甲酸甲酯的非等温热分解反应动力学
Non-isothermal thermal decomposition reaction kinetics of methylene diphenyl carbamate
夏海 1胡博文 1李子健 2王庆印 2王公应2
作者信息
- 1. 中国科学院 成都有机化学研究所,四川 成都 610229||中国科学院大学,北京 100049
- 2. 中国科学院 成都有机化学研究所,四川 成都 610229||中国科学院成都有机化学有限公司,四川 成都 610229
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摘要
Abstract
The thermal decomposition process and reaction kinetics of methylene diphenyl carbamate(MDC)were investigated by adopting DSC,TG-DSC,and TG-FTIR.The experimental results indicate that the thermal decomposition process of MDC is divided into two stages.The first stage involves MDC thermal decomposition to produce methylene diphenyl diisocyanate(MDI)with methanol as the gaseous product.The second stage corresponds to MDI's further polymerization reaction,accompanied by the production of CO2.Reaction kinetics analysis of the first thermal decomposition stage reveals activation energy(E)is 111.79 kJ/mol and the pre-exponential factor(A)is 1011.72 s-1.The thermal decomposition model is a phase boundary reaction model with kinetics functions of g(α)=α and f(α)=1,yielding the thermal decomposition equations:dα/dt=Aexp(-E/RT)and f(α)=1011.72exp(-1.344 5×104/T).关键词
二苯甲烷二异氰酸酯/非等温动力学/机理Key words
methylene diphenyl diisocyanate/non-isothermal kinetics/mechanism分类
化学化工引用本文复制引用
夏海,胡博文,李子健,王庆印,王公应..二苯甲烷二氨基甲酸甲酯的非等温热分解反应动力学[J].石油化工,2025,54(9):1257-1262,6.
