Effect of Epoxy Binder on Fire Protection and Bonding Strength of Intumescent Fire Protective Coatings for Steel

Abstract:

This study focuses on the effect of epoxy emulsion, a binder for producing water-borne intumescent fire protective coating for steel structures. The influence of binder on the fire resistive performance, char formation, thermal stability and bonding strength of the coatings were investigated in detail by using Bunsen burner test, thermogravimetry analysis (TGA), field emission scanning electron microscopy (FESEM) and Instron microtester. It was found that the fire protection performance and foam structure of coating sample D2 was significantly improved by adding 10wt% of epoxy resin which produced the greatest thickness of char layer. In addition, TGA results showed that the residue weight of coating D2 was higher than coating sample D3 with 15wt% of epoxy. This indicated that sample D2 has better anti-oxidation and thermal stability. The results of Instron microtester indicated that the bonding strength of the coatings was improved with the increase of epoxy content.

• Periodical: Advanced Materials Research (Volumes 168-170)
• Pages: 1228-1232
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.168-170.1228
• Online since: December 2010
• Authors: Ming Chian Yew, Nor Hafizah Ramli Sulong
• Keywords: Fire Protection, Flame Retardant, Intumescent Coating, Structural Steel

References

[1] S. C. Upadhya: Asian Paints (I) Ltd, Paintindia. Vol. 50 (2000), pp.45-52.

[2] S. Duquesne, S. Magnet, et al.: Intumescent paints: fire protective coatings for metallic substrates, Surface and Coatings Technology. Vol. 180-181 (2004), p.302.

DOI: 10.1016/j.surfcoat.2003.10.075

[3] S. Duquesne, S. Magnet, C. Jama and R. Delobel: Thermoplastic resins for thin film intumescent coatings: towards a better understanding of their effect on intumescence efficiency, Polymer Degradation Stability. Vol. 88 (2005), pp.63-69.

DOI: 10.1016/j.polymdegradstab.2004.01.026

[4] M. Jimenez, S. Duquesne and S. Bourbigot: Intumescent fire protective coating: toward a better understanding of their mechanism of action, Thermochimica Acta. Vol. 449 (2006), pp.16-26.

DOI: 10.1016/j.tca.2006.07.008

[5] G. Wang and J. Yang: Influences of binder on fire protection and anticorrosion properties of intumecent fire resistive coating for steel structure, Surface and Coatings Technology. Vol. 204 (2010), pp.1186-1192.

DOI: 10.1016/j.surfcoat.2009.10.040

[6] M.C. Yew and N.H. Ramli Sulong: Eggshell, a novel bio-filler intumescent fire protective coating on steel, submitted to Fire Safety Journal (2010).

[7] M.C. Yew and N.H. Ramli Sulong: Investigation on Fire Protection of Intmescent Coatings for Steel, Proceedings of the 1st International seminar on Sustainable Infrastructure and Building Environment in Developing Countries (SIBE2009), Bandung Indonesia.

[8] Z.Y. Wang, E.H. Han and W. Ke: Effect of nanoparticles on the improvement in fire-resistant and anti-ageing properties of flame-retardant coating, Surface and Coatings Technology. Vol. 200 (2006), p.5706.

DOI: 10.1016/j.surfcoat.2005.08.102