阳离子亲水改性水性聚氨酯分散体  

Cationically Hydrophilic Modification of Water-borne Polyurethane Dispersion

作　　者：朱立华[1] 张剑秋[2] 

机构地区：[1]同济大学材料科学与工程学院,上海200092 [2]上海大学环境与化学工程学院,上海200072

出　　处：《建筑材料学报》2002年第4期405-408,共4页Journal of Building Materials

基　　金：上海市教委自然科学研究资助项目 (2 0 0 0A34)

摘　　要：用聚醚 ,TDI,1 ,4 丁二醇和三乙醇胺制备了水性聚氨酯 ,并引入三乙醇胺作为阳离子亲水基团 ,使PU具有了亲水性 .讨论了合成过程中的一些影响因素和胶乳的稳定性 .结果表明 :三乙醇胺对胶乳的稳定性影响很大 ;胶乳和固化剂 (AQ 1 0 0 )的质量比在 1 0 0∶8到 75∶8之间时 。The preparation of water borne polyurethane from polyether, TDI, 1,4 butanediol and triethanolamine was studied. The water borne polyurethane can be obtained through the introduction of the cationic groups in the polyurethane chain. In this article the factors which have effect on the synthesis of the prepolymer and quality of the PU emulsion are also discussed. The results show that the amount of triethanolamine has a great effect on the stability of the emulsion. If the ratio of the amount of the emulsion to that of the AQ 100 (curing agent) is between 100∶8 and 75∶8, the strength of the adhesion of the polyurethane emulsion is the best.

关 键 词：水性聚氨酯 三乙醇胺 亲水基 

分 类 号：O622[理学—有机化学]