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Journal of Thermal Analysis and Calorimetry

, Volume 135, Issue 6, pp 3115–3122 | Cite as

An experimental study on the fire characteristics of new and aged building wires using a cone calorimeter

  • Zhi Wang
  • Jian WangEmail author
Article

Abstract

The fire behavior of one flame-retardant PVC cable used as building wire is investigated in this work. Bench scale tests were performed using a cone calorimeter. The influence of two key factors, namely incident external heat flux and thermal aging, on the cable fire characteristics is considered. The mass fraction, heat fraction, time-to-ignition (TTI), heat release rate (HRR), emissions and residues were measured. The TTI increases with the thermal aging time, and the peak heat release rate (pHRR) decreases for aged cables. Thermal aging can modify the chemical compositions and structures, leading to further changes in combustion. The higher heat flux caused a higher HRR and a lower burning duration for the studied new and aged cables. The difference in TTI and pHRR for new and aged cables is insignificant for higher external heat fluxes. Finally, the prominent effect of thermal aging on emissions and residues was highlighted using varying external heat fluxes. This work adds to the understanding of the difference in burning performance between new and aged building wires.

Keywords

Thermal aging Electric cable Piloted ignition Cone calorimeter 

Notes

Acknowledgements

This work was supported by the National Key R&D Program of China (No. 2016YFC0802500). The authors gratefully acknowledge this support.

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Copyright information

© Akadémiai Kiadó, Budapest, Hungary 2018

Authors and Affiliations

  1. 1.State Key Laboratory of Fire ScienceUniversity of Science and Technology of ChinaHefeiPeople’s Republic of China

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