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Method for increasing dye uptake of cellulosic fiber dyed with natural dyes

A technology of cellulose fibers and natural dyes, applied in the field of natural dye dyeing, can solve environmental pollution and other problems, and achieve the effect of improving the dyeing rate

Active Publication Date: 2019-05-24
山东青枫纺织科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the use of metal ions, such as chromium ions, nickel ions, etc., will cause certain environmental pollution

Method used

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  • Method for increasing dye uptake of cellulosic fiber dyed with natural dyes
  • Method for increasing dye uptake of cellulosic fiber dyed with natural dyes

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] Decamethylcyclopentasiloxane dye liquor dyes cellulose fibers.

[0047] Take 5g of the surfactant AEO-3 and the co-surfactant n-octanol, stir until uniform, and prepare a co-surfactant solution. Take 2.5 g of the prepared auxiliary agent solution, add the decamethylcyclopentasiloxane solution to 100 mL, stir until uniform, and prepare the decamethylcyclopentasiloxane solution containing the auxiliary agent. Take 0.06g (3% o.m.f) of cocoa shell pigment, dissolve them in 1mL (50% o.m.f), 2mL (100% o.m.f), 4mL (200% o.m.f), 6mL (300% o.m.f), 8mL (400% o.m.f) and 10mL (500% o.m.f) water to prepare high-concentration cocoa shell pigment natural dye solutions containing different moisture contents, then add the prepared decamethylcyclopentasiloxane solution containing additives to 40mL, and stir until uniform , complete the preparation of decamethylcyclopentasiloxane dye solutions containing different water contents, and detect their absorbance, that is, the absorbance of th...

Embodiment 2

[0053] Decamethylcyclopentasiloxane dye liquor dyes cellulose fibers.

[0054] Take 5g of the surfactant AEO-3 and the co-surfactant n-octanol, stir until uniform, and prepare a co-surfactant solution. Take 2.5 g of the prepared auxiliary agent solution, add the decamethylcyclopentasiloxane solution to 100 mL, stir until uniform, and prepare the decamethylcyclopentasiloxane solution containing the auxiliary agent. Take 0.06g (3% o.m.f) of cocoa shell pigment and dissolve it in 2mL (100% o.m.f) of water to prepare a high-concentration cocoa shell pigment natural dye solution, then add the prepared decamethylcyclopentadiene containing additives Add the siloxane solution to 40mL, stir until uniform, and complete the preparation of the decamethylcyclopentasiloxane dye solution, and detect its absorbance, that is, the absorbance of the dye solution before dyeing, which is recorded as A0.

[0055] Take 2g of cotton cloth, soak them in 40mL (bath ratio 1:20) of decamethylcyclopentas...

Embodiment 3

[0060] Decamethylcyclopentasiloxane dye liquor dyes cellulose fibers.

[0061] Take 5g of the surfactant AEO-3 and the co-surfactant n-octanol, stir until uniform, and prepare a co-surfactant solution. Take 2.5 g of the prepared auxiliary agent solution, add the decamethylcyclopentasiloxane solution to 100 mL, stir until uniform, and prepare the decamethylcyclopentasiloxane solution containing the auxiliary agent. Take 0.06g (3% o.m.f) of cocoa shell pigment and dissolve it in 2mL (100% o.m.f) of water to prepare a high-concentration cocoa shell pigment natural dye solution, then add the prepared decamethylcyclopentadiene containing additives Add the siloxane solution to 40mL, stir until uniform, and complete the preparation of the decamethylcyclopentasiloxane dye solution, and detect its absorbance, that is, the absorbance of the dye solution before dyeing, which is recorded as A0.

[0062] Take 2g of cotton cloth, dip it into 40mL (bath ratio 1:20) of decamethylcyclopentasi...

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Abstract

The invention discloses a method for increasing the dye uptake of a cellulosic fiber dyed with natural dyes. The method comprises the following steps of 1) preparing a decamethyl pentasiloxane solution containing auxiliaries; 2) preparing a dyeing solution; 3) completing preparation of a decamethyl pentasiloxane dyeing solution; 4) completing dyeing to obtain a dyed product; 5) preparing a dye-fixing solution; 6) completing preparation of a decamethyl pentasiloxane dye-fixing solution; 7) completing dye fixation. The method can effectively increase the uptake of the dyes in the cellulosic fiber dyed with the natural dyes, improve the utilization rate of the dyes and enhance the washable color fastness of the dyed cellulosic fiber; meanwhile, decamethyl pentasiloxane is an environment-friendly solvent and can be recycled. According to the method for increasing the dye uptake of the cellulosic fiber dyed with the natural dyes, applied dyeing and dye-fixing methods are low in water consumption to effectively reduce water consumption during a dyeing process, save resources and cost and increase the value of products.

Description

technical field [0001] The invention relates to the technical field of natural dye dyeing, in particular to a method for improving the dyeing rate of cellulose fibers dyed with natural dyes. Background technique [0002] Natural dyes dyed cellulose fibers generally have problems such as low dye uptake, mainly because natural dyes are difficult to adsorb and fix on cellulose fibers. Therefore, in order to increase the dyeing rate of natural dyes on cellulose fibers, the dyeing technology of pre-media, co-media or post-media can be used to introduce metal ions to improve the dye uptake rate of dyes and the color fastness to washing of dyed products. . Natural dyes are generally difficult to dye cellulose fibers mainly due to their molecular structure. The affinity of natural dyes to cellulose fibers is poor, so that in the dyeing process, the amount of dyes dyed on the fibers is less, and metal ions need to be added for complexation, so that more dyes are dyed on the fibers,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06P1/34D06P1/651D06P3/60D06P5/04
Inventor 蔡映杰吉海东傅深环付连龙吴济宏
Owner 山东青枫纺织科技有限公司
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