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Stress–relaxation and stress–strain behavior of poly(ethylene‐co‐vinylacetate) at varying crosslink density
Author(s) -
Fedors R. F.,
Chung S. Y.,
Hong S. D.
Publication year - 1985
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.1985.070300620
Subject(s) - materials science , relaxation (psychology) , stress relaxation , stress (linguistics) , modulus , ethylene , polymer , vinyl acetate , polymer chemistry , poly ethylene , degree (music) , composite material , ethylene vinyl acetate , glass transition , thermodynamics , creep , organic chemistry , chemistry , copolymer , physics , psychology , social psychology , linguistics , philosophy , acoustics , catalysis
The stress–relaxation modulus of an unfilled ethylene vinyl acetate polymer at three different degrees of crosslinking was measured at 15 temperatures over a temperature span of about 160°C. At each temperature, the time response was measured for at least 3 decades of time. From these data it was possible to construct a master curve for each degree of crosslinking. The time–temperature shift factors, a T , were found to be related to temperature by the relation log a T = − A ( T –273), where the parameter A has an average value of 0.234 for the three materials.