金属螯合型P-N协效阻燃剂的合成及其阻燃聚丙烯腈复合纤维研究  

Synthesis of Metal-chelating P/N Synergistic Flame Retardants and Their Flame Retardant Polyacrylonitrile Composite Fiber Research

作　　者：高丽筱 谭伟 左春龙 陈曦之 任元林[1,2] GAO Li-xiao;TAN Wei;ZUO Chun-long;CHEN Xi-zhi;REN Yuan-lin(School of Textile Science and Engineering,Tiangong University,Tianjin 300387;Key Laboratory of Advanced Textile Composites of Ministry of Education,Tiangong University,Tianjin 300387)

机构地区：[1]天津工业大学纺织科学与工程学院,天津300387 [2]天津工业大学先进纺织复合材料教育部重点实验室,天津300387

出　　处：《纺织科学与工程学报》2024年第3期80-84,90,共6页Journal of Textile Science & Engineering

基　　金：国家自然科学基金项目(21975182)。

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Cu^(2+)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Cu^(2+)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。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 Cu^(2+)-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 Cu^(2+)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.

关 键 词：聚丙烯腈 生物质 阻燃 共混 

分 类 号：TQ342.94[化学工程—化纤工业]