| 超重力法制备高活性聚异丁烯工艺研究 |
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| 引用本文： | 刘冲,王伟,吕丽丽,邹海魁,初广文,陈建峰,吴一弦. 超重力法制备高活性聚异丁烯工艺研究[J]. 现代化工, 2011, 31(Z1): 350-353 |
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| 作者姓名： | 刘冲 王伟 吕丽丽 邹海魁 初广文 陈建峰 吴一弦 |
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| 作者单位： | 1. 北京化工大学化学工程学院,北京,100029
2. 北京化工大学材料科学与工程学院,北京,100029 |
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| 摘 要： | 将超重力技术与阳离子聚合技术有机结合,首次在旋转填充床(RPB)中制备了高活性聚异丁烯(HRPIB)产品,考察了旋转床转速、单体与催化剂流量比、单体浓度等操作条件对聚合反应单体转化率和聚异丁烯数均分子质量、分子质量分布、末端α-双键摩尔分数的影响规律。结果表明,通过调节操作条件,可以实现高活性聚异丁烯的可控生产。制备的聚异丁烯产品数均分子质量1 600~3 400 g/mol,分子质量分布为2.2~3.0,末端α-烯烃摩尔分数在85%左右,单程转化率最高可以达到84%,聚异丁烯产品的各项指标略优于传统工艺。该工艺使物料在反应器内的平均停留时间从传统工艺的20~300 min缩短至小于1 s,反应器的体积大大缩小,生产效率大幅度提高。
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| 关 键 词： | 超重力技术 阳离子聚合 高活性聚异丁烯 末端α-烯烃摩尔分数 |
Preparation highly reactive polyisobutylenes in rotating packed bed |
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| LIU Chong,WANG Wei,LV Li-li,ZOU Hai-kui,CHU Guang-wen,CHEN Jian-feng,WU Yi-xian. Preparation highly reactive polyisobutylenes in rotating packed bed[J]. Modern Chemical Industry, 2011, 31(Z1): 350-353 |
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| Authors: | LIU Chong WANG Wei LV Li-li ZOU Hai-kui CHU Guang-wen CHEN Jian-feng WU Yi-xian |
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| Affiliation: | LIU Chong1,WANG Wei1,LV Li-li1,ZOU Hai-kui1,CHU Guang-wen1,CHEN Jian-feng1,WU Yi-xian2(1.College of Chemical Engineering,Beijing University of Chemical Technology,Beijing 100029,China,2.College of Materials Science and Engineering,China) |
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| Abstract: | Highly reactive polyisobutylenes is prepared in rotating packed bed for the first time with combination technology of high-gravity and cationic polymerization.The effects of the operating parameters(rotating speed,volume ratio of monomer and catalyst,monomer concentration) on monomer conversion,molecular weight,molecular weight distribution,and molor fraction of exo-olefin end groups of polyisobutylenes(PIB) are investigated in the experiments.Experimental results indicate that HRPIB can be controllably pro... |
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| Keywords: | high-gravity technology cationic polymerization highly reactive polyisobutylenes molor fraction of exo-olefin end groups |
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