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The effect of preloading on the mechanical properties of polymeric foams
Author(s) -
Ozkul M. H.,
Mark J. E.
Publication year - 1994
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.760341003
Subject(s) - cushioning , materials science , composite material , polyurethane , polystyrene , modulus , stress–strain curve , compression (physics) , expanded polystyrene , polyethylene , stress (linguistics) , polymer , deformation (meteorology) , linguistics , philosophy
The polymeric foams investigated with regard to their mechanical properties were the rigid foams polystyrene, polyurethane, and phenolic, and the semirigid foam polyethylene. Preloading of the rigid foams was found to decrease the modulus by an amount that increased as the extent of preloading increased, and to decrease both the modulus and collapse stress in the case of the semirigid ones. The shape of the stress‐strain curves of the foams was also significantly changed by the preloading, and a reduction in cushioning properties in static compression was observed.