高校化学工程学报2018，Vol.32Issue(1)：101-107,7.DOI:10.3969/j.issn.1003-9015.2018.01.014
聚合物涂层液固化过程中溶剂扩散的数值模型
Numerical Simulation on Solvent Diffusion during Polymeric Coating Curing Processes
摘要
Abstract
Numerical models of solvent diffusion during polymer coating solidification can provide guidance for curing condition optimization, coating defect prevention and design of new drying equipment. Mass and heat transfer models for curing processes of polymethyl methacrylate (PMMA)/acetone coating on glass substrate was established based on Fick's second law and Vrentas-Duda free volume theory. The Galerkin finite element method was used to solve model equations. Concentration distribution of acetone and PMMA was obtained during curing, and the validity of the model was verified by Raman spectroscopy. The results show that the model results are in good agreement with the experimental results in the initial curing stage (0~ 700 s), and the relative error is 0.37%~4.5%. The predicted acetone concentration is higher than the experimental value in the later curing stage (844 s~), which indicates that the modeled coating process is slower than the actual diffusion process.关键词
共焦拉曼光谱/聚合物涂层/自由体积理论/传质传热模型/固化过程/丙酮浓度Key words
Raman spectroscopy/thin film polymeric coatings/free volume theory/mass and heat transfer model/curing process/acetone concentration分类
化学化工引用本文复制引用
郑振荣,韩晨晨,张楠楠,赵晓明..聚合物涂层液固化过程中溶剂扩散的数值模型[J].高校化学工程学报,2018,32(1):101-107,7.基金项目
国家自然科学基金(51206122) （51206122）
天津科委自然科学基金(17JCTPJC47800). （17JCTPJC47800）
