Processing method used for dyeing wool fabric with natural dye with high colour fastness

A technology of natural dyes and high color fastness, which is applied in dyeing, animal fiber, textiles and papermaking, etc. It can solve the problems of unsuitable textiles, difficult to obtain colors, and low utilization rate of dyes, so as to improve washing fastness and Effects of light fastness, saving energy consumption and cost, improving stability and reproducibility

Active Publication Date: 2016-06-01
HENGYUANXIANG GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] When natural dyes are used for textile dyeing, there are certain limitations. Except for a few structural types, most natural dyes are unstable to light due to the inherent instability of their chromophores, and their light fastness is poor. Taking Textile Requirements
In addition, the molecular structure of natural dyes is generally small, and does not c

Method used

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  • Processing method used for dyeing wool fabric with natural dye with high colour fastness

Examples

Experimental program
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Effect test

Embodiment 1

[0028] Wool fabrics were soaked in a treatment solution containing 1g / L wetting agent fatty alcohol polyoxyethylene ether AEO9 for 20 minutes, taken out, squeezed dry; put in a pH value of 3.6, containing 5% (owf) sorghum red pigment and 5% (owf) In the dyeing bath of Galla gall extract, the temperature was raised to 90° C. at 2° C. / min, and the dyeing was carried out at a constant temperature for 60 minutes. After taking it out, it was washed with water. Then adopt metal ion mordant to carry out mordant treatment according to the following process: Ferrous sulfate dosage 4% (owf), pH value 4.0, mordant temperature 60 ℃, mordant time 60 minutes. The mordanted fabric is steamed with saturated steam for 20 minutes at 100°C. Wash the fabric with hot water at 50°C for 20 minutes, wash in cold water after dyeing, dehydrate and dry.

[0029] The gallnut extract is extracted by ultrasonic-assisted extraction, and the extraction process is as follows: commercially available gallnut i...

Embodiment 2

[0035] Wool fabrics were soaked in a treatment solution containing 1g / L wetting agent fatty alcohol polyoxyethylene ether AEO9 for 20 minutes, taken out, and squeezed dry; put in a pH value of 3.6, containing 4% (owf) lac pigment and 4% (owf) In the dyeing bath of Galla gall extract, the temperature was raised to 95° C. at 2° C. / min, dyed at a constant temperature for 60 minutes, taken out, and washed with water. Then adopt metal ion mordant to carry out mordant treatment according to the following process: ferrous sulfate dosage 5% (owf), pH value 4.0, mordant temperature 60 ℃, mordant time 60 minutes. The mordanted fabric was steamed with saturated steam for 20 minutes at 100°C. Wash the fabric with hot water at 50°C for 20 minutes, wash in cold water after dyeing, dehydrate and dry. Galla gall extracting method is the same as embodiment 1.

Embodiment 3

[0041]Wool fabrics were soaked in a treatment solution containing 2g / L wetting agent JFC for 30 minutes, taken out, squeezed dry; put into pH 4.0, containing 5% (owf) lac pigment and 8% (owf) gallnut extract In the dyeing bath, raise the temperature to 95°C at 3°C / min, dye at a constant temperature for 70 minutes, take it out and wash it with water. Then adopt metal ion mordant to carry out mordant treatment according to the following process: ferrous sulfate dosage 7% (owf), pH value 4.0, mordant temperature 50 ℃, mordant time 70 minutes. The mordanted fabric was steamed with saturated steam for 30 minutes at 100°C. Wash the fabric with hot water at 60°C for 30 minutes, wash in cold water after dyeing, dehydrate and dry.

[0042] The extraction method of gallnut is as follows: dry and crush commercially available gallnut, take 15 grams of gallnut powder, add 400 ml of water, extract at a temperature of 60-70°C and an ultrasonic power of 400 watts, filter with suction, and di...

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Abstract

The invention discloses a processing method used for dyeing wool fabric with a natural dye with high colour fastness. The processing method comprises following steps: wool fabric is immersed in a treating fluid containing 0.5 to 10g/L of a wetting agent for 10 to 30min, and then is taken out from the treating fluid and dried via squeezing; the treated wool fabric is subjected to dye bath in a solution containing the natural dye and 1 to 10% (owf) of a gallnut extract, temperature is increased to 75 to 98 DEG C at a speed of 1 to 5 DEG C/min, constant temperature dyeing is carried out for 30 to 90min, and then an obtained product is taken out from dye bath and washed with water, wherein pH value of the solution ranges from 3.0 to 4.5; mordanting is carried out with a metal ion mordant, wherein mordant using amount is controlled to be 2 to 8% (owf), pH value is controlled to be 3.0 to 5.0, mordanting temperature is controlled to be 50 to 70 DEG C, and mordanting time is controlled to be 40 to 80min; high temperature steam treatment with saturated steam is carried out for 10 to 30min; fabric obtained via steaming is washed with hot water for 10 to 30min, is washed with cold water, and is subjected to dehydration and dying. The washing fastness and light fastness of the wool fabric obtained via the processing method are both relatively high.

Description

technical field [0001] The invention belongs to the technical field of textile dyeing and finishing, and in particular relates to a processing method for dyeing wool fabric with high color fastness natural dyes. Background technique [0002] The way for textiles to obtain color or pattern is to use dyes to dye or print textiles. Since the discovery of synthetic dyes in the middle of the 19th century, they have been characterized by low price, simple use, stable quality, bright color, and can solve the color fastness of various fibers. and other issues have been greatly developed. However, studies have found that some synthetic dyes are toxic, carcinogenic, and polluting, and most countries have promulgated regulations prohibiting the use of harmful synthetic dyes. At the same time, as people's awareness of environmental protection and health becomes stronger and stronger, people's interest in natural dyes is revived around the world, and many researchers have begun to devel...

Claims

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Application Information

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IPC IPC(8): D06P3/14D06P1/34D06P1/651D06M11/56D06M11/57D06M101/12
Inventor 刘瑞旗陈忠伟何爱芳邱洪生奚锡王慧
Owner HENGYUANXIANG GRP
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