氮-磷-铝阻燃剂的制备及其在皮革中的阻燃性能

nitrogen-phosphorus-aluminum synergistic flame retardant was prepared using molecular design, introduced as a filler between the leather collagen fibers by a designed flame-retardant modification process, resulting in flame retardant functional leather with excellent flame-retardant properties, and the structure was characterized by FTIR, 1H NMR, SEM, XPS, TG, and DTG. FTIR and 1H NMR showed that the target structure had been introduced; SEM, EDS, and XPS showed that the flame retardant filler had been introduced between the leather collagen fiber bundles; TG and DTG showed that the higher the addition of flame retardant filler, the higher the thermal decomposition temperature of leather, and the higher the residual rate; flame retardant testing results showed that after introducing the nitrogen-phosphorus-aluminum flame retardant, leather had good flame retardant properties, did not burn, and easily extinguished after leaving the flame, without continuous combustion. The burning distance was almost zero, with almost no mass loss. The flame-retardant rating could reach UL 94 V-0, and the limiting oxygen index could reach 35.4%.