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Stress–strain behavior of SAN/glass bead composites above the glass transition temperature
Author(s) -
Narkis M.,
Nicolais L.
Publication year - 1971
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.1971.070150220
Subject(s) - materials science , composite material , glass transition , stress relaxation , modulus , relaxation (psychology) , stress (linguistics) , strain (injury) , bead , composite number , stress–strain curve , young's modulus , dynamic mechanical analysis , ultimate tensile strength , polymer , deformation (meteorology) , creep , medicine , psychology , social psychology , linguistics , philosophy
Relaxation and stress–strain behavior of SAN–glass bead composites are studied above the glass transition temperature. The strain imposed on the polymeric matrix of the composite is defined as ϵ p = ϵ c /(1 − ϕ ⅓ ). Stress relaxation data for the filled polymer which is independent of strain can be calculated by multiplying the relaxation modulus (at a certain strain) by (1 + ϵ p ). Stress–strain curves at constant strain rate and for different concentrations of the filler can be shifted to form a master curve independent of filler content if the tensile stress is plotted versus ϵ p . The relaxation modulus increases with increasing the filler concentration and can be predicted by a modified Kerner equation at 110°C.