Effect of molecular structure on the thermal aging properties of flexible urethane foams | Zendy

Smith C. H. | Zendy; Degisi S. L. | Zendy

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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.

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