The kinetic study of PMMA isothermal combustion

W.R. Zeng, S.F. Li, Wan Ki Chow

Research output: Journal article publicationJournal articleAcademic research


使用锥形量热仪研究了 3mm厚、10 0× 10 0mm2 的透明聚甲基丙烯酸甲酯 (PMMA)板在不同温度下的燃烧反应 ,采用化学动力学法拟合了PMMA燃烧过程中质量损失率a与时间t的单方程速率模型 .结果显示 ,在PMMA燃烧过程中 ,质量损失速率受产物的解吸附和扩散过程控制 .PMMA在 5 84~ 80 0℃燃烧时 ,合适的反应动力学方程为 [-ln(1-a) ]1/4=Ae-E/RTt ,其中指前因子A约等于 0 .12 39s-1,平均表观活化能E约为2 2 .81kJ/mol,并与温度的变化基本无关 ,计算结果与实验数据吻合较好||The burning behavior of 3 mm-thick transparent PMMA slabs (100×100 mm 2) at different temperatures was studied by using a cone calorimeter. The single equation rate model of mass loss rate a and time t was simulated by using a chemical kinetic method. The result implied that in the process of PMMA burning, the mass loss rate may be controlled by the desorption and diffusion of products. The fitting result suggested that for PMMA burning in the temperature range of 584~800℃, the a vs.t relationship can be described by using the equation as \ 1/4=Ae -E/RTt, thereinto, the average activation energy E and the frequency factor A are about 22.81 kJ/mol and 0.1239 s -1, respectively. The simulation result is almost consistent with the experiment data.
Original languageChinese (Simplified)
Pages (from-to)317-320
Number of pages4
Journal化学物理学报 (Chinese journal of chemical physics)
Issue number4
Publication statusPublished - 2003


  • PMMA
  • Combustion
  • Kinetic

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