New model for the prediction of the pressure dependence of thermal conductivity of polymer melts

A new model was proposed for the prediction of the pressure dependence of t he thermal conductivity of polymer melts. The model requires only a known o r predicted atmospheric pressure thermal conductivity datum and the Tait eq uation parameters in the calculation of the thermal conductivity for polyme r melts at high pressures. For eight polymer melt systems tested, the predi cted average absolute deviation of the model is normally smaller than 10% f or a wide pressure range. Because the model can be used for polymer systems where no thermal conductivity data exist, it is a predictive model with sa tisfactory accuracy, which is very convenient for practical use.