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。
关键词:
水性聚氨酯,
端胺基,
预聚体扩链
Abstract: The prepolymer dispersion technology was used to prepare a number of aqueous polyurethanes under various conditions. The triketohydrindene hydrate was used as chromogenic agents for chromogenesis of primary amine in the aqueous polyurethane samples, which was detected at 560nm characteristic absorption peak of Uv-vis spectrum for quantitative determination of the amount of primary amine to investigate the chain extension efficiency of diamine under differen technical conditions.
Key words:
aqueous polyurethane,
end amine group,
chain extension of prepolymer
陈 飞, 王武生, 戴家兵, 李维虎, 刘 娜, 张少朋, 马乃宇. 水性聚氨酯端基的测定与预聚体分散扩链反应研究[J]. 涂料工业, 2013, 43(12): 10-13.
Chen Fei, Wang Wusheng, Dai Jiabing, Li Weihu, Liu Na, Zhang Shaopeng, Ma naiyu. Study on End Group Determination of Aqueous Polyurethane (PU) and Prepolymer Dispersing and Chain Extension Reaction[J]. Paint & Coatings Industry, 2013, 43(12): 10-13.