Burning behaviour of intumescent coating and nanoparticles applied on flaxboard

Jianping Zhang, Michael Delichatsios, Maurice McKee, S Ukleja

Research output: Chapter in Book/Report/Conference proceedingConference contribution

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.
LanguageEnglish
Title of host publicationUnknown Host Publication
Pages569-580
Number of pages1956
Publication statusPublished - 2010
EventINTERFLAM 2010, 12th International Conference On Fire Science And Engineering - University of Nottingham, UK
Duration: 1 Jan 2010 → …

Conference

ConferenceINTERFLAM 2010, 12th International Conference On Fire Science And Engineering
Period1/01/10 → …

Fingerprint

Nanoparticles
Enclosures
Coatings
Calorimeters
Ignition
Cones
Smoke
Ventilation
Thermodynamic stability
Oxygen
Hot Temperature

Cite this

Zhang, J., Delichatsios, M., McKee, M., & Ukleja, S. (2010). Burning behaviour of intumescent coating and nanoparticles applied on flaxboard. In Unknown Host Publication (pp. 569-580)
Zhang, Jianping ; Delichatsios, Michael ; McKee, Maurice ; Ukleja, S. / Burning behaviour of intumescent coating and nanoparticles applied on flaxboard. Unknown Host Publication. 2010. pp. 569-580
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Zhang, J, Delichatsios, M, McKee, M & Ukleja, S 2010, Burning behaviour of intumescent coating and nanoparticles applied on flaxboard. in Unknown Host Publication. pp. 569-580, INTERFLAM 2010, 12th International Conference On Fire Science And Engineering, 1/01/10.

Burning behaviour of intumescent coating and nanoparticles applied on flaxboard. / Zhang, Jianping; Delichatsios, Michael; McKee, Maurice; Ukleja, S.

Unknown Host Publication. 2010. p. 569-580.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

TY - GEN

T1 - Burning behaviour of intumescent coating and nanoparticles applied on flaxboard

AU - Zhang, Jianping

AU - Delichatsios, Michael

AU - McKee, Maurice

AU - Ukleja, S

PY - 2010

Y1 - 2010

N2 - 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.

AB - 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.

M3 - Conference contribution

SN - 978-0-9556548-7-9

SP - 569

EP - 580

BT - Unknown Host Publication

ER -

Zhang J, Delichatsios M, McKee M, Ukleja S. Burning behaviour of intumescent coating and nanoparticles applied on flaxboard. In Unknown Host Publication. 2010. p. 569-580