Temperature gradients in the channels of a single-screw extruder.: An article from: Polymer Engineering and Science

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From the author: We used a temperature-sensitive fluorescent dye, perylene, to monitor the true resin temperature during extrusion of polycarbonate. The measurement involved doping polycarbonate with perylene and detecting fluorescence with an optical sensor that accesses a standard instrumentation port on a barrel of a single-screw extruder. The sensor's confocal optics design permits fluorescence intensity measurements as a function of position. Using a previously established calibration function, temperature and temperature gradients were obtained from the measured fluorescence. Because the origin of the measurement is the fluorescent dye molecule that is soluble in the resin, this method allows temperature measurement of the polymer without interference from the surrounding metal parts. With the sensor looking over the screw, temperature profiles from the barrel wall to the core of the screw were obtained as a function of screw speed, screw design and resin melt flow rate. Polym. Eng. Sci. 44:2148-2157, 2004. [c] 2004 Society of Plastics Engineers. ([dagger])

Citation Details
Title: Temperature gradients in the channels of a single-screw extruder.
Author: Anthony J. Bur
Publication:Polymer Engineering and Science (Refereed)
Date: November 1, 2004
Publisher: Society of Plastics Engineers, Inc.
Volume: 44 Issue: 11 Page: 2148(10)

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