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Vermiculite board has good fireproof and non-combustible functions. The non-combustible fire rating is A1 grade which is the highest grade. It mostly used for higher fire protection requirements building, such as hotel, office building, shopping mall, school, hospital, laboratory etc.
Vermiculite fireproof board characteristic:
1. Environmental friendly. Non-toxic and zero radioactivities, non-asbestos
2. Excellent fireproof, according with GB 12955-2008 Class A1
3. Light-weight, heat and sound insulation
4. Easy to cut saw
5. Continuous working temp: under 1100 centigrade
6. Accurate thickness and size
Si | Al | Fe2O3 | TiO2 | MgO | GaO | K2O | Na2O | Loss on ignition @1000°C |
41.20% | 12.68% | 4.06% | 1.33% | 24.22% | 0.96% | 5.97% | 1.60% | 6.0~7.5% |
Maximum service temperature (°C) | 1100 |
Continuous working temp (°C) | 1000 |
Compressive strength (Mpa) | 0.8-3 |
Total porosity (%) | 60-74 |
Liner reheat shrinkage(24H @ 900°C %) | <3 |
Thermal conductivity (W/mk) |
|
200°C | 0.1-0.4 |
400°C | 0.12-0.16 |
600°C | 0.14-0.18 |
