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Your location: Home > Related Articles > Flame Retardant Testing of Automotive Interior Materials with a Horizontal Combustion Tester

Flame Retardant Testing of Automotive Interior Materials with a Horizontal Combustion Tester

Author:QINSUN Released in:2023-09 Click:115

The horizontal burning tester is suitable for measuring the relative burning rate, flame retardancy and horizontal burning performance of various kinds of textile fabrics, garments, tents, etc., especially automotive interior fabrics. Refer to GB/T8410 test method, qisnun Precision Electromechanical Technology Co., Ltd. is a manufacturer and welcomes customers who need to call us in time.

Main parameters:

1. Flame application time: 0-999.9 s ± 0.1 s adjustable;

2. Flame delay time: 0-99h59m59. 99 s ± 0.1 s, manual start/pause;

3. Test wind speed: The vertical airflow speed of 100mm before and after the combustion box is between 0.10m/s and 0.30m/s , and changes are made to the right side of the equipment anemometer. monitors the catch;

4. Gas lamp: the inner diameter is 9.5mm, the center of the bThe lamp mouth is 19 mm below the center of the free end of the sample and can ignite automatically;

5. Gas: Use liquefied gas or other combustible gas (succ.h like natural gas, city gas) with combustion calorific value of 35MJ/m3~38MJ/m3;

 6. Power supply: 220VAC- 15%~220VAC+10%, 500W (single phase three phase) wire system).

Test principle:

Fix the sample horizontally on the U-shaped holder in the test box. combustion After igniting the free end of the sample with a flame of a specified height for 15 seconds, determine if or when the flame on the sample is extinguished, as well as the burning distance of the sample and the time required to burn this distance.

Test Steps:

1. Remove the pretreated sample, place the sample with raised or tufted surface flat on a flat table and useUse a metal plate that meets the requirements. . Comb the nap surface twice in the opposite direction of the hair.

2. Light the gas lamp with the air inlet of the gas lamp closed and adjust the flame according to the flame height marking plate so that the height of the flame is 38 mm. Before starting a test, the flame must burn stably in this state for at least 1 minute and then go out.

3. Place the sample in the sample holder with the exposed side down. Install the sample so that both sides and one end are clamped by the U-shaped bracket and the free end is aligned with the opening of the U-shaped bracket. When the width of the sample is insufficient and the U-shaped bracket cannot clamp the sample, or the free end of the sample is soft and easy to bend, which will cause unstable combustion, the sample is placedon a specimen holder with a heat-resistant metal wire for the burning test. .

4. Push the sample holder into the combustion box, place the sample in the center of the combustion box and place it in a horizontal position. Light the gas lamp with the gas lamp air inlet closed, and make the flame height 38mm, place the free end of the sample into the flame to light for 15 seconds, then extinguish the flame (close the valve of the gas lamp) .

5. The flame is released from the sample. Hold it and burn it forward, and start timing when the root of the spreading flame passes a marking line. Be careful to observe the flame spread on the fastest burning side, and the timing is based on the fastest spreading side of the flame.

6. When the flame reaches the second marking line or goes out beforeUntil the flame reaches the second marking line, the timing will be stopped at the same time and the timing will be based on the side where the flame is spreading the fastest. If the flame goes out before reaching the second mark, measure the burning distance from the first mark to when the flame goes out. The burning distance refers to the length of the burned part on the surface or inside the sample.

7. If the unexposed surface of the sample is cut, the timing should be based on the flame propagation speed of the exposed surface.

8. The burning rate requirement does not apply to the area formed by the cut the sample.