Table 2.
Weight gain, flammability and cone calorimetry results for neat and LbL-treated PU foams.
| Sample | Flammability | Cone Calorimetry | |||||||
|---|---|---|---|---|---|---|---|---|---|
| Weight Gain (%) | Melt Dripping | Flame Spread Rate (mm/s) | Residue (%) | TTI ± σ (s) | pkHRR (kW/m2) | THR (MJ/m2) | TSR (m2/m2) |
Residue (%) | |
| PU | Yes | 4.9 ± 0.4 | - | 3 ± 1 | 308 ± 25 | 10 ± 1 | 170 ± 11 | 7 ± 1 | |
| 3BL CHIT/GOA | 11 ± 2 | No | 7.3 ± 0.3 | 67 ± 1 | 2 ± 1 | 149 ± 3 | 9 ± 0.1 | 54 ± 1 | 11 ± 1 |
| 3BL CHIT/GOB | 8 ± 1 | No | 6.5 ± 0.4 | 67 ± 1 | 2 ± 1 | 163 ± 19 | 10 ± 2 | 56 ± 12 | 10 ± 1 |
| 3BL CHIT/GOC | 6 ± 1 | No | 5.9 ± 0.7 | 63 ± 1 | 2 ± 1 | 163 ± 11 | 9 ± 0.3 | 81 ± 10 | 8 ± 1 |
| 6BL CHIT/GOA | 27 ± 2 | No | 4.2 ± 0.1 | 80 ± 1 | 2 ± 1 | 143 ± 4 | 9 ± 0.6 | 40 ± 3 | 12 ± 1 |
| 6BL CHIT/GOB | 24 ± 2 | No | 4.3 ± 0.1 | 80 ± 1 | 2 ± 1 | 154 ± 9 | 11 ± 1.5 | 74 ± 27 | 12 ± 1 |
| 6BL CHIT/GOC | 12 ± 1 | No | 5.5 ± 0.6 | 70 ± 1 | 2 ± 1 | 143 ± 7 | 10 ± 1 | 64 ± 8 | 11 ± 1 |