【摘要】 以生物质酒石酸与六氯环三磷腈为原料,合成了一种含有多金属螯合位点的环保型P/N型协效阻燃剂（HCTA）。采用傅里叶变换红外光谱（FTIR）对HCTA结构进行了表征。然后将HCTA与聚丙烯腈（PAN）纺丝液共混,以含Cu²⁺溶液为凝固浴,经湿法纺丝工艺制备阻燃PAN复合纤维（PAN/HCTA@Cu）。利用扫描电子显微镜（SEM）和能量色散光谱（EDS）对PAN/HCTA@Cu纤维截面进行研究,并通过极限氧指数（LOI）与燃烧测试表征了PAN/HCTA@Cu的阻燃性能。结果表明,阻燃剂HCTA和Cu²⁺在PAN基体中分散均匀,拥有良好的相容性。PAN/HCTA@Cu极限氧指数高达31.7%,在离火后迅速自熄,阻燃性能优异,为开发环境友好型阻燃PAN复合纤维提供了一种新思路。更多还原

【Abstract】 Biomass tartaric acid and hexachlorocyclotriphosphonitrile were taken as raw materials,an ecofriendly P/N synergistic flame retardant（HCTA） containing multi-metal chelating sites was synthesized.The structure of HCTA was characterized by using Fourier transform infrared spectroscopy（FTIR）.Then HCTA was blended with polyacrylonitrile（PAN） spinning solution to prepare flame retardant PAN composite fibers（PAN/HCTA@Cu） by wet spinning process and using Cu²⁺-containing solution as the coagulation bath.Scanning electron microscopy（SEM） and energy dispersive spectroscopy（EDS） were used to investigate the cross-section of PAN/HCTA@Cu fibers,and the flame retardancy of PAN/HCTA@Cu was characterized by the limiting oxygen index（LOI）and combustion tests.The results showed that flame retardant HCTA and Cu²⁺ were uniformly dispersed in the PAN matrix with good compatibility,and the PAN/HCTA@Cu had a high limiting oxygen index（LOI） of 31.7%,which was self-extinguishing and had excellent flame retardant properties after being removed from the fire.This paper provided a new idea for the development of eco-friendly flame retardant PAN composite fibers.更多还原