Temperature Effects During Capillary Rheometry Testing
Anthony J. Bur, S C. Roth, H Lobo
A non-contact temperature monitoring technique based on fluorescence spectroscopy was used to measure the temperature of a polymer resin during capillary rheometry testing. Polyethylene and polycarbonate doped with a fluorescent dye, perylene, were used in experiments to measure resin temperature changes due to shear heating as shear rate in the capillary increased from 10 s-1 to 10000 s-1. Resin temperature at the exit orifice of a 1 mm diameter capillary die was found to increase monotonically with increasing shear rate reaching as much as 40 oC above the capillary set point temperature at the highest shear rates. The implications regarding rheometry testing are discussed.
Proceedings of the Annual Technical Meeting of the Society of Plastics Engineers
, Roth, S.
and Lobo, H.
Temperature Effects During Capillary Rheometry Testing, Proceedings of the Annual Technical Meeting of the Society of Plastics Engineers, San Francisco, CA, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=851957
(Accessed March 2, 2024)