Gardenia blue pigment dyeing method for wool fabrics

A technology of gardenia blue pigment and dyeing method, which is applied in the field of gardenia blue pigment dyeing of wool fabrics, can solve the problems of poor high temperature resistance of gardenia blue, increase of dyeing cost, environmental pollution, etc., and achieve saving of dyeing time and reduction of dyeing Cost, reduction of dyeing time effect

Inactive Publication Date: 2018-01-19
TIANJIN POLYTECHNIC UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Due to the poor high temperature resistance of gardenia blue, it is not easy to dye under high temperature conditions. Mordant dyeing or additives are usually used to improve dyeing efficiency and save dyeing time. However, the above methods will not only cause environmental pollution, but also significantly increase dyeing costs.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] (1) Wool fabric pretreatment: the weight is 250g / m 2 Put the woolen fabric into 40°C distilled water to moisten and soak, keep warm for 20 minutes, take it out, wring it dry, and effectively remove the air between the wool fibers.

[0033] (2) Dye solution preparation: dissolve the gardenia blue pigment in distilled water, and prepare a gardenia blue dye solution with a mass concentration of 10 g / L.

[0034] (3) Dyeing process: use 2mol / L acetic acid and 2mol / L sodium acetate to adjust the pH of the dye solution to 2.00, put the pretreated wool fabric in step (1) into the dye solution, and adjust the concentration owf of the dye solution to 2 %(owf), the bath ratio is 1:55, after fully mixing the wool fabric with the dyeing solution, heat it in a sealed container, when the heating temperature rises to 85°C, dye at a constant temperature for 30 minutes, take it out, wash it with water once, and get the preliminary dyeing Wool fabric: Before the temperature rises from ro...

Embodiment 2

[0038] The high-temperature-resistant gardenia blue pigment used in this example is commercially available in the form of brown powder, specifically purchased from, but not limited to, Guangzhou Weilun Food Co., Ltd.

[0039] (1) Wool fabric pretreatment: the weight is 300g / m 2 Wet and soak the woolen fabric in 60°C distilled water, keep it warm for 60 minutes, take it out, and wring it dry.

[0040] (2) Dye liquor preparation: Dissolve the high-temperature-resistant gardenia blue pigment in distilled water, and prepare a high-temperature-resistant gardenia blue dye liquor with a mass concentration of 50 g / L.

[0041](3) Dyeing process: use 0.5mol / L acetic acid and 0.5mol / L sodium acetate to adjust the pH of the dye solution to 5.63, put the pretreated wool fabric in step (1) into the dye solution, and adjust the concentration owf of the dye solution 8% (owf), the bath ratio is 1:200, fully mix the wool fabric with the dye solution, then seal and heat it, when the heating tem...

Embodiment 3

[0045] The high-temperature-resistant gardenia blue pigment used in this example is commercially available in the form of brown powder, specifically purchased from, but not limited to, Guangzhou Weilun Food Co., Ltd.

[0046] (1) Wool fabric pretreatment: the weight is 280g / m 2 Put the woolen fabric in 50°C distilled water to moisten and soak, keep warm for 40 minutes, take it out, wring it dry, and effectively remove the air between the wool fibers.

[0047] (2) Dye liquor preparation: Dissolve the high-temperature-resistant gardenia blue pigment in distilled water, and prepare a high-temperature-resistant gardenia blue dye liquor with a mass concentration of 10 g / L.

[0048] (3) Dyeing process: use 1.5mol / L acetic acid and 1.5mol / L sodium acetate to adjust the pH of the dye solution to 3.1, put the pretreated wool fabric in step (1) into the dye solution, and adjust the concentration owf of the dye solution 5% (owf), liquor ratio 1:100, fully mix the wool fabric with the dy...

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Abstract

Relating to the natural dye dyeing field, the invention discloses a gardenia blue pigment dyeing method for wool fabrics. The invention selects gardenia blue pigment for dyeing, and also provides a non-toxic, low-cost, environment-friendly and high color fastness wool fabric dyeing method. Also, application of the dyeing process cooperatively with the high temperature resistant gardenia blue pigment not only realizes zero adding of dyeing additives and effective environmental protection, but also can effectively improve the dyeing efficiency, and can produce dyeing products with dyeing uniformity and high color fastness, and at the same time, the dyeing time is effectively saved, and the dyeing cost is significantly reduced.

Description

technical field [0001] The invention relates to the field of natural dye dyeing, in particular to a method for dyeing wool fabric with gardenia blue pigment. Background technique [0002] With the increasing development of synthetic dyes, the textile industry overuses synthetic dyes. According to statistics, in recent years, about 1.3 million tons of dyes, pigments and dye precursors are produced and used every year, worth about 23 billion US dollars, most of which are synthetic dyes , its production and processing waste and the discharge of dyeing waste liquid have caused considerable harm to the environment, and some azo synthetic dyes have been found to be biologically toxic and carcinogenic and teratogenic. [0003] Natural dyes are derived from natural resources, exhibit good environmental compatibility and biodegradability, meet the requirements of green chemistry, and are increasingly becoming the research focus of new dye development. [0004] Gardenia blue pigment ...

Claims

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Application Information

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IPC IPC(8): D06P1/34D06P1/00D06P1/653D06P3/14D06P5/02D06P5/20
Inventor 李政刘佳佳徐银莉巩继贤王志芳张健飞
Owner TIANJIN POLYTECHNIC UNIV
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