Kinetics of curing reaction of urethane function on base-catalyzed epoxy reaction
Kinetics of curing reaction of urethane function on base-catalyzed epoxy reaction
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DOI：
10.1002/(sici)1097-4628(19980404)68:1
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发表时间：
1998-04
影响因子：
3
通讯作者：
J. L. Han;Y. Chern;K. Hsieh;W. Chiu;C. Ma
中科院分区：
文献类型：
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作者：
J. L. Han;Y. Chern;K. Hsieh;W. Chiu;C. Ma
采用差示扫描量热法（DSC）对叔胺催化的苯基缩水甘油醚（PGE）固化反应进行热分析，研究了芳香连接氨基甲酸酯（ar -氨基甲酸酯）对该反应影响的动力学研究。通过等温DSC分析，发现在芳香连接氨基甲酸酯存在的情况下，PGE环氧基的消耗速率为一级反应。结果表明，该反应体系的活化能（Ea = 4.63 kcal/mol）低于未加氨基甲酸酯的反应体系（Ea = 6.89 kcal/mol）。提出了该反应体系的反应机理。©1998 John Wiley & Sons, Inc高分子学报（英文版），1998
The kinetic study on the effect of aromatic-connected carbamate (Ar-carbamate) on the curing reaction of phenyl glycidyl ether (PGE) catalyzed by tertiary amine was carried out through thermal analysis of the reaction by differential scanning calorimetry (DSC). By isothermal DSC analysis, the consumption rate of the epoxide group of PGE was found to be a first-order reaction in the presence of aromatic-connected carbamate in the reaction. It was found that the reaction system has a low activation energy (Ea = 4.63 kcal/mol) as compared to the system without Ar-carbamate (Ea = 6.89 kcal/mol). A reaction mechanism was proposed for this reaction system. © 1998 John Wiley & Sons, Inc. J Appl Polym Sci 68:121–127, 1998