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Relationship between thermoelasticity and reinforcement in elastomers: Silica filled silicone elastomers
Author(s) -
Galanti A. V.,
Sperling L. H.
Publication year - 1970
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.760100309
Subject(s) - materials science , elastomer , composite material , silicone rubber , thermoelastic damping , silicone , ultimate tensile strength , reinforcement , modulus , thermodynamics , physics , thermal
Increases in modulus, tensile strength, and swelling caused by reinforcing silicone rubber with silica filler were correlated with the thermoelastic parameter, f e /f. A new semiempirical equation of state, containing a generalized front factor, was derived to explain the experimental results. While the retractive force in pure gum elastomers is largely entropic in origin, reinforcement in silicone rubber‐silica systems appears to arise by greatly augmenting the deformational free energy change stored in energetic modes.