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聚对苯二甲酸乙二醇酯缩聚过程是反应 -传质耦合过程 ,本文利用不同膜厚的静止膜实验考察了PET缩聚过程中传质的影响 ,分析出实验过程脱挥是泡沫脱挥 ,建立了泡沫脱挥时的传质速率方程。
Poly (ethylene terephthalate) polycondensation process is a reaction-mass transfer coupling process. In this paper, different thickness of the static film experiment was used to investigate the influence of mass transfer during the PET polycondensation process. It was analyzed that the devolatilization was the devolatilization, The mass transfer rate equation for the devolatilization of foam was established.