Curing reaction of polyol and blocked isocyanate crosslinkers was studied with an isothermal kinetics approach on a differential scanning calorimetry (DSC). Curing kinetic parameters at different temperatures including the reaction orders and the rate constants were calculated using the Arrhenius equation. These kinetic parameters were useful in predicting the optimum curing temperature and time for several powder coating formulations. This DSC kinetics method also serves as a powerful tool for Eastman innovation scientists to control the extent of coating curing under different conditions.

Unleashing the power of DSC in studying coatng reaction kinetics

254th National Meeting (2017)

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