Table 5.
Flammability test data of the neat PP and its composites.
| Sample | PP% | AFR% | APP% | UL94 | drip |
|---|---|---|---|---|---|
| PP neat | 100 | 0 | 0 | N/R | Yes |
| F1-5a | 75 | 25 | 0 | N/R | Yes |
| F1-5b | 75 | 25 | 0 | N/R | Yes |
| F1-5c | 75 | 25 | 0 | N/R | Yes |
| F2-5a | 75 | 12.50 | 12.50 | V2 | Yes |
| F2-5b | 75 | 12.50 | 12.50 | V2 | Yes |
| F2-5c | 75 | 12.50 | 12.50 | V-2a | Yes |
| F3-5a | 75 | 8.33 | 16.66 | V1c | NO |
| F3-5b | 75 | 8.33 | 16.66 | V1 | NO |
| F3-5c | 75 | 8.33 | 16.66 | V0b | NO |
| F1-7a | 75 | 25 | 0 | N/R | Yes |
| F1-7b | 75 | 25 | 0 | N/R | Yes |
| F1-7c | 75 | 25 | 0 | N/R | Yes |
| F2-7a | 75 | 12.50 | 12.5 | V2 | Yes |
| F2-7b | 75 | 12.50 | 12.5 | V2 | Yes |
| F2-7c | 75 | 12.50 | 12.5 | V2 | Yes |
| F3-7a | 75 | 8.33 | 16.66 | V1 | NO |
| F3-7b | 75 | 8.33 | 16.66 | V1 | NO |
| F3-7c | 75 | 8.33 | 16.66 | V0 | NO |
V-0: rating is the highest flame-retardant rating; V-1: rating allows non-flaming drips and V-2: allows flaming drips.