Effect of stamping condition on age deformation of textile carbon fiber reinforced polycarbonate laminates

Abstract

This study examines the effect of stamping condition on age deformation after stamping of textile carbon fiber reinforced polycarbonate laminates. The laminates were stamped to a hat shape at various stamping temperatures between the glass transition temperature Tg and the melting temperature Tm of polycarbonate. Then the age deformation, which is the hat angle variation, was measured. Results show that the age deformation occurs at the stamping temperature in the vicinity of Tg. The age deformation is suppressed when the stamping temperature is sufficiently higher than Tg. Furthermore, the long-term age deformation as the dimensional stability was predicted from the measured deformation at elevated temperature based on the time–temperature superposition principle for the viscoelasticity of the polycarbonate matrix.