A Low-temperature Dyeing Method for Improving the Strength of Wool Textiles

Abstract

The invention relates to a low-temperature dyeing method capable of improving strength of a wool textile and belongs to the field of textile printing, dyeing and finishing. According to the low-temperature dyeing method, a dyeing liquid and a dyeing technology route are changed, and the wool textile with a pre-treating liquid is dyed at low temperature in the dying liquid which is formed by mixing high-proportion ethanol, a small amount of water and dyes. The method is capable of reducing the strength loss of wool and enhancing the utilization rate and the dye-uptake rate of the dye, thus the wool textile has a good level-dyeing property, and both luster and wearability can be improved; in addition, the use amount of water in the dyeing technology of the wool textile can be reduced, and the use amounts of auxiliaries are effectively reduced. The method is simple in technology and low in cost; besides, since ethanol can be recycled, the method is safe, energy-saving, economical and environment-friendly.

Description

technical field

[0001] The invention relates to a low-temperature dyeing method for improving the strength of wool textiles, belonging to the field of textile printing and dyeing processing. Background technique

[0002] In traditional wool dyeing, in order to obtain better level dyeing and make the dye penetrate into the fiber, generally the wool fiber is continuously dyed for a long time when the dye solution is boiling or near boiling. Due to the limitations of dyes and equipment, the pH range of wool dyeing is generally 2 to 7. Dyeing under such traditional long-term high-temperature boiling conditions will cause various forms of loss of wool, especially the strength of wool fibers. The loss not only reduces the production efficiency and output, but also affects the feel and vividness of the dyed product, and finally even affects the quality and performance of the product.

[0003] Therefore, with the advancement of science and technology and the needs of wool products,...

Examples

Embodiment 1

[0037] According to the above process steps: wool loose fiber is selected as the textile to be dyed, and the dyestuff is selected as reactive dyestuff for wool. Acetic acid and nonionic surfactant are placed in the mixed solution of ethanol and water, and the pretreatment solution is prepared after stirring evenly, wherein the bath ratio of the pretreatment solution is 1:30, and the volume ratio of ethanol and water in the pretreatment solution 95%: 5%, the pH of the pretreatment solution is 4, and the concentration of the nonionic surfactant is 5g / L; the loose wool fibers to be dyed are soaked in the pretreatment solution, and the liquid carrying rate of the wool textile after soaking is 95%: 5%. It is 100%; put reactive dyes for wool in the mixture of ethanol and water, stir evenly and then prepare the dye solution, wherein the bath ratio of the dye solution is 1:50, and the volume ratio of ethanol and water is 95%:5 %, the concentration of the dye is 3% of the weight of the...

Embodiment 2

[0042] According to the above process steps: wool tops are selected as the textiles to be dyed, and acid dyes are selected as the dyestuffs. Put acetic acid-sodium acetate in the mixed solution of ethanol and water, stir it evenly and prepare the pretreatment solution, wherein the bath ratio of the pretreatment solution is 1:5, and the volume ratio of ethanol and water in the pretreatment solution is 50% : 50%, the pH of the pretreatment solution is 5, the wool top to be dyed is placed in the pretreatment solution and soaked, the liquid rate of the wool top after soaking is 50%; the acid dye is placed in the mixed solution of ethanol and water , after stirring evenly, it is prepared into a dye solution, wherein the bath ratio of the dye solution is 1:10, the volume ratio of ethanol and water is 50%:50%, and the concentration of the acid dye is 5% of the wool bulk fiber weight. The finished wool loose fibers are placed in the dyeing liquor, the initial temperature of the dyeing...

Embodiment 3

[0047] According to the above process steps: wool yarn is selected as the textile to be dyed, the dye is selected from reactive dyes for wool, acetic acid and non-ionic surfactant are placed in the mixed solution of ethanol and water, and the pretreatment solution is prepared after stirring evenly. , the bath ratio of pretreatment liquid is 1:10, and the volume ratio of ethanol and water is 70%:30% in the pretreatment liquid, and the pH of pretreatment liquid is 4, and the concentration of nonionic surfactant is 2g / L; The wool yarn to be dyed is soaked in the pretreatment solution, and the liquid-carrying rate of the wool yarn after soaking is 70%; the reactive dye for wool is placed in the mixed solution of ethanol and water, and the dyeing solution is prepared after stirring evenly. Wherein, the bath ratio of the dyeing solution is 1:20, the volume ratio of ethanol and water is 70%:30%, the concentration of the dyestuff is 3% of the wool textile weight, and the wool yarn afte...

technical field

[0001] The invention relates to a low-temperature dyeing method for improving the strength of wool textiles, belonging to the field of textile printing and dyeing processing. Background technique

[0002] In traditional wool dyeing, in order to obtain better level dyeing and make the dye penetrate into the fiber, generally the wool fiber is continuously dyed for a long time when the dye solution is boiling or near boiling. Due to the limitations of dyes and equipment, the pH range of wool dyeing is generally 2 to 7. Dyeing under such traditional long-term high-temperature boiling conditions will cause various forms of loss of wool, especially the strength of wool fibers. The loss not only reduces the production efficiency and output, but also affects the feel and vividness of the dyed product, and finally even affects the quality and performance of the product.

[0003] Therefore, with the advancement of science and technology and the needs of wool products,...

Examples

Embodiment 1

[0037] According to the above process steps: wool loose fiber is selected as the textile to be dyed, and the dyestuff is selected as reactive dyestuff for wool. Acetic acid and nonionic surfactant are placed in the mixed solution of ethanol and water, and the pretreatment solution is prepared after stirring evenly, wherein the bath ratio of the pretreatment solution is 1:30, and the volume ratio of ethanol and water in the pretreatment solution 95%: 5%, the pH of the pretreatment solution is 4, and the concentration of the nonionic surfactant is 5g / L; the loose wool fibers to be dyed are soaked in the pretreatment solution, and the liquid carrying rate of the wool textile after soaking is 95%: 5%. It is 100%; put reactive dyes for wool in the mixture of ethanol and water, stir evenly and then prepare the dye solution, wherein the bath ratio of the dye solution is 1:50, and the volume ratio of ethanol and water is 95%:5 %, the concentration of the dye is 3% of the weight of the...

Embodiment 2

[0042] According to the above process steps: wool tops are selected as the textiles to be dyed, and acid dyes are selected as the dyestuffs. Put acetic acid-sodium acetate in the mixed solution of ethanol and water, stir it evenly and prepare the pretreatment solution, wherein the bath ratio of the pretreatment solution is 1:5, and the volume ratio of ethanol and water in the pretreatment solution is 50% : 50%, the pH of the pretreatment solution is 5, the wool top to be dyed is placed in the pretreatment solution and soaked, the liquid rate of the wool top after soaking is 50%; the acid dye is placed in the mixed solution of ethanol and water , after stirring evenly, it is prepared into a dye solution, wherein the bath ratio of the dye solution is 1:10, the volume ratio of ethanol and water is 50%:50%, and the concentration of the acid dye is 5% of the wool bulk fiber weight. The finished wool loose fibers are placed in the dyeing liquor, the initial temperature of the dyeing...

Embodiment 3

[0047] According to the above process steps: wool yarn is selected as the textile to be dyed, the dye is selected from reactive dyes for wool, acetic acid and non-ionic surfactant are placed in the mixed solution of ethanol and water, and the pretreatment solution is prepared after stirring evenly. , the bath ratio of pretreatment liquid is 1:10, and the volume ratio of ethanol and water is 70%:30% in the pretreatment liquid, and the pH of pretreatment liquid is 4, and the concentration of nonionic surfactant is 2g / L; The wool yarn to be dyed is soaked in the pretreatment solution, and the liquid-carrying rate of the wool yarn after soaking is 70%; the reactive dye for wool is placed in the mixed solution of ethanol and water, and the dyeing solution is prepared after stirring evenly. Wherein, the bath ratio of the dyeing solution is 1:20, the volume ratio of ethanol and water is 70%:30%, the concentration of the dyestuff is 3% of the wool textile weight, and the wool yarn afte...