Silica aerogel and Aerogel felt are both comprised entirely of silica molecules, which are non-combustible, and able to withstand high temperatures. In addition, due to the material’s low density, it is over 90% air, and nano sized pores it has very low thermal conduction and convection. Due to the material’s high surface area, around 700 sq meters per gram, it also is reflective to radiated energy.
Silica aerogel is also very stable at high temperatures, up to 1200°C in inert atmospheres, although in normal conditions structural changes may start around 800°C. It is resistant to thermal shock and able to withstand rapid temperature changes.
Silica Aerogel is so efficient as an insulator that it will feel cool to the touch even when subjected to high temperatures. This is true for Aerogel felt and coatings. This is known as “safe-touch” which is very useful where it is used to protect hot equipment, piping etc.
Kavi Aerogel felt has been tested to ASTM E136 and CAN/ULC S135 and is deemed non-combustible. It has flame spread and smoke developed ratings of zero.
Levron Aerogel Felt is used for thermal insulation. Levron Aerogel felt is also fire resistant. In this video fire resistance ability is compared with glass-wool and mineral-wool.
5cm mineral-wool, 4cm glass-wool, 2cm Levron Aerogel Felt (glass-wool based) were exposed to 1000°C flame. Mineral-wool and glass-wool failed around the 9th minute. The experiment was stopped after Levron Felt was observed to be unaffected.
In this experiment shows that fire protection layer can be thinner using Levron felt.
Levron Aerogel Felt lasts longer than other protective materials.
Levron Aerogel Felt provides fire protection with a thin layer.