喷涂和刷涂对预涂卷材修补再涂装的试验研究

Research and Experiment of Recoating Precoated Coil by Spraying & Brushing

预涂卷材在加工及使用过程中涂层局部剥落、损坏是不可避免的,因此其维护与再涂装是非常必要的。通过对预涂卷材表面进行简单的机械去除浮锈和有机试剂擦拭除油的前处理,采用7种常用涂料对已被破坏的卷材表面喷涂和刷涂再涂装,测试了2种涂装方法下漆膜性能,分析并得到了这7种涂料在预涂卷材再涂装时的可行性和适用场合,所得实验结果对实际应用具有一定的参考价值。

Precoated coil coating breaking is unavoidable in the processing and using, hence preserving and recoating are very necessary. By applying pretreatment of removing rust with mechanical method and degreasing oil with organic solvents, seven common coatings were used to recoat with spraying and brushing after pretreatment on broken surface. The film properties of each type coating was determined. It is tound out the possibility and application-environment of these coatings which recoated on the pre-coated coil. The resultant has some reference value to the actual applications.