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Preparation method and dyeing method of terylene dyeable natural dye

A technology of natural dyes and dyeing methods, applied in the field of dyes and textile dyeing, to achieve the effect of easy realization, dyeability and good mechanical properties

Inactive Publication Date: 2019-09-27
QUANZHOU NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Polyester fiber is composed of short aliphatic hydrocarbon chains, ester groups, and terminal alcohol hydroxyl groups. The molecular chains are closely arranged. Except for two terminal alcohol hydroxyl groups, there are no other hydrophilic groups in the molecular chain, so it shows lipophilicity and hydrophobicity. , cannot be dyed with hydrophilic natural dyes

Method used

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Examples

Experimental program
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Effect test

preparation example Construction

[0024] A kind of preparation method of polyester dyeable natural dye, it comprises the steps:

[0025] (1) Dye extraction: using the method of solvent extraction, the vegetable dye raw material is mixed with the solvent, and the natural dye is refluxed and extracted in a constant temperature oil bath at 70-100 ℃ for 6-12 hours, and then the obtained solution is concentrated by rotary evaporation to obtain concentrated extract;

[0026] (2) Dye granulation: Add the neutral electrolyte salt as the dye carrier to the concentrated extract, mix evenly, and then spray dry to obtain dye granules to obtain polyester dyeable natural dyes.

[0027] Furthermore, the solvent described in step (1) is a mixture of at least one of acetone, absolute ethanol, ethyl acetate, and N,N-dimethylacetamide.

[0028] Further, in step (1), after mixing the vegetable dye raw material with the solvent, the natural dye was refluxed and extracted in a constant temperature oil bath at 70-80 °C for 8-12 h. ...

Embodiment 1

[0043] A kind of preparation method and dyeing process of polyester dyeable natural dye, it comprises the following steps:

[0044] (1) Dye extraction: using solvent extraction method, using acetone:absolute ethanol volume ratio 1:1 as solvent, adding plant dye raw materials in a constant temperature oil bath at 80°C and performing Soxhlet extraction treatment of natural dyes for 10 h, The resulting solution was concentrated by rotary evaporation to obtain a concentrated extract.

[0045] (2) Dye granulation: carry out dye granulation on the concentrated extract in step (1), add neutral electrolyte sodium sulfate at a mass ratio of 1:5 as a dye carrier, mix evenly, and then spray dry.

[0046] (3) Dyeing: In a mixed solution with a sodium hydroxide concentration of 4 g / L and a degreaser concentration of 5 g / L, the polyester fabric was pretreated at 90 °C for 20 min, and then treated with 80 °C Washing in hot water; then weigh the dye prepared in step (2) to prepare a dye solu...

Embodiment 2

[0049] A kind of preparation method and dyeing process of polyester dyeable natural dye, it comprises the following steps:

[0050] (1) Dye extraction: using solvent extraction method, using acetone:ethyl acetate volume ratio 2:1 as solvent, adding plant dye raw materials in a constant temperature oil bath at 80°C and performing Soxhlet extraction of natural dyes for 8 h, The resulting solution was concentrated by rotary evaporation to obtain a concentrated extract.

[0051](2) Dye granulation: carry out dye granulation on the concentrated extract in step (1), add neutral electrolyte potassium chloride at a mass ratio of 1:3 as a dye carrier, mix evenly, and then spray dry.

[0052] (3) Dyeing: In a mixed solution with a sodium hydroxide concentration of 5 g / L and a degreaser concentration of 6 g / L, the polyester fabric was pretreated at 100 °C for 30 min, and then dyed with 80 °C Washing in hot water; then weigh the dye prepared in step (2) to prepare a dye solution, and add...

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Abstract

The invention discloses a preparation method and a dyeing method of a terylene dyeable natural dye. The preparation method comprises following steps: 1, a plant dye raw material is mixed with a solvent, reflux extraction processing is carried out for 6 to 12h in a constant temperature oil bath, and an obtained solution is subjected to rotary evaporation condensation to obtain a concentrated extracted solution; 2, a neutral electrolyte salt is added into the concentrated extracted solution for uniform mixing as a dye carrier, and spray drying is carried out to obtain the terylene dyeable natural dye. The dyeing method comprises following steps: 1, terylene fiber is subjected to pretreatment, and hot water washing, the terylene dyeable natural dye is prepared into a dyeing solution, the processed terylene fiber is immersed into the dyeing solution for dyeing; and 2, after dyeing, the terylene fiber is subjected to leaching soaping, is washed with clear water, and is dried so as to finish dyeing. The preparation method and the dyeing method can be used in terylene scattered fiber or fabric dyeing; the dye preparation method is suitable for extraction of a plurality of kinds of natural animal and plant source natural dyes; application range is wide; the obtained products possess advantages such as uniform color, excellent colour fastness to washing, health care skin friendly function, and excellent comprehensive performance.

Description

technical field [0001] The invention relates to the technical field of dyes and textile dyeing, in particular to a preparation method and a dyeing method of polyester dyeable natural dyes. Background technique [0002] With the enhancement of people's awareness of environmental protection and the safety problems caused by synthetic dyes, plant dyes that are pure natural extraction, renewable and biodegradable, have good environmental compatibility, and have certain health care functions have attracted people's strong interest again. . At present, the research on the dyeing of natural dyes is mainly focused on the protein fiber and cellulose fiber. After the process is rationally designed, the dyeing effect and excellent color fastness of the project can be obtained. Polyester fiber is currently the largest and most widely used fiber variety in the world, and is widely used in clothing, bedding, decorative fabrics, military textiles and other fields. Polyester fiber is comp...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09B61/00C09B67/54D06P1/34D06P3/52
CPCC09B61/00C09B67/0095C09B67/0096D06P1/34D06P3/52
Inventor 齐欢黄智健林晓芳张晓冉刘陈李秋红傅鸿海陈杨轶
Owner QUANZHOU NORMAL UNIV
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