Abstract:

In order to obtain hollow segmented-pie ultrafine fiber nonwovens with excellent comprehensive properties, four different processing methods of softening treatment including physical washing, alkyl quaternary ammonium salt softener, organic silicon softener and chemical alkali softening were used to treat polyester/polyamide 6 nonwovens. Influences of different softening treatment processes on properties of the nonwovens were studied, and the cross-section morphologies were also observed and analyzed. The results show that hollow segmented-pie ultrafine fiber nonwovens treated with mechanical softening, alkyl quaternary ammonium salt softener softening, organic silicon softener softening are increased in crease recovery, bending resistance, draping property and softness. The breaking strength slightly decreases, and the tear strength is improved. The chemical alkali softening treatment effect is the best, but the fibers are damaged and mechanical properties are the poorest. Compared with the other three different treatment processes, the hollow segmented-pie ultrafine fiber nonwovens treated by organic silicone have the most excellent comprehensive performance.

Key words: polyester/polyamide 6 ultrafine fiber, soft treatment, hollow segmented-pie, nonwoven fabric