超低黏度多异氰酸酯三聚体的研究  

Study on Super Low Viscosity Polyisocyanate as Trimer

作　　者：朝比奈芳幸 片川洋德 

机构地区：[1]旭化成化学株式会社功能性涂料技术研发部,日本川崎2100863

出　　处：《涂料工业》2015年第4期10-12,17,共4页Paint & Coatings Industry

摘　　要：以六亚甲基二异氰酸酯(HDI)为原料,从多异氰酸酯的结构出发,研究开发了既拥有3.0平均官能团数又具有超低黏度特性的三聚体型多异氰酸酯,并且对使用多异氰酸酯三聚体的涂料的凝胶率、涂膜硬度、耐候性、耐热性等进行了测定。结果表明:三聚体型聚氨酯结构和平均官能团数对提高低黏度涂料的固化特性、耐候性起着非常重要的作用。超低黏度的三聚体型多异氰酸酯可用于配制高固含量涂料,可改善涂膜的表观。A super low viscosity polyisocyanate as trimer （ DuranateTM TLA） based on hexamethylene diisocyanate （HDI） was prepared. As viewed from the structure of the polyisocyante, the DuranateTM TLA having average number of isocyanate functional group 3 and low viscosity was prepared. The curing performance （e.g., crosslinking density and film hardness） , accelerated weatherability and thermostability of the coatings based on Duranate^TM TLA were investigated. The results showed that the isocyanurate structure and the number of functional groups played important roles in curing performance and weatherability. The DuranateTM TLA with super low viscosity was useful for high solid coatings showing improved appearance.

关 键 词：超低黏度 高固含 多异氰酸酯 

分 类 号：TQ630.493[化学工程—精细化工]