棉/毛混纺纱线的过碳酸钠漂白

Sodium percarbonate bleaching of cotton/wool blended yarn

探讨了过碳酸钠、活化剂四乙酰乙二胺(TAED)用量、漂白温度和时间对棉/毛混纺纱线白度、单纱强力、羊毛损伤的影响。确定了棉/毛混纺纱线过碳酸钠漂白的最佳工艺条件为:高效精练剂质量浓度4 g/L,过碳酸钠6 g/L,活化剂TAED 4 g/L,偏硅酸钠1 g/L,温度85℃,时间60 min。试验结果表明:过碳酸钠漂白纱线白度与传统双氧水漂白相当,但纱线强力和羊毛损伤远小于传统工艺。

The influences of concentration of sodium percarbonate and oxygen bleaching activator TAED,bleaching temperature and time on the whiteness,strength and damage of cotton/wool blended yarn were investigated.The optimum bleaching process of cotton/wool blended yarn with sodium percarbonate was scouring agent 4 g/L,sodium percarbonate 6 g/L,oxygen bleaching activator TAED 4 g/L,Na2SiO31 g/L,bleaching at 80 ℃ for 60 min.The whiteness of sodium percarbonate bleaching was same as that of traditional hydrogen peroxide bleaching,and the loss of strength and wool content of cotton/wool blended yarn was less than that of traditional hydrogen peroxide bleaching.