Application of ultrasound in the determination of fundamental extrusion performance: residence time distribution measurement.: An article from: Polymer Engineering and Science

This digital document is an article from Polymer Engineering and Science, published by Society of Plastics Engineers, Inc. on January 1, 2003. The length of the article is 3468 words. The page length shown above is based on a typical 300-word page. The article is delivered in HTML format and is available in your Amazon.com Digital Locker immediately after purchase. You can view it with any web browser.

From the author: By means of new probe design and rapid data acquisition, we have succeeded in in-line ultrasonic monitoring of residence time distribution (RTD) at the melting, mixing, and pumping zones as well as at the die exit of a Werner & Pfleiderer 30-mm twin-screw extruder by mounting the ultrasonic probes on the extruder barrel over the screw elements and at the die. The experimental systems were LDPE, [CaCO.sub.3]-fllled LDPE, and a Kraton/LDPE blend. The ultrasonic data at each of the extruder functional zones are presented. The ultrasonic results have been used to evaluate an optical RTD measurement method by using an optical sensor side by side with one ultrasonic probe at the mixing zone of the extruder. The comparison of the ultrasonic and optical results has shown that the presented ultrasonic technique could be a good complement to the optical technique in the monitoring and understanding of RTD during polymer extrusion processes.

Citation Details
Title: Application of ultrasound in the determination of fundamental extrusion performance: residence time distribution measurement.
Author: Z. Sun
Publication:Polymer Engineering and Science (Refereed)
Date: January 1, 2003
Publisher: Society of Plastics Engineers, Inc.
Volume: 43 Issue: 1 Page: 102(10)

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