缩水甘油醚
环氧树脂
差示扫描量热法
固化(化学)
热重分析
高分子化学
材料科学
胺气处理
二胺
动力学
反应级数
化学计量学
活化能
化学
双酚A
物理化学
有机化学
热力学
反应速率常数
复合材料
物理
量子力学
作者
Nicolas Sbirrazzuoli,Alice Mija,Luc Vincent,Camille Alzina
标识
DOI:10.1016/j.tca.2006.06.005
摘要
The curing reaction of stoichiometric and off-stoichiometric diglycidyl ether of bisphenol A (DGEBA) and 1,3-phenylene diamine (m-PDA) mixtures was studied by differential scanning calorimetry, thermogravimetric analysis and rheological measurements. In order to highlight the side reactions such as etherification and homopolymerization, the neat DGEBA and DGEBA/DMBA (N,N-dimethylbenzylamine) mixture were examined. The classical model-fitting and the advanced isoconversional methods were used to determine the activation energy of the different reactions. The advanced isoconversional method leads to a good agreement between isothermal, nonisothermal and rheological results. The effective activation energies of primary amine epoxy reaction, etherification and homopolymerization were estimated to about 55–60, 104 and 170 kJ mol−1, respectively.
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