Technical Articles

Silicone Fabric type fire performance test method

UL94 is the standard for the flammability test of plastic parts of equipment and electrical appliances. The fireproof performance of silicone cloth is generally used in this standard, a total of 12 fire rating: HB, V-0, V-1, V-2, 5VA, 5VB, VTM-0, VTM-1, VTM-2, HBF, HF1, HF2. Among them, VTM-0, VTM-1, VTM-2 are suitable for plastic film, HBF, HF1, HF2 are suitable for foaming materials, and the fireproof performance of silicone cloth is UL-V-0: twice for the sample. After a second burn test, the flame extinguished within 10 seconds. This level is the highest.


 The UL-V-0 program for UL94 inspection is like this:


 A: No sample was burned for more than 10 seconds after the test flame was taken away.


 B: For each set of 5 samples, after 10 ignitions, the total time of burning with the flame exceeds 50 seconds.


 C: No sample has been burned to the fixture (including the burning of the flame and the burning of the red)


 D: Without any sample, the burning melted droplets drip the cotton at 12" below.


 E: There is no sample, and after a second removal of the test flame, it continues to burn red for more than 30 seconds.


 In fact, if you experiment with it yourself, the silicone cloth is not burning, and there is no flame. You can try it yourself.

Tip: Tip: This article is automatically translated by Google, the original Chinese version: https://www.jsww.net/tech/29-cn.html