product image

Perlite is not a trade name but a generic term for naturally occurring siliceous rock. To make perlite insulation, perlite ore is crushed and segregated. Then it is heated to a point in its softening range where its volume expands some 4 to 25 times due to the 2 – 6 % combined water in the ore. When rapidly heated to above 870°C (1600°F), the ore pops as this water vapourizes, creating countless partial vacuum air pockets in the heat softened glassy particles which makes expanded perlite lightweight and an excellent insulator. Expanded perlite can be manufactured to weigh as little as 32 kg/m³ (2 Ib/ft³), making it the ideal insulation for cryogenic tanks and cold boxes. In construction applications, perlite aggregates for plaster and lightweight insulating concrete have density ranges from 96 – 192 kg/m³ (6 – 12 Ib/ft³), in compliance with ASTM standards. A form of natural glass, perlite is chemically inert, with a pH of about 7. Highly resistant to heat and flame, expanded perlite is used world-wide as an efficient insulator and fire–proofing aid.
Features & Advantages
 feature image
Low Thermal Conductivity
 feature image
 feature image
Non - Combustible
 feature image
Chemically Inert
 feature image
Easy to Handle and Install
 feature image
Competitive Cost
 order / request icon

Interested in:
Slab Sectional Powder Others