为了提高织物的阻燃性能,采用磷-氮阻燃水性聚氨酯（PU）整理涤丝纺织物,用TG、DSC和氧指数仪等研究整理后织物的热稳定性和阻燃性能,并利用扫描电镜和能谱仪对织物燃烧后的炭层进行分析.实验结果表明：与未阻燃整理织物相比,织物用PU整理后降低了起始分解温度,提高了高温下的热稳定性,分解温度范围变宽.阻燃整理织物的极限氧指数（LOI）值提高了5.1%,垂直燃烧性能达到GB/T5455-1997B1级.织物燃烧后布面干净,表面形成致密、光滑、无孔洞的炭层,炭层中磷含量超过阻燃整理织物中原始含量,磷富集于炭层表面.
To improve flame retardant fabric,POLY TAFFETA fabric was treated by flame retardant waterborne polyurethane（PU）with phosphorus-nitrogen synergy effects.The performance of thermal stability and flame retardant of the treated fabric was investigated by TG,DSC and LOI,and the residue carbon layer was characterized by scanning electron microscopy（SEM）and energy dispersive spectrometer（EDS）.The results show that,compared with the base fabric,the flame-resistant fabric reduces starting decomposition temperature and improves the thermal stability under high temperature and decomposition temperature range broadens.The LOI value is increased 5.1%and the vertical combustibility could achieve GB/T5455-1997 B1 level.The fabric surface is clean after the combustion and forms integrate and smooth carbon layer without holes.The content of P in residue carbon is more than that in flame-resistant fabric,which has strong retardant ability of flame.
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