聚苯基膦酸二苯偶氮酯阻燃剂的合成与表征

Synthesis and Characterization of Polyazodiphenylene Phenylphosphonates

为了解决高分子材料的耐燃性问题，阻燃剂的研究越来越受到广泛重视．聚膦酸酯类化合物是一类重要的膦系阻燃剂［１～４］，与传统的非聚合型阻燃剂相比，这种阻燃剂具有阻燃效果好、低烟低毒、与聚合物基材相容性好、耐迁移、耐挥发、阻燃效果持久等优点，成为阻燃剂研究...

A new polyazophosphonate, polyazodiphenylene phenylphosphonate(PAPPP) was obtained by the interfacial polycondensation of phenylphosphonic dichloride with 4,4 dihydroxyazobenzene. The structure of the polymer was confirmed by FTIR, 1H NMR, 31 P NMR and elemental analysis. The thermal behavior was evaluated by DSC and TG, the high residue of PAPPP is due to the presence of nitrogen and phosphorus in the same mainchain. Nitrogen appears to have a somewhat synergistic flame retardant effect with phosphorus. PET samples containing 5% and 10%(mass ratio) PAPPP have limiting oxygen index values of 28.2 and 33.4. It may be concluded that nitrogen containing polyphosphonate possesses superior flame retardancy.