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Reasons for poor rubbing fastness:After the fabric is dyed, although the dye is combined with the fiber, there is a large dye concentration gradient between the dyed cloth to be tested and the white cloth to be tested. In the absence of external force, the molecules will spontaneously transfer from Read More
There are many kinds of color fastness, such as washing fastness, rubbing fastness, perspiration fastness, chlorine fastness, light fastness, sublimation fastness, etc. This article mainly discusses sublimation fastness.Sublimation fastness: refers to the migration and vaporization of dye molecules Read More
Why is the wet fastness and rubbing fastness poor when the reactive dyes dye the dark color of cotton? How to deal with it?(1) Reasons for poor fastness. Unlike direct dyes dyeing cotton, neutral (or acid) dyes dyeing nylon, disperse dyes dyeing polyester, reactive dyes dyeing cotton are not combine Read More
1. Choose reactive dyes with less floating color after dyeingFloating color is the main reason for the unqualified wet rubbing fastness of dark and dense fabric.The floating dyes of reactive dyes include dyes that have been adsorbed on the fibers without reacting with the fibers, partially hydrolyze Read More
