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Experimental Study on Flammability and Flame Spread Characteristics of Polyvinyl Chloride (PVC) Cable

Polyvinyl chloride (PVC) is widely applied in cables as insulation materials, which are vital for operation and control of industrial processes. However, PVC cables fires frequently occur, arousing public concern. Therefore, experimental methods are used to study flammability and flame-spread charac...

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Autores principales: An, Weiguang, Tang, Yanhua, Liang, Kai, Wang, Tao, Zhou, Yang, Wen, Zhijie
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7760872/
https://www.ncbi.nlm.nih.gov/pubmed/33255793
http://dx.doi.org/10.3390/polym12122789
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author An, Weiguang
Tang, Yanhua
Liang, Kai
Wang, Tao
Zhou, Yang
Wen, Zhijie
author_facet An, Weiguang
Tang, Yanhua
Liang, Kai
Wang, Tao
Zhou, Yang
Wen, Zhijie
author_sort An, Weiguang
collection PubMed
description Polyvinyl chloride (PVC) is widely applied in cables as insulation materials, which are vital for operation and control of industrial processes. However, PVC cables fires frequently occur, arousing public concern. Therefore, experimental methods are used to study flammability and flame-spread characteristics of PVC cable in this paper. Influences of cable structure and number are investigated, which is scanty in previous works. As cable core number of single cable or cable number of multiple cables rises, average flame height and width increase while the increment decreases. Formulas concerning dimensionless flame height and single cable diameter (or total width of multiple cables) are obtained. The former is negatively correlated with the latter. For single cable, convective heat transfer is dominant, and flame-spread rate decreases as cable core number increases. Cable maximum temperature, which drops first and then rises as cable core number increases, is observed in the cable core area. For multiple cable, the flame-spread rate increases as cable number increases. As the cable number rises, the length of pyrolysis and combustion zone increases while the maximum temperature of cable surface decreases. This work is beneficial to fire hazard evaluation and safety design of PVC cables.
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spelling pubmed-77608722020-12-26 Experimental Study on Flammability and Flame Spread Characteristics of Polyvinyl Chloride (PVC) Cable An, Weiguang Tang, Yanhua Liang, Kai Wang, Tao Zhou, Yang Wen, Zhijie Polymers (Basel) Article Polyvinyl chloride (PVC) is widely applied in cables as insulation materials, which are vital for operation and control of industrial processes. However, PVC cables fires frequently occur, arousing public concern. Therefore, experimental methods are used to study flammability and flame-spread characteristics of PVC cable in this paper. Influences of cable structure and number are investigated, which is scanty in previous works. As cable core number of single cable or cable number of multiple cables rises, average flame height and width increase while the increment decreases. Formulas concerning dimensionless flame height and single cable diameter (or total width of multiple cables) are obtained. The former is negatively correlated with the latter. For single cable, convective heat transfer is dominant, and flame-spread rate decreases as cable core number increases. Cable maximum temperature, which drops first and then rises as cable core number increases, is observed in the cable core area. For multiple cable, the flame-spread rate increases as cable number increases. As the cable number rises, the length of pyrolysis and combustion zone increases while the maximum temperature of cable surface decreases. This work is beneficial to fire hazard evaluation and safety design of PVC cables. MDPI 2020-11-25 /pmc/articles/PMC7760872/ /pubmed/33255793 http://dx.doi.org/10.3390/polym12122789 Text en © 2020 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
An, Weiguang
Tang, Yanhua
Liang, Kai
Wang, Tao
Zhou, Yang
Wen, Zhijie
Experimental Study on Flammability and Flame Spread Characteristics of Polyvinyl Chloride (PVC) Cable
title Experimental Study on Flammability and Flame Spread Characteristics of Polyvinyl Chloride (PVC) Cable
title_full Experimental Study on Flammability and Flame Spread Characteristics of Polyvinyl Chloride (PVC) Cable
title_fullStr Experimental Study on Flammability and Flame Spread Characteristics of Polyvinyl Chloride (PVC) Cable
title_full_unstemmed Experimental Study on Flammability and Flame Spread Characteristics of Polyvinyl Chloride (PVC) Cable
title_short Experimental Study on Flammability and Flame Spread Characteristics of Polyvinyl Chloride (PVC) Cable
title_sort experimental study on flammability and flame spread characteristics of polyvinyl chloride (pvc) cable
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7760872/
https://www.ncbi.nlm.nih.gov/pubmed/33255793
http://dx.doi.org/10.3390/polym12122789
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