[1] For investigation of the curing behavior of thermosetting resin systems, composite materials, adhesives and paints, Dielectric Analysis (DEA) can be used in accordance with ASTM E 2038 or E 2039.
The great advantage of DEA is that it can be employed not only on a laboratory scale, but also in process.
[2] The resulting sinusoidal current (the response) is measured at the second electrode.
The response signal is attenuated in amplitude and shifted in phase in relation to the mobility of the ions and alignment of the dipoles.
Dipoles in the material will attempt to align with the electric field and ions (present as impurities) will move toward the electrode of opposite polarity.