The isothermal curing reaction kinetics of urushiol and IPDI at 30-65℃were studied by using differential scanning calorimetry(DSC).The experimental data were fitted by using n-order reaction model,autocatalytic model and Kamal model.The results showed that the single n-order reaction model was not suitable for describing the isothermal curing kinetics of the urushiol and IPDI system,and the autocatalytic and Kamal models were more appropriate for describing the curing kinetics process of urushiol-based polyurethane system.Additionally,the activation energy of the reaction system was calculated using the Arrhenius equation,and Ea1 was 60.135kJ·mol-1 and Ea2 was 83.581kJ·mol-1.These models can be used for the process optimization and further development of urushiol-based materials.
UrushiolCuring kineticsN-order modelAutocatalytic modelKamal model
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