How can plastic be made incombustible?

Is PLEXIGLAS® flammable?

Vandalism and fire - considerations when buying PLEXIGLAS®

PLEXIGLAS® is very popular as a replacement for conventional glass due to its high impact strength. It takes brute force to break PLEXIGLAS®. But there is another danger lurking in public spaces: mischief. One shape in particular shows the vulnerable side of PLEXIGLAS®, namely its sensitivity to open fire. Pay attention to how often you see traces of fire on the bus, on the tram or in the bus shelters because someone has held a lighter against the glass. Polycarbonate is often used as glazing in places where this type of vandalism is lurking.

Since PLEXIGLAS® is flammable, it is not suitable for places where there is great heat, open flames or sparks. This is not only the case with open fireplaces or stoves, but also with a lot of work in a workshop. Just think of welding, flame soldering, grinding, etc. The danger of sparks lurking everywhere. PLEXIGLAS® does not start to burn immediately when exposed to sparks, but sparks are sure to burn in, which makes the material smolder.

Harmless if burned

Each disadvantage has its advantage, and with PLEXIGLAS® it is advantageous that when it burns it burns completely to form water vapor and carbon dioxide, both of which are completely harmless substances. When PLEXIGLAS® is burned, hardly any smoke will be produced and the smoke gases are completely harmless. Burning PLEXIGLAS® can be extinguished with conventional extinguishing agents such as water and foam. Smaller fires, such as flames caused by burned-in sparks, can usually even be blown out like a candle.

In summary, it can be said that PLEXIGLAS® is flammable but harmless if burned.

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