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Burning behaviour of intumescent coating and nanoparticles applied on flaxboard

Biomedical Sciences Research Institute Computer Science Research Institute Environmental Sciences Research Institute Nanotechnology & Advanced Materials Research Institute

Zhang, Jianping, Delichatsios, Michael, McKee, Maurice and Ukleja, S (2010) Burning behaviour of intumescent coating and nanoparticles applied on flaxboard. In: INTERFLAM 2010, 12th International Conference On Fire Science And Engineering, University of Nottingham, UK. Interscience Communications Limited. 1956 pp. [Conference contribution]

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URL: http://www.intersciencecomms.co.uk/html/events/if10proceedings.htm

Abstract

This paper presents an experimental investigation of the ignition and burning behaviours ofintumescent coatings and nanoparticles applied on flaxboard using three standard tests: the cone calorimeter, single burning item (SBI) and reduced scale (1/3rd) ISO room. Results in the cone calorimeter and SBI, both representing open burning, showed that the intumescent coating is effective in delaying ignition and reducing the heat release rate (HRR). With nanoparticles, further delay in ignition and reduction in the HRR were observed owing to an increase in the thermal stability of the char in the presence of nanoparticles. In the 1/3rd ISO room tests, the reduction in the HRR is found to be less substantial than that in the cone calorimeter or SBI. This finding highlights the important difference between burning in an open condition or in an enclosure, because in an enclosure the sample is heated not only by the flame but, more importantly, by the hot smoke layer and surrounding walls. Furthermore, in an enclosure the maximum HRR is limited by the amount of oxygen entering the enclosure through the opening. In order to examine the performance of intumescent coatings inventilation-controlled condition, tests were performed in the 1/3rd ISO room with reduced opening sizes (50 and 75 % of the standard opening size). It is found that in the case of 50 % opening size, for which a ventilation-controlled condition was attained, the maximum HRRs for the materials w/wo intumescent coatings were found to be the same.

Item Type:Conference contribution (Paper)
Faculties and Schools:Faculty of Art, Design and the Built Environment
Faculty of Art, Design and the Built Environment > School of the Built Environment
Research Institutes and Groups:Built Environment Research Institute
Built Environment Research Institute > Fire Safety and Engineering Research and Technology Centre (FireSERT)
ID Code:17771
Deposited By:Dr Sebastian Ukleja
Deposited On:05 Apr 2011 16:59
Last Modified:23 Jun 2011 14:45

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