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Separability behavior in viscoelastic properties of EPDM gum vulcanizate
Author(s) -
Namboodiri C. S. S.,
Tripathy D. K.
Publication year - 1994
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.1994.070510802
Subject(s) - viscoelasticity , dynamic mechanical analysis , materials science , composite material , dynamic modulus , strain (injury) , modulus , dissipation , stress–strain curve , dissipation factor , deformation (meteorology) , polymer , thermodynamics , dielectric , physics , medicine , optoelectronics
Dynamic mechanical properties of EPDM gum vulcanizates were studied using the dynamic viscoelastometer, Rheovibron. A small sinusoidal strain was superimposed on a static strain and its effect on dynamic mechanical properties were analyzed. The results are discussed in terms of total strain which takes the static strain into account. Separability of time and strain effects for loss modulus and the nonseparability for storage modulus are discussed. A critical strain was identified after which the stress dissipation mechanism changes. © 1994 John Wiley & Sons, Inc.