Dyeing method using natural pigment for cationic-modified linen fabric

A linen fabric and natural pigment technology, applied in dyeing, textiles and papermaking, can solve the problems of low coloring rate and low color fastness

Inactive Publication Date: 2019-05-31
NORTHEAST FORESTRY UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention aims to solve the problems of low coloring rate and low color fastness when existing natural pigments are applied to the dyeing of linen fabrics, and provides a dyeing method based on cationic modified natural pigments of linen fabrics

Method used

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  • Dyeing method using natural pigment for cationic-modified linen fabric
  • Dyeing method using natural pigment for cationic-modified linen fabric
  • Dyeing method using natural pigment for cationic-modified linen fabric

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specific Embodiment approach 1

[0017] Specific embodiment 1: The dyeing method of natural pigment based on cationic modified linen fabric of this embodiment is carried out according to the following steps:

[0018] 1. Using the acetic acid-sodium acetate buffer solution with pH 4.5-5.5 as the solvent, configure the cellulase solution with a concentration of 10-20g / L; dip the linen fabric into the cellulase solution, the bath ratio is 1: (15-16), heat up to 45~55℃ for 3~5h, take out the linen fabric, wash with water until it is neutral, dry, and complete the pretreatment;

[0019] 2. According to the cationic modifier concentration of 20g / L~40g / L and the sodium hydroxide concentration of 10g / L~15g / L, add the cationic modifier and sodium hydroxide to the water and mix well to obtain the modification. Solution of the modifier; the cationic modifier is (3-chloro-2-hydroxypropyl) trimethylammonium chloride (CHPTMAC); the pretreated linen fabric is immersed in the modifier solution, the bath ratio is 1 : (30~50), hea...

specific Embodiment approach 2

[0022] Specific embodiment two: this embodiment is different from specific embodiment one in that the dye accelerant in step three is sodium chloride; the other is the same as that in specific embodiment one.

specific Embodiment approach 3

[0023] Specific embodiment three: This embodiment is different from specific embodiment one or two in that the natural pigment dye described in step four is oak bowl tannin or bayberry tannin; others are the same as specific embodiment one or two.

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Abstract

The invention relates to a dyeing method for linen fabric, in particular to a dyeing method using natural pigment for cationic-modified linen fabric. The method aims at solving the problems of low coloring rate and low color fastness occurring when existing natural pigment is applied to linen fabric dyeing. The method includes the steps that firstly, the linen fabric is immersed into a cellulase solution for pretreatment with the cellulase solution; secondly, the linen fabric is subjected to retreatment with a cationic modifier solution; thirdly, a dye solution is prepared from natural pigmentdye; fourthly, the linen fabric obtained after retreatment is immersed into the dye solution for dyeing, and then dyeing of the linen fabric is completed. By means of the method, the dye uptake reaches 25%-50%, and the color fastness reaches 4-5 grade. The method is suitable for the field of printing and dyeing.

Description

Technical field [0001] The invention relates to a method for dyeing flax fabrics. Background technique [0002] As a natural and renewable resource, flax fiber is an extremely important raw material in the entire light industry production. Linen fabric has good water absorption, anti-static properties, thermal conductivity and air permeability, and is widely used in various textile products. The main composition of flax fiber is cellulose, and contains more impurities such as lignin and hemicellulose. Due to its special structure, the original flax fiber fabric has the shortcomings of rough hand feeling, poor dyeing performance, and easy decolorization after washing. . Therefore, improving the comfort of taking flax fiber, improving the dyeing performance of flax fabric and improving its fastness after dyeing is one of the urgent problems in the flax textile industry. [0003] In recent years, with the continuous improvement of the public's green health concept, people have foun...

Claims

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Application Information

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IPC IPC(8): D06P1/34D06P1/673D06P1/44D06P1/46D06P1/66D06P3/60
Inventor 王立娟崔畅
Owner NORTHEAST FORESTRY UNIVERSITY
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