FK-5-1-12,known for its efficiency and cleanliness as a fire extinguishing agent,requires an effective release mode to fully utilize its capabilities.In order to assess the impact of differ-ent release modes on the performance of FK-5-1-12,a 20 mL n-heptane oil pan fire was used as a model for class B flames.The research utilized 1.2 MPa N2 filling and 2 g of nitrogen-rich gas-producing substances(NGS)to facilitate the release of FK-5-1-12.The research focused on comparing and analyzing the fire ex-tinguishing effectiveness,cooling capacity,and mechanisms of FK-5-1-12 on class B flames under these two release modes.The research revealed that application pressure had a significant impact on the fire extinguishing effectiveness of FK-5-1-12.When released through the high-pressure gas flow generated by NGS,FK-5-1-12 showed better performance in extinguishing time,cooling effect,and flame suppression compared to the N2 drive release mode.Mechanistic analysis indicated that a sub-stantial amount of FK-5-1-12 in the 1.2 MPa N2 drive did not reach the flame surface due to volatilization during release.In con-trast,FK-5-1-12 effectively reached the burning surface of the flame with the influence of the high-pressure gas flow produced by only 2 g of NGS.Upon reaching the flame,FK-5-1-12 de-composed by absorbing heat,exerted a chemical inhibition effect,and rapidly halted the combustion reaction.
关键词
全氟己酮/释放方式/B类火焰/灭火性能
Key words
FK-5-1-12/release mode/class B flame/extinguish-ing performance
维普
万方数据