摘要
简要介绍了漆膜附着的基本原理,探讨了影响聚氨酯涂料与环氧底漆涂层间附着的因素,通过对底涂层细致打磨后罩面漆,控制涂装间隔时间在12 h内,控制底涂层烘烤温度及时间在60℃、2h内,控制底漆固化剂与环氧树脂当量比为0.9~1.05且面漆-NCO与-OH当量比在1.05~1.15范围内,以及底面选择合适助剂等,能显著改善涂层间附着不良的问题.
The basic principle of film adhesion is briefly introduced,and the influence factors of adhesion between polyurethane paint and epoxy primer are discussed.Through carefully polishing primer,the control of coating interval time in 12 h,the control of primer baking temperature and time at 60 ℃ and 2 h,controlling the equivalent ratio of primer curing agent and epoxy resin in the range of 0.9 to 1.05 and the-NCO and-OH equivalent ratio of fi-nish in the range of 1.05 to 1.15,and primer and finish selecting the appropriate additives,etc.,can significantly improve the problem of poor interlayer adhesion.
关键词
环氧底漆
聚氨酯涂料
层间附着
polyurethane paint
epoxy primer
interlayer adhesion