Perlite products are made from an amorphous alumino-silicate rock, which has some very special properties: it contains water, which expands into steam on heating, producing a foamed structure. The type of foaming depends very much on the hardness of the particular perlite ore, and the initial concentration of water. Only a few, select deposits have the correct characteristics for expansion.
Recommended applications for Perlite:
- Paint & Coatings