Black Mastic
Black Mastic: Anhui Huichang also produces various accessories for insulation project.
| Property | Unit | Technical Data |
| Color | Black | |
| Ave. Density | Kg/m³ | 1300 |
| Fire Resistance | It causes no spark during construction, fire resistant after drying, and extinguishes within 1s after fire source taken away | |
| Heat Durability | There is no signs of flowing or foaming, after it is placed at the angle of 45° Cat the temperature of 95° C for 4 hours, and then for anther 1 hour at the temperature of 120° C | |
| Freeze-thaw Resistance | No cracks or peeling off occur after suspended at -40° Cand +60° C for 2hrs respectively | |
| Water Absorption | The water absorbed is less than0.5%(by weight)after soaking for 24hrs at room temperature | |
| Drying Time | It Can be touched with fingers after 5hrs, while it costs 7 days to dry completely | |
| Volatile Substance | 30± 5% | |
| Oxygen Index | > 30(OL) | |
| Adhesive Strength | 20° C 2.5kg/m² | |
| Prolongation Rate | 3% | |
| Service Temperature | -60~95° C | |
It has following features: airtight ,vapor stop , water proof , freeze resistance , corrosion protection , and not easy to age or crack . It could be applied at normal temperature and resist to combustion after being dried .It is a kind of ideal vapor barrier material ,to be applied together with insulation ,such as cellular glass ,PU and PIR in petrochemical industry.
Black Mastic
