Method of dyeing and finishing cationic polyester fabrics

A cationic polyester and cationic dye technology, applied in dyeing method, textile material processing, continuous processing of textile materials, etc., can solve the problems of easy fading and color defects of cationic polyester fabrics, improve color fastness and save time , cost saving effect

Active Publication Date: 2020-07-28
新天地纺织印染(嘉兴)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The above-mentioned prior art scheme has the following defects: firstly carry out one-bath dyeing at a lower temperature, and combine the cationic dyes in the cationic dyeable polyester fiber (CDP), at this time, the cationic dyes account for most of the dyeing on the fiber. position, leading to t

Method used

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  • Method of dyeing and finishing cationic polyester fabrics
  • Method of dyeing and finishing cationic polyester fabrics

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0086] Embodiment one: a kind of cationic polyester fabric dyeing and finishing method, concrete operation is as follows:

[0087] Step 1: Desizing, use the OS open-width desizing machine to desizing the cationic polyester fabric: first, the cationic polyester fabric is desizing with a 30% sodium hydroxide solution and the solution temperature is 60°C, and then washed in warm water Desizing solution, and finally dry the cationic polyester fabric;

[0088]Step 2: Alkali reduction, use a loose alkali measuring machine to carry out alkali reduction operation on cationic polyester fabrics: first, the cationic polyester fabrics are desized with a 5% sodium hydroxide solution and the solution temperature is 90°C, and then put into warm water Clean the desizing solution, and finally dry the cationic polyester fabric;

[0089] Step 3: Dye preparation: (printing and dyeing colors can be formulated according to the combination of disperse dyes and cationic dyes: cationic red SD-GRL and...

Embodiment 2

[0099] The difference between embodiment two and embodiment one is:

[0100] Step 3: Dye preparation: dye components include disperse blue 2BLN1.0% owf, cationic yellow SD-5GL1.0% owf, glacial acetic acid 1g / L, polyester superfine fiber high temperature leveling agent TF-212K 1.2g / L, Ammonium sulfate 0.5g / L;

[0101] Step 3.1: Add glacial acetic acid 1g / L to the chemical material, disperse dye 1.0% owf and cationic yellow SD-5GL 1.0% owf, stir to form a slurry, add polyester superfine fiber high temperature leveling agent TF-212K 1.2g / L , ammonium sulfate 0.5g / L, and adjust the pH to 5, according to the bath ratio of 1:40;

[0102] Step 3.2: beat the material, the temperature rises to 80°C, stir and beat the material;

Embodiment 3

[0104] The difference between embodiment three and embodiment one is:

[0105] Step 3: Dye preparation: dye components include disperse blue 2BLN3.0% owf, cationic yellow SD-5GL3.0% owf, glacial acetic acid 1g / L, polyester superfine fiber high temperature leveling agent TF-212K 1.2g / L, Ammonium sulfate 0.5g / L;

[0106] Step 3.1: Add glacial acetic acid 1g / L to chemical materials, disperse dye 3.0% owf and cationic yellow SD-5GL 3.0% owf, stir to form a slurry, add leveling agent 1.2g / L, ammonium sulfate 0.5g / L, And adjust the pH to 5, according to the bath ratio of 1:40;

[0107] Step 3.2: beat the material, the temperature rises to 80°C, stir and beat the material;

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Abstract

The invention discloses a method of dyeing and finishing cationic polyester fabrics. The method comprises the steps of carrying out the following operations on the cationic polyester fabrics in sequence: desizing; alkali reduction; dye preparation; high temperature and high pressure one-bath two-step dyeing, wherein pre-dipping dyeing operation of the cationic polyester fabrics is that the cationic polyester fabrics start to be dyed at 60-65 DEG C, and the temperature rises to 80 DEG C and is kept for 5-8 min; cationic dyes color the cationic polyester fabrics, and the temperature rises to 110DEG C and is kept for 9-12 min; the dispersal coloring of the cationic polyester fabrics is operated, and the temperature rises to 130 DEG C and is kept for 45-55 min; and the color stabilization ofthe cationic polyester fabrics is operated, and the temperature rises to 80 DEG C and is kept for 40-60 min; soaping; reduction clearing; and sizing. According to the method, dyed and finished cationic polyester fabrics have good color fastness, and the problem of poor color fastness of cationic polyester fabrics dyed and finished with the prior art is solved.

Description

technical field [0001] The invention relates to the field of textile dyeing and finishing, in particular to a method for dyeing and finishing cationic polyester fabrics. Background technique [0002] Polyester fiber (PET) is a hydrophobic fiber made from polyethylene terephthalate. Due to the tight molecular structure of polyester, but lack of hydrophilic groups such as carboxyl and sulfonic acid groups, it cannot be dyed with direct dyes, acid dyes, basic dyes, etc. It must be dyed with disperse dyes under the conditions of high temperature and high pressure, hot melt or the presence of carriers. . [0003] Cationic modified polyester generally improves the dyeability of polyester fiber by adding the third and fourth monomers and adopting the copolymerization method. After adding the fourth monomer, the cationic dye of polyether can dye cationic atmospheric pressure dyeing fiber (ECDP) under normal pressure. Due to the change of fiber structure, the strength will decrease...

Claims

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Application Information

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IPC IPC(8): D06P3/52D06P3/54D06P1/673D06P1/653D06P1/651D06P1/62D06P1/44D06P1/16D06P1/00D06P5/02D06P5/04D06P5/10D06L1/16D06L1/14D06B21/00D06B15/00D06B3/10
CPCD06P3/52D06P3/54D06P1/16D06P1/445D06P1/67366D06P1/625D06P1/6533D06P1/67333D06P1/67358D06P1/65118D06P5/02D06P5/04D06P5/10D06P1/0032D06L1/16D06L1/14D06B3/10D06B21/00D06B15/00
Inventor 向华彬潘卫峰谢小云钱培荣
Owner 新天地纺织印染(嘉兴)有限公司
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