Supercritical carbon dioxide one-step dyeing method using natural pigment

A technology of carbon dioxide and dyeing method, which is applied in the field of textile printing and dyeing, can solve the problems of wastewater treatment and environmental pollution, and achieve the effect of low comprehensive cost, significant environmental benefits and good dyeing quality

Inactive Publication Date: 2007-05-16
DALIAN POLYTECHNIC UNIVERSITY +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the dyeing method is still dyed by dipping, and there are still problems of wastewater treatment and environmental pollution.
At present, there is no dyeing technology that uses natural dyes to be directly dyed after extraction

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] Embodiment 1: be 0.25mm with turmeric pulverizing particle size, quality 1.5g, be placed in the dye kettle of supercritical carbon dioxide dyeing device. Take 30g of chemical fiber fabrics and wind them on the distributor and place them in the dyeing kettle. Turn on the heating system and refrigeration system to make the device reach the required temperature of 120°C for extraction and dyeing; turn on the high-pressure system to make the device reach the required pressure of 27Mpa for extraction and dyeing; separation pressure: 4-5MPa. After 90 minutes, the extraction and dyeing are completed in one step. The dyed fabric is yellow, and the color fastness to rubbing is grade 4 and the color fastness to washing can reach grade 5.

Embodiment 2

[0051] Embodiment 2: the turmeric pulverizing particle size is 0.75mm, quality 2g, is placed in the dye kettle of supercritical carbon dioxide dyeing device. Take 30g natural protein fabric and wrap it on the distributor, place it in the dyeing kettle. Turn on the heating system and refrigeration system to make the device reach the required temperature of 80°C for extraction and dyeing; turn on the high-pressure system to make the device reach the required pressure of 23Mpa for extraction and dyeing; separation pressure: 4-5MPa. After 50 minutes of extraction and dyeing, one step is completed. The dyed fabric is light yellow, the color fastness to rubbing is 3-3.5 and the color fastness to washing can reach 3.5-4.5.

Embodiment 3

[0052] Embodiment 3: the turmeric pulverizing particle size is 2mm, quality 4g, is placed in the dye kettle of supercritical carbon dioxide dyeing device. Take 30g of natural cellulose fabric and wrap it on the distributor and place it in the dyeing kettle. Turn on the heating system and refrigeration system to make the device reach the required temperature of 100°C for extraction and dyeing; turn on the high-pressure system to make the device reach the required pressure of 25Mpa for extraction and dyeing; separation pressure: 4-5MPa. After 70 minutes of extraction and dyeing, one step is completed. The dyed fabric is light yellow, the color fastness to rubbing is grade 3 and the color fastness to washing can reach grade 3-4.

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Abstract

The invention relates to natural pigment supercritical carbon dioxide one step dyeing method. The technological process is: placing the natural pigment raw materials disintegrated and the fabric materials in supercritical carbon dioxide dyeing device; abstraction and dyeing for 50 ~ 120min in the condition of 70~150degreeC, 18-30MPa in one step; then releasing the pressure and recovering the carbon dioxide and pigment under 4-5MPa; recovering to normal and preparing dyeing fabric. Said fabric fibers are natural cellulose fiber, natural protein fiber and chemical fiber. The prominent characteristic of the invention is: it achieves the abstraction of natural pigments and the dyeing fabric completed in one step. The dyeing quality of fabric fiber is fine, process is short, and it achieves cleaning production of no abandoned products and pollution-free; the integrated cost is low, but the economic efficiency and environmental benefits are notable. Particularly, the natural pigment raw materials are medicinal plants usually, so the fiber fabric dyed could be given special medicinal function prospects.

Description

technical field [0001] The invention belongs to the field of textile printing and dyeing. It specifically relates to the textile printing and dyeing technology using dyes dissolved in a supercritical state, especially relates to the supercritical extraction dyeing technology with natural dyes. Background technique [0002] In 1987, the United Nations proposed the strategy of "sustainable development". In September 1996, the International Organization for Standardization (ISO) announced the ISO14000 environmental management system, aiming at promoting the coordinated development of economy and environment. In 1996, Germany promulgated regulations to prohibit the production, import and sale of textiles containing harmful amine azo dyes. my country also put forward the strategy of clean production and sustainable development at the National Textile Work Conference in 1999. [0003] The problem of resources and environment is a fundamental and strategic issue that human societ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06P1/94D06P1/34D06P3/60
Inventor 郑来久
Owner DALIAN POLYTECHNIC UNIVERSITY
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