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A propane burner test for passive fire protection (PFP) formulations containing added halloysite, carbon nanotubes and graphene

Lookup NU author(s): Professor Geoffrey Gibson, Wan Wan Jusoh, Dr George Kotsikos



This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License (CC BY-NC-ND).


Passive fire protection materials (PFP) have been characterised quantitatively using a constant heat flux propane burner test, with the PFP attached to a steel substrate. The burner test was able to produce a large, constant heat flux, to simulate a severe fire condition. The heat transferred through the PFP was calculated from the temperature rise of the steel. A simplified model is discussed, to account for different combinations of substrate thickness, PFP thickness, heat flux and exposure time. It was found that, despite the complex processes of resin decomposition and intumescence, heat transmission could be modelled, to a reasonable approximation, by treating the PFP as a material with single point values of apparent thermal diffusivity and conductivity. This leads to an equation that can be used to characterise PFPs and indeed to specify their required thickness.The burner test was employed to interpret the effects of adding small quantities of three nano-materials: halloysite nanotubes (HNT), multi-walled carbon nanotubes (MWCNT) and graphene nanoplatelets (GNP), to a standard PFP formulation. It was found that HNT addition resulted in a significant performance improvement, whereas the other nano-materials did not produce an improvement.

Publication metadata

Author(s): Gibson AG, Wan-Jusoh WNB, Kotsikos G

Publication type: Article

Publication status: Published

Journal: Polymer Degradation and Stability

Year: 2018

Volume: 148

Pages: 86-94

Print publication date: 01/02/2018

Online publication date: 17/01/2018

Acceptance date: 13/01/2018

Date deposited: 22/01/2018

ISSN (print): 0141-3910

ISSN (electronic): 1873-2321

Publisher: Elsevier


DOI: 10.2016/j.polymdegradstab.2018.01.13


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