| 光谱学与光谱分析 |
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| Study on Effect of Thermal Process on the Morphology and Mechanical Properties of RIM PUU by In-situ FTIR |
| LI Zai-feng1，ZHANG Tian-lin2，XU Chun-ming3 |
1. College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, Qingdao 266042, China
2. Department of Chemical Engineering, Huaihai Institute of Industry and Technology, Lian Yuangang 222000, China
3. State Key Lab of Heavy Oil, University of Petroleum, Beijing 102249, China |
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Abstract The samples of PUU polymers were characterized by In-situ FTIR in a temperature-controlled cell. The spectra of FTIR showed that the absorbance of ordered hydrogen-bonded urea carbonyl group(1 643 cm-1) became stronger with increasing thermal process time (at 100 ℃), then changed little after a certain time. The rate of change for absorbance of ordered hydrogen-bonded urea link, attributed to microphase separation kinetics, was enhanced with increasing thermal process temperature. In carbonyl region of FTIR spectra, absorbance for various carbonyls available in PUU polymers, associated with micro-hard domain, was observed before thermal process. However, after the process, only the absorbance of free urethane, hydrogen-bonded urethane and ordered urea became obvious. At 100 ℃, the longer the process time (beyond 8 h), the worse the mechanical properties obtained. The PUU polymers processed at 100 ℃ with the identical process time exhibited the best mechanical properties.
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Received: 2003-03-28
Accepted: 2003-08-26
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Corresponding Authors:
LI Zai-feng
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| Cite this article: |
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LI Zai-feng,ZHANG Tian-lin,XU Chun-ming. Study on Effect of Thermal Process on the Morphology and Mechanical Properties of RIM PUU by In-situ FTIR [J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2004, 24(09): 1066-1068.
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| URL: |
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http://www.gpxygpfx.com/EN/Y2004/V24/I09/1066 |
[1] Hepburn C. Polyurethane Elastomer. Great Britain, Applied Science Publisher Ltd., 1982: 50.
[2] LI Zai-feng，XU Chun-ming，YIN Shu-mei, WEN Li-rong(李再峰, 徐春明, 殷树梅，文丽荣). Spectroscopy and Spectral Analysis(光谱学与光谱分析), 2002, 22(5): 774.
[3] LI Zai-feng, YANG Guang-hua, ZHAO Deng-xing, GAO Zhao-lian, LI De-he(李再峰，杨光华，赵登星, 高照连, 李德和). Spectroscopy and Spectral Analysis(光谱学与光谱分析), 2000, 20(5): 715.
[4] LI Zai-feng, XIN Hao-bo, YANG Guang-hua et al(李再峰, 辛浩波, 杨光华等). J. Qingdao Institute of Technology(青岛化工学院学报), 1998, 19(4): 324.
[5] LI Zai-feng, YANG Guang-hua, LI De-he, XIN Hao-bo(李再峰，杨光华，李德和，辛浩波). Spectroscopy and Spectral Analysis(光谱学与光谱分析), 2000, 20(3): 318.
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