Standards to the Protection against Heat and Flame

EN 15025 is a procedure to measure the propagation behavior of a limited flame on textiles (vertically aligned) and industrial products as single and multicomponent textiles.

The textile surface is exposed to a defined flame for 10 seconds, to evaluate the propagation, the afterglow and the final state of the material after the procedure.

EN 6942 describes the method of material evaluation, which are exposed to a source of heat & radiation.

The test procedure is used to evaluate the material changes, after the exposure to the radiation.

EN 367 determines the heat transition during the flame impact on protective clothes.

Materials are ranked by calculating a heat transfer index, which is an indication of the relative protection under specified test conditions.

The Thermal Protection Performance Test (TPP): Rating according to ISO 17492:2003 "Clothing for protection against heat and flame. Determine the heat transition under influence of flame and heat radiation. “

The TPP-test simulates typical fire conditions through the combination of convective heat and radiant heat. Therefore, a specimen is exposed to typical fire conditions: The heat source consists of 50 % convective heat and 50 % radiant heat. The heat flow adds up to 84 kW/m² (approximately 2 cal/cm²/sec.). The test determines the time and applied heat energy per unit area (TPP) on the back of the textile that would result in second degree burns on the skin.

The Total Heat Loss Test (THL): Rating according to DIN EN ISO 11092/ASTM F1868-02 “Measurement of the heat and steam contact resistance under steady-state conditions.”

The sweating guarded hotplate, often referred to as a ”skin model”, is designed to produce accurate, repeatable measurements of the thermal resistance and water vapor resistance (or permeability) of textiles under steady-state conditions. These measurements can be conducted separately or simultaneously whereupon different environmental conditions in form of specific combinations of temperature, relative air humidity, air velocity, and aggregate state (aerially or liquid) can be used.

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