writer：Xueying Shan*, Kuanyu Jiang,Yan Song, Jinchun Li*
keywords：flame retardant
source：期刊
specific source：Polymer Composites
Issue time：2018年
NiAl layed double hydroxide doped Zn with dodecylbenzenesulfonate anions (NiZnAl) was prepared by one-step coprecipitation method. Hexaphenoxycyclotriphosphazene (HPCP) is a cyclophosphazene derivative. NiZnAl first combined with HPCP were used to prepare polylactic acid (PLA) composites. Effect of NiZnAl and HPCP on flame retardancy of PLA was investigated. NiZnAl exhibited nano-dispersion in PLA composites, and its layers were intercalated by PLA chains. Limiting oxygen index (LOI) value of all the PLA composites with incorporation of HPCP and NiZnAl increased, and UL-94 tests passed V0 ratings. With the presence of NiZnAl in PLA/HPCP composites, the amount of graphite crystalline carbon after burning was increased. High peak of heat release rate (PHRR), heat release capacity (HRC) and the total heat release (THR) had a big reduction. The amount of char residue was increased apparently. The thermal degradation process was delayed. The summary results suggested that NiZnAl and HPCP had a good synergistic flame retardant effect in PLA.