Research Article
Mechanical Properties and Flame Retardancy of Epoxy Resin/Nanoclay/Multiwalled Carbon Nanotube Nanocomposites
Table 3
Results of flammability tests (reaction to small flame): oxygen index (OI) and UL 94 for nanocomposites.
| | Trial | Material | MWCNT content (wt.%) | Nanoclay content (wt.%) | LOI (vol.% O2 ± 2σ) | Combustion rate (mm/min) | UL94 HB (mm/min) |
| | 1 | Neat epoxy resin | 000 | 0 | 20.6 ± 0.3 | 28.41 | Not rated (NR) | | 2 | EP1 | 0.01 | 1 | 22.8 ± 0.3 | 24.25 | 25.78 (HB) | | 3 | EP2 | 0.02 | 1 | 24.2 ± 0.5 | 23.01 | 22.35 (HB) | | 4 | EP3 | 0.03 | 1 | 24.6 ± 0.4 | 22.45 | 22.03 (HB) | | 5 | EP4 | 0.01 | 2 | 24.2 ± 0.3 | 22.34 | 20.01 (HB) | | 6 | EP5 | 0.02 | 2 | 25.0 ± 0.3 | 20.05 | 18.60 (HB) | | 7 | EP6 | 0.03 | 2 | 24.6 ± 0.5 | 19.03 | 18.85 (HB) | | 8 | EP7 | 0.01 | 3 | 24.2 ± 0.4 | 20.45 | 19.65 (HB) | | 9 | EP8 | 0.02 | 3 | 24.6 ± 0.6 | 21.43 | 18.68 (HB) | | 10 | EP9 | 0.03 | 3 | 24.6 ± 0.3 | 20.80 | 18.76 (HB) |
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