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supercritical co 2 Fluid natural textile dye composition and dyeing method

A technology of textile dyes and dyeing methods, which is applied in the field of selection of natural dyes of three primary colors and dyeing systems, can solve the problems of unseen, single, and less research on color matching, and achieve the effect of avoiding competition dyeing and good compatibility

Active Publication Date: 2020-11-03
亚临界(上海)技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Currently, domestic and foreign supercritical CO 2 In the research of fluid dyeing, most of them are dyed with a single dye, and there are fewer studies on color matching, and there are no patent reports and precedents for practical applications.

Method used

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  • supercritical co <sub>2</sub> Fluid natural textile dye composition and dyeing method
  • supercritical co <sub>2</sub> Fluid natural textile dye composition and dyeing method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] A supercritical CO 2 The dyeing system of the fluid natural textile dye composition comprises a carbon dioxide steel cylinder connected in sequence, a heat exchanger E1, a circulation tank D1, a booster pump D2, a dye kettle D3, a dyeing kettle D4, and a separation kettle D5, and the fluid of the dyeing kettle D4 A circulation pump P2 is also provided between the outlet and the fluid inlet of the dye tank D3.

[0030] A carbon dioxide loop is also provided between the carbon dioxide outlet of the separation tank D5 and the carbon dioxide inlet of the heat exchanger E1. A heat exchanger is connected to the fluid inlet of the dye kettle D3 and the fluid inlet of the dye kettle D4, and a detector of an online monitor is also connected to the fluid outlet of the dye kettle D3 and the fluid outlet of the dye kettle D4.

Embodiment 2

[0032] Utilize the method that embodiment 1 dyeing system carries out dyeing, concrete technological process is:

[0033] (1) Loading and pressurization: Put the textiles into the dyeing kettle, put the above-mentioned natural dyes mixed evenly into the dyeing kettle, connect the whole dyeing system, and fill the carbon dioxide through the booster pump (pressurized to 20~28Mpa) , while controlling the temperature and pressure of the dyeing kettle and dyeing kettle to reach the preset value (20~28Mpa, temperature 110~180℃);

[0034] (2) Dyeing and leveling: close the valves of the booster pump and the separation tank, turn on the circulation pump, and start dyeing, so that the fluid circulates between the dye tank and the dye tank; at the same time, the change of the dye ratio during the dyeing process is detected online until the dyeing process is completed. complete;

[0035] (3) Residual dye recovery: After the dyeing is completed, the system gradually cools down; when the ...

Embodiment 3

[0038] The compatibility of natural dyes is mainly determined by the lifting power and dyeing rate of the dyes. In order to avoid the phenomenon of "competitive dyeing", when we screen three-color dyes, we must require good compatibility of the three dyes. Utilize embodiment 2 dyeing method to carry out the screening of three primary color natural dyes:

[0039] The concentrations of the three dyes are represented by x, y, and z respectively, and the deviation is represented by P; the concentration ratio at the entrance of the dyeing kettle is: x 1 :y 1 :z 1 , the ratio to x is (x 1 / x 1 ):(y 1 / x 1 ):(z 1 / x 1 )=1:(y 1 / x 1 ):(z 1 / x 1 ); The concentration ratio of dyeing kettle outlet is: x 2 :y 2 :z 2 , the ratio relative to x is: 1:(y 2 / x 2 ):(z 2 / x 2 ).

[0040] The proportional deviation of the first set of test data P=(y 2 / x 2 -y 1 / x 1 ) 2 +(z 2 / x 2 -z 1 / x 1 ) 2 , the deviation is 0, indicating that no competition occurs at all, the s...

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Abstract

The invention belongs to the technical field of water-free dyeing of textiles and particularly relates to a technique for dyeing textiles through a three-primary-color natural dye in supercritical CO2fluid. The three-primary-color natural dye is prepared by mixing at least two of radix salviae miltiorrhizae red pigments, turmeric yellow pigments and gardenia blue pigments according to an arbitrary ratio. All the natural dyes are high in compatibility, are applicable to supercritical CO2 fluid dyeing, and can be combined for dyeing the textiles with various colors. A dyeing system comprises acarbon dioxide steel cylinder, a boosting pump, a dye kettle, a dyeing kettle and a separation kettle which are successively connected with each other; a circulation pump is arranged between a fluid outlet of the dyeing kettle and a fluid inlet of the dye kettle; on-line detection is used in the dyeing process of the supercritical CO2 fluid; the ratio change of the three-primary-color dye can be detected in real time; the phenomenon of competitive dyeing is avoided.

Description

technical field [0001] The invention belongs to the technical field of anhydrous dyeing of textiles, and specifically relates to three primary color natural dyes in supercritical CO 2 Fluid dyeing technology for textiles, especially the selection of natural dyes of three primary colors and dyeing systems and methods. [0002] technical background [0003] The dyeing of natural fiber fabrics by natural dyes is the crystallization of the wisdom of the working people of the Chinese nation. But the traditional method is time-consuming, electricity-consuming, water-consuming, and pollutes the environment greatly. Supercritical CO 2 Compared with traditional dyeing methods, fluid dyeing technology has the advantages of water saving, environmental protection, energy saving, and no need to use additives; its pretreatment, dyeing, and cleaning can be completed in one step, and the dyeing time is short, which can shorten the production cycle and improve economic benefits. It is of g...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D06P1/34D06P1/94
CPCD06P1/34D06P1/94
Inventor 郑瑾刘峻岭王帅王杨柳焦明立张晓莉刘凡
Owner 亚临界(上海)技术有限公司
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