The effect of triphenyl phosphate (TPP) retardant inhibition on flame propagation over the horizontal surface of polymethyl methacrylate (PMMA) has been studied experimentally and numerically. Regarding the flame spread behavior over the surface of PMMA (pure and inhibited by TPP), the following parameters were measured: thermal decomposition with TG / DTG analyzer, the flame spread rate, the pyrolysis zone length, the mass loss rate and spatial distribution of temperature by thermocouples and species concentration in the gas-phase flame by probing mass spectrometry. The previously developed coupled heat and mass transfer mathematical model describing the feedback interaction between flame and solid fuel, as well as volatilization of pyrolysis products, was modified to resolve the effect of TPP on flame spread by introducing the correcting factor of the gas-phase combustion reaction rate relating to the inhibitor concentration in the solid material. Good agreement between the measured and calculated flame spread parameters (flame spread velocity, mass burn-out rate, pyrolysis zone length), as well as a detailed flame structure (gas phase temperature and species concentration), has been obtained for pure PMMA and PMMA+10%TPP. It has been shown that the proposed approach describes a satisfactory retardant effect of TPP on the flame spread over PMMA surface by inhibiting the gas-phase combustion reaction.

已经通过实验和数值研究了磷酸三苯酯（TPP）阻滞剂对火焰在聚甲基丙烯酸甲酯（PMMA）的水平表面上传播的影响。关于在PMMA表面上的火焰蔓延行为（纯TPP并被TPP抑制），测量了以下参数：TG / DTG分析仪的热分解，火焰蔓延速率，热解区长度，质量损失率和空间分布通过热电偶测得的温度以及通过质谱探测气相火焰中的物质浓度。先前开发的耦合传热和传质的数学模型描述了火焰与固体燃料之间的反馈相互作用以及热解产物的挥发，通过引入与固体材料中抑制剂浓度有关的气相燃烧反应速率校正因子，对分子式进行了修改，以解决TPP对火焰蔓延的影响。对于纯PMMA和PMMA，已获得测量和计算的火焰扩散参数（火焰扩散速度，质量燃尽率，热解区长度）以及详细的火焰结构（气相温度和物质浓度）之间的良好一致性+ 10％TPP。已经表明，提出的方法描述了TPP通过抑制气相燃烧反应而对散布在PMMA表面上的火焰具有令人满意的阻燃效果。对于纯PMMA和PMMA，已获得测量和计算的火焰扩散参数（火焰扩散速度，质量燃尽率，热解区长度）以及详细的火焰结构（气相温度和物质浓度）之间的良好一致性+ 10％TPP。已经表明，提出的方法描述了TPP通过抑制气相燃烧反应而对散布在PMMA表面上的火焰具有令人满意的阻燃效果。对于纯PMMA和PMMA，已获得测量和计算的火焰扩散参数（火焰扩散速度，质量燃尽率，热解区长度）以及详细的火焰结构（气相温度和物质浓度）之间的良好一致性+ 10％TPP。已经表明，所提出的方法描述了TPP通过抑制气相燃烧反应而对散布在PMMA表面上的火焰具有令人满意的阻燃效果。