Badanie procesu pulweryzacji metodą ścinania w stanie stałym w wytłaczarce jednoślimakowej na przykładzie PE-LD

T. Rusiecki; R. Steller

Published : 2022-09-01

Vol. 49 No. 3 (2004)

Study on the solid-state shear pulverization process in single screw extruder illustrated by polyethylene as an example

T. Rusiecki R. Steller

Abstract

Investigations were carried out in a conventional single-screw extruder equipped with modified heating system of a cylinder, which of the first zone was heated and the other one cooled. Four thermoplastic polymers were the subjects of investigations: PE-HD, PE-LD, PS and PP. From among them only PE-LD undergoes the effective pulverization in the extruder used. The effects of speed of screw rotation as well as temperature of heating of a cylinder conversion zone on size reduction degree of PE-LD pulverized (Fig. 2, Table 1) were determined. It has been stated the fine PE-LD powder formed in the wide ranges of these parameters and energy demand appeared to be relatively small. Second zone of a cylinder (feeding zone) should be intensively cooled because only in such case the polymeric powder was most fine. The use of a special screw tip (Fig. 4) let take it off quickly from the cylinder immediately after the process interruption and, as a consequence, let characterize the solid bed. PE-LD pulverization goes rapidly at narrow temperature range below the temperature of polymer melting.

Keywords

pulweryzacja ; wytłaczanie ścinające w stanie stałym ; wytłaczarka jednoślimakowa ; polietylen małej gęstości ; temperatura cylindra ; stopień rozdrobnienia pulverization ; solid state shear extrusion ; single-screw extruder ; low-density polyethylene ; temperature of a cylinder ; size reduction degree

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Rusiecki, T., & Steller, R. (2022). Study on the solid-state shear pulverization process in single screw extruder illustrated by polyethylene as an example. Polimery, 49(3), 202–207. Retrieved from https://polimery.ichp.vot.pl/index.php/p/article/view/1744

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T. Rusiecki polimery@ichp.pl

Affiliation
Politechnika Wrocławska, Wydział Chemiczny, Instytut Technologii Organicznej i Tworzyw Sztucznych, ul. Wybrzeże Wyspiańskiego 27, 50-370 Wrocław

R. Steller

Affiliation
Politechnika Wrocławska, Wydział Chemiczny, Instytut Technologii Organicznej i Tworzyw Sztucznych, ul. Wybrzeże Wyspiańskiego 27, 50-370 Wrocław