Experimental study and verification of the residence time distribution using fluorescence spectroscopy and color measurement
Sprache des Titels:
Englisch
Original Buchtitel:
AIP Conference Proceedings 1664, 100005 (2015)
Original Kurzfassung:
We report on the inline measurement of residence time (RT) and residence time distribution (RTD) by means
of fluorescence spectroscopy [1] and optical color measurements [2]. Measurements of thermoplastics in a variety of
single-screw extruders were conducted. To assess the influence of screw configurations, screw speeds and mass
throughput on the RT and RTD, tracer particles were introduced into the feeding section and the RT was measured inline
in the plasticization unit. Using special measurement probes that can be inserted into 1/2" - 20 UNF (unified fine thread)
bore holes, the mixing ability of either the whole plasticization unit or selected screw regions, e.g., mixing parts, can be
validated during the extrusion process. The measurement setups complement each other well, and their combined use can
provide further insights into the mixing behavior of single-screw plasticization units.
Forschungs-