Thermal conductivity of polymer melts under industrial processing conditions

A. Göttfert J. Sunder
Göttfert GmbH, Germany

Abstract

To optimise heat transfer in industrial processing of plastics like injection moulding or extrusion it is necessary to determine thermal conductivity under different pressures and temperatures. As an additional tool for capillary rheometer testing equipment a transient line-source sensor according ASTM D5930 for heat transfer measurement was developed. The test device is introduced. Measurement results of different polymer materials are presented. A strong influence on pressure and temperature can be observed. The results are comparable to results obtained by other devices.