The epoxy resin diglycidyl ether of Bisphenol A (BADGE n = 0) has been cured with a new synthesized hardener (2‐adamantylethanamine) and the crosslinking reaction was characterized by DSC. Values of 413.3 J/g and 95°C have been obtained for the enthalpy of the reaction and the glass transition temperature, respectively. The experimental results obey Kamal's model over all conversion range of temperatures (70°C‐100°C). The activation energies of the mechanisms involved in the curing reaction have been determined for both the autocatalytic and the n‐order mechanism, the values being 63.3 and 29.8 kJ/mol, respectively. The value for T_g is 23°C higher than the one for (BADGE n = 0)/amantadine, while the activation energy for the n‐order mechanism is around 13 kJ/mol lower. This is consistent with a higher steric effect of the adamantyl group in the second hardener since it will hinder the opening the oxirane ring by the nitrogen atom of the amino group. As the polymerization reaction progress, this effect will disappear as the distance adamantyl‐oxirane increase when new oxirane groups react with the hydroxyl groups (autocatalyzed reaction). Consequently, by selecting the appropriate cross‐linking agent, it is possible to simultaneously increase T_g while reducing theactivation energy, two effects which may be desirable for some industrial applications of the material.

中文翻译：

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用2-金刚烷胺固化双酚A二缩水甘油醚（BADGE n = 0）的分析

双酚A（BADGE n = 0）的环氧树脂二缩水甘油醚已用新型合成的固化剂（2-金刚烷胺）进行了固化，并通过DSC对交联反应进行了表征。对于反应的焓和玻璃化转变温度，分别获得了413.3J / g和95℃的值。在所有温度转换范围（70°C-100°C）内，实验结果均服从Kamal模型。固化反应中涉及的机理的活化能已针对自催化机理和n阶机理进行了测定，其值分别为63.3和29.8 kJ / mol。T _g的值比（BADGE n = 0）/金刚烷胺的T _g高23°C，而n的活化能顺序机制降低了约13 kJ / mol。这与第二种硬化剂中金刚烷基的更高的空间效应相一致，因为它将阻碍氨基的氮原子打开环氧乙烷环。随着聚合反应的进行，当新的环氧乙烷基团与羟基发生反应（自催化反应）时，随着金刚烷基-环氧乙烷距离的增加，这种效应将消失。因此，通过选择合适的交联剂，可以同时增加T _g并同时降低活化能，这是该材料在某些工业应用中可能需要的两种效果。