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Mechanical Properties of a Structural Polyurethane Foam and the Effect of Particulate Loading

Published online by Cambridge University Press:  10 February 2011

S. H. Goods ,
C. L. Neuschwanger  and
L. L. Whinnery
S. H. Goods
Affiliation:
Sandia National Laboratories, Livermore, CA, 94550
C. L. Neuschwanger
Affiliation:
Sandia National Laboratories, Livermore, CA, 94550
L. L. Whinnery
Affiliation:
Sandia National Laboratories, Livermore, CA, 94550
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Abstract

The room temperature mechanical properties of a closed-cell, polyurethane encapsulant foam have been measured as a function of foam density. Tests were performed on both unfilled and filler reinforced specimens. Over the range of densities examined, the modulus of the unloaded foam could be described by a power-law relationship with respect to density. This power-law relationship could be explained in terms of the elastic compliance of the cellular structure of the foam using a simple geometric model found in the literature. The collapse stress of the foam was also found to exhibit a power-law relationship with respect to density. Additions of an aluminum powder filler increased the modulus relative to the unfilled foam.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 521: Symposium R – Porous & Cellular Materials for Structural Applications , 1998 , 15
Copyright
Copyright © Materials Research Society 1998

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References

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