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以航空煤油、航空汽油、97#车用汽油为原料,采用市场上常见的水成膜泡沫灭火剂6%型及新型生物可降解水成膜泡沫灭火剂6%型,分别在四川广汉(海拔520m)、康定县城(海拔2 560m)和康定机场(海拔4 290m)开展试验,研究20℃时高高原环境对AFFF物化性能的影响,并分析其原因,对比两种AFFF受海拔高度影响的程度。研究发现两种泡沫灭火剂的表面张力、灭火剂与三种油品之间的界面张力、铺展量及发泡力均随海拔高度的上升而下降,铺展系数与析液时间则随海拔高度的升高而增大。
Using aviation kerosene, aviation gasoline and 97 # motor gasoline as raw materials, the commonly used water-forming foam fire extinguishing agent 6% and the new type of biodegradable water-forming foam fire extinguishing agent 6% are used in the market, 520m), Kangding County (elevation 2,560m) and Kangding Airport (4,290m above sea level) to study the effect of the plateau environment on the physico-chemical properties of AFFF at 20 ℃. The reasons for the differences were also analyzed. The effects of altitude on the AFFF . It was found that the surface tension of the two foam extinguishing agents, the interfacial tension, the spreading amount and the foaming power of the fire extinguishing agent with the three oils decreased with the increase of the altitude. The spreading coefficient and the time of the liquid deposition varied with the altitude Increase and increase.