Method for testing flame-retardant protective clothing – burning dummy test method
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Protective clothing flame retardant clothing thermometer burning dummy test system
Research on using dummies for protective clothing testing began in the 1960s with burning dummy tests The standard is ASTM 1930-2000 “Test Method for Evaluating the Flame Retardant Performance of Clothing Under Flash Fire Conditions Using a Dummy.”
In the 1970s, the DuPont Company of the United States and the U.S. Army jointly developed a combustion dummy test system-the thermal manimeter detection system, which mainly includes the following subsystems : Propane gas storage and transportation system; combustion management control system; simulator system equipped with sensors; data acquisition and analysis system; computer control system and corresponding operation interface; laboratory safety assurance system.
Using this experimental device, the human body wearing protective clothing can be completely submerged in the flame under conditions of variable heat flow. Conduct simulations and use their tests to predict the thermal protection performance of real clothing under flash fire conditions. The fire field is generated by the combustion of heptane gas with a heat flux density of 84kW/(㎡·s). A human model wearing experimental clothing is placed in a simulated combustion environment in the laboratory and exposed for a certain period of time to observe the combustion situation. At the same time, through 122 thermal sensors distributed on the human body model, the heat and temperature transmitted to various parts of the human body surface through the tested clothing are measured and calculated. The total amount and location of second- and third-degree burns on the human body are obtained, and the clothing is evaluated. thermal protection properties.
The U.S. Navy Clothing and Textile Research Institute (NCTRF) has made some improvements to the incendiary dummy. Enables the dummy to move through the fire scene. The dummy is placed in the fire scene, and then the dummy simulates the action of escaping from the fire scene and moves out of the fire scene at a specific time.
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