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Effects of the functionality of polyol in rigid polyurethane foams

✍ Scribed by Ho Lim; Sung Hee Kim; Byung Kyu Kim


Publisher
John Wiley and Sons
Year
2008
Tongue
English
Weight
210 KB
Volume
110
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