Citation

Zhang H, Wang Y, Wang X, Zhou S, Yu R, Liao Y, Li J, Tan Z. J. Phys. Chem. A 2020; ePub(ePub): ePub.

Copyright

(Copyright © 2020, American Chemical Society)

DOI

10.1021/acs.jpca.0c04036

PMID

32567315

Abstract

In view of the appropriate physicochemical characteristics and environmental friendliness of trans-1,1,1,4,4,4-Hexafluoro-2-Butene (HFO-1336mzz(E)) substance, the thermal-decomposition mechanism, as well as the fire-extinguishing mechanism and performance of this agent were systematically studied by employing both the experimental and theoretical methods in this work. We found that the HFO-1336mzz(E) agent not only has promising thermal stability at room temperature, but also exhibits pronounced fire-extinguishing performance, which is comparable to the HFC-236fa and even better than that of HFC-125 extinguishant. Additionally, the promising fire-extinguishing performance of HFO-1336mzz(E) may result from the physical and chemical extinguishing effect of its thermal-decomposition products including HFO-1336mzz(Z), HC≡CCF3, CF3C≡CCF3 and CF3H, which make a significant contribution to capturing the free radicals in the flame, as well as cooling and diluting the combustible fuel-air mixture. Both the experimental and theoretical results suggest that the HFO-1336mzz(E) agent is a highly recommendable candidate for Halon extinguishant, which is worthy of further investigation and evaluation of its practical applicability in fire-suppression utilizations.

Language: en