A kind of modified cellulose fiber dyeing process

Abstract

The invention relates to a modified cellulose fiber dyeing process which mainly includes the following steps: (1) carrying out tea saponin pretreatment boiling of modified cellulose fiber fabric samples in a certain process condition; (2) carrying out dyeing treatment; (3) examining the coloring rate, the condition of white bottom staining, the color style of the fabric and the shallow concentration of a residual liquid, and then carrying out an adjusting process test until the standard is reached; (4) repeatedly testing the small modified cellulose fiber samples to determine that the processhas no problem, and then carrying out large sample production; (5) then washing with water, soaping, dehydrating, drying, making color difference of the color sample OK, and discharging water from theinterior of a cylinder; and (6) post-finishing and setting, adding an ether type low-ammonia value organosilicon finishing agent, and then adding citric acid to adjust the pH value of the cloth surface to 5.0-7.0. When the small test samples are not reproduced, the dye-uptake of a dye is increased by using a salt-poor or alkali-poor way or by adjusting to reduce the dyeing bath pH. In post-finishing and setting, a hydrophilic organosilicon polyether softener and citric acid are added, and the fabric has small yellowing, is hydrophilic, has good smoothness, can achieve hand feeling finishing effect and has less peculiar smell.

Description

technical field [0001] The invention belongs to a fiber dyeing process, in particular to a modified cellulose fiber dyeing process. Background technique [0002] The dye uptake rate of traditional cellulose fiber dyeing process is generally around 40-70%. The dye uptake rate is low and there are many floating colors. In order to achieve the purpose of color fixation, the hydroxyl groups on the cellulose need to be ionized under strong alkaline conditions, so a large amount of soda ash must be added to the dyeing solution in the later stage of dyeing. The treatment of inorganic salt and alkali has always been a difficult problem for the industry. The large amount of inorganic salt that cannot be recycled and is difficult to degrade is discharged into rivers and lakes, seriously polluting water quality. Due to the high permeability of salt, the surrounding soil is salinized and alkaline. It has become a very difficult problem in environmental protection; in addition, the util...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a modified cellulose fiber dyeing process, which solves the problem that due to many uncertain factors such as the proportion of the modified fiber part and the stability of the batch; there are many reasons for the color change and the content of the modified component , batch changes, and weaving yarn batches may cause problems such as color changes

Images