Abstract
Aging in polycarbonate (PC) fully annealed and subsequently strained up to inelastic range in tension was analyzed using static mechanical test, deformation recovery at heating, and differential scanning calorimetry (DSC). Yield stress of PC specimens aged under inelastic tensile strain increased with aging time, thus showing that the strain-aging in PC was probable even under negative hydrostatic pressure. In the meantime, deformation recovery of aged specimens indicated that threshold temperature for the release of the inelastic strain at heating increased with aging time, that is, the strain was locked in PC specimen more tightly with increasing aging time.
