中文摘要：

为了预测二相系涂料成膜过程中溶剂浓度的变化以及最终的成膜质量,建立二相系涂层液溶剂扩散系数的模型以及二相系涂层液干燥过程的模型并进行数值模拟,对于指导涂层的制备及优化设备构造具有非常重要的意义。综述了近年来关于计算溶剂-聚合物涂层液二相系统中溶剂扩散系数的数学模型,以及建立溶剂-聚合物涂层液干燥模型进行数值模拟的进展,并分析了目前关于溶剂扩散系数模型与溶剂-聚合物二相系涂层干燥模型及数值模拟研究中存在的问题。提出在创建二相系涂层干燥模型时,要更加全面地考虑基体与涂层液的性质、涂膜收缩率以及涂膜温度变化等因素,进一步完善涂层干燥模型,提高模拟计算的准确度。对溶剂扩散系数模型与溶剂-聚合物二相系涂层干燥模型,分别提出了有效的实验验证方法,为验证模型的准确性提供了可能。预测溶剂-聚合物涂层液二相系在烘干过程中溶剂的扩散行为,可增强对涂层成膜过程的认识,且有益于节能环保地进行涂层产品的设计及涂层工艺的优化。

英文摘要：

The work aims to predict solvent concentration variation and final film quality in the process of binary system paint film formation by building model of solvent diffusion coefficient of binary coating solution and drying model of binary coating, and performing numerical simulation. Hence the study is of great significance to guide coating preparation process and optimize equipment structure. Mathematical models of calculating solvent diffusion coefficient in the binary solvent-polymer coating solution, and the progress in numerical simulation of binary solvent-polymer coating drying model were reviewed. Problems existing in the model of solvent diffusion coefficient, binary solvent-polymer coating drying model and its numerical simulation were analyzed. In order to further improve the coating drying model and numerical simulation accuracy, properties of substrate and coating solution, film shrinkage, film temperature change and other factors should be considered more comprehen-sively when building the binary solvent-polymer coating drying model. And an effective experimental verification method was proposed for solvent diffusion coefficient model and binary solvent-polymer coating drying model, respectively, making it possible to predict accuracy of the models. Predicting solvent diffusion behavior of binary solvent-polymer system in the process of drying can enhance understanding of film formation process of solvent-polymer coated films, and benefit coating products design and coating process optimization.