Kalorimetrische Messungen von Wärmeeffekten bei Verstreckung

Abstract

Heat effects and the work in stretching a polycarbonate are measured in a wide range of stretching rates and at two different temperatures. Conclusions are drawn on the enthalpy increase during the stretching process. Indirect conclusions on the entropy variation during stretching seem to be possible. The effect of temperature balance is confirmed and the strain relaxation of the stretched material seems also to be coupled with heat production.