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Polyester textile dyeing method

A dyeing method and textile technology, applied in the field of polyester textile dyeing, can solve the problems of poor biodegradability, environmental pollution, heavy odor, etc., and achieve the effects of uniform dyeing, energy saving and wide application range

Active Publication Date: 2019-09-13
WUHAN TEXTILE UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, most of the carriers currently used in China are emulsified wintergreen oil, emulsified methyl naphthalene, emulsified benzyl ester, organochlorine, and banned aromatic amines. These carriers have heavy odor, high toxicity, poor biodegradability, and pollute the environment, so the carrier is limited. Application in dyeing of polyester and its blended products

Method used

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  • Polyester textile dyeing method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] A method for dyeing polyester textiles, comprising the steps of:

[0035] S1. Preparation of slurry: at a stirring rate of 600r / min, slowly add 20g of polyvinyl alcohol with a degree of polymerization of 1000 and 1g of sodium lauryl sulfate into 100mL of deionized water, and stir at 70°C for 6h to make the polyvinyl alcohol Dissolved to obtain a slurry for subsequent use;

[0036] S2. Pretreatment of polyester textiles: boil the polyester staple fibers to be dyed in hot water at 70°C for 40 minutes for pretreatment;

[0037] S3. Dyeing slurry preparation: sequentially add 1g of disperse dye and 0.3g of penetrant JFC to the slurry prepared in step S1, heat up to 80°C, stir at 600r / min for 4h to make it evenly mixed, then add acetic acid to adjust the pH of the solution to 5, get dyeing paste;

[0038] S4. Dyeing: heat the dyeing slurry prepared in step S3 to 90°C, immerse the polyester textile pretreated in step S2 in the dyeing slurry for 25 minutes, and pass through ...

Embodiment 2-12

[0040] Embodiment 2-12 provides a kind of dyeing method of polyester textiles, compared with embodiment 1, the difference is that in step S1, the polyvinyl alcohol consumption, polyvinyl alcohol polymerization degree or the mass fraction of surfactant are changed, the specific dosage And the breaking strength and elongation at break of polyester textiles measured after dyeing are shown in the table below.

[0041]

[0042]

Embodiment 13-19

[0051] Embodiment 13-19 provides a kind of dyeing method of polyester textiles, compared with embodiment 1, the difference is that the stirring conditions in step S1 are changed, the specific condition parameters and the breaking strength and elongation at break of polyester textiles measured after dyeing The rates are shown in the table below.

[0052]

[0053] Comparing the breaking strength and elongation at break and the strength damage results of the dyed polyester textiles of Example 1 and Examples 13 to 14, it can be seen that with the increase of the mixing and stirring heating temperature in step S1, the breaking strength and elongation of the fabric after dyeing will increase. The elongation and strength damage properties are enhanced; when the temperature exceeds 70°C, the breaking strength and breaking elongation of the dyed fabric do not change much. Therefore, from the point of view of energy saving, the stirring and heating temperature in step S1 is preferabl...

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Abstract

The invention discloses a polyester textile dyeing method and belongs to the technical field of textile processing. The polyester textile dyeing method comprises the following steps: dissolving polyvinyl alcohol into water to prepare pulp, putting dye and a surfactant into the pulp, performing padding treatment on the pretreated polyester textile, baking, enabling dye modules to enter fiber, rapidly dyeing the polyester textile, and solidifying the polyvinyl alcohol on the surface of a polyester yarn to form a film. In the polyester textile dyeing method provided by the invention, the polyvinyl alcohol is non-toxic and degradable, and the dyeing process is green and pollution-free; meanwhile, the polyvinyl alcohol can be solidified on the polyester textile to form the film, rapid dyeing and sizing are realized, the processing process is simple and the time-consuming cycle is short; meanwhile, the rapid dyeing process can be completed on the common sizing machine, consumption of water resources and consumption caused in the high-temperature and high-pressure process are reduced and energy can be effectively saved.

Description

technical field [0001] The invention belongs to the technical field of textile processing, in particular to a polyester textile dyeing method. Background technique [0002] Polyester, whose chemical name is polyethylene terephthalate, is one of the most attractive and competitive synthetic fibers. It has high strength, high modulus and high elastic recovery ability. The textiles formed are durable, wrinkle-resistant and non-ironing. At the same time, it has good light resistance and heat resistance. However, the molecular structure of polyester is dense, neatly arranged, with high crystallinity and orientation, and its fiber structure lacks active groups that can bind to dye molecules like cellulose or protein fibers, making it difficult for the dye liquor to wet it, thus It hinders the adsorption and diffusion of dyes on polyester fibers, making it difficult to dye. [0003] For this reason, disperse dyes are commonly used to dye polyester by carrier dyeing, high temperat...

Claims

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Application Information

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IPC IPC(8): D06P1/16D06P1/52D06P3/54
CPCD06P1/16D06P1/5228D06P3/54
Inventor 夏良君周思婕付专成芸琪朱丽云王运利徐卫林
Owner WUHAN TEXTILE UNIV
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