Cure Kinetics of Epoxy Resin Studied by Dynamics and Isothermal DSC Data
Engineering and Technology Journal,
2016, Volume 34, Issue 9, Pages 1731-1743
AbstractDiglycidyl ether of bisphenol A(DGEBA) epoxy resin was cured withhardeners aliphatic amine triethylenetetramine (TETA). Differential scanning calorimetry (DSC) technique was utilized to study the kinetics of cure of (DGEBA)-(TETA) system,diverse hardener/resin ratios werestudied, (5, 13and 20) phr. Isothermal as wellas dynamic experiments were carried out of the above mentioned DGEBA/TETA system with three hardener/resin ratios, and cure kinetics were investigated at four temperatures (30, 45, 60 and 80) °C using (DSC) technique. The process of isothermal cure was simulated by the diffusion model (modified Kamal’s model and four-parameter autocatalytic model. The obtainedoutcomes are in good agreement with the experimental results in the early andlate cure stages. The eventsdeclare that complete cure at 80 °C attains atthe stoichiometric ratio (13 phr).
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