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Physical and chemical effects of diethyl N , N ′‐diethanolaminomethylphosphate on flame retardancy of rigid polyurethane foam
Author(s) -
Wang XiuLi,
Yang KeKe,
Wang YuZhong
Publication year - 2001
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.1849
Subject(s) - polyurethane , fire retardant , charring , thermal decomposition , isocyanate , materials science , decomposition , composite material , combustion , pyrolysis , fourier transform infrared spectroscopy , chemical engineering , chemistry , organic chemistry , engineering
Abstract Diethyl N , N ‐diethanolaminomethylphosphate could react with isocyanate because it contained hydroxy group. This was confirmed by FTIR spectrum. It did not produce any effect on the foam structure of rigid polyurethane foam (RPUF). SEM, IR spectrum, and thermal analysis were used for investigation of the physical and chemical changes during the combustion of flame‐retardant RPUF. It was shown that the flame retardancy changed the thermal decomposition behavior of RPUF, widened the decomposition temperature region of RPUF, reduced the amounts of decomposition products at high temperatures, and increased the decomposition residuals arisen from charring of flame‐retardant RPUF. Those changes improved the flame retardancy of RPUF. © 2001 John Wiley & Sons, Inc. J Appl Polym Sci 82: 276–282, 2001