封闭型聚异氰酸酯水分散体的制备及性能研究  

Study on the Preparation and Properties of Blocked Polyisocyanate Aqueous Dispersion

作　　者：张汉青[1] 许飞[1] 祝宝英[1] 胡中[1] 庄振宇[1] 朱柯[1] 刘明[1] 刘汉功[1] 王艳艳[1] 

机构地区：[1]中海油常州涂料化工研究院有限公司,国家涂料工程技术研究中心,江苏常州213016

出　　处：《上海涂料》2016年第2期14-17,共4页Shanghai Coatings

摘　　要：通过先扩链后封闭的工艺制备封闭型聚异氰酸酯水分散体。分别探讨了封闭剂种类以及封闭反应工艺条件对所制备分散体的影响。采用傅里叶变换红外光谱(FTIR)和差示扫描量热法(DSC)对分散体的结构进行表征,并对所制备封闭型聚异氰酸酯水分散体的物理性能进行了测试。A blocked polyisocyanate aqueous dispersion was prepared by using polyisocyanate through chain extension and then blocking reaction. The effects of blocking agent type and blocking reaction technology condition on the dispersion were investigated. The structure of blocked polyisocyanate aquesous dispersion was characterized by Fourier transform infrared spectroscopy（FTIR）and differential scanning calorimetry（DSC）. Moreover,the physical properties of blocked polyisocyanate aqueous dispersion were also tested.

关 键 词：封闭型聚异氰酸酯水分散体 固化剂 低温解封 

分 类 号：TQ630.4[化学工程—精细化工]