Bur, A.
, Roth, S.
and McBrearty, M.
(2004),
A Dielectric Slit Die for In-Line Monitoring of Polymer Compounding, Review of Scientific Instruments, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=852265
(Accessed May 10, 2025)
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A Dielectric Slit Die for In-Line Monitoring of Polymer Compounding
Published
Author(s)
, , M M. McBrearty
Abstract
The dielectric slit die is an instrument that is designed to measure electrical, rheological, ultrasonics, optical and other properties of a flowing liquid. In one application it is connected to the exit of an extrudder, pump or mixing machine that passes liquefied material such as molten plastics, solvents, slurries, colloidal suspensions and foodstuffs into the sensing region of slit shaped die. Dielectric sensing is the primary element of the slit die, but in addition to the dielctric sensor, the die contains other sensing devices such as pressure, optical and ultrasonics sensors.The slit die has a flexible design that permits interchangability among sensors and sensor positions. To demonstrate sensor operation, we present data from extrusion and compounding of a polymer/clay nanocomposite.Citation
Review of Scientific Instruments
Volume
75
Issue
No. 4
Pub Type
Journals
Download Paper
Keywords
dielectric properties, microstructure, nanocomposites, nylon 12, optical sensor, polyamide, process monitoring
Citation
Issues
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Created April 1, 2004, Updated February 19, 2017