分别采用Kamal模型和Kissinger模型研究了E-51/胺基酰亚胺潜伏性固化体系的等温和非等温固化动力学,讨论了该体系的固化反应机理.结果表明,由这两种动力学模型得到的固化动力学参数基本相近,E-51/胺基酰亚胺体系固化反应起始阶段的活化能较高,约为124 kJ/mol～131 kJ/mol.该体系的固化反应包含n级反应和自催化反应.胺基酰亚胺热分解反应是E-51/胺基酰亚胺体系固化反应的控制步骤.
In order to understand the cure mechanism of novel latent epoxy resin/aminimide, the isothermal cure kinetics and non-isothermal cure kinetics of latent E-51/aminimide system were studied by means of Kamal model and Kissinger model. The cure mechanism of this system was analyzed. The results show that the cure kinetic parameters obtained from these 2 models are close to each other. E-51/aminimide system exhibits high apparent activation energy (124 kJ/mol～131 kJ/mol)during initial curing stage than those of most latent cure systems. The curing process of E-51/aminimide system contains autocatalytie mechanism and n-level mechanism. The pyrolysis reaction of aminimide is the control step of E-51/aminimide system curing reaction rate.
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