摘要： 以异佛尔酮二异氰酸酯(IPDI)、聚氧化丙烯二醇(N-210)、聚氧化乙烯二醇(PEG)等为基本原料，丙烯酸羟乙酯(HEA)为封端剂，合成了非离子型双键封端水性聚氨酯(HPU)自乳化乳液，然后与甲基丙烯酸甲酯(MMA)及丙烯酸丁酯(BA)进行自由基聚合，得到丙烯酸酯改性非离子型水性聚氨酯(PUA)乳液。对这种材料进行了耐水性、粒径及热力学等方面的测试，结果表明:PUA乳液粒子有明显核壳结构，乳液的平均粒径增大;胶膜耐水性随着HPU添加量的提高而降低，胶膜的耐热性有明显提高。

关键词: 非离子, 水性聚氨酯, 丙烯酸酯, 改性

Abstract: A non-ionic waterbome polyurethane(HPU)was synthesized using isophorone diisocyanate(IPDI),polypylene glycol(N-210) and polyethylene glycol (PEG )as the basic materials, and 2-hydroxyethyl acrylate (HEA )as the end capping agent, Which was then polymerized with methyl methacrylate(MMA )and butyl acrylate (BA) monomers by the thermally-initiated free radical polymerization to obtain the title product(PUA). The product(PUA) was characterized by water resistance test, particle size analysis, thermal gravimetric analysis(TGA and differential scanning calorimetry(DSC ). The experiment results showed that PUA displayed a core-shell structure, and the average particle size of PUA became larger;the water resistance of PUA films decreased with increase of HPU content, and the thermal stability of PUA films was improved greatly.

Key words:  non-ionic, waterborne polyurethane, acrylate, modification