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Homochromatic dyeing process for chitin-containing viscose-fiber fabric

A technology of chitin viscose and fiber fabrics, applied in the field of dyeing, which can solve the problems of difficult dye migration and diffusion, color flower and uneven dyeing, etc., so as to avoid high-level adsorption, remarkable adsorption effect, Excellent effect of same color

Active Publication Date: 2016-11-09
ANHUI YAYUAN PRINTING & DYEING CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

After the reactive dye is combined with the chitin fiber, the Coulomb attraction, hydrogen bond and van der Waals force between the dye and the chitin fiber macromolecules act together to form a firm bond. It is also difficult to make up for uneven dyeing

Method used

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  • Homochromatic dyeing process for chitin-containing viscose-fiber fabric

Examples

Experimental program
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Effect test

Embodiment 1

[0019] In the present embodiment, a kind of homochromatic dyeing process that contains chitin viscose fiber fabric comprises the steps:

[0020] S1, pretreatment, immerse the viscose fiber fabric containing chitin in isopropanol, add a sodium hydroxide solution with a content of 25 wt%, stir evenly, then add etherifying agent CTA, stir and react at 60°C for 2 hours, add hydrochloric acid After the pH is adjusted to 10-11, the solvent is drained, washed with water, and dried. The weight ratio of the viscose fiber fabric containing chitin, sodium hydroxide solution, and etherifying agent CTA is 1:0.01:0.1;

[0021] S2, Reactive dyeing, immerse the fabric obtained by S1 into the reactive dye solution, adjust the bath ratio to 1:10, heat up to the initial dyeing temperature of 60°C at a rate of 2°C / min and keep it warm for 10min, add acetone, acetone The volume ratio with the reactive dye solution is 1:3, heat up to the dyeing temperature at a rate of 0.5°C / min to 100°C and keep i...

Embodiment 2

[0024] In the present embodiment, a kind of homochromatic dyeing process that contains chitin viscose fiber fabric comprises the steps:

[0025] S1, pretreatment, immerse the viscose fiber fabric containing chitin in isopropanol, add sodium hydroxide solution with a content of 35wt%, stir evenly, then add etherification agent CTA, stir and react at 40°C for 4h, add hydrochloric acid After the pH is adjusted to 10-11, the solvent is drained, washed with water, and dried. The weight ratio of the viscose fiber fabric containing chitin, sodium hydroxide solution, and etherifying agent CTA is 1:0.5:0.01;

[0026] S2, active dyeing, immerse the fabric obtained through S1 treatment into the reactive dye solution, adjust the bath ratio to 1:5, heat up to the initial dyeing temperature of 40°C at a speed of 3°C / min and keep it warm for 30min, add hexanone, The volume ratio of hexanone and reactive dye liquor is 1:1, heat up to the dyeing temperature of 80°C at a rate of 1°C / min and kee...

Embodiment 3

[0029]In the present embodiment, a kind of homochromatic dyeing process that contains chitin viscose fiber fabric comprises the steps:

[0030] S1, pretreatment, immerse the viscose fiber fabric containing chitin in isopropanol, add a sodium hydroxide solution with a content of 30 wt%, stir evenly, then add etherifying agent CTA, stir and react at 50°C for 3h, add hydrochloric acid After the pH is adjusted to 10-11, the solvent is drained, washed with water, and dried. The weight ratio of the viscose fiber fabric containing chitin, sodium hydroxide solution, and etherifying agent CTA is 1:0.2:0.5;

[0031] S2, Reactive dyeing, immerse the fabric obtained by S1 treatment into the reactive dye solution, adjust the bath ratio to 1:7, raise the temperature to the initial dyeing temperature of 50°C at a speed of 2.5°C / min and keep it warm for 20min, add ethyl acetate , the volume ratio of ethyl acetate and reactive dye liquor is 1:2, heat up to the dyeing temperature of 90°C at a r...

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Abstract

The invention discloses a homochromatic dyeing process for a chitin-containing viscose-fiber fabric. The method comprises the following steps: (S1) carrying out pretreatment: submerging the chitin-containing viscose-fiber fabric into isopropyl alcohol, adding a sodium hydroxide solution, carrying out uniform stirring, then, adding an etherifying agent CTA, carrying out a reaction with stirring, pumping off a solvent, carrying out water washing, and carrying out baking; (S2) carrying out reactive dyeing: submerging the fabric into a reactive dye dyeing solution, heating the reactive dye dyeing solution to a primary dyeing temperature, adding an organic solvent B, heating the solution to a dyeing temperature, then, adding organic base and sodium carbonate according to the volume of the reactive dye dyeing solution, then, cooling the solution to a color fixation temperature, carrying out heat preservation, cooling the solution to room temperature; (S3) carrying out aftertreatment: washing the fabric by water, carrying out soaping, carrying out water washing again, and carrying out air-drying. According to the homochromatic dyeing process for the chitin-containing viscose-fiber fabric, the defect that the dyeing rate of chitin viscose fibers is relatively high can be overcome, a uniform and consistent dyeing effect is obtained, and the homochromatic dyeing process has the advantages of high color fastness and simple process.

Description

technical field [0001] The invention relates to the technical field of dyeing, in particular to a homochromatic dyeing process for chitin-containing viscose fiber fabrics. Background technique [0002] Chitin fiber has antibacterial and deodorizing functions, and also has the advantages of biodegradability, and has been widely used in textile fabrics. For the dyeing process of chitin fiber, dyeing and finishing scientists have done some research, and achieved better dyeing effect by using reactive dyes and direct dyes. However, in the dyeing process of reactive dyes, because the initial dyeing rate of chitin fibers is relatively high, uneven dyeing and color blooms are prone to occur. For example, during jigger dyeing, it is easy to see that the two ends of the material are dark in color and the middle color is light, especially some light colors and sensitive colors such as gray and brown, which are more obvious. Even in the same-bath dyeing process of chitin fiber and ot...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06P3/85D06P3/84D06P1/38D06P1/44D06P1/66D06P5/10
CPCD06P1/38D06P1/445D06P1/66D06P3/828D06P5/10
Inventor 潘学东
Owner ANHUI YAYUAN PRINTING & DYEING CO LTD
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