|
After the polyester dye has been dyed by the disperse dye, usually some dye does not enter the crystallization zone of the polyester fiber, and the residual color on the surface of the fabric causes floating phenomenon. Therefore, it is necessary to carry out reduction washing to reduce the dye on the surface of the fabric. Some will need to carry out the second reduction washing due to the type of dye, the concentration of the formula or the unsuitable reduction washing conditions, etc., the color fastness can reach the standard, but the program is time-consuming and complicated, and the additive is too much to cause color change. Wait. In this study, the bath ratio of alkaline reduction washing was changed without changing the dyeing formula, and the bath ratio was 1:10, 1:10, twice, 1:20 and 1:30, and the color fastness was poor. The deep blue, black and purple color formula is used for the experiment, and then the spectrophotometer color measurement, fabric level dyeing test, K/S value analysis, water wash color fastness and PH value are discussed. Finally, each is integrated. The bath is compared to the energy required for the process. The results show that the black and deep blue color are better in terms of color, light fastness and energy consumption when the bath ratio is 1:20. It is recommended to use this bath to reduce the washing than the process; It is recommended to use a bath ratio of 1:30 for reduction washing to achieve better color fastness.
|