Infrared temperature measurement of polymers.: An article from: Polymer Engineering and Science
Book Details
Author(s)Christian Maier
PublisherSociety of Plastics Engineers, Inc.
ISBN / ASINB00096KX6Q
ISBN-13978B00096KX61
AvailabilityAvailable for download now
MarketplaceUnited States 🇺🇸
Description
This digital document is an article from Polymer Engineering and Science, published by Society of Plastics Engineers, Inc. on June 15, 1996. The length of the article is 6309 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: Infrared (IR) thermosensors that measure the temperature of polymeric melts in processing by guiding the thermal radiation along fibers to the optovoltaic transducer are on the market. The fundamental concepts of thermal radiation must be viewed in a volumetric sense. In sequence, a model is presented to estimate the response of such IR thermosensors. It is dictated by the volumetric absorptivity of the polymer and the transmittance of the optical fiber. For typical commercial thermosensors, the entire wavelength between 1.5 and 2.2 [[micro]meter] is relevant. Penetration depths can vary from magnitudes of mm to dm, since the IR probe is sensitive to the maximum temperatures in its acceptance volume. These findings were put to the test in two different experimental settings. In the first, the calculations overestimated the comparable experimental values by 10 to 20 [degrees] C, but were reasonable given the relatively simple experimental apparatus. In the second setup, the maximum temperature of melt coming off the screws, measured by penetrating a small thermocouple into the stream, matched the IR temperature sensor's readings. The measurement of temperature excursions in different mixing geometries is demonstrated. No kneading section with forward staggered paddles gave significant increases in temperature. In contrast, maximum temperature excursions could be measured when reverse elements were in place.
Citation Details
Title: Infrared temperature measurement of polymers.
Author: Christian Maier
Publication:Polymer Engineering and Science (Refereed)
Date: June 15, 1996
Publisher: Society of Plastics Engineers, Inc.
Volume: v36 Issue: n11 Page: p1502(11)
Distributed by Thomson Gale
From the author: Infrared (IR) thermosensors that measure the temperature of polymeric melts in processing by guiding the thermal radiation along fibers to the optovoltaic transducer are on the market. The fundamental concepts of thermal radiation must be viewed in a volumetric sense. In sequence, a model is presented to estimate the response of such IR thermosensors. It is dictated by the volumetric absorptivity of the polymer and the transmittance of the optical fiber. For typical commercial thermosensors, the entire wavelength between 1.5 and 2.2 [[micro]meter] is relevant. Penetration depths can vary from magnitudes of mm to dm, since the IR probe is sensitive to the maximum temperatures in its acceptance volume. These findings were put to the test in two different experimental settings. In the first, the calculations overestimated the comparable experimental values by 10 to 20 [degrees] C, but were reasonable given the relatively simple experimental apparatus. In the second setup, the maximum temperature of melt coming off the screws, measured by penetrating a small thermocouple into the stream, matched the IR temperature sensor's readings. The measurement of temperature excursions in different mixing geometries is demonstrated. No kneading section with forward staggered paddles gave significant increases in temperature. In contrast, maximum temperature excursions could be measured when reverse elements were in place.
Citation Details
Title: Infrared temperature measurement of polymers.
Author: Christian Maier
Publication:Polymer Engineering and Science (Refereed)
Date: June 15, 1996
Publisher: Society of Plastics Engineers, Inc.
Volume: v36 Issue: n11 Page: p1502(11)
Distributed by Thomson Gale
