To Improve the Fastness to Wet Rubbing of the Deeper Color Fabric Dyed with Reactive Dye
The Improving of the fastness to wet rubbing of the deeper color fabric dyed with reactive dye is one of the methods to enhance the fabric's quality and overcome the export barrier. The reasons that cause the bad fastness to wet rubbing is the transfer of water-soluble dye and mechanical friction transfer of colored fiber particle(10-40μm). The test fabric's fastness to wet rubbing process is: rubbing the fabric with the white cloth in stipulated conditions, compare the stain on the white cloth with the Greyscale for staining, that is the transfer from the dye molecule and colored fiber particle to white cloth. Under same fabric, same dye, same preliminary treatment and dyeing process, the deeper the color is, the worse the fastness to wet rubbing is. The water-soluble groups in the reactive dye are good for the dye dissolution and up-taking, but it is the main reasons for bad wet fastness. Because of the water on the white cloth, it is impossible for the reactive dye to d...