Table 3.
Limiting oxygen index (LOI) and UL-94 results of the prepared reference and flame-retarded samples.
| No. | Sample Code | LOI [V/V%] | UL-94 |
|---|---|---|---|
| 1 | EP ref | 23 | HB (13.9 ± 6.5 mm/min) |
| 2 | EP + CNT ref | 22 | HB (23.6 ± 3.0 mm/min) |
| 3 | EP + CF ref | 33 | HB (1st ignition) |
| 4 | EP + CNT + CF ref | 30 | HB (1st ignition) |
| 5 | EP + CNF(CNT) + CF ref | 29 | HB (1st ignition) |
| 6 | EP + CNF(CNT) + CNT + CF ref | 30 | HB (2nd ignition) |
| 7 | EP FR | 32 | HB * |
| 8 | EP + CNT FR | 33 | HB * |
| 9 | EP + CF FR | 42 | HB (2nd ignition) |
| 10 | EP + CNT + CF FR | 40 | HB (2nd ignition) |
| 11 | EP + CNF(CNT) + CF FR | 39 | V-1 |
| 12 | EP + CNF(CNT) + CNT + CF FR | 39 | V-0 |
* burning time longer than that of V-2.