Citation

Liu H, Liu Y, Wang H, Lin X, Liao H. China Saf. Sci. J. 2020; 30(5): 14-20.

Copyright

(Copyright © 2020, China Occupational Safety and Health Association, Publisher Gai Xue bao)

DOI

10.16265/j.cnki.issn1003-3033.2020.05.003

PMID

unavailable

Abstract

In order to improve flame retardancy of IFR on POM, compound ZB-IFR samples were prepared by blending ZB with commonly used IFR (ammonium polyphosphate-melamine-pentaerythritol), and ZB-IFR/ POM flame-retardant composites were made with melt blending method. Then synergistic flame-retardant effects of ZB-IFR on POM were studied by using limiting oxygen index (LOI), vertical combustion (UL-94), thermogravimetric analysis (TGA), scanning electron microscope (SEM), CONE calorimeter and Thermogravimetric-infrared (TG-IR). The results show that when 1% ZB is added, LOI of obtained 1. 0ZB-IFR/ POM can reach 55% and UL-94 grade is V-0. And after thermal expansion, the composite has a high char residual content with a compact and stable char layer, and its heat release rate (HRR), mass loss and smoke emission are the smallest during combustion process, so its fire performance index (FPI) is relatively high. Besides, IFR / POM without ZB emits more CO2 during thermal decomposition than 1. 0ZB-IFR / POM, indicating that ZB addition can effectively hinder full combustion of flame-retardant composites, exhibiting good synergistic flame-retardant effects. © 2019 China Safety Science Journal

Language: zh