摘要
研究了聚己二酸丁二醇酯型热塑性聚氨酯（ＰＴＡＤ－ＴＰＵ）和聚己二酸乙二醇丙二醇酯型热塑性聚氨酯（ＰＥＰＤ－ＴＰＵ）的合成，并用ＷＡＸＤ、ＤＳＣ、ＦＴ－ＩＲ对ＰＥＰＤ－ＴＰＵ进行结构表征。结果表明：不同软硬段配比对ＴＰＵ性能有显著的影响；异氰酸酯指数为１．０时，ＴＰＵ的综合性能最好；一步法合成的ＴＰＵ比二步法合成的ＴＰＵ的性能好；ＴＰＵ中硬段相形成结晶结构，且由于硬段的存在，提高了软段有序程度和热稳定性；软段相与硬段相之间有较好的相容性，微相分离程度小；ＴＰＵ中有７０％～７５％的氨基形成氢键。
A series of PEPD TPU and PTAD TPU were synthesized and the effects of hard/soft segment ratios.Ratios of / and different synthesizing methods on TPU properties were studied. PEPD TPU were characterized with WAXD, DSC, FTIR. DSC was an effective method to characterize PEPD TPU.
出处
《南京化工大学学报》
1996年第4期86-92,共7页
Journal of Nanjing University of Chemical Technology(Natural Science Edition)
关键词
热塑性聚氨酯
合成
结构表征
聚氨酯弹性体
thermoplastic polyurethane elastomer synthesis structural characterization
