OALib Journal期刊
ISSN: 2333-9721
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环氧交联改性水性聚氨酯的结构及其性能研究
Keywords: 水性聚氨酯,环氧,改性,自乳化
Abstract:
?合成了一系列环氧树脂(e-44)交联改性自乳化聚氨酯乳液。通过ft-ir、tg对聚合物结构和热性能进行了研究,通过透射电子显微镜(tem)观察乳液形貌。分析了w(e-44)及聚醚二醇(ptmg)相对分子质量对聚氨酯力学性能的影响,并测试了改性聚氨酯膜的耐溶剂性。ft-ir分析表明:环氧树脂的羟基和环氧基都参与了发应。tem表明:乳液颗粒呈均匀分散的刚性球状。tg分析表明:e-44的加入可以提高聚氨酯的热稳定性。随着w(e-44)增大,改性聚氨酯膜的拉伸强度增大,断裂伸长率减小,吸水率和吸乙醇率减小。
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