纯棉纱布一浴一步法煮漂工艺探究

采用活化剂等助剂对纯棉纱布进行一浴煮漂前处理,研究了双氧水、精练剂A、氢氧化钠等用量以及活化剂种类、用量和温度对纱布前处理效果的影响,以处理后织物的白度、润湿性以及表面活性物质为评价指标,得出最佳前处理工艺为:27.5%双氧水1.2 g/L,精练剂A 2.3 g/L,32.5%NaOH 2.65 g/L,四乙酰乙二胺(TAED)为漂白活化剂,用量为2 g/L,温度为95℃。采用优化工艺处理后,纯棉纱布的白度为78.8%,沉降时间为1.63 s,表面活性物质测试泡沫高度不超过2 mm,符合前处理要求,达到了节能减排、降低成本的目的。

One-bath one-step scouring and bleaching process of cotton gauze

The cotton gauze was pretreated with activating agent and other additives in one bath.The effects of concentration of hydrogen peroxide,scouring agent A and sodium hydroxide,type and concentration of activator and temperature on the pretreatment effect of cotton gauze were studied.The pretreatment effect was tested taking whiteness,wettability and surface active substances of fabrics as indexes.The optimum process was as follows:27.5%hydrogen peroxide concentration 1.2 g/L,scouring agent A concentration 2.3 g/L,32.5%NaOH concentration 2.65 g/L,tetraacetylethylenediamine(TAED)used as bleach activator and concentration 2 g/L,temperature 95℃.Finally,the whiteness of the cotton gauze after the optimization pretreatment process was 78.8%,the settling time was 1.63 s,and the foam height in the surface active substance test was not more than 2 mm,which met the demand of pretreatment and achieved the goal of energy saving,emission reduction and cost reduction.