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Effect of cellular structure on the water absorption of rigid foamed polyurethanes

โœ Scribed by A. G. Dement'ev; O. G. Tarakanov

Publisher
Springer US
Year
1979
Tongue
English
Weight
497 KB
Volume
14
Category
Article
ISSN
1573-8922

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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