Fire safety enhancement of a highly efficient flame retardant poly (phenylphosphoryl phenylenediamine) in biodegradable poly(lactic acid)
Fire safety enhancement of a highly efficient flame retardant poly (phenylphosphoryl phenylenediamine) in biodegradable poly(lactic acid)
复制标题
可生物降解聚乳酸中高效阻燃聚苯基磷酰苯二胺的防火安全增强
DOI：
10.1016/j.jhazmat.2018.08.090
复制
发表时间：
2019
影响因子：
13.6
通讯作者：
Wang Qingguo
中科院分区：
文献类型：
--
作者：
Wu Ningjing;Fu Guoliang;Yang Yue;Xia Mingfeng;Yun Han;Wang Qingguo
Flame-retarded poly(lactic acid) (PLA) biodegradable materials are viewed as promising as sustainable alternatives to petroleum-based commodity polymers. A new highly efficient flame retardant, poly(phenylphosphoryl phenylenediamine) (PPDA), was synthesized by the condensation of phenylphosphoryl dichloride withp-phenylenediamine and its structure was confirmed by1H nulear magnetic resonance and Fourier-transform infrared spectroscopy. When 3 wt% PPDA was incorporated into PLA, the limited oxygen index increased from 20.0% of neat PLA to 25.5% and its UL-94 vertical burning testing achieved V-0 rating. Moreover, the total heat release and peak heat release rate values of PLA/3 wt% PPDA material were decreased from 109.1 MJ/m2and 643.7 kW/m2of PLA to 98.3 MJ/m2and 570.0 kW/m2, respectively, and the fire performance index increased from 0.081 of PLA to 0.132 m2s/kW. The high fire safety of PPDA in PLA is mainly attributed to the combined effects of the phosphorous-containing radical inhibition and inert gases and the barrier action of the formed char layer. The addition of less than 3 wt% PPDA has little influence on the tensile and impact properties of PLA. The flame retardant PLA blends have great application potential in electrical casing, automobile interiors and three-dimensional printing materials.
