%K Blowing agents; Field emission microscopes; Fillers; Flammability testing; Morphology; Silicate minerals; Substrates; X ray diffraction, Coating formulations; Expandable graphite; Field emission scanning electron microscopy; Intumescent coating; Intumescent fire retardant coatings; Thermal Performance; Weight percentages; Wollastonite, Coatings
%X Various types of intumescent fire retardant coatings (IFRC's) have been used to protect the substrates exposed to fire. In current study, high temperature filler Wollastonite (W) filler was used to improve fire performance of intumescent fire retardant coating. The basic ingredients of the coating were ammonium poly-phosphate (APP) as acid source, expandable graphite (EG) as carbon source, melamine (MEL) as blowing agent in epoxy binder, boric acid as additive and hardener as curing agent. In this study a range of coating formulations were developed by using different weight percentages of Wollastonite filler. The coated steel substrate samples were tested for fire performance using Bunsen burner and char expansion was measured using furnace fire test. Composition of the char was determined by X-ray diffraction (XRD) technique. The char morphology was studied using field emission scanning electron microscopy (FESEM). Results showed that Intumescent coating with addition of Wollastonite filler enhanced anti-oxidation of the char. Presence of phosphorus, calcium and silicon in char layer further improved the thermal stability of char. © (2014) Trans Tech Publications, Switzerland.
%J Advanced Materials Research
%L scholars5131
%O cited By 8; Conference of 1st International Conference on Science and Engineering of Materials, ICoSEM 2013 ; Conference Date: 13 November 2013 Through 14 November 2013; Conference Code:106246
%R 10.4028/www.scientific.net/AMR.970.328
%D 2014
%I Trans Tech Publications Ltd
%A M. Zia-ul-Mustafa
%A F. Ahmad
%A P.S.M. Megat-Yusoff
%A H. Aziz
%V 970
%T The effect of wollastonite filler on thermal performance of intumescent fire retardant coating
%C Kuala Lumpur
%P 328-331