High efficiency Flame Retardancy of Poly(phenylphosphoryl phenylenediamine) in biodegradable poly(lactic acid)
Poly(phenylphosphoryl phenylenediamine) (PPDA) was used to improve the fire safety of Poly(lactic acid).With the incorporation of 3 wt% PPDA, the limited oxygen index (LOI) value of flame retardant poly(lactic acid) (PLA) blend increased from 20.0% of neat PLA to 25.5%, and its UL-94 testing achieved V-0 rating.The peak heat release rate (PHRR) and total heat release (THR) values of PLA/3wt%PPDA material were decreased from 643.7 kW/m2 and 109.1 MJ/m2 of neat PLA to 570.0 kW/m2 and 98.3 MJ/m2, respectively, and the char residue yield of PLA/3wt%PPDA material was increased from 1.5% of neat PLA to 4.2%.The high efficient fire safety of PPDA in PLA is mainly attributed to that the combination of the decomposed phosphorous-containing radical inhibition of PPDA and inert gases in the gas phase and the barrier action of the formed char layer.The addition of less than 3 wt% of PPDA has little influence on the mechanical properties of PLA.The high-efficiency flame retardant PLA materials have very wide application prospect in electrical case, automobile interior, insulating foam materials, 3D printing materials.
Ningjing Wu Guoliang Fu Yue Yang Mingfeng Xia Han Yun Hao Zhang
Key Laboratory of Rubber-Plastics, Ministry of Education/Shandong Provincial Key Laboratory of Rubber-Plastics, Qingdao University of Science & Technology, Qingdao City 266042, Shandong, Peoples Republic of China
国际会议
杭州
英文
251-252
2018-06-14（万方平台首次上网日期，不代表论文的发表时间）