ONLINE MEASUREMENT OF RESIDENCE TIME DISTRIBUTION IN A TWIN-SCREW EXTRUDER

Authors
CHEN T PATTERSON WI DEALY JM
Citation
T. Chen et al., ONLINE MEASUREMENT OF RESIDENCE TIME DISTRIBUTION IN A TWIN-SCREW EXTRUDER, International polymer processing, 10(1), 1995, pp. 3-9
Citations number
28
Categorie Soggetti
Engineering, Chemical","Polymer Sciences
Journal title
International polymer processing → ACNP
ISSN journal
0930777X
Volume
10
Issue
1
Year of publication
1995
Pages
3 - 9
Database
ISI
SICI code
0930-777X(1995)10:1<3:OMORTD>2.0.ZU;2-1
Abstract
A simple optical on-line residence rime distribution (RTD) measurement technique has been developed. Changes in extrudate light transmittanc e are monitored by a photomultiplier. A He-Ne laser is the light sourc e with carbon black as the tracer. The RTD of a ZSK-30 twin-screw extr uder was measured using this technique. The effects of feed rate, scre w speed, and melt viscosity on the RTD were studied. Also, the effect of the presence of an in-line rheometer an RTD was examined. The advan tages and disadvantages of the technique are discussed.