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A Baseline Model for the Simulation of Polyurethane Foams via the Population Balance Equation

机译:通过人口平衡方程模拟聚氨酯泡沫的基准模型

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摘要

In this work, a novel approach, based on the population balance equation (PBE), is presented and applied for the first time to the simulation of expanding polyurethane foams. The solution of the PBE allows to determine the evolution of the bubble size distribution (BSD) of the foam, which in turn defines the mechanical and thermal properties. The approach includes a kinetic model for the polymerization and blowing reactions, accounts for the presence of a physical blowing and for the total energy balance. Model predictions are compared with experiments from the literature for 12 different chemical recipes, highlighting acceptable agreement.
机译:在这项工作中,提出了一种基于人口平衡方程(PBE)的新颖方法,并将其首次应用于膨胀聚氨酯泡沫的模拟。 PBE的解决方案可以确定泡沫的气泡尺寸分布(BSD)的演变,进而确定了机械和热性能。该方法包括用于聚合和发泡反应的动力学模型,说明物理发泡的存在和总能量平衡。模型预测与文献针对12种不同化学配方的实验进行了比较,突出了可以接受的一致性。

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