高结晶性聚酯型水性聚氨酯的制备及表征  

PREPARATION AND CHARACTERIZATION OF WATER-BASED POLYURETHANE HAVING HIGH CRYSTALLINITY

作　　者：王正辉[1] 萧翼之[2] 

机构地区：[1]华南农业大学应用化学系,广东广州510642 [2]广州大学化学系,广东广州510405

出　　处：《高分子材料科学与工程》2005年第4期292-294,299,共4页Polymer Materials Science & Engineering

基　　金：广东省教育厅"千百十工程"优秀人才基金资助项目(02047)

摘　　要：由己二酸、己二醇和苯二甲酸磺酸钠缩聚,制得分子量为1425的聚酯多元醇。将自制的聚酯多元醇与六次甲基二异氰酸酯及二羟甲基丙酸等单体在无有机溶剂参与的情况下进行预缩聚,然后将预聚体直接分散于水中,再经乙二胺扩链,制得高分子量、高结晶性聚酯型的水性聚氨酯。用红外光谱、核磁共振氢谱、差示扫描量热以及宽角X射线衍射等手段对聚酯多元醇和聚氨酯的结构进行了表征。Polyol having a molecular weight of 1825 was prepared with the polycondensation of 5-sulfoisophthalic acid monosodium salt, adipic acid and 1,6-hexanediol. A prepolymer was prepared by reacting the obtained polyol with hexanediisocyanate, 1,4-butanediol and 2,2-dimethylol-propionic acid. The prepolymer was dispersed under vigorous agitation by adding water and by chain extension with ethylenediamine. Finally the water-based polyurethane having high molecular weight and high crystallinity was obtained. The obtained polyol and polyurethane were characterized by means of IR spectra, ~1H-NMR spectra, DSC and WAXD.

关 键 词：聚酯多元醇 水基聚氨酯 高结晶性 

分 类 号：TQ323.8[化学工程—合成树脂塑料工业]