Fire retardant synergisms between nanometric Fe 2 O 3  and aluminum phosphinate in poly(butylene terephthalate) | Zendy

Gallo E. | Zendy; Schartel B. | Zendy; Braun U. | Zendy; Russo P. | Zendy; Acierno D. | Zendy

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Fire retardant synergisms between nanometric Fe 2 O 3 and aluminum phosphinate in poly(butylene terephthalate)

Author(s) -

Gallo E.,

Schartel B.,

Braun U.,

Russo P.,

Acierno D.

Publication year - 2011

Publication title -

polymers for advanced technologies

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.61

H-Index - 90

eISSN - 1099-1581

pISSN - 1042-7147

DOI - 10.1002/pat.1774

Subject(s) - materials science , cone calorimeter , phosphinate , char , fire retardant , flammability , thermogravimetry , pyrolysis , chemical engineering , nanocomposite , fourier transform infrared spectroscopy , metal , nuclear chemistry , polymer chemistry , composite material , metallurgy , chemistry , engineering

The pyrolysis and the flame retardancy of poly(butylene terephthalate) (PBT) containing aluminum diethylphosphinate (AlPi) and nanometric Fe 2 O 3 were investigated using thermal analysis, evolved gas analysis (Thermogravimetry‐FTIR), flammability tests (LOI, UL 94), cone calorimeter measurements and chemical analysis of residue (FTIR). AlPi mainly acts as a flame inhibitor in the gas phase, through the release of diethylphosphinic acid. A small amount of Fe 2 O 3 in PBT promotes the formation of a carbonaceous char in the condensed phase. The combination of 5 and 8 wt% AlPi, respectively, with 2 wt% metal oxides achieves V‐0 classification in the UL 94 test thanks to complementary action mechanisms. Using PBT/metal oxide nanocomposites shows a significant increase in the flame retardancy efficiency of AlPi in PBT and thus opens the route to surprisingly sufficient additive contents as low as 7 wt%. Copyright © 2010 John Wiley & Sons, Ltd.

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