Age Deformation After Stamping of Carbon Fiber Reinforced Polycarbonate Laminates

This study was concerned with the effect of stamping condition on age deformation after stamping for textile carbon fiber reinforced Polycarbonate (CF/PC) laminates. The textile CF/PC laminates were stamped to hat shape under various stamping temperatures. The specimens were held at several exposure temperatures into the constant temperature chamber after stamping process and the variations of hat angle against exposure time were measured. As results, it is cleared that the age deformation is suppressed with increasing stamping temperature. The variation of hat angle as the long-term dimensional stability can be predicted from the measured data at elevated temperatures based on the time-temperature superposition principle which is held for the viscoelasticity of matrix polycarbonate.