Abstract Cis-1,1,1,4,4,4-hexafluoro-2-butene (HFO-1336mzz(Z)) conforms the most of necessary requirements as an environment-friendly extinguishant. However, its fire suppression performance has not been investigated. In this study, the fire suppression effectiveness of HFO-1336 was evaluated by a cup burner apparatus. The extinguishing concentration indicates nonpositive correlation with the fuel flow. On the other hand, to characterize the heat release of the reaction kernel, the temperature of the flame base was measured. The results showed that the temperature increased with HFO-1336 loading in the range of 2–5 %, while decreased as the concentration exceeded 5 %. In addition, the thermal decomposition properties of HFO-1336 were investigated over a temperature range of 100–800 ℃ and the products were analyzed by GC–MS. According to the detected products, the possible decomposition pathways were proposed and the extinguishing mechanism were discussed.

中文翻译：

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HFO-1336mzz(Z)抑制丙烷杯式燃烧器火焰及其热稳定性研究

摘要 Cis-1,1,1,4,4,4-hexafluoro-2-butene (HFO-1336mzz(Z)) 作为一种环保型灭火剂，符合大多数必要的要求。然而，其灭火性能尚未得到研究。在这项研究中，HFO-1336 的灭火效果是通过一个杯形燃烧器装置来评估的。灭火浓度表示与燃料流量非正相关。另一方面，为了表征反应内核的热释放，测量了火焰底部的温度。结果表明，温度随 HFO-1336 负载量在 2-5% 范围内升高，而随着浓度超过 5% 而降低。此外，还研究了 HFO-1336 在 100-800 ℃ 温度范围内的热分解性能，并通过 GC-MS 分析了产物。