介绍了配制双组分聚氨酯涂料的工艺过程，并通过一系列的对比实验，考察了树脂、固化剂、n_-Nco伽珈H配比、PVC和助剂对涂膜性能的影响，以及涂料的适用期。试验结果表明：羟基丙烯酸树脂BayhydrolAXP2695和固化剂BayhydurXP2655配用，n-Nco-oH为1．4，PVC为15％，润湿分散剂TG270和TG755配用，流平剂TG700和BYK380N配用，可获得综合性能优异的涂膜，满足汽车面漆的性能要求；涂料的适用期约为4h。%The preparation process of two-component polyurethane coatings was introduced, and through a series of contrast experiments, the influences of resin, curing agent, n-nco-on, PVC and ad and the pot life of the coatings were inspected. Results showed that it would lead to g performance film, when hydroxyl acrylic resin of Bayhydrol A XP 2695 and curing agent collocated, n-NCO/ n-on was 1.4, PVC was 15%, TG270 and TG755 were used together as and TG700 matched with BYK380N was selected as flatting agent, which could meet the topcoat. And the pot life was approximately 4 hours. es on the film performance, et excellent comprehensive of Bayhydur XP 2655 were wetting-dispersing agents, requirements of automobile topcoat. And the pot life was approximately 4 hours.
展开▼
