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A hybrid model for mechanical spectra of filled and unfilled elastomers
Author(s) -
Hsich H. S. Y.,
Yanyo L. C.,
Ambrose R. J.
Publication year - 1984
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.1984.070290139
Subject(s) - elastomer , materials science , moduli , relaxation (psychology) , composite material , equation of state , gaussian , polymer science , thermodynamics , physics , computational chemistry , chemistry , psychology , social psychology , quantum mechanics
Abstract The dynamic mechanical properties of elastomers are of vital importance in determining the product design/performance relationship. Unfortunately, the statistical theory of Gaussian networks, commonly used for the ideal rubbery state, cannot adequately model the moduli of elastomers in engineering applications. The WLF equation, although not originally designed to predict moduli, has a functional form that predicts moduli for the range from T g to 100°K plus T g . A hybrid equation which incorporates elements of the WLF equation and the statistical theory of Gaussian networks in an ideal rubbery state has been developed for explaining the mechanical spectrum of elastomeric materials. The new equation satisfactorily models the mechanical properties for both filled and unfilled elastomers. This model shows that filler loading tends to broaden the relaxation spectrum. This finding agrees with a previous study on the viscosity of uncured elastomer‐filler systems.