The mechanical behavior of microporous polyurethane foams
Article first published online: 9 MAR 2003
Copyright © 1971 John Wiley & Sons, Inc.
Journal of Applied Polymer Science
Volume 15, Issue 5, pages 1205–1218, May 1971
How to Cite
Whittaker, R. E. (1971), The mechanical behavior of microporous polyurethane foams. J. Appl. Polym. Sci., 15: 1205–1218. doi: 10.1002/app.1971.070150515
- Issue published online: 9 MAR 2003
- Article first published online: 9 MAR 2003
- Manuscript Revised: 19 JAN 1971
- Manuscript Received: 3 DEC 1970
The mechanical behavior of microporous polyurethane foams used in poromeric materials can be described by use of a model comprising of struts of square cross section arranged in a cubical lattice. The model was initially proposed by Gent and Thomas to describe the properties exhibited by natural rubber latex foams. The microporous polyurethane foams used in poromerics are in general much stronger than natural rubber foams, and it has been found that their tear and tensile properties are dependent on the size of the largest pore, which can be up to 20 times greater in diameter than the average pore size. The behavior of the polyurethane foam in compression can be satisfactorily described by use of this cubical model and shape factor theories from polymer engineering.