Several simple test methods for flame retardant fabrics

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flame retardant fabric flame retardant fabric

Several simple test methods for flame retardant fabrics 1. Match test method
The match test method can evaluate the flame retardant effect of flame retardant fabrics or relatively compare the flame retardant properties. During the test, take a strip of fabric about 2.5cm x 30cm, use a lit match, place it under the strip sample, burn until the match burns out, and observe the condition or flame retardant effect of the flame-retardant fabric. Sometimes it can be stipulated that the sample does not burn for more than 5 seconds to be qualified, and if it exceeds the center line or smolders for more than 15 seconds, it is deemed to be unqualified. 2. Lighter test method: The size of the sample can be determined according to the test needs. The heat source is a lighter, and the time is generally 5 seconds. The heat source can be placed in a location similar to the application conditions. After the fire is extinguished, observe the spread of the flame. If the flame spread is not serious, it is qualified. 3. Ethanol combustion test method: The heat source is 0.3mL absolute ethanol, which is placed in a small burning cup (a bottle cap is also acceptable). The flame-retardant fabric test can be carried out using the vertical method, the horizontal method or the 45-degree tilt method, ethanol and fabric. The distance is 2.5cm, which can be determined according to the requirements when measuring indicators, such as char length, burning area, afterburning time, smoldering time and the residue of the burned material, etc.
4. Tablet test method
The flame retardant fabric test uses hexamethylenetetramine tablets (made by pressing powder), with a mass of 150 mg and a diameter of 6 mm. During the test, place the tablet in the center of the sample, lightly touch the surface of the tablet with a lit match, and observe whether the ignited flame burns out or flameless combustion extends to the edge of the hole in the metal plate, which is the end point of the test. Use a ruler to measure the maximum distance from the center of the sample to the edge of the damaged area, and record the time it takes for the tablet to ignite until flame or flameless combustion extends to the edge of the metal plate. 5. Hot metal nut method: Heat a stainless steel hexagonal nut (30±2g) to 950°C in an electric furnace, take out the nut with crucible tongs, and immediately place it in the center of the sample and keep it in contact for 30 seconds Then remove the nut. Measure the flaming burning time, smoldering time and the time required from the nut placement point to the ignition point to record the spiral width to the edge of the pressure ring. This method is suitable for testing various floor covering fabrics.
：Textile

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