防染盐S在活性染料印花工艺上的应用新探

The new application of reserve salt S in reactive dye printing

活性染料在棉织物直接印花后蒸化时,由于蒸化机会产生一些还原物质,其还原性会使某些活性染料的色光变得萎暗,防染盐S作为一个弱氧化剂常常在印染工艺中被用来中和这些还原物质,以使活性染料得到鲜艳、正确的色光。但防染盐S会使一些对氧化剂敏感的活性染料变色,所以只有摒弃传统使用防染盐S的观点,正确使用防染盐S才能使活性染料在棉织物印花上获得应有的色光且达到环保的目的。

Reactive dyes present darker chromaticity when it is printed directly on cotton fabric after steaming for the reduction substance produced by steamer. Reserve salts S, as a weak oxidant in dyeing and printing process, is always used to neutralize the reduction substances to impart reactive dyes right and bright color. However, reserve salt S may change the color of some oxidant sensitive reactive dyes. Only by abandoning the traditional view of reserve salt S usage and using the reserve salt S correctly can make the reactive dyes dyed cotton fabric be with right color and achieve the goal of environmental protection.