Applicable Scope:

Automotive interior combustion tester suit for seat cushions, seat backs, seat covers, seat belts, headrests, armrests, flexible folding roofs, all decorative linings, dashboards, utility boxes, interior cargo shelves, or rear window countertops, curtains, floor coverings, etc.

Meet the standards:

GB 8410, ISO 3795, FMVSS 302, DIN 75200, SAE J369, ASTM D5132, JIS D 1201, AU 169

Test steps:

1. Take out the pre-treated samples, place the surface fluff or tufted samples flat on the flat table, and comb them twice along the opposite direction of the fluff with specified metal comb on the fluff surface.Light the gas lamp when the air inlet of the gas lamp is closed. Adjust the flame according to the flame height marker plate to make the flame height 38mm.The flame should burn steadily in this state for at least 1min before starting the first test and then go out.Load the exposed surface of the sample into the sample bracket face down.Install the specimen so that both sides and one end are clamped by the U-shaped bracket, and the free end is aligned with the u-shaped bracket opening.When the specimen width is insufficient, the U-shaped bracket cannot clamp the specimen, or the soft and flexible free end of the specimen will cause unstable combustion, the specimen shall be placed on the specimen bracket with heat-resistant metal wire for combustion test.

2. Push the sample support into the combustion chamber. Place the sample in the center of the combustion chamber and place it in a horizontal position.Light the gas lamp when the air inlet of the gas lamp is closed, and make the flame height be 38mm, make the sample free end in the flame to ignite for 15s, and then turn off the flame (close the gas lamp valve).The flame burns forward from the free end of the sample, and the timing starts at the moment when the propagating flame root passes the first line.Pay attention to the flame propagation on the fast burning side, the time to the flame propagation on the fast side.

3. When the flame reaches the second line or goes out before the flame reaches the second line, the timing shall stop at the same time. The timing shall also be based on the side where the flame travels faster.If the flame is extinguished before reaching the second line, measure the burning distance from the first line to the time the flame is extinguished.Combustion distance refers to the length of the burned part on the surface or inside of the sample.

4. If the non-exposed surface of the sample has been cut, the timing shall be based on the flame propagation speed of the exposed surface.The combustion velocity requirement does not apply to the surface formed by cutting the sample.If the sample burns slowly for a long time starting from timing, the test can be stopped when the test timing is 20min, and the combustion time and combustion distance can be recorded.When a series of tests or repeated tests are carried out, the maximum temperature in the combustion chamber and specimen holder shall not exceed 30℃ before the next test.

5. Calculation of combustion velocity (V)

V = 60 x (L/T)

V-- Combustion rate in millimeters per minute (mm/min);

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