Can temperature control be used with 2-part epoxies?
Yes, it can. Most 2-part epoxies result in an exothermic reaction when mixed, meaning that they generate heat. As this heat builds, the reaction rate increases, which in turn increases the rate of heat generation. This cycle continues until both reactive components in the mix are consumed. If the epoxy is being applied to a delicate substrate, this heating can result in damage to the part. If the processing rate is not maintained, the epoxy can cure prematurely resulting in product defect. Since the heating also initially reduces the viscosity (prior to set-up), sloughing and improper bead profiles can result. By adding temperature control, the cure rate and application viscosity can be carefully regulated thus eliminating these issues.
