Research Article
Effect of Sepiolite-Loaded Fe2O3 on Flame Retardancy of Waterborne Polyurethane
Table 3
Microscale combustion data of the WPU and WPU composite samples.
| | Sample number | HRC (J/g-K) | PHRR (W/g) | Tp (°C) | THR (kJ/g) | Percentage of char (%) |
| | S-1 | 470.0 | 418.9 | 355.2 | 27.0 | 3.1 | | S-2 | 302.0 | 269.9 | 385.0 | 26.0 | 6.9 | | S-3 | 231.0 | 206.9 | 412.2 | 26.3 | 7.6 | | S-4 | 184.0 | 164.2 | 390.6 | 25.2 | 14.3 |
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