罗珍,陶灿,韩曦曦,鲍俊杰,程芹,黄毅萍,许戈文

• 1:安徽大学 化学化工学院，安徽省绿色高分子重点实验室，安徽 合肥 230601

摘要(Abstract)：

以聚己二酸1，4-丁二醇酯二醇（PBA）为软段，以异氟尔酮二异氰酸酯（IPDI）、2，2-二羟甲基丙酸（DMPA）、一缩二乙二醇（DEG）、水为硬段合成了一系列水性聚氨酯（WPUs），探讨了水加入量对WPUs性能的影响。通过傅里叶变换红外光谱测试（FT-IR）、粒径测试、凝胶渗透色谱测试（GPC）、差示扫描量热测试（DSC）、X-射线衍射测试（XRD）、热重测试（TGA）、力学性能测试等对其结构和性能进行表征。通过红外曲线拟合结果、DSC和XRD测试结果证实，随着加入体系中水量的增加，氢键化N-H伸缩振动峰强度增加，WPUs结晶度降低。随着水量的增加，乳液平均粒径增大且分布变宽，同时WPUs的分子量及分子量分布系数逐渐增加；胶膜的拉伸强度和断裂伸长率均呈现先增大后减小的趋势，T型剥离强度显示同样的趋势。力学性能测试结果表明，当水加入量为0.94%（wt）时，胶膜的力学性能最佳，拉伸强度达36.7 MPa，断裂伸长率达1026.5%；当水加入量为0.74%（wt）时，水性聚氨酯的T型剥离强度达到最大值，为1.9 N×cm^-1。

关键词(KeyWords)： 水性聚氨酯;脲基甲酸酯;氢键;聚集态;粘接

Abstract:

Keywords:

基金项目(Foundation):

作者(Author): 罗珍,陶灿,韩曦曦,鲍俊杰,程芹,黄毅萍,许戈文

DOI: 10.3969/j.issn.1003-9015.2017.03.019

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