Fluorinated ethylene propylene (FEP) is similar in its composition to PTFE or PFA; it is, however, softer and can be processed in conventional injection molding.
|DSC 204 F1 Phoenix®
|Al, pierced lid
|N2 (50 ml/min)
The present FEP sample shows an endothermal melting eff ect at 266°C (peak temperature, 2nd heating, red) in the temperature range between 0°C and 310°C with a melting enthalpy of 24 J/g. The shift of the peak temperature of more than 2 K to lower values in the 2nd heating (266°C compared to 268°C in the 1st heating, blue) can be explained by a better contact between the sample and crucible bottom after the first melting. The melting peak in the 1st heating (blue) is a bit slimmer compared to the 2nd heating; this indicates a narrower distribution of crystallite size.