The Light Color-Change Impact Of Reactive Dyes And Finishing Agent On The Cotton And Nylon/Cotton Fabrics

This paper first studies the light color-change of bifunctional reactive dyes on cotton and nylon/cotton fabrics,then explores the corresponding finishing process of the finishing agent,and finally compares the light color-change impact of the finishing agent.Our study shows that 1) While the K/S value of cotton and nylon/cotton fabrics with the same dye concentration decreases much when the sunshine time ranges from 0.5 to 1.0 hours,the decrease becomes smaller when the sunshine time becomes longer;2) There is a linear relationship between the sunshine time and the K/S value when the sunshine time ranges from 1 to 20 hours;3) Different finishing agent on cotton and nylon/cotton fabrics could influence on the degree of light color-change,which is related with the finishing agent type.4) Compared with the light color-change without the finishing agent,the UV blocking finishing agent will not accelerate the light color-change of cotton and nylon/cotton fabrics.In contrast,the "Water-oil-stain proofing" agent will accelerate the light color-change of cotton and nylon/cotton fabrics,while the light color-change impact of 503A and the general deepening agent is related with both dyes and fibers.