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Measurement of the coefficient of dynamic friction at extrusion processing conditions
Author(s) -
Gamache E.,
Lafleur P. G.,
Peiti C.,
Vergnes B.
Publication year - 1999
Publication title -
polymer engineering and science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.503
H-Index - 111
eISSN - 1548-2634
pISSN - 0032-3888
DOI - 10.1002/pen.11554
Subject(s) - materials science , plastics extrusion , extrusion , friction coefficient , dynamical friction , constant (computer programming) , high density polyethylene , composite material , mechanics , polymer , particle (ecology) , rotational speed , coefficient of friction , rotation (mathematics) , thermodynamics , mechanical engineering , polyethylene , computer science , mathematics , physics , engineering , geometry , oceanography , programming language , geology
Abstract The dynamic friction coefficients of several polymers have been investigated using a specific rotating device similar to an extruder. The increase in temperature during the measurements made it necessary to develop a theoretical approach in order to interpret the experimental data correctly. The rotation speed and particle shapes were found to have little influence on the friction coefficient. For HDPE and PVC, the friction coefficient decreased slightly with interfacial temperature, whereas it remained constant for PP. The order of magnitude of the friction coefficients was similar to what has already been published in the literature.