Curing kinetics of diallyl phthalate in the presence of dicumyl peroxide as catalyst. A comparison of different data analysis techniques
The curing kinetics of diallyl phthalate in the presence of dicumyl peroxide as catalyst were studied by means of the single dynamic temperature scan DSC method. The curing process is accomplished by the liberation of heat and appears as an exotherm on the DSC thermogram. Different data analysis methods were employed to analyse the reaction exotherm and to obtain the kinetic parameters. The rate constants obtained by means of the cut-and-weigh method, as well as those calculated from the residual heats of reaction after different oven curing times, were in excellent agreement with the values obtained by using the Borchardt and Daniels DSC kinetics data analysis software (supplied by Du Pont). It was evident from the results of this study that all the data analysis methods were suitable for determining the kinetic parameters of thermoset curing reactions which follow first-order kinetics. However, this study has shown conclusively that the analysis speed and simplicity of the Borchardt and Daniels DSC kinetics program make this the preferred method for obtaining quantitative reaction kinetics information for the curing of thermoset resins. © 1993.