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Newtonian sintering simulator of two spherical particles
Author(s) -
Rosenzweig N.,
Narkis M.
Publication year - 1983
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.760230108
Subject(s) - coalescence (physics) , sintering , materials science , surface tension , finite element method , viscosity , polymer , newtonian fluid , mechanics , composite material , thermodynamics , physics , astrobiology
Sintering of amorphous polymer particles above their glasstransition temperature is a slow coalescence process in which surface tension is the main driving force, tending to decrease the total surface area, resisted by the polymer viscosity. The shape, and therefore the boundaries of the coalescing particles, change with time. A numerical finite‐element method (FEM) was used to solve the momentum and continuity equations for a coalescing spherical‐particles pair. The solution obtained describes a limited sintering time interval with reasonable agreement. Future modifications of the solution technique are suggested in order to extend its validity to longer sintering periods.