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Effect of molecular structure on the thermal aging properties of flexible urethane foams
Author(s) -
Smith C. H.,
Degisi S. L.
Publication year - 1966
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.1966.070100512
Subject(s) - compression set , isocyanate , materials science , ethylenediamine , polyurethane , composite material , swelling , solvent , diol , polymer chemistry , natural rubber , chemistry , organic chemistry
A series of flexible urethane foams was formulated from diisocyanate‐terminated polyether prepolymers, using both a polyether diol and an ethylenediamine tetraglycol as extenders. The long‐term compression set characteristics and the compression deflection properties of these foams were studied. The swelling effect in a solvent, the free isocyanate content, and the role of a carbon black filler on the flexible urethane foam formulation were also evaluated. It was concluded that the total amount of diisocyanate used in the formulation, rather than a variation in the type of isocyanate, has the greatest influence on molecular structure.