Research Article
Phosphorus Flame Retardants for Polymeric Materials from Gallic Acid and Other Naturally Occurring Multihydroxybenzoic Acids
Table 4
Flammability characteristics of blends of phosphorous esters of gallic acid anilide with DGEBA epoxy resin.
| | Additive | Additive level (%) | Phosphorous level (%) | Peak heat release rate (W/g) | Limiting oxygen index (%) | UL 94 rating |
| | DGEBA epoxy | 0 | 0 | 692 | 19.0 | NR | | GA-DEP-E | 7.5 | 1 | 491 | 22.5 | NR | | GA-DEP-E | 14.0 | 2 | 411 | 23.0 | NR | | GA-DOPO-E | 9.6 | 1 | 617 | 23.8 | V2 | | GA-DOPO-E | 19.1 | 2 | 541 | 27.0 | V0 |
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