Abstract
In this paper the curing kinetics of diglycidyl ether of 4,4′-diallyl-bisphenol-A (DADGEBA) using sulfur (S) as curing agent was studied by non-isothermal and isothermal differential scanning calorimetry (DSC). The kinetic mechanism equations were determined using autocatalytic models and nth-order reaction model. DSC measurement showed that the curing process of DADGEBA/S system contains two steps because of the double exothermic peaks in DSC curve. The model data simulation results indicated that the Šesták-Berggren (SB) model had a great distinction with the experimental data. Isothermal DSC analysis showed that the curing reactions followed Kamal's autocatalytic model when the reaction temperature was below 210°C, and when the temperature was above 210°C the nth-order model can be used to describe the curing reaction process of the DADGEBA/S system perfectly. The two kinetic equations in the entire reaction process of DADGEBA/S system are consistent with the two-step reaction mechanisms of the same system.
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