PAMAM树枝状大分子在水性聚氨酯合成中的应用研究  

PAMAM dendritic macromolecules in the application of waterborne polyurethane synthetic study

作　　者：王学川[1,2] 张哲[1] 郭子东[1] 王娜[1] 强涛涛[1,2] 

机构地区：[1]陕西科技大学轻化工助剂化学与技术教育部重点实验室,西安710021 [2]陕西农产品加工技术研究院,西安710021

出　　处：《功能材料》2016年第5期11-17,共7页Journal of Functional Materials

基　　金：国家自然科学基金资助项目(21276151);陕西省科研创新团队资助项目(2012M521733)

摘　　要：由异佛尔酮二异氰酸酯(IPDI)、聚醚多元醇(DL-2000D)、聚酯多元醇(CMA-244),二羟甲基丙酸(DMPA)、1,4-丁二醇、乙二醇合成含异氰酸酯基(—NCO)的聚氨酯预聚体,再令其与整代聚酰胺-胺(PAMAM)接枝,合成不同代数的树枝状水性聚氨酯。用红外光谱(FT-IR)、透射电镜(TEM)、激光粒度分析表征乳液粒径及其分散状态,用原子力显微镜(AFM)、水接触角表征其表观性能,分析胶膜的理化性能。结果表明,由相对分子质量较小的PAMAM(G2)改性所得的水性聚氨酯WPU-G2的水性聚氨酯耐水、耐热性能有了明显提高。The polyurethane prepolymer was prepared by the isophorone diisocyanate （IPDI）, polyether polyol（DL-2000D）, polyester polyol （CMA-244）, 2,2-Dimethylol propionic acid （DMPA）, 1,4-Butylene glycol andethylene glycol. The polyurethane prepolymer was grafted on whole generation of polyamide-amine （PAMAM）,and then a new series of dendritic waterborne polyurethane was synthesized. The products were characterized byFourier transform infrared spectroscopy （FT-IR）, transmission electron microscope （TEM）, laser particle sizeanalysis. Then the apparent performances were analyzed by using atomic force microscope （AFM） and watercontact angle. At last, the physical and chemical properties of the film were studied. The results show that thehigh elasticity characteristics of PAMAM can effectively improve the physical and chemical performance ofwaterborne polyurethane. Comprehensive compare different algebraic PAMAM and the physical properties ofthe modified waterborne polyurethane, the relative molecular mass of smaller PAMAM （G2） modification ofwater-based polyurethane WPU-G2 can obviously improve the aqueous polyurethane water resistant and heat re-sistant performance.

关 键 词：聚酰胺-胺 水性聚氨酯 合成 表征 

分 类 号：TQ323.8[化学工程—合成树脂塑料工业]