Flow properties and entrance corrections of polymer melts by a mobile barrel capillary rheometer

摘要

This paper investigates the flow properties and entrance corrections of a polyethylene melt in a capillary rheometer that features the possibilities of moving either the piston or the barrel, the latter mode being novel in operation. The paper mainly aims to investigate the variations in the flow properties and the entrance corrections due to the mode of operation. It is found that the flow properties and entrance corrections are dependent on the mode of operation and the die sizes used in the capillary rheometer, this being thought to be associated with the flows occurring in the capillary rheometer. (C) 2000 Elsevier Science Ltd. All rights reserved. [References: 14]