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Coefficients of dynamic friction for low density polyethylene
Author(s) -
Spalding Mark A.,
Kirkpatrick Donald E.,
Hyun Kun S.
Publication year - 1993
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.760330708
Subject(s) - materials science , composite material , low density polyethylene , polyethylene , dynamical friction , friction coefficient , high density polyethylene , polymer science
The coefficient of dynamic friction is often the controlling factor for solids conveying, pressure generation, and thermal decomposition of a resin in the feed section of a single‐screw plasticating extruder. The coefficients of friction are, however, very poorly understood, and the interpretation of the measurements are complicated by the dissipation of frictional energy at the sliding interface. A new instrument was recently built to help understand dynamic friction, and a numerical technique was developed to estimate the interface temperature. The coefficients of dynamic friction for a low‐density polyethylene resin are presented in this paper as a function of the surface temperature, pressure, and velocity.