MI-15® is a low density, room temperature curing, ablator/insulator which has been used extensively for thermal protection on aircraft
and launch vehicles. In aircraft engine applications, continuous use temperatures range between 300-600°F. The MI-15® material has
been certified for fire proof protection of fan thrust reversers per FAR Part 25.1181a and FAA Advisory Circular AC 20-135.
The material is a filled elastomeric silicone which is available in either a sprayable or trowelable form. The sprayable material (Type I)
can be applied using standard spray equipment for large area primary applications. The trowelable/moldable material (Type II) can be
used for small area applications or as a repair material for damage to the sprayable insulation .
Mixing for MI-15® Type II (trowelable):
MI-15® is supplied in pre-measured kit form.
Thoroughly mix the Parts B & C together. Thoroughly mix Part
A using polyethylene gloves (knead like dough). Place Part
A on polyethylene sheet or in a container and incrementally
blend in the Part B & C mixture. Knead the mixture like bread
dough using polyethylene gloves.
If less than a whole kit is desired, the kits can be broken
down by mixing at a ratio of 100: 0.64: 10 parts by weight for
the Parts A : B: C.
