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The effects of strain rate, density, and temperature on the mechanical properties of polymethylene diisocyanate (PMDI)-based rigid polyurethane foams during compression

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Abstract

Compressive experiments on three types of rigid polyurethane foams were conducted by employing modified split Hopkinson pressure bars (SHPBs). The foam materials, which were based on polymethylene diisocyanate (PMDI), varied only in density (0.31 × 103, 0.41 × 103, and 0.55 × 103 kg/m3) and were compressed at strain rates as high as 3 × 103 s−1. Dynamic experiments were also performed on these three foam materials at temperatures ranging from 219 to 347 K, while maintaining a fixed high strain rate of ~3 × 103 s−1. In addition, an MTS materials testing frame was used to characterize the low-strain-rate compressive response of these three foam materials at room temperature (295 K). Our study determined the effects of density, strain rate, and temperature on the compressive response of the foam materials, resulting in a compressive stress–strain curve for each material.

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Acknowledgements

The authors would like to thank Mr. Xu Nie at Purdue University for his friendly help in obtaining scanning electron microscopy images of the foam structures. This work was performed at Purdue University and supported by Sandia National Laboratories, operated by Sandia Corporation, a Lockheed Martin Company, for the United States Department of Energy under Contract DE-AC04-94AL85000.

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Correspondence to Bo Song.

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Song, B., Lu, WY., Syn, C.J. et al. The effects of strain rate, density, and temperature on the mechanical properties of polymethylene diisocyanate (PMDI)-based rigid polyurethane foams during compression. J Mater Sci 44, 351–357 (2009). https://doi.org/10.1007/s10853-008-3105-0

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  • DOI: https://doi.org/10.1007/s10853-008-3105-0

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