Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/18715
Title: Bench-scale tests on simultaneous ignition of two different plastics through "bridge-mixing"
Authors: Chow, WK 
Han, SS
Keywords: Bench-scale fire tests
Bridge-mixing
Cone calorimetry
Flashover
Ignition
Issue Date: 2006
Publisher: Taylor & Francis
Source: Polymer-plastics technology and engineering, 2006, v. 45, no. 3, p. 361-364 How to cite?
Journal: Polymer-plastics technology and engineering 
Abstract: Bridge-mixing was proposed earlier to explain why different combustibles might be ignited simultaneously during flashover. Different fuel vapors gasified from those combustibles were ignited by thermal radiation first. Thermal feedback from flames above the combustibles would then ignite the solid. This point is further studied in this article by bench-scale tests with a cone calorimeter. Sample cubes of two materials with different ignition temperatures were tested at a high thermal radiative heat flux of 70 kWm-2. Materials selected are polymethylmethacrylate (PMMA) and polyvinyl chloride (PVC). The two sample cubes were placed on the cone tray at different separation distances. In this way, different mixing of gasified fuel vapors released from the plastics can be achieved. Those two combustibles were found be ignited simultaneously at shorter separation distances. This might explain why combustible items of different ignition temperatures appear to be ignited at roughly the same time during flashover for some scenarios. On the basis of this study, the mixing of gasified fuel vapors from different combustibles by the fire-induced airflow is a key factor in igniting each item. Geometry of the rooms, combustibles, and ventilation provisions are important factors affecting simultaneous ignition.
URI: http://hdl.handle.net/10397/18715
ISSN: 0360-2559
EISSN: 1525-6111
DOI: 10.1080/03602550600553275
Appears in Collections:Journal/Magazine Article

Access
View full-text via PolyU eLinks SFX Query
Show full item record

SCOPUSTM   
Citations

1
Last Week
0
Last month
0
Citations as of Aug 19, 2017

Page view(s)

42
Last Week
1
Last month
Checked on Aug 20, 2017

Google ScholarTM

Check

Altmetric



Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.