Study on stability and flame retardant performance of nano-silica three-phase Class A flame-retardant foam
In order to make Class A foam fire extinguishing agent have stronger stability at critical micelle concentration(CMC)and show better fire prevention and extinguishing performance,a three-phase Class A flame-retardant foam was developed by combining nano-silica with Class A foam fire extinguishing agent.The stability of three-phase Class A flame-retardant foam was tested by the volume and rate of liquid separation,and the flame-retardant efficiency of the three-phase Class A flame-retardant foam was tested by acting on wood strips.The results show that the liquid separation volume of three-phase Class A flame-retardant foam is affected by the mass fraction of nanoparticles.The average mass loss rate of wood strips soaked with three-phase Class A fire flame-retardant foam is lower than that of soaked wood strips and soaked wood strips with Class A fire flame-retardant foam.Although the average mass loss rate of 2.0%three-phase Class A flame-retardant foam experimental group is slightly higher than that of 2.5%experimental group,2.0%three-phase Class A flame-retardant foam shows more significant flame-retardant efficiency stability;The"red carbon phenomenon"of wood strips soaked with three-phase A flame-retardant foam is less and the flame is slight,which can effectively reduce the carbon residue after wood burning the strips.Compared with Class A fire-extinguishing foam,the three-phase Class A flame-retardant foam added with gas-phase hydrophilic nano-silica has obvious advantages in stability and flame retardant efficiency,and the research results can provide scientific basis for the research and development of high-efficiency forest fire protection foam.
forest fire preventionnano-silicathree-phase Class A flame-retardant foamliquid separation characteristicsquality loss ratered carbon phenomenonflame retardant efficiency
国家科技期刊平台
NSTL
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