Alexander Lepschi, Jakob Kilgus, Markus Brandstetter, Jürgen Miethlinger,
"Effect of Extrusion Parameters on Properties of Powder Coatings Determined by Infrared Spectroscopy"
, in Journal of Coating Science and Technology, Nummer 4, Lifescience Global, Seite(n) 31-39, 10-2017, ISSN: 2369-3355
Original Titel:
Effect of Extrusion Parameters on Properties of Powder Coatings Determined by Infrared Spectroscopy
Sprache des Titels:
Englisch
Original Kurzfassung:
In polymer extrusion, compounding is a continuous mixing process that is also used to produce highly reactive powder coatings. A premixed batch of powder coating is added to the feeding section and extruded, preferably by a co-rotating twin-screw extruder. One essential parameter in the processing of highly reactive materials is the melt temperature: If it is too high, pre-reactions occur during the extrusion process, which may cause high rejection rates. We studied the melt temperature of an epoxy/carboxyl-based powder coating using a retractable thermocouple at 3 different axial positions along the barrel of a ZSK34 co-rotating twin-screw extruder. The influence of different processing conditions on the reactivity of a highly reactive powder coating was examined by infrared spectroscopy and differential scanning calorimetry. Furthermore, the specific energy input and the color change in the finished powder coating at different processing points were investigated. Multivariate data analysis was used to correlate mid-infrared spectra, melt temperatures, specific energy inputs, enthalpies of reaction and changes in color.
Sprache der Kurzfassung:
Englisch
Journal:
Journal of Coating Science and Technology
Veröffentlicher:
Lifescience Global
Number:
4
Seitenreferenz:
31-39
Erscheinungsmonat:
10
Erscheinungsjahr:
2017
ISSN:
2369-3355
Anzahl der Seiten:
9
Reichweite:
international
Publikationstyp:
Aufsatz / Paper in sonstiger referierter Fachzeitschrift
Forschungs-