SOLUBILITY OF HFC-134A, HCFC-142B, AND HFC-152A IN POLYSTYRENE

摘要

The vapor-liquid phase equilibria of HFC-134a, HCFC-142b, and HFC-152a in polystyrene were measured at temperatures from 348 to 473 K and pressures up to 3.2 MPa by using a volumetric method. The solubility of these blowing agents decreased with temperature. Amount of HCFC-142b, HFC-152a, and HFC-134a in polystyrene decreased in that order. The solubilities measured were correlated by the Sanchez-Lacombe equation of state. Agreement between the experimental solubilities and the correlations with a temperature-dependent binary interaction parameter was satisfactory. The interaction parameters linearly varied with temperature.