The Theological characterisation of novel polymers is increasingly recognised as vitally important for the prediction and characterisation of processing performance. This paper discusses the use of laboratory scale capillary rheometry and shows that apparent viscosity data at appropriate shear rates correlates well with the behaviour of polymer melts.
Get full access to this article
View all access options for this article.
References
1.
LeachE. A. and KarianH.G., ‘Obtain Viscosity Data from Laboratory Extruders with Capillary Dies’, Plastics Engineering, May, (1982) 69–71.
2.
YasenchakL.P., ‘Rheometric Die Provides Useful Data on Melt Flow’, Modern Plastics, McGraw-Hill, Inc., New York, (1973).
3.
MentovayL.W. and YasenchakL.P., ‘A New Way of Performing Capillary Flow Analysis’, Plastics Design & Processing, Lake Publishing Corporation, Libertyville, IL, (1973).
4.
BagleyE.B., ‘End Corrections in the Capillary Flow of Polyethylene’, Journal of Applied Physics, Vol. 28, No. 5, May (1957) 624–627.
5.
RauwendaalC., Polymer Extrusion, Fifth Edition, Macmillan Publishing Co., New York, (1986) 193–196.
6.
GraessleyW.W., ‘Viscoelasticity and Flow’, Physical Properties of Polymers, American Chemical Society, Washington, D. C., 1984, 119–125.
7.
GomezI.L., Engineering with Rigid PVC, Marcel Dekker, Inc., New York, (1984) 106–113.
8.
BerinsM.L., Ed., ‘Injection Molding of Thermoplastics’, SPI Plastics Engineering Handbook, Van Nostrand Reinhold, New York, Ch. 5, (1991) 155–156.
9.
ASTM D 3835–90, 'Standard Test Method for Determination of Properties of Polymeric Materials by Means of a Capillary Rheometer’, ASTM, Philadelphia, PA, Vol. 08.03, (1991) 195–201.
10.
KirklandC., ‘Small Investment in New Approach Boosts Regal Plastics’, Plastics World, September (1992) 73–76.
11.
BaskindW.S., ‘Rheology Defines What You're Molding’, Plastics Today, March 18, (1989).
12.
HatzikiriakosS.G. and DealyJ.M., ‘Start-up Pressure Transients in a Capillary Rheometer’, SPE Annual Technical Conference, (1992) 1743–1746.
