02437nab a2200229 4500 20260523200102.0 260224s2015 xxu ing Inglés Wang, Lingling 43360 Dong, Yuli 54801 Zhang, Chao 54802 Zhang, Dashan 54803 Experimental Study of Heat Transfer in Intumescent Coatings Exposed to Non-Standard Furnace Curves mayo 2015 14/09/2015 ; 14/09/2015 16 p. ; 627-643 Transcripción del resúmen realizada por el autor: This paper reports the results of an experimental study on fire protection performance of intumescent coatings exposed to three non-standard fire curves. Intumescent coatings were applied to steel plates to make test specimens and, in total, furnace tests were performed on 36 specimens. The effective thermal conductivities of the intumescent coatings were calculated based on the measured steel and furnace temperatures. Scanning electron microscopy (SEM) tests were conducted to give some information on the difference in inner structure of intumescent char. Results of the experimental studies reveal that the fire protection performance of intumescent coating is highly dependent on the heating rate and maximum temperature of the fire condition. Different pore structures of the intumescent chars were obtained when intumescent coatings were subjected to fires with varied heating rates. The reaction steps of intumescent coating underwent depended on the maximum temperature of the fire condition. The consequence of this is changed expansion ratio and inner structure of intumescent char and then different effective thermal conductivity. When subjected to non-standard fire I, the reaction process of intumescent coating was incomplete and no "honeycomb" pore structure was observed; in comparison, the coating underwent complete reaction process and compact "honeycomb" pore structure was obtained when exposed to non-standard fire III; the maximum difference for representative values of effective thermal conductivities was up to 48.8%. In addition, due to the peculiar flame retardant mechanism of the intumescent coating, increasing the coating thickness does not always yield insulating property benefit. 3 Fire Technology 51 ARTICULO ddc 189175 189175 0 0 0 0 256994 BAAB BAAB 2026-03-06 200061407 0 200061407 2026-03-06 00:19:23 2026-03-06 ARTICULO