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Hydraulic resistance of rigid polyurethane foams. III. Effect of variation of the concentration of catalysts on foam structure and properties

โœ Scribed by Pravakar Mondal; D. V. Khakhar

Publisher
John Wiley and Sons
Year
2004
Tongue
English
Weight
119 KB
Volume
93
Category
Article
ISSN
0021-8995

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Immediately after heating rigid foam polyurethane (PU) at 165"C, it degrades in accordance with the degradation mechanisms suggested by Abu-&id et al. in earlier publications. However, after three days all photoacoustic spectra (PAS) bands indicative of PU degradation almost disappeared, and the sam