The Application Analysis of Dye-Fixing Agent In The Process of Fabric Dyeing Process
Lead: Some dyes can dye bright-colored fabrics and the direct dye, acid dye and other anionic water-soluble dye have wild chromatogram. But the water-soluble groups on the dyes makes the bad wet fastness. Fading and staining will be appeared broadly, which will cause old appearance of the fabric, and the dropped dye will stain on other fiber, and causes staining on other fiber. The reactive dye. Although, the covalent bond formed by reactive dye and fiber is quite strong, but in fact, the non-reacted reactants and hydrolysate of dye could not completely washed from the dyed fabric, this part of dye will fade. Moreover, fabric’s covalent bond will be hydrolyzed and broken. In order to improve the fastness of the fabric, we need to fix the color. The auxiliaries that can improve the fastness is called color- fixing agent . Dye-fixing agent ‘s working principle. Dyeing different fibers, the dyeing principle and fastness is different. So the dye-fixing principle and app...