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Method for dyeing cotton fabrics through color matching of natural vegetable dyes

A technology of natural vegetable dyes and vegetable dyes, applied in dyeing methods, textiles and papermaking, etc., can solve the problems of cold color tone and incomplete color spectrum, and achieve the effect of uniform and soft color, high color fastness and not easy to fade.

Inactive Publication Date: 2014-02-26
李振新
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

A single plant dye has the problems of incomplete color spectrum and cold color tone, which can be solved by using different dyes for color matching

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] a. Grind Coptidis Rhizoma Coptidis, add water to the plant material according to the ratio of material to liquid 1:10, extract at 10°C for 0.5h, filter the extract, concentrate the filtrate, and dry it to obtain the plant dye; then add water to the plant dye Prepared as a 1g / L dye solution;

[0019] b. Pulverize the indigo, add an organic solvent to the plant material at a ratio of 1:5 to the material-to-liquid ratio, heat and reflux for extraction for 1 hour, filter the extract, concentrate the filtrate, and dry to obtain the plant dye; then add water to the plant dye to prepare 1g / L dye solution, then add caustic soda to the dye solution to a concentration of 1.0g / L, and sodium hydrosulfite to a concentration of 0.5g / L, and reduce at 30°C for 10 minutes;

[0020] c. Mix the two dye solutions prepared in steps a) and b) at a volume ratio of 10:1 and add them to the cotton fabric for dyeing. The bath ratio is 1:30, and adjust the pH value of the mixed dye solution to 4...

Embodiment 2

[0025] a. Pulverize the hematoxylin, add water to the plant material according to the ratio of material to liquid 1:50, extract at 30°C for 1 hour, filter the extract, concentrate the filtrate, and dry it to obtain the plant dye; then add water to the plant dye Prepared as a 5g / L dye solution;

[0026] b. Grind Coptidis rhizome, add water to the plant material according to the ratio of material to liquid ratio of 1:25, extract at 10°C for 0.5h, filter the extract, concentrate the filtrate, and dry to obtain plant dye; then add water to the plant dye Prepared as a 10g / L dye solution;

[0027] c. Mix the two dye liquors prepared in steps a) and b) at a ratio of 1:1 by volume and add them to cotton fabrics for dyeing. The liquor ratio is 1:50, and adjust the pH value of the mixed dye liquor to 8. Dyeing at 100°C for 90 minutes;

[0028] d. Add water to the sodium glutamate to prepare a 10g / L solution, then add 30v% acetic acid equal to the color fixing agent to the solution, an...

Embodiment 3

[0032] a. Pulverize the hematoxylin, add clear water to the plant raw material according to the ratio of material to liquid of 1:25, extract at 20°C for 0.8h, filter the extract, concentrate the filtrate, and dry to obtain the plant dye; then the plant dye Add water to prepare a 5g / L dye liquor;

[0033] b. Pulverize the indigo, add an organic solvent to the plant material at a ratio of 1:10 to the material to liquid ratio, heat and reflux for extraction for 2 hours, filter the extract, concentrate the filtrate, and dry to obtain the plant dye; then add water to the plant dye to prepare 5g / L dye solution, then add caustic soda to the dye solution to a concentration of 5g / L, and sodium hydrosulfite to a concentration of 5g / L, and reduce at 60°C for 15 minutes;

[0034] c. Mix the two dye solutions prepared in steps a) and b) at a volume ratio of 5:1 and add them to cotton fabrics for dyeing. The bath ratio is 1:40, and adjust the pH value of the mixed dye solution to 7. Dyeing...

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Abstract

The invention provides a method for dyeing cotton fabrics through color matching of natural vegetable dyes. The method comprises the following steps: preparing a dyeing solution from two different vegetable raw materials according to different extraction methods, and reasonably blending a mixed dyeing solution for dyeing the cotton fabrics according to the dyeing performance of the dyeing solution so as to obtain different colors. The defect that the vegetable dyes are single in colors and types is overcome, the colors and types of the vegetable dyes on the cotton fabrics are enriched, and the dyed cotton fabrics are uniform in color, soft and natural in luster, high in color fastness and difficult to fade and discolor.

Description

technical field [0001] The invention belongs to the technical field of printing and dyeing, and in particular relates to a method for color-matching and dyeing cotton fabrics with a natural vegetable dye. Background technique [0002] Vegetable dyeing is mainly a method of dyeing by using some pigments such as bark, leaves, roots, fruits, flowers, and stems. From the perspective of the dyeing process of plant dyes, some natural plant pigments have better solubility in water, and the dye solution can be directly fixed on the fabric, while some plant pigments need to be complexed with a mordant to make them on the fabric. fixed. There are also some fabric pigments that are insoluble in water and need to be fixed on the fibers by utilizing their different solubility to acid and alkaline solutions. Plant dyes and their processes are environmentally friendly and healthy dyes. Most plant dyes have good compatibility with the ecological environment, are biodegradable, and have lo...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06P1/34D06P1/22D06P1/40D06P3/60D06P5/10D06P5/04
Inventor 李振新
Owner 李振新
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