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THE INFLUENCE OF THE RECYCLED POLYMERIC MATERIALS VISCO-ELASTICITY ON THE PIPE EXTRUSION HEAD DESIGN


NICOLETA TEODORESCU 1, MARIANA-FLORENTINA ĆžTEFĂNESCU 1, MIHAIL RUSSU 1, ELENA-BEATRICE TĂNASE 1
1. Polytechnic University of Bucharest, Faculty of Mechanical Engineering and Mechatronics, Process Equipment Department, Splaiul Independentei, no. 313, Bucharest, 060042, Romania

Issue:

JESR, Number 2, Volume XIX

Section:

Issue No.2 - Volume 19(2013)

Abstract:

There are summarized the experimental researches, previously performed, concerning viscous-elastic characteristics changes of PP due to recycling. There are presented, comparatively, the results for the virgin and 10 times recycled polypropylene. Using CAD-CAM it is studied the influence of the PP viscous-elastic characteristics changes due to recycling on the pipe extrusion head design, aiming to obtain a good extrusion product (expressed in the given case by the pipe dimensions stability). It resulted that it is compulsory to do experimental research to obtain the actual viscous-elastic properties of the polymer after many times recycles, because these properties affect significantly the output and the annular uniformity of the pipes thickness.

Keywords:

viscous-elasticity, polymeric material, recycling, extrusion head for pipes.

Code [ID]:

JESR201302V19S01A0010 [0003851]

Full paper:

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