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Abstract Curing kinetics of the waterborne epoxy emulsion (EPWE)/Graphene oxide (GO) system was investigated by non-isothermal differential scanning calorimetry (DSC), which shows an autocatalytic behavior and can be well predicted… Click to show full abstract
Abstract Curing kinetics of the waterborne epoxy emulsion (EPWE)/Graphene oxide (GO) system was investigated by non-isothermal differential scanning calorimetry (DSC), which shows an autocatalytic behavior and can be well predicted by model fitting kinetic method. By combining with the kinetics simulation and the conventional extrapolation method, an novel three-stage curing process with a high initial cure temperature and a cooling stage was proposed to inhibit the thermal shock inside materials and the uneven curing reaction during the curing process of the materials. The experimental results indicate that compared to the conventional two-stage curing process, the new curing procedure containing a cooling section significantly increased the bending strength by 14.9%, elastic modulus by 7.3% and Tg by 8 K of the cured GO/EPWE material, and the total curing time clearly decreased.
Journal Title: Thermochimica Acta
Year Published: 2019
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