Standard Test Method for Measuring Heat Transmission Through Flame-Resistant Materials for Clothing in Flame Exposure Using a Cylindrical Specimen Holder

Importancia y uso:

5.1 This test method is intended for the determination of the cylinder heat transfer performance value of a flame-resistant material or combination of materials when exposed to a continuous and constant heat source. This is used to compare materials used in flame-resistant clothing for workers when exposed to combined convective and radiant thermal hazards.

Note 3: Air movement at the face of the specimen and around the calorimeter can affect the measured heat transferred due to forced convective heat losses. Minimizing air movement around the specimen and test apparatus will aid in the repeatability of the results.

5.2 This test method maintains the specimen with and without air gaps in a static, horizontal position and does not involve movement unless the test specimen naturally changes due to the thermal exposure.

5.3 This test method specifies a standardized 84 ± 2 kW/m² (2 ± 0.05 cal/cm²·s) exposure condition. Different exposure conditions have the potential to produce different results. Use of other exposure conditions that are representative of the expected hazard are allowed but shall be reported with the results, along with a determination of the exposure energy level stability.

5.4 This test method does not predict skin burn injury from the heat exposure.

5.5 This test method is similar to Test Method F2700 in that it uses the same energy heat source, water-cooled shutter, data acquisition, and measures the heat transfer through protective clothing materials using a copper calorimeter. This test method differs from Test Method F2700 in the usage of an eccentric instrumented cylinder mounted horizontally that allows for the thermal shrinkage of materials when tested.

Subcomité:

F23.80

Volúmen:

11.03

Número ICS:

13.220.40 (Ignitability and burning behaviour of materials and products), 13.340.10 (Protective clothing)

Palabras clave:

apparel; cylinder; fire; flame testing; flammability; heat transfer performance value; instrumented flammability testing; protective clothing; textile; thermal energy ratio; thermal heat protection; thermal testing;