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Cationic modified cellulosic fiber dyeing method

A cellulose fiber and dyeing method technology, applied in the field of cationic modified cellulose fiber dyeing, can solve the problem of uneven coloring, and achieve the effects of improving the utilization rate, reducing the pollution and reducing the processing cost.

Pending Publication Date: 2020-09-22
YIBIN SPARK NEW FIBER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of this paper is to provide a cationic modified cellulose fiber dyeing method to solve the problem of uneven coloring caused by the existing cationic fiber dyeing process

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] A method for dyeing cationic modified cellulose fibers, comprising the following steps:

[0037] S1. The cationic modified cellulose fiber enters the dyeing vat for pretreatment. The pretreatment is: use soda ash 1g / l, bath ratio 1:10, and the temperature is 40°C for 30min, the purpose of which is to remove the oil on the cationic cellulose fiber agent and impurities, and then washed with water until the pH is between 6-7, and the cationic modified cellulose fiber is obtained by modifying the cellulose fiber by grafting a quaternary ammonium compound;

[0038] S2, adding the leveling agent into the auxiliary vat and mixing with water to evenly obtain the leveling liquid;

[0039] S3, adding the leveling liquor obtained in step S2 into the dye vat to absorb with cationic modified cellulose fibers;

[0040] S4. Add dye to the sub-tank reflux leveling liquid and stir evenly to obtain dye slurry;

[0041] S5, adding the dye slurry obtained in step S4 into a dye vat, dyein...

Embodiment 2

[0045] This embodiment is based on embodiment 1, and the difference with embodiment 1 is:

[0046] The leveling agent is carboxybetaine.

Embodiment 3

[0048] This embodiment is based on embodiment 1, and the difference with embodiment 1 is:

[0049] The leveling agent is polyhexamethylene guanidine phosphate.

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Abstract

The invention discloses a cationic modified cellulosic fiber dyeing method. Dye is uniformly added in a cationic modified cellulosic fiber dyeing process, and the dye is polymer with negative charge.In the dyeing process, the polymer with negative charge is added as a leveling agent, and a radial with negative charge is firstly adsorbed with cationic cellulosic fibers through ion bonds to occupya quaternary ammonium group with positive charge on the fibers; and then, the dye slowly exchanges with anion polymer to combine with the cationic quaternary ammonium group, so that the uniform dyeingpurpose is finally realized. The cationic modified cellulosic fiber dyeing method can shorten time or prolong time or slightly heat up to control color according to color depth requirements; and if color light is incorrect, the deficient dye can be directly added in the dyeing process for continuously dying, so that the problem that color blending in the prior art is difficult is solved.

Description

technical field [0001] The invention relates to the technical field of fiber dyeing, in particular to a cationic modified cellulose fiber dyeing method. Background technique [0002] Cellulose fiber includes natural cellulose fiber and regenerated cellulose fiber. Natural cellulose fiber includes cotton and hemp, and regenerated cellulose fiber includes modal, bamboo fiber, tencel, etc. Cellulose fiber has soft touch, good hygroscopicity, and dyeing Good performance and other characteristics are widely used, but the disadvantages of low dye utilization rate and poor color fastness in the dyeing process cause a large amount of sewage discharge, not only difficult and costly sewage treatment, but also cause huge pollution to the environment. The awareness of environmental protection has increased, so a large number of researchers have carried out cationic modification on cellulose fibers. The modified cationic cellulose fibers have high directness to dyes and good color fastne...

Claims

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Application Information

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IPC IPC(8): D06P1/52D06P5/22D06P3/60
CPCD06P1/52D06P1/5214D06P1/5257D06P1/5264D06P5/225D06P3/60
Inventor 刘玉桃张静陈茂洋陈占强黄金洪赵志远
Owner YIBIN SPARK NEW FIBER CO LTD
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