Graphite-like carbon nitride hybridization of aluminum 2-carboxylethyl phenylphosphonate
Graphite-like carbon nitride hybridization of aluminum 2-carboxylethyl phenylphosphonate(CNALCEPPA) ,at present the organic phosphonic acid salt flame retardants mainly phosphonic acid diethyl time aluminum. Since 2017, we have prepared 2- carboxylethyl phenylphosphonic acid (ALCEPPA) and 2- carboxylethyl phenylphosphonic acid (CNALCEPPA) from 2- carboxylethyl phenylphosphonic acid (ALCEPPA). It was used as flame retardant of nylon 6 and was approved by the market. The evaluation results showed that the initial decomposition temperature of CNALCEPPA (1%wt thermogravimetric temperature) reached 380℃, with better thermal stability than aluminum diethylphosphonate.
Model | PA6 | PA6/ALCEPPA | PA6/CNALCEPPA30 |
Addition(wt%) | 0 | 20 | 15 |
Vertical combustion | NR | UL94-V1 | UL94-V0 |
Limiting oxygen index | 22.6 | 32.1 | 38.5 |