Citation

Xinlong Wang, Lianghu Wu, Jin Li. J. Fire Sci. 2011; 29(3): 227-242.

Copyright

(Copyright © 2011, SAGE Publishing)

DOI

10.1177/0734904110388923

PMID

unavailable

Abstract

Melamine polyphosphate and pentaerythritol were used as intumescent flame retardants to improve the flame retardance (FR) of polypropylene. As a synergistic agent, nano-ZrO₂ was incorporated into the composites at different proportions. The synergistic effects of nano-ZrO₂ were studied by cone calorimeter tests and thermal gravimetric analysis. Based on Fourier transform infrared spectra, X-ray photo-electron spectroscopy, and scanning electron microscopy, it was evident that nano-ZrO₂ efficiently promoted the formation of charred layers with phosphocarbonaceous structures and enhanced the FR of the composites.