| TDI和PPG聚合反应动力学研究 |
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| 引用本文： | 廖肃然,魏媛,迟长龙,冯高飞.TDI和PPG聚合反应动力学研究[J].河南科学,2011,29(9):1042-1044. |
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| 作者姓名： | 廖肃然 魏媛 迟长龙 冯高飞 |
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| 作者单位： | 河南工程学院材料与化学工程系,郑州,450007 |
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| 基金项目： | 河南省基础与前沿计划(072300420110) |
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| 摘 要： | 采用化学滴定方法,研究了甲苯-2,4-二异氰酸酯(TDI)和聚氧化丙烯二醇(PPG)在有机锡催化剂作用下的反应规律.结果显示,该类反应符合逐步聚合反应的二级动力学特征,50,60℃下,二丁基二月桂酸锡为催化剂时的反应速率常数分别为0.0784,0.3465 kg·mol-1·min-1,活化能为133.21 kJ·mo...
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| 关 键 词： | 动力学 甲苯-2 4-二异氰酸酯 滴定 二丁基二月桂酸锡 辛酸亚锡 |
Study on the Reaction Kinetics of TDI and PPG |
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| Liao Suran,Wei Yuan,Chi Changlong,Feng Gaofei.Study on the Reaction Kinetics of TDI and PPG[J].Henan Science,2011,29(9):1042-1044. |
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| Authors: | Liao Suran Wei Yuan Chi Changlong Feng Gaofei |
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| Institution: | Liao Suran,Wei Yuan,Chi Changlong,Feng Gaofei(Material and Chemical Engineering Department,Henan Institute of Engineering,Zhengzhou 450007,China) |
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| Abstract: | The kinetics of reaction between toluene-2,4-diisocyanates(TDI) and polypropylene glycol(PPG) in the presence of organic tin as catalysts were investigated by chemical titration.The results showed that the reaction obeyed the second-order equation of step-growth polymerization.The rate constants of TDI and PPG catalyzed by dibutyltin dilaurate(DBTDL) were 0.078 4 kg·mol-1·min-1 and 0.346 5 kg·mol-1·min-1 at 50 ℃ and 60 ℃,respectively.In the case of stannous octoate as catalyst,the rate constants were 0.043 4 kg·mol-1·min-1 and 0.204 9 kg·mol-1·min-1. |
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| Keywords: | kinetics toluene-2 4-diisocyanates titration dibutyltin dilaurate stanneous octoate |
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