1
|
Yang Q, Zhang J, Gao Y, Zhou X, Zhang H. Toward Better Halon Substitutes: Effects of H Content on Pyrolytic and Fire-Suppressing Mechanisms of Ozone-Friendly Fluorinated Alkanes. J Mol Struct 2023. [DOI: 10.1016/j.molstruc.2023.135506] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/05/2023]
|
2
|
Zhong W, Zhao M, Zhao J, Wang F, Gao Z, Bian H. Exploring the kinetics and mechanism of C2F5C(O)CF(CF3)2 reaction with hydrogen radical. Chem Phys Lett 2022. [DOI: 10.1016/j.cplett.2022.140130] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
|
3
|
Zhang H, Wang Y, Wang X, Zhou S, Yu R, Liao Y, Li J, Tan Z. Thermal Decomposition Mechanism and Fire-Extinguishing Performance of trans-1,1,1,4,4,4-Hexafluoro-2-butene: A Potential Candidate for Halon Substitutes. J Phys Chem A 2020; 124:5944-5953. [PMID: 32567315 DOI: 10.1021/acs.jpca.0c04036] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
In view of the appropriate physicochemical characteristics and environmental friendliness of the 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 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 that of 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 makes a significant contribution to capturing the free radicals in the flame, as well as cooling and diluting the combustible fuel-air mixture. Both 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 utilization.
Collapse
Affiliation(s)
- Haijun Zhang
- Center for Aircraft Fire and Emergency, Department of Safety Engineering, Civil Aviation University of China, Tianjin 300300, P. R. China
| | - Yue Wang
- School of Chemical Engineering and Technology, Hebei University of Technology, Tianjin 300130, P. R. China
| | - Xingyu Wang
- Center for Aircraft Fire and Emergency, Department of Safety Engineering, Civil Aviation University of China, Tianjin 300300, P. R. China
| | - Suting Zhou
- Center for Aircraft Fire and Emergency, Department of Safety Engineering, Civil Aviation University of China, Tianjin 300300, P. R. China
| | - Rourou Yu
- School of Chemical Engineering and Technology, Hebei University of Technology, Tianjin 300130, P. R. China
| | - Yunlong Liao
- Center for Aircraft Fire and Emergency, Department of Safety Engineering, Civil Aviation University of China, Tianjin 300300, P. R. China
| | - Jingde Li
- School of Chemical Engineering and Technology, Hebei University of Technology, Tianjin 300130, P. R. China
| | - Zhaoyang Tan
- School of Chemical Engineering and Technology, Hebei University of Technology, Tianjin 300130, P. R. China
| |
Collapse
|