文献类型：期刊文献

中文题名：LiCl对脂肪族聚氨酯脲结构与性能的影响

英文题名：Influence of LiCl on the Morphology,Structure and Properties of Aliphatic Polyurethaneurea

作者：杨娟[1];王贵友[1];胡春圃[1]

机构：[1]华东理工大学材料科学与工程学院,上海200237

年份：2006

卷号：32

期号：11

起止页码：1293

中文期刊名：华东理工大学学报（自然科学版）

外文期刊名：Journal of East China University of Science and Technology

收录：CSTPCD;;EI(收录号：20070310373201);Scopus;北大核心:【北大核心2004】；CSCD:【CSCD2011_2012】；

基金：上海市科委资助项目(035211043)

语种：中文

中文关键词：脂肪族聚氨酯脲;LiCl;形态结构;力学性能

外文关键词：aliphatic polyurethaneureas; LiCl; morphology and structure; mechanical properties

摘要：通过FT-IR和DSC等研究了L iC l对脂肪族聚氨酯脲溶液粘度以及聚氨酯脲膜的结构和性能的影响。研究结果表明:L iC l的加入使聚氨酯脲溶液的初期粘度降低,后期粘度升高;含L iC l的聚氨酯脲的Tg和氨酯羰基的氢键化程度提高,但脲羰基的氢键化程度降低;L iC l的加入使聚氨酯脲的拉伸模量、硬度、撕裂强度和吸水率显著升高。
The effect of LiCl on the viscosity of polyurethaneurea （PUU） solution, and structures and properties of PUU films was studied by using FT-IR and DSC. The results show that the viscosity of PUU solution decrease first by adding LiCl, but then increase. Because of the coordination of LiCl with ether and carbonyl groups existed in the PUU films, the value of Tg and the degree of ordered hydrogen bonding of urethane groups in the PUU films increased by adding LiCl into PUU films, but the degree of ordered hydrogen bonding of urea groups in the PUU films decreased. The tensile modulus, hardness and tear strength of the PUU films can be enhanced appreciably by adding LiCl into the PUU films. However, the water absorption of the PUU films containing LiCl was higher than that of the PUU film without LiCl.