| 超临界CO2技术制备微孔聚合物中的基本问题 |
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| 引用本文： | 余坚,何嘉松.超临界CO2技术制备微孔聚合物中的基本问题[J].中国科学:化学,2010,40(1):1-15. |
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| 作者姓名： | 余坚 何嘉松 |
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| 作者单位： | 中国科学院化学研究所, 高分子科学与材料联合实验室, 工程塑料重点实验室; 北京分子科学国家实验室, 北京 100190 |
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| 基金项目： | 本工作得到国家自然科学基金(批准号: 59873026, 20274056, 50873113)资助, 特此致谢. |
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| 摘 要： | 微发泡聚合物材料以环境友好的超临界CO2为发泡剂, 具有优异的材料性能. 本文对本课题组的研究工作做了归纳总结, 对聚合物微发泡中CO2的传质、微发泡过程中泡孔结构参数的变化以及多相/多组分聚合物体系的微发泡行为等内容做了针对性的综述. 结合对聚合物微发泡过程理论模拟研究工作的评述, 展望了超临界CO2微发泡技术未来的发展方向.
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| 关 键 词： | 微孔聚合物 微发泡 超临界CO2 多相/多组分聚合物 |
| 收稿时间： | 2009-06-15 |
| 修稿时间： | 2009-06-29 |
Fundamental issues for microfoaming polymers with supercritical CO2 technology |
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| YU Jian ＆ HE JiaSong.Fundamental issues for microfoaming polymers with supercritical CO2 technology[J].Scientia Sinica Chimica,2010,40(1):1-15. |
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| Authors: | YU Jian ＆ HE JiaSong |
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| Institution: | YU Jian ＆ HE JiaSong (Beijing National Laboratory for Molecular Sciences (BNLMS); Key Laboratory of Engineering Plastics, Joint Laboratory of Polymer Science and Materials, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China) |
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| Abstract: | Microcellular polymers, which are processed by using supercritical CO2 as a foaming agent, possess excellent material properties. In this feature article, the research results accumulated in our work are summarized in the aspects of mass transfer behavior of CO2 in polymers, evolution of cell structure during foaming process, and microfoaming behavior of multihase/multi-component polymer systems. And a brief overview is also given on the theoretical simulation studies of cell nucleation and growth in polymer microfoaming. Future development of microcellular polymers is predicted by indicating some scientific and technological issues. |
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| Keywords: | microcellular polymer microfoaming supercritical CO2 multi-phase/multi-component polymer systems |
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