Glass transition and melting behavior of carbon fiber reinforced thermoplastic composite, studied by electrical resistance measurement

DC electrical resistance measurement was applied to investigate the glass transition and melting behavior of carbon fiber reinforced nylon-6 composite. The electrical resistance exhibited temperature dependencies that were attributed to the matrix molecular movements associated with structural transitions. The electrical resistance was affected by the degree of crystallinity and the thermal oxidative degradation, which were governed by the thermal history. The resistance results are consistent with differential scanning calorimetry (DSC) results. The resistance is more sensitive to the glass transition than DSC.