水性聚氨酯的耐水性研究  

Study on Water Resistance of Waterborne Polyurethane

作　　者：赵玉花[1] 

机构地区：[1]山东科技大学材料科学与工程学院,山东青岛266510

出　　处：《化学推进剂与高分子材料》2010年第1期51-54,共4页Chemical Propellants & Polymeric Materials

摘　　要：采用甲苯二异氰酸酯(TDI)、聚丙二醇(PPG)和二羟甲基丙酸(DMPA)为主要合成原料,通过自乳化法合成水性聚氨酯。探讨了水性聚氨酯的配方及反应条件,并研究了环氧树脂、甲基丙烯酸甲酯、有机硅树脂改性水性聚氨酯对其涂膜耐水性的影响。实验结果表明,通过环氧树脂改性的产品吸水率降至7.61%,耐水性较好。Waterborne polyurethanes were synthesized by self-emulsification method with toluene diisocyanate（TDI）, polypropylene glycol（PPG） and dimethylolpropionic acid（DMPA） as main raw materials. The formulation and reaction condi- tions of the waterborne polyurethanes were discussed. Influence of the waterborne polyurethanes modified by epoxy resin, methyl methacrylate and silicone resin on the water resistances of their coating films was investigated. The experiment results show that the water absorption of the product modified by epoxy resin decreases to 7.61%, the water resistance is better.

关 键 词：水性聚氨酯 改性 耐水性 环氧树脂 

分 类 号：TQ323.8[化学工程—合成树脂塑料工业]