Preparation method for vegetable tannin dye liquor and application thereof to dyeing aspect of real silk fabric

A technology of plant tannin and dye liquor, applied in the field of textile dyes, can solve the problems of restricting the popularization and application of natural dyeing materials, low dyeing fastness of silk fabrics, and low utilization rate of resources, etc., and achieves good industrial promotion prospects, significant ecological significance, Improve the effect of environmental degradation

Inactive Publication Date: 2012-01-18
SOUTH CHINA AGRI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the defects such as the low dye fastness of these dyeing materials to real silk fabrics have been technical problems that have not been solved for a long time in this technical field. Since the 1960s, the above-mentioned plant dyeing materials have basically stopped being used for dyeing, and are mainly used as traditional Chinese medicine.
However, the current output of tannin extract in my country is less than 500 million kg, and the product value is not high (the current price of tannin extract is 4,000-8,000 yuan/1,000 kg), and most tannin raw materials (such as bark from logging, branches from pruning fruit trees) are used as Discarded as waste, resource utilization rate is very low
The plant dyeing materials

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

[0053] Larch bark powder (purchased from Inner Mongolia Sengong Extract Products Co., Ltd., 100 mesh), glacial acetic acid, sodium carbonate and iron sulfate are all commercially available.

[0054] Preparation of larch tannin dye solution: Weigh 100 g of larch bark powder and add 800 ml of distilled water, stir evenly, shake and extract at 80° C. for two hours, filter the extract to obtain a larch dye solution.

[0055] Using the forestry industry standard LY / T1082-2008 of the People's Republic of China "Analysis and Test Method for Tannin Extract", ferrous tartrate-spectrophotometry, vanillin-hydrochloric acid method or n-butanol-hydrochloric acid method to determine the content of tannin in the dyeing liquor is about 7 ~14%.

[0056] dyeing:

[0057] (1) Take clean silk fabrics for whitening, add larch dyeing liquor at a liquor ratio of 1:50, dyeing temperature is 80°C, adjust the pH of the dyeing liquor to 5, 7, and 8 with glacial acetic acid and sodium carbonate, and dye...

Embodiment 2

[0060] Red bayberry bark powder: wash the bayberry bark, dry it until the moisture content is lower than 40%, put it in a forced air oven and bake it at 85°C for 90 minutes, and grind it to 60 mesh to get the red bayberry bark powder. Glacial acetic acid, sodium carbonate, alum and ferric chloride are all commercially available.

[0061] Preparation of bayberry tannin dyeing solution: Weigh 100 g of bayberry bark powder and add 1000 ml of 80% acetone solution, conduct ultrasonic extraction at 50°C for 60 minutes (min), filter the extract to obtain arbutus chinensis dyeing solution.

[0062] Using the People's Republic of China forestry industry standard LY / T1082-2008 "Analysis and Test Method for Tannin Extract", ferrous tartrate-spectrophotometry, vanillin-hydrochloric acid method or n-butanol-hydrochloric acid method to determine the tannin content of bayberry dyeing solution is about 16 ~24%.

[0063] dyeing:

[0064] (1) Take clean silk fabrics for whitening, add the abo...

Embodiment 3

[0068] Black wattle extract (purchased from Guangxi Wuming extract factory), glacial acetic acid, sodium carbonate, iron sulfate and titanium sulfate are all commercially available.

[0069] Preparation of black wattle tannin dye solution: Weigh 10g black wattle extract and dissolve in 90ml distilled water, stir at 40°C for 15 minutes, let stand for 30 minutes, filter the obtained filtrate to be black wattle tannin dye solution.

[0070] Using the forestry industry standard LY / T1082-2008 of the People's Republic of China "Analysis and Test Method for Tannin Extract", ferrous tartrate-spectrophotometry, vanillin-hydrochloric acid method or n-butanol-hydrochloric acid method, the tannin content of black wattle dyeing liquor is about 28 ~41%.

[0071] dyeing:

[0072] (1) Take a clean silk fabric for whitening, add the above-mentioned black wattle tannin dye solution at a bath ratio of 1:50, dyeing temperature is 60°C, pH value is 6.5, and dyeing time is 90 minutes; then take ou...

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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Abstract

The invention discloses a preparation method for vegetable tannin dye liquor and application thereof to the dyeing aspect of a real silk fabric. The vegetable tannin dye liquor is obtained by extracting larch bark, waxberry bark, black wattle bark, valonia or gallnut serving as a raw material by using acetone or water as an extracting agent or is obtained by extracting a tannin extract product of larch, waxberry, black wattle, valonia or gallnut serving as the raw material by using water as the extracting agent. The vegetable tannin dye liquor prepared by adopting the method or a dye prepared from the dye liquor is applied to dyeing the real silk fabric; the dyeing effect is obvious; the technical problem of low dyeing fastness of a plant dye in the prior art is effectively solved; and an abundant dyeing effect can be achieved by combining a mordanting technology. The raw material selected by the invention is the bark or a byproduct of forest trees and fruit trees which are planted in abundance and are rich in resources; and the dye liquor has obvious resource advantage and broad application prospect.

Description

technical field [0001] The invention belongs to the technical field of textile dyes, and in particular relates to a preparation method of vegetable tannin dye solution and its application in the dyeing of real silk fabrics. Background technique [0002] Since the 1980s and 1990s, the modern printing and dyeing industry has produced more and more serious environmental pollution problems, and there have also been more pathological reports about synthetic dyes endangering human health, making people re-examine the ecological problems of the printing and dyeing industry. Vegetable dyes have received great attention due to their environmental protection and safety characteristics. Silk fabrics have always been loved by consumers. With the improvement of people's living conditions, the demand and quality requirements for silk fabrics are getting higher and higher, and the printing and dyeing technology of silk fabrics is also facing environmental protection and safety requirements...

Claims

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Application Information

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IPC IPC(8): C09B61/00C09B65/00D06P1/34D06P3/04
Inventor 李维贤师严明姜清香蒋毅
Owner SOUTH CHINA AGRI UNIV
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