聚氨酯丙烯酸酯涂料的性能研究  

Research on the Properties of Acrylic Polyurethane Coatings

作　　者：石亮 大薮则雄 丁学文 

机构地区：[1]旭化成精细化工(南通)有限公司上海技术服务中心,上海200233 [2]旭化成化学株式会社功能性涂料原料技术开发部,日本川崎2100863

出　　处：《涂料工业》2010年第3期36-40,共5页Paint & Coatings Industry

摘　　要：合成了具有不同玻璃化温度、羟值、酸值和相对分子质量的羟基丙烯酸树脂,并采用HDI多异氰酸酯作为固化剂,研究了羟基丙烯酸树脂对双组分聚氨酯涂料性能的影响,结果表明:玻璃化温度、羟值和酸值对聚氨酯涂料的适用期、干燥时间、漆膜硬度、凝胶率等有较大影响;相对分子质量对这些性能的影响较小;漆膜中苯乙烯含量越高,漆膜耐候性越差。Some hydroxyl acrylic resins with different Tg,hydroxyl value（OHV）,acid value（AV） and Mn were synthesized.The influence of acrylic resins on the performance of 2K acrylic polyurethane coatings with HDI polyisocyanate as hardener were investigated.The results show Tg,OHV and AV have significant influence on pot life,drying time,hardness,gel fraction of the coatings Mn has less influence on these properties.The higher styrene content in the dry film is,the worse the weathering resistance is.

关 键 词：羟基丙烯酸树脂 双组分聚氨酯涂料 多异氰酸酯 苯乙烯含量 

分 类 号：TQ630.7[化学工程—精细化工]