Experimental studies have been made of the permissible regimes of processing ultrahigh molecular weight polyethylene GUR 2122 with molecular mass of 4.5 million g/moles in a laboratory extruder with an auger diameter 32 mm and a ratio L/D = 20 at temperatures of 155–165oC. On the basis of rotational viscometry, the rheological properties of the melt are described. A mathematical model and a numerical method for calculating the motion of ultrahigh molecular weight polyethylene melt in the auger and in the moulding rigging are proposed. The velocity and stress fields have been determined.
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Translated from Inzhenerno-Fizicheskii Zhurnal, Vol. 91, No. 2, pp. 584–594, March–April, 2018.
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Skul′skii, O.I., Slavnov, E.V. Features of Extrusion Processing of Ultrahigh Molecular Weight Polyethylene. Experiment and Theory. J Eng Phys Thermophy 91, 556–564 (2018). https://doi.org/10.1007/s10891-018-1776-1
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DOI: https://doi.org/10.1007/s10891-018-1776-1