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Highly flame-retarding cotton fabrics with a novel phosphorus/nitrogen intumescent flame retardant
Peihua Zhao,Yaqing Liu,Xinhang Li,Mei Zhang,Shengnan Liu,Wenjun Liang 한국화학공학회 2014 Korean Journal of Chemical Engineering Vol.31 No.9
A novel phosphorus/nitrogen intumescent flame retardant, namely 6-chloro-4-(diethylamino phosphoratephosphoryl chloride)-2-(sodium 4-aminobenzensulfonate)-1,3,5-triazine (APPCABT), has been synthesized and charac-terized by elemental analysis, FT-IR,1H-NMR and31P{H}-NMR spectroscopies. To investigate the flame-retardingproperties of the treated cotton fabrics, APPCABT was applied to the chemical treatment of the cotton fabrics surface. The flame-retarding performance of the treated samples with APPCABT was evaluated by limiting oxygen index (LOI). The thermal degradation behavior of the treated samples was studied using thermogravimetric analysis (TGA). Thesurface morphology of the treated samples was observed by scanning electron microscopy (SEM). These results showthat APPCABT is both an intumescent flame retardant with high efficiency and an excellent char-forming agent forthe flame-retarding treatment of cotton fabrics.