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Some aspects of a plastics pulverization technology by extrusion
Author(s) -
Ivanov George K.
Publication year - 2000
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.11198
Subject(s) - vicat softening point , materials science , low density polyethylene , plastics extrusion , composite material , softening point , extrusion , softening , polyethylene
Abstract This study presents results, observations and new developments on the pulverization of low density polyethylene (LDPE) by a nontraditional technology. A twin screw conical counter‐rotating extruder, a mixer head with roller blades and a single screw extruder attached to a C.W. Brabender PL2000 Plasti‐Corder were utilized as pulverization apparatuses. The pulverization phenomenon was studied over a wide range of shear rates and at resin processing temperatures below and above the Vicat softening point, i.e., at solid and soft (visco‐elastic/rubbery‐like) state of the material. A hypothesis about the pulverization mechanism of LDPE at a temperature between melting/crystallization temperature and Vicat softening point is presented.