The influence of iodinated fire suppressants on shock-induced ignition of acetylene– and methane–oxygen mixtures

ABSTRACT

In this work, the influence of additives of iodinated hydrocarbons trifluoroiodomethane (CF₃I) and 1-iodoperfluoropropane (C₃F₇I) on shock-induced ignition of acetylene and methane was experimentally investigated. The observed temperature dependencies of induction times indicate that both suppressants show noticeable inhibiting activity in acetylene, but reduce the ignition delay time in methane, similarly to previously studied halogenated fire suppressants CCl₄, CF₃H, and C₂F₄Br₂.

KEYWORDS:

• Ignition inhibition
• Halogenated hydrocarbons fire suppressants
• Acetylene
• Methane
• Shock waves

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Funding

This work was supported by the Russian Science Foundation project 14-19-00025.