Abstract: The Flame-retardant and Anti-dripping properties of Aramid 1313∕Flame retardant polyester blended yarn was studied with five ratio .Through the LOI test the difficulty level of the blended yarn was studied.Flame-retardant and Anti-dripping properties of the blended yarn was evaluated by the data (damaged length ,renewal burning times and melting drops number)of vertical flame test.Meanwhile,by field emission scanning electron microscope(FE-SEM),microscopic observation of the molten drop was acquired.The result shows that,to blend with Aramid 1313 the Flame-retardant property of blended yarn increases and Anti-dripping property achieves ideal requirements.

Key words: aramid 1313, flame-retardant polyester, blended yarn, melt-dripping