用羟基丙烯酸乳液作为羟基组分与亲水改性多异氰酸酯配漆,制备水性双组分聚氨酯涂料.研究了丙烯酸乳液中乳化剂用量、羟值、酸值、n(-NCO):n(-OH)对漆膜性能的影响,得到了最佳的应用配方:乳化剂用量在1%以下,羟值为100 mgKOH/g,酸值在15 mgKOH/g以下,n(-NCO):n(-OH)=1.5:1.用红外光谱仪(FT-IR)表征固化前后膜的结构,表明大部分乳液聚合物已经与多异氰酸酯反应,但还有部分异氰酸酯没有反应.
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