What’s the difference between Fire-retardant silicone tube and other silicone tube ?

Silicone tubes are often used in industries and applications where heat and electrical conductivity are prominent. Although the third-party test report is the core to confirm the silicone tube has fire-retardant capabilities. There are also some simple test ways and you can test them anywhere. After the combustion test, the fire-retardant silicone tube has a higher ignition point.

We prepare fire-retardant silicone tubing and regular silicone tubes to test the ignition point.

First of all, we need to prepare a stable naked light, it is recommended the alcohol lamp as this is a piece of more reasonable testing equipment, while the lighter test results are not stable, so it is not recommended. The flame-retardant silicone tube and other silicone tubes can be burned on an alcohol lamp at the same time, there are obvious differences from the burning point, and combustion time, after burning.

Ignition Point: Put the flame-retardant silicone tube in the outer flame of the alcohol lamp from 500 to 600 ° (the flame is divided into the outer flame, the inner flame, and the Flame Center) . The ignition point of the flame retardant silicone tube is 50~80s.

and other non-flame-retardant silicone hoses into the outer flame about the 30s will be burning up. This test found that the flame-retardant silicone tube burning point is more than twice, and its instantaneous burning point is as high as 1000 degrees centigrade or above.

At present, the burning temperature of household appliances is basically below 1000 degrees centigrade, so the flame-retardant silicone tube used in daily life is almost not instantaneous combustion.

Flame-retardant silicone tubing has a high ignition point and is difficult to ignite (see below)

Other silicone tubes have a low ignition point and will ignite or even expand the flame when exposed to an open flame, accompanied by smoke (see below)

Combustion time: ordinary silicone tube in the combustion will accelerate and expand the height of the flame and combustion area, is not flame retardant effect which is the same as other ordinary silicone materials, after removing it from the ignition source, the ordinary silicone tube will burn on its own for a period of time about the 20s, and in the silica gel pipe ashes can be found after the sporadic flame and then extinguished. Through the in-kind combustion test, it can be clearly observed that the flame-retardant silicone tube will not spread and enlarge the flame after it is ignited by an open flame, it can extinguish itself within 3s when it is removed from the fire source. No Flame and no spark ash will appear, so it can extinguish the scattered flame automatically.

The flame-retardant silicone tube will not burn even when it is ignited and will self-extinguish when the ignition source is removed.

For other ordinary silicone tubes, the height and width of the fire source will be enlarged after the burning of other silicone tubes

After burning: extruding silicone products will appear white solid powder after burning, after burning, the inner temperature of the ordinary silicone tube will be higher, and even there will be sparks that can not be put out quickly. It needs to be completely extinguished in a few seconds. Therefore, the ordinary silicone tube can not play the role of flame-retardant in household appliances. While the flame-retardant silicone tube can effectively control the speed of flame diffusion and good self-extinguishing effect.

As the silicone itself is a relatively high burning point compared to other materials, even ordinary silicone tubing is superior to other materials in terms of both burning speed and burning point, the flame-retardant silicone tube is a special silicone material specially developed for the purpose of protecting against combustion, and its effect is obvious to all.