Issue 33, 2023

The fire-extinguishing performance and mechanism of fluorinated cyclobutane through experimental measurement and numerical calculation

Abstract

Research and development of new fire-extinguishing agents to replace halon is very urgent, and the properties of some fire-extinguishing agents with potential application value have not been studied. The molecular structure of octafluorocyclobutane (C4F8, C-318) is a quaternary ring structure consisting of four CF2, resulting in suitable chemical activity and potential fire-extinguishing performance. However, the fire-extinguishing performance and mechanism of C-318 as a fire-extinguishing agent have not been studied in previous reports. In this paper, to explore environmentally friendly and high-performance chemical gas fire-extinguishing agents to replace halon agents, experimental measurements and theoretical calculations were performed to measure the extinguishing performance of C-318 against a methane flame and a propane flame, and to thoroughly analyze the reaction mechanism of C-318 with chain radicals. It was found that C-318 has relatively low minimum extinguishing concentrations (MECs) for suppressing methane–air (7.23 vol%) and propane–air (7.40 vol%) flames. Furthermore, combined with theoretical analysis of the decomposition mechanism and extinguishing mechanism, the feasibility of C-318 as a fire-extinguishing agent is verified, which lays a good foundation for large-scale experiments into its engineering application as a substitute for halon.

Graphical abstract: The fire-extinguishing performance and mechanism of fluorinated cyclobutane through experimental measurement and numerical calculation

Supplementary files

Article information

Article type
Paper
Submitted
05 Jun 2023
Accepted
30 Jul 2023
First published
01 Aug 2023

New J. Chem., 2023,47, 15787-15796

The fire-extinguishing performance and mechanism of fluorinated cyclobutane through experimental measurement and numerical calculation

Z. Jin and X. Zhang, New J. Chem., 2023, 47, 15787 DOI: 10.1039/D3NJ02602G

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