Perlite P15 Medium
Applications
- Textured coatings
- Lightweight plasters and renders
- Refractory applications and fireproofing compounds
- Cast in-situ chimney lining
- Acoustic compounds
- Bonded shapes
- Castables
Chemical Properties
| Compound | Percentage |
|---|
Perlite P15 is an aluminium silicate. Typical composition is:
| Silicon | 73% |
| Aluminium | 15% |
| Iron (Fe2O3) | 2% |
| Sodium (Na2O) | 3% |
| Potassium (K2O) | 5% |
| Calcium (CaO) + Magnesium (MgO) | 1% |
| Others | 1% |
| Organic Matter | nil |
| Moisture Content (when packed) | < 0.8% |
Physical Properties
Expanded Perlite P15 is white with a nominal particle size of 0.15 - 3.0 mm.
| Refractive Index | 1.5 |
| Free Moisture (max) | <0.5% |
| pH of Water Slurry | 6.5 - 7.5 |
| Softening Point | 890 - 1100oC |
| Fushion Point | 1280 - 1350oC |
| Specific Heat | 837 J kg -1 K-1 |
| Thermal Condcuctivity (loose poured) | 0.05 w/mC |
| Bulk Density (Loose Poured) | 90 - 130kg m-1 |
Typical Grading
| Sieve Size | % by weight passing |
| 2.360 | 85 - 100 |
| 1.700 | 65 -90 |
| 1.180 | 50 - 75 |
| 0.600 | 25 - 50 |
| 0.300 | 0 - 25 |
| 0.150 | 0 - 10 |
Note: Nominal particle size indicates the 80% band i.e. up to 10% above of below the specified range
