CN-122013559-A - Natural dye synergistic mordant dyeing method for high-color-depth wool fabric

Abstract

The invention discloses a natural dye collaborative mordant dyeing method for a high-color-depth wool fabric, which comprises the steps of cleaning the wool fabric, removing surface impurities, draining for standby, adding an acid papaya slice into water, heating to boiling, converting to micro boiling, maintaining the micro boiling state, carrying out heat preservation extraction, filtering to obtain a pickled papaya extract, adding deionized water into a dyeing container according to a bath ratio, sequentially adding madder dye, pickled papaya extract and rare earth salt, regulating the pH value of a dyeing bath to 3-4, immersing the wool fabric into the dyeing liquid, heating to 95 ℃ and carrying out heat preservation dyeing, and carrying out post treatment after dyeing is finished.

Inventors

• HANG CAIYUN
• SUN XIYU

Assignees

• 江阴职业技术学院

Dates

Publication Date

20260512

Application Date

20260206

Claims (10)

1. 1. A natural dye synergistic mordant dyeing method for a high-color-depth wool fabric is characterized by comprising the following steps of S1, cleaning wool fabric, removing surface impurities, and draining for later use; S2, adding the pickled papaya slices into water, heating to boil, converting into micro-boiling, maintaining the micro-boiling state for a period of time for extraction, and filtering to obtain pickled papaya extract; s3, sequentially adding the madder dye, deionized water, the pickled Chinese melon extracting solution prepared in the step S2 and rare earth salt into a dyeing container according to a bath ratio, and adjusting the pH value of the dyeing bath to 3-4; S4, immersing the wool fabric treated in the step S1 into the dye liquor of the step S3, heating to 95 ℃ and carrying out heat preservation dyeing; And S5, washing and soaping the wool fabric after dyeing is finished, and drying to obtain the high-color-depth wool fabric.
2. 2. The method for collaborative mordant dyeing of natural dye for high-color-depth wool fabric according to claim 1, wherein in the step S3, the rare earth salt is lanthanum chloride.
3. 3. The method for collaborative mordant dyeing of natural dye of high-color-depth wool fabric according to claim 2, wherein the rare earth salt is 3% -5% of the mass of the wool fabric.
4. 4. The method for collaborative mordant dyeing of high-color-depth wool fabric natural dye according to claim 3, wherein the rare earth salt is 5% of the mass of the wool fabric.
5. 5. The method for collaborative mordant dyeing of natural dye for high-color-depth wool fabric according to claim 1, wherein in the step S3, the pH value of the dye bath is 3.
6. 6. The method for collaborative mordant dyeing of high-color-depth wool fabric natural dye according to claim 1, wherein in the step S2, the dosage ratio of the sour melon pieces to water is 50g to 500mL, and the heat preservation time in the micro-boiling state is 30min.
7. 7. The method for collaborative mordant dyeing of high-color-depth wool fabric natural dye according to claim 1, wherein in the step S3, the bath ratio is 1:30, the amount of the madder dye is 2% owf of the mass of the wool fabric, and the amount of the pickled Chinese cabbage is added according to the conversion of 0.5mL/1g of wool mass.
8. 8. The method for collaborative mordant dyeing of high-color-depth wool fabric natural dye according to claim 1, wherein in the step S4, the heating rate is 1 ℃ per min, the time for thermal dyeing is 60min, and stirring is performed during the dyeing.
9. 9. The method for collaborative mordant dyeing of natural dyes for high color depth wool fabrics according to claim 1, wherein the step S1 comprises immersing the wool fabrics in deionized water, washing for 30min at 80 ℃ to remove surface impurities and draining.
10. 10. The method for collaborative mordant dyeing of high-color-depth wool fabric natural dye according to claim 1, wherein the soaping treatment adopts 2g/L neutral soaping piece washing liquid and is carried out for 15min at 80 ℃.

Description

Natural dye synergistic mordant dyeing method for high-color-depth wool fabric Technical Field The invention relates to the technical field of textile dyeing, in particular to a natural dye synergistic mordant dyeing method for high-color-depth wool fabrics. Background The wool fabric is used as a natural protein fiber product, has excellent wearing properties such as softness, warmth retention, skin friendliness and the like, and is greatly favored by consumers. The natural dye is derived from plants, animals or minerals in nature, has the advantages of environmental protection, no toxicity, degradability and the like, accords with the current development trend of green textiles, and has wide application prospect in wool fabric dyeing. The madder is a traditional natural red dye, the effective dyeing component of which is anthraquinone compound, and can interact with wool fiber to realize dyeing. However, when the madder is used for directly dyeing wool, the problems of insufficient dyeing depth, poor color fastness and the like exist, and the industrial production and actual use requirements are difficult to meet. In order to solve the problems, the prior art mostly adopts a mordant technology, and common mordants comprise single mordants such as aluminum salt, ferric salt, rare earth salt and the like, but the synergy of the single mordants is limited. The papaya is taken as a natural plant raw material, and polyphenol tannins contained in the extracting solution can be taken as a natural mordant synergistic agent to improve the dyeing effect by synergistic effect with a mordant. However, the related report of dyeing wool fabrics by adopting a one-bath one-step method by combining the pickled trichosanthes kirilowii extract, rare earth salt and madder dye is not known in the prior art. The traditional pre-media or post-media step process has the defects of complicated operation, low production efficiency, poor dyeing uniformity and the like, and the dyeing depth of a single mordant or binary mordant combination is limited to be improved, so that the requirement of high-color deep dyeing cannot be met. Therefore, developing a natural dye dyeing process for wool fabric, which has the advantages of simple process, high dyeing depth, excellent color fastness and small damage to fibers, becomes a technical problem to be solved in the current field. Disclosure of Invention The invention aims to provide a natural dye synergistic mordant dyeing method for high-color-depth wool fabric, which aims to solve the problems in the background technology. In order to achieve the aim, the invention provides the technical scheme that the natural dye collaborative mordant dyeing method for the high-color-depth wool fabric comprises the following steps of S1, cleaning wool fabric, removing surface impurities, and draining for later use; S2, adding the pickled papaya slices into water, heating to boil, converting into micro-boiling, maintaining the micro-boiling state for a period of time for extraction, and filtering to obtain pickled papaya extract; s3, sequentially adding the madder dye, deionized water, the pickled Chinese melon extracting solution prepared in the step S2 and rare earth salt into a dyeing container according to a bath ratio, and adjusting the pH value of the dyeing bath to 3-4; S4, immersing the wool fabric treated in the step S1 into the dye liquor of the step S3, heating to 95 ℃ and carrying out heat preservation dyeing; And S5, washing and soaping the wool fabric after dyeing is finished, and drying to obtain the high-color-depth wool fabric. Preferably, in the step S3, the rare earth salt is lanthanum chloride. Preferably, the rare earth salt is used in an amount of 3% -5% of the mass of the wool fabric. Preferably, the rare earth salt is used in an amount of 5% of the mass of the wool fabric. Preferably, in the step S3, the pH value of the dye bath is 3. Preferably, in the step S2, the usage ratio of the sour wood melon slices to water is 50g to 500ml, and the heat preservation time in the micro-boiling state is 30min. Preferably, in the step S3, the bath ratio is 1:30, the use amount of the madder dye is 2% owf of the mass of the wool fabric, and the use amount of the pickled Chinese cabbage melon extract is added according to the conversion of 0.5mL/1g of the mass of the wool. Preferably, in the step S4, the heating rate is 1 ℃ per min, the time for thermal dyeing is 60min, and stirring is performed during the dyeing. Preferably, the step S1 includes immersing the wool fabric in deionized water, washing at 80 ℃ for 30min to remove surface impurities and draining. Preferably, the soaping treatment uses 2g/L neutral soap flake washing liquid and is carried out for 15min at 80 ℃. According to the invention, through the ternary synergistic effect of the rare earth salt, the pickled trichosanthes kirilowii Maxim extract and the madder dye, the dyeing depth and color fastness of the wool fabric are impro