Preparation and Characterization of Selected Rigid Polyurethane Foam Formulations | ||
| The International Conference on Chemical and Environmental Engineering | ||
| Article 22, Volume 7, 7th International Conference on Chemical & Environmental Engineering, May 2014, Pages 1-11 PDF (184.19 K) | ||
| Document Type: Original Article | ||
| DOI: 10.21608/iccee.2014.35454 | ||
| Authors | ||
| Mohamed. S. Mohamed; Hosam. E. Mostafa; Mostafa. M. Seleet | ||
| Egyptian Armed Forces. | ||
| Abstract | ||
| Abstract Density of rigid polyurethane foam (RPF) has a major effect on its mechanical properties which, in turn, determine the performance level in different applications. Several RPF samples were prepared through free and non-free rise foaming with different densities by changing the weight percent of its major chemical constituents. Moreover, some additives were used to change the density in the range of 40-900 kg/m3. Stress-strain curves of selected samples showed clearly the effect of density on the mechanical properties (such as elastic modulus and plateau stress values), effect of load direction on resistance of samples to the applied load, and effect of preparation method (in high density samples) on the mechanical properties. Finally, Stress-strain curves were used to assess the rigidity level change due to chemical formulation nature change. | ||
| Keywords | ||
| rigid polyurethane foam; Stress-Strain relation; Elastic modulus | ||
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