AC impedance function of electrochemical working station as novel curing degree monitor method: A model curing system of epoxy/anhydride/DMP-30

Construction and Curing Behavior of Underwater In Situ Repairing Coatings for Offshore Structures

“…As the curing progressed, the phase angle close to 90 • gradually shifted towards lower frequencies, indicating that the electrochemical process slowed down and a threedimensional network was formed. At the same time, the phase angle approached 90 • over a wide frequency region in the final stage of curing, indicating that a complete and dense coating had been formed which was close to an insulating medium and can be approximated as a capacitive element in the electrode system [31]. The Nyquist plots shown in Figure 4d clearly demonstrate the electrochemical behavior as well as the crosslinking degree of the system.…”

“…As a result, there is an urgent need to put forward a new analytical tool to offer real-time information on the curing reaction accurately and swiftly, especially for systems under special circumstances. More recently, Han et al employed electrochemical impedance spectroscopy (EIS) to analyze the kinetic behavior of an epoxy resin [30,31]. It showed good concordance between the EIS and DSC results, indicating that EIS has great potential in monitoring the curing behavior of the thermosetting resin.…”

Low viscosity and low temperature curing reactive POSS/epoxy hybrid resin with enhanced toughness and comprehensive thermal performance

“…4(c). 56,57 Fig. 4(b) displays the DSC curves of the OPEP 0.02 system at different heating stages, and by integrating the peak areas, the corresponding reaction enthalpies (H S ) for different heating stages can be obtained, where the total reaction enthalpy (H T ) of the uncured OPEP 0.02 system is 283.74 J g −1 .…”