WelcomeWebsite! If you have any questions, please call !
Flammability tester,burning tester,Fire Retardant Fabrics Tester_QINSUN

Hotline:

Product

News

Company:-Qinsun Instruments Co., Ltd.
Phone:+86-17740808215
Tell:+86-21-6780 0179
Email:info@qinsun-lab.com
Address:No.2578 Minhang District Gu Dai Road, Shanghai

Detailed analysis of fabric horizontal burning tester

Position: Home > News

Detailed analysis of fabric horizontal burning tester

Author: Date :2021-02-05 Views: order
The fabric horizontal burning tester is mainly used to qualitatively evaluate the flammability of single materials or laminated composite materials used in automobile interiors.

Detailed analysis of fabric horizontal burning tester(图1)

 
 
Test procedure of fabric horizontal burning tester
Test steps:
1. Take out the pretreated sample, place the sample with fuzzing or tufting on the flat table, and comb it twice along the opposite direction of fluff on the fuzzing surface with a specified metal comb. Ignite the gas lamp with the air inlet of the gas lamp closed, and adjust the flame according to the flame height indicator plate, so that the flame height is 38 mm. Before starting * tests, the flame should burn stably in this state for at least 1min, and then extinguish. Install the exposed surface of the sample down into the sample holder. Install the specimen so that its two 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, the U-shaped bracket can't clamp the sample, or the free end of the sample is soft and easy to bend, which will cause unstable combustion, the sample will be placed on the sample bracket with heat-resistant metal wire for combustion test.
 
2. Push the sample holder into the combustion box, and place the sample in the center of the combustion box in a horizontal position. Ignite the gas lamp with its air inlet closed, make the flame height 38mm, make the free end of the sample in the flame for ignition for 15s, and then extinguish the flame (close the valve of the gas lamp). The flame burns forward from the free end of the sample, and the timing starts at the moment when the root of the propagating flame passes through the * mark. Pay attention to observe the flame propagation on the fast burning side, and the timing shall be based on the fast flame propagation side.
 
3. When the flame reaches the second marking line or goes out before reaching the second marking line, stop timing at the same time, and the timing shall be based on the side where the flame spreads faster. If the flame goes out before reaching the second marking line, measure the burning distance from the * marking line to when the flame goes out. 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 is cut, the timing shall be based on the flame propagation speed of the exposed surface. The requirement of burning speed does not apply to the surface formed by cutting samples. If the sample burns slowly for a long time from the timing, the test can be stopped when the test timing is 20min, and the burning time and burning distance can be recorded. When carrying out a series of tests or repeated tests, the high temperature in the combustion chamber and the sample support zui before the next test should not exceed 30℃.
 
5. Calculate the combustion speed (v) according to the following formula:
V=60×(L/T)
In which:
V-combustion speed, in millimeters per minute (mm/min);
L-burning distance, in millimeters (mm)

Phone:+86-17740808215 Tell:+86-21-6780 0179 Address:No.2578 Minhang District Gu Dai Road, Shanghai Email:info@qinsun-lab.com sitemap