Effect of supercritical carbon dioxide on polystyrene extrusion - IMT Mines Albi-Carmaux Access content directly
Journal Articles Journal of Supercritical Fluids Year : 2007

Effect of supercritical carbon dioxide on polystyrene extrusion

Abstract

A study on the extrusion of polystyrene was carried out using supercritical carbon dioxide (scCO2) as foaming agent. scCO2 modifies the rheological properties of the material in the barrel of the extruder and acts as a blowing agent during the relaxation at the passage through the die. For experiments, a single-screw extruder was modified to be able to inject scCO2 within the extruded material. The effect of operating parameters on material porosity was studied. Samples were characterized by using water-pycnometry, mercury-porosimetry and scanning electron microscopy. Polystyrene with expansion rate about 15–25% was manufactured. A rapid cooling just downstream the die is important to solidify the structure. The die temperature allows the control of the porosity structure. CO2 concentration shows no significant influence.
Fichier principal
Vignette du fichier
sauceau-effect.pdf (1.57 Mo) Télécharger le fichier
Origin : Files produced by the author(s)
Loading...

Dates and versions

hal-01829541 , version 1 (17-07-2018)

Identifiers

Cite

Martial Sauceau, Clémence Nikitine, Élisabeth Rodier, Jacques Fages. Effect of supercritical carbon dioxide on polystyrene extrusion. Journal of Supercritical Fluids, 2007, 43 (2), pp.367 - 373. ⟨10.1016/j.supflu.2007.05.014⟩. ⟨hal-01829541⟩
80 View
549 Download

Altmetric

Share

Gmail Facebook X LinkedIn More