水性聚氨酯端基的测定与预聚体分散扩链反应研究  

Study on End Group Determination of Aqueous Polyurethane( PU)and Prepolymer Dispersing and Chain Extension Reaction

作　　者：陈飞[1] 王武生[1] 戴家兵 李维虎 刘娜[1] 张少朋[1] 马乃宇 

机构地区：[1]安徽大学化学与化工学院,合肥230061 [2]合肥科天化工有限公司,合肥230061

出　　处：《涂料工业》2013年第12期10-13,24,共5页Paint & Coatings Industry

摘　　要：采用预聚体分散工艺,以不同工艺条件合成了一系列水性聚氨酯样品。用茚三酮作为显色剂使水性聚氨酯样品中的伯胺显色,采用可见光谱测定显色样品在560 nm处的特征吸收,定量分析水性聚氨酯样品的伯胺含量,从而研究不同工艺条件下的二胺扩链效率。The prepolymer dispersion technology was used to prepare a number of aqueous lyurethanes under various conditions. The triketohydrindene hydrate was used as chromogen- ic agents for ch detected at 560 romogenesis of primary amine in the aqueous polyurethane samples, which was araeteristic absorption peak of UV - vis spectrum for quantitative detenni- nation of the amount of primary amine to investigate the chain extension efficiency of diamine under differen technical comditionst.

关 键 词：水性聚氨酯 端胺基 预聚体扩链 

分 类 号：TQ630.43[化学工程—精细化工]