摘要
结合学校化学工程与工艺专业实践教学改革的要求,设计了制备阴离子型水性聚氨酯漆膜的化工综合实验,考察制备过程参数对产物性能的影响。在实验中用激光粒度仪考察聚氨酯分散体的粒径大小与分布,用红外光谱仪测定聚氨酯交联固化后产物的结构。该合成设计克服了传统溶剂型涂料毒性大、不环保的缺点。实验由学生以小组为单位完成,实验过程不仅涉及相关先修课程的理论知识,也涉及先进的分析检测技术,对培养学生将理论应用于实践的能力、动手能力以及科学素养具有良好的促进作用。
According to the requirements of practical teaching reform,preparation of anionic waterborne polyurethane films and study on the effect of process parameters on product performance was designed for undergraduates major in chemical engineering and technology. Particle size and dispersion of the emulsion was tested by Laser Particle Analyzer and structure of the films was characterized by FT- IR. The synthetic route was more environment- friendly and less toxic than traditional solvent- based synthetic route. Experiments were carried out by students in team. Experimental process involves not only the theoretical knowledge of the pre- related courses,but also the advanced analytical techniques,which have important roles in developing students＇ ability to apply theory to practice,operational ability and scientific literacy.
出处
《实验科学与技术》
2015年第2期3-5,31,共4页
Experiment Science and Technology
基金
陕西省教育厅科研计划基金资助项目(14JK1458)
西安科技大学科研培育基金资助项目(201219)
关键词
实践教学
化工综合实验
水性聚氨酯
激光粒度仪
红外光谱仪
practical teaching
comprehensive chemical engineering experiment
waterborne polyurethane
laser particle analyzer
infrared spectrometer
作者简介
贺新福（1983-），男，博士，讲师，主要从事有机化工方面的研究与教学工作。
