Effects of nano-sized boron nitride (BN) reinforcement in expandable graphite based in-tumescent fire retardant coating

14th International Symposium on Advanced Materials

Zulkurnain, E.S.^1 ; Ahmad, F.^1 ; Gillani, Q.F.^1

Universiti Teknologi PETRONAS, Bandar Seri Iskandar, Malaysia^1

关键词: Ammonium polyphosphates;    Bisphenol A epoxy resin;    Coating formulations;    Expandable graphite;    Field emission scanning electron microscopy;    Fire retardant coating;    Residual weight;    Weight percentages;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/146/1/012037/pdf
DOI  :  10.1088/1757-899X/146/1/012037

来源: IOP

【 摘 要 】

The purpose of in-tumescent fire retardant coating (IFRC) is to protect substrate from fire attack by limiting heat transfer. A range of coating formulations have been prepared using Bisphenol A epoxy resin BE-188 and polyamide solidifier H-2310 as two-part binder, ammonium polyphosphate (APP) as acid source, melamine (MEL) as the blowing agent, expandable graphite (EG) as carbon source and nano-boron nitride (BN) as inorganic nano filler. The filler was used to improve the performances of the APP-EG-MEL coating. The effects of nano-BN on the char morphology and thermal degradation were investigated by fire test, thermo gravimetric analysis (TGA), Fourier transform infrared spectroscopy (FTIR), X- ray photoelectron spectroscopy (XPS) and field emission scanning electron microscopy (FESEM). The results showed that by substituting or reinforcing of 4% weight percentage of nano-BN, residual weight of the char increases by 23.82% compared to APP-EG-MEL coating without filler. Higher carbon content was obtained in the char and a more compact char was produced. The results indicated that nano-BN could be used as a filler to improve thermal stability of the APP-EG-MEL coating.