水性聚氨酯的合成与改性  

Synthesis and modification of aqueous polyurethane

作　　者：司小燕[1] 郑水蓉[1] 刘喜宗[1] 陈欢庆[1] 

机构地区：[1]西北工业大学理学院应用化学系,陕西西安710072

出　　处：《中国胶粘剂》2007年第10期6-9,共4页China Adhesives

摘　　要：以甲苯二异氰酸酯(TDI)、聚醚二元醇(N220)和二羟甲基丙酸(DMPA)为主要原料,采用三羟甲基丙烷(TMP)进行交联改性合成了水性聚氨酯(WPU),研究了n(-NCO)/n(-OH)、DMPA及TMP对WPU的耐水性、稳定性和力学性能的影响。研究发现,改性后的乳液常温贮存稳定性好,适度交联可提高胶膜的拉伸强度及耐水性。The aqueous polyurethane （WPU）was synthesized as main material from toluene diisocyanate （TDI）,a polyether polyol （N220） and dimethylolpropionic acid （DMPA）,which was modified with trimethylolpropane（TMP）by crosslinking. And studied the effect of n（-NCO）/n（-OH）,DMPA,TMP on water-resistance, stability and mechanical properties. The results showed that modified emulsion was steady at normal temperature, moderation crosslinking increased the tensile strength and water-resistance of film.

关 键 词：水性聚氨酯 交联 性能 

分 类 号：TQ433.432[化学工程]