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Enhancing the Char Resistant of Expandable Graphite Based Intumescent Fire Retardant Coatings by Using Multi-Wall Carbon Nano Tubes for Structural Steel

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Abstract:

In the intumescent fire retardant (IFR) coating char thickness and its strength play a vital role to protect the base steel structure from the fire. The IFR coating contains expandable graphite (EG), ammonium polyphosphate (APP), melamine, boric acid, bisphenol, epoxy resin BE-188 (BPA) which is used as a binder with ACR hardener H-2310 polyamide amine and multi wall carbon nanotubes (MWCNTs). A range of different formations were prepared to study the heat shielding effect and char expansion after fire test. The intumescent coating was tested at 800°C for one hour in the furnace and found to be very stable and well bonded with the steel substrate. The characterization was done by using Thermo gravimetric analysis (TGA), Fourier transform infrared spectroscopy (FTIR) and Field emission scanning electron microscopy (FESEM) after fire test. The results confirmed that MWCNTs enhanced the char resistant of IFR coating on steel substrate after fire test. Keywords: Intumescent fire retardant coating, Expandable Graphite, Multiwall Carbonnano tubes, FESEM and TGA.

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Periodical:

Solid State Phenomena (Volume 185)

Pages:

90-93

DOI:

https://doi.org/10.4028/www.scientific.net/SSP.185.90

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Online since:

February 2012

Authors:

Sami Ullah, Faiz Ahmad

Keywords:

Expandable Graphite, FESEM, Intumescent Fire-Retardant Coatings, Multiwall Carbonnano Tubes, TGA

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© 2012 Trans Tech Publications Ltd. All Rights Reserved

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