There are many ways to test the performance of flame retardant fabrics, such as horizontal method, vertical method, 45° tilt method, etc.
Today we will talk about the characteristics of three testing methods.
45° tilt method: This test method stipulates that the sample is placed at a 45° tilt (the length direction of the sample forms a 45° angle with the horizontal line), and the combustion source is ignited on the upper or lower surface below the sample. To burn a sample, measure the time it takes for the sample to burn a certain distance upward, or measure the afterburning, flame retardant time, flame spread speed, carbonization length, and carbonization area after the sample burns, or measure the distance from the sample burning to the lower end of the sample. The 45° tilt method is mainly used for flame retardant testing of carpets and other fabrics.
Horizontal method: This test method requires that the sample be placed horizontally, ignite at the head end of the sample, measure the distance the flame spreads on the sample and the time it takes to spread this distance, and calculate the burning rate. Burning rate is used to characterize the flame retardancy of fabrics. The horizontal method is mainly used for flame retardant testing of automotive interior decoration materials.
Vertical method: This test method stipulates that the sample is placed vertically (the length direction of the sample is perpendicular to the horizontal line), the combustion source ignites the sample below the sample, and the minimum ignition time of the test sample is , afterburning time, flame retardant time, flame spread speed, charring length (damage length), charring area (damage area) and other indicators related to flame retardant performance. The vertical burning method is mainly used for flame retardant testing of clothing textiles, curtains and other fabrics.
The so-called performance of flame-retardant fabrics depends on the degree of damage when exposed to open flames. If the burning time of the fabric is shorter and the damaged area is smaller, it means that the performance of this flame retardant fabric is better. On the contrary, the performance of this flame retardant fabric is relatively poor.
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