| 温度对交联聚氨酯脲弹性体结构与性能的影响 |
| |
| 引用本文： | 李再峰,杨光华,李德和,辛浩波.温度对交联聚氨酯脲弹性体结构与性能的影响[J].光谱学与光谱分析,2000,20(3):318-321. |
| |
| 作者姓名： | 李再峰 杨光华 李德和 辛浩波 |
| |
| 作者单位： | 1. 青岛化工学院橡胶新技术研究所,266042,青岛
2. 石油大学重质油国家重点实验室,102200,北京 |
| |
| 基金项目： | 国家计委八·五重点科技攻关资助项目!(85 -5 0 7-2 0 )，重质油加工国家重点实验室开放基金资助项目 |
| |
| 摘 要： | 采用“原位”变温ＦＴＩＲ研究了温度对交联聚氨酯脲结构的影响。结果表明：随着温度的升高，氢键化的ＮＨ振动的谱带面积逐渐变小、游离的ＮＨ振动的谱带面积逐渐增加；氢键化的ＮＨ基团的振动吸收位置由低波数逐渐移向高波数，游离的ＮＨ振动的吸收位置保护不变；所有羰基的振动吸收位置均向高波数移动；酰胺Ⅱ谱带及萃环中的大π键的变形振动则移向低波数。聚氨酯脲弹性体的力学性能决定于其；软段区的形态结构。
|
| 关 键 词： | 交联聚氨酯脲 原位FTIR 结构 力学性能 温度 |
The Effect of Temperature on the Structure and Properties of Polyurethane-urea by FTIR |
| |
| Zaifeng LI,Guanghua YANG,Dehe LI,Haobo XIN.The Effect of Temperature on the Structure and Properties of Polyurethane-urea by FTIR[J].Spectroscopy and Spectral Analysis,2000,20(3):318-321. |
| |
| Authors: | Zaifeng LI Guanghua YANG Dehe LI Haobo XIN |
| |
| Institution: | State Key Laboratory of Heavy Oil Processing, University of Petroleum, 102200 Beijing. |
| |
| Abstract: | The effect of temperature on the structure and properties of polyurethane-urea was investigated by in situ FTIR. Data from FTIR spectra showed that with increasing temperature the nu NHHbonded areas decrease and the nu NHfree band areas increase. The band site of nu NHHbonded shifted to higher wavenumbers and the band site of nu NHfree keeps constant. The band site of Cfree urethane shift from 1,731 cm-1 to 1,736 cm-1. All kinds of carbonly bands sites shifted to high wavenumbers. But the band sites of amide II and the C=C in aromatic ring shifted to low wavenumbers. The properties of PUU polymers was determined by the structure of soft domains. |
| |
| Keywords: | Crosslinked PUU In situ FTIR Structure Mec hanical properties |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
