Preparation and Characterization of Foaming Poly (phenylene ether ketone) PPEK by Using Supercritical Carbon Dioxide

This paper presents foaming behaviors of PPEK blown with supercritical CO2. The cell density and cell size of PPEK at various process conditions were studied. The experimental results indicate that saturate pressure, foaming temperature and suitable foaming time can provide a positive impact on improving the cell morphology of PPEK foams.