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Application of a kind of natural plant dye in printing and dyeing process

A technology for dyeing liquor and cotton fabrics, applied in the field of textile dyeing and finishing, can solve the problems of cotton fabrics such as dyeing rate, friction resistance, soaping resistance, and unsatisfactory color fastness to sunlight, etc., and achieve dyeing rate and color fastness Improve and meet the aesthetic needs, and achieve the effect of uniform color

Active Publication Date: 2021-07-30
ZHEJIANG JISHAN PRINTING&DYEING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this document utilizes pre-medium treatment, improved dye uptake and color fastness to a certain extent, but, generally speaking, the dye uptake, friction resistance, soaping resistance, daily life of the cotton fabric that adopts described dyeing method to obtain Color fastness to light is still not ideal

Method used

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  • Application of a kind of natural plant dye in printing and dyeing process
  • Application of a kind of natural plant dye in printing and dyeing process

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] The dyeing process of the present embodiment comprises the steps:

[0049] 1) Cationic modification pretreatment of cotton fabric: immerse the cotton fabric in a cationic modifier solution, the concentration of the cationic modifier is 8g / L, the modification temperature is 45°C, the modification time is 90min, and the liquor ratio is 1: 10. The pH value of the solution is 5; take it out after soaking, wash with water, and dry; the cationic modifier is a chitosan cationic modifier with a molecular weight of 5000 and a deacetylation degree of 80%;

[0050] 2) polyethylene glycol pretreatment: immerse the cotton fabric after the modified pretreatment in the polyethylene glycol aqueous solution, MgCl in the polyethylene glycol aqueous solution 2 Concentration is 1wt.%, polyethylene glycol concentration is 10wt.%, take the weight of aqueous solution of polyethylene glycol as a benchmark; described pretreatment temperature is 20 ℃, pretreatment time is 40min, bath ratio is 1:...

Embodiment 2

[0056] The dyeing process of the present embodiment comprises the steps:

[0057] 1) Cationic modification pretreatment of cotton fabric: immerse the cotton fabric in the cationic modifier solution, the concentration of the cationic modifier is 25g / L, the modification temperature is 85°C, the modification time is 30min, and the liquor ratio is 1: 50, the pH value of the solution is 10; take it out after soaking, wash with water, and dry; the cationic modifier is a chitosan cationic modifier with a molecular weight of 30,000 and a deacetylation degree of 95%;

[0058] 2) polyethylene glycol pretreatment: immerse the cotton fabric after the modified pretreatment in the polyethylene glycol aqueous solution, MgCl in the polyethylene glycol aqueous solution 2 Concentration is 4wt.%, polyethylene glycol concentration is 30wt.%, take the weight of aqueous solution of polyethylene glycol as a benchmark; described pretreatment temperature is 50 ℃, pretreatment time is 10min, bath ratio...

Embodiment 3

[0064] The dyeing process of the present embodiment comprises the steps:

[0065] 1) Cationic modification pretreatment of cotton fabric: immerse the cotton fabric in the cationic modifier solution, the concentration of the cationic modifier is 12g / L, the modification temperature is 55°C, the modification time is 75min, and the liquor ratio is 1: 25. The pH value of the solution is 6.5; take it out after soaking, wash with water, and dry; the cationic modifier is a chitosan cationic modifier with a molecular weight of 10,000 and a deacetylation degree of 85%;

[0066] 2) polyethylene glycol pretreatment: immerse the cotton fabric after the modified pretreatment in the polyethylene glycol aqueous solution, MgCl in the polyethylene glycol aqueous solution 2The concentration is 2wt.%, the concentration of polyethylene glycol is 15wt.%, based on the weight of polyethylene glycol aqueous solution; the pretreatment temperature is 30°C, the pretreatment time is 30min, the bath ratio ...

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Abstract

The invention belongs to the field of textile dyeing and finishing, and in particular relates to a method for dyeing cotton fabrics with a natural plant dye of gardenia blue pigment. The method includes the steps of cationic modification pretreatment of cotton fabrics, polyethylene glycol Pretreatment, dyeing, post-mordant treatment, and post-treatment. The dyeing process of the present invention combines a specific cotton fabric pretreatment method with a post-mordant dyeing process using a specific mordant, thereby realizing an unexpected increase in the dyeing rate and color fastness of the gardenia blue pigment on cotton fabrics .

Description

technical field [0001] The invention belongs to the field of textile dyeing and finishing, and in particular relates to a method for dyeing cotton fabrics with gardenia blue pigment natural plant dyes. Background technique [0002] With the improvement of people's living standards, more and more people begin to advocate natural and healthy lifestyles, and people's awareness of their own health and health care is becoming more and more intense. However, some synthetic dyes are harmful to human health and the ecological environment. The resulting hazards are becoming more and more noticeable. Existing research results have shown that there are 23 kinds of carcinogenic aromatic amines and more than 100 synthetic dyes that may produce carcinogens, and more than 20 synthetic dyes are allergic to the skin. And other chemical regulations, such as EU 67 / 648 / EC directive, EU 2001 / C96E / 18 directive, EU 2002 / 61 / EC directive, EU 2003 / 3 / EC directive, ECO--Label new standard, chemical REA...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D06P3/60D06P1/00D06P1/34D06P1/44D06P1/46D06P1/613D06P5/10
CPCD06P1/0032D06P1/34D06P1/445D06P1/46D06P1/6138D06P3/60D06P5/10
Inventor 陶建平
Owner ZHEJIANG JISHAN PRINTING&DYEING