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Effect of phosphorus-nitrogen additives on fire retardancy of rigid polyurethane foams

✍ Scribed by Harpal Singh; A. K. Jain; T. P. Sharma


Publisher
John Wiley and Sons
Year
2008
Tongue
English
Weight
474 KB
Volume
109
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