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Method for dyeing chitosan fabrics by vegetable dyes

A technology of vegetable dyes and chitosan, which is applied in the field of vegetable dyes and fabrics to achieve the effects of reducing the loss of chitosan, reducing irritation and less content loss

Active Publication Date: 2011-08-31
上海嘉麟杰纺织科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although synthetic dyes are bright and bright, the solemnity and elegance of natural dyes are incomparable to synthetic dyes

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Embodiment 1: 20kg of fabrics containing 9.8% chitosan, 28.4% MODAL, 56.8% combed cotton and 5% spandex are dyed light green. The specific steps of this embodiment include:

[0025] 1) Pretreatment process: Inject 300 liters of industrial soft water into the dyeing machine with a bath ratio of 1:15. First add 450g of scouring agent (DXA-150), 300g of Yuzhongbao C, and 60g of defoamer (DM-83012); then add 450g of sodium hydroxide solution, and the pH value of the liquid in the dyeing machine is 12.5; the chitosan fabric Put it into the dyeing machine for scouring; treat at 90°C for 60 minutes, cool down, drain the liquid in the dyeing machine, and wash with water;

[0026] 2) Dyeing process: inject 300 liters of industrial soft water into the dyeing machine, and the liquor ratio is 1:15. Add 15g of sodium carbonate to adjust the pH value to 7.8. Add 300g of Yuzhongbao C, the softener in the bath, and 240g of the leveling agent Clofis (Shanghai Xingkang Chemical Co., L...

Embodiment 2

[0037] Embodiment 2: the lining that 30kg contains 11% chitosan, 28% Newdal, 56% combed cotton and 5% spandex is dyed brown. The specific process includes:

[0038] 1) Pretreatment process: Inject 600 liters of industrial soft water into the dyeing machine with a bath ratio of 1:20. First add scouring agent (DXA-150) 1200g, Yuzhongbao C 900g, defoamer (DM-83012) 60g, then add sodium hydroxide solution 900g, the pH value of the liquid in the dyeing machine is 12.5, the chitosan fabric Put it into the dyeing machine for scouring, treat it at 95°C for 40 minutes, cool down, drain the liquid in the dyeing machine, and wash with water;

[0039] 2) Dyeing process: inject 600 liters of industrial soft water into the dyeing machine, and the liquor ratio is 1:20. Add 60g of sodium bicarbonate to adjust the pH to 8.0. Add 1200g of Yuzhongbao C, and add the leveling agent Clofis at 1% (owf) of the fabric weight, that is, 300g. After running for 10 minutes, add 690g of gardenia yellow ...

Embodiment 3

[0042] Embodiment 3: the fabric that 20kg contains 10% chitosan, 90% combed cotton is dyed sunset red. The specific process includes:

[0043] 1) Pretreatment process: Inject 360 liters of industrial soft water into the dyeing machine with a bath ratio of 1:18. First add scouring agent (DXA-150) 900g, Yuzhongbao C 540g, defoamer (DM-83012) 36g, then add sodium hydroxide solution 432g, 27% hydrogen peroxide 1080g, the pH value of the liquid in the dyeing machine is 11.8 , Put the chitosan fabric into the dyeing machine for oxygen bleaching, cool down after 60 minutes at 85°C, drain the liquid in the dyeing machine, and wash with water;

[0044] 2) Dyeing process: then inject 360 liters of industrial soft water into the dyeing machine, the bath ratio is 1: 18. 180g sodium bicarbonate, adjust the pH value to 8.5. Add 800g of Yuzhongbao C, and the leveling agent Clofis is 5% (owf) of the fabric weight, that is, 1000g. After running for 10 minutes, add 20g of carmine orange and 2...

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Abstract

The invention discloses a method for dyeing chitosan fabrics by vegetable dyes, which comprises the following steps of: 1) performing a preprocessing process, namely performing dyeing preprocessing on the chitosan fabrics; 2) performing a dyeing process, namely putting the chitosan fabrics subjected to the preprocessing process into a dyeing machine, adding water in a bath ratio of 1:(10-30), adding carbonate and / or hydrocarbonate to regulate the pH value, adding the vegetable dyes, adding anhydrous sulfate, heating to the temperature of between 90 and 110 DEG C, maintaining the temperature for 30 to 60 minutes, discharging dye liquor, washing, and taking the fabrics out of a dye vat; and 3) performing postprocessing process, dehydrating, drying, sizing, and sizing a woollen blanket. The chitosan fabrics are dyed by the dyeing method without using a mordant, so the dyeing method is energy-saving and environment-friendly; and compared with the chitosan fabrics dyed by the other conventional methods, the chitosan content is less in loss, namely the loss is controlled within 15 percent. Simultaneously, the uniformity and stability of dyeing are improved.

Description

technical field [0001] The invention relates to a method for dyeing fabrics with vegetable dyes, in particular to a method for dyeing chitosan fabrics with vegetable dyes. Background technique [0002] Chitosan (polyglucosamine) is the product of deacetylation of chitin. It is a linear polymer compound connected by N-acetyl-D-glucosamine monomers through β-1,4-glucosidic bonds. The only positively charged regenerated fiber with excellent biological activities such as antibacterial, deodorant, moisture absorption, moisturizing and biocompatibility. Chitosan degradation products have no toxic side effects on the human body, no accumulation in the body, and no immunogenicity, so they have very broad prospects in the field of biomedicine. Chitosan fiber has broad-spectrum antibacterial properties, and has excellent antibacterial properties against Escherichia coli, Staphylococcus aureus, and Gram bacteria. Blending chitosan fiber with cotton, viscose, Modal, Newdal, Maser and ...

Claims

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Application Information

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IPC IPC(8): D06P1/34D06P3/02D06P3/85
Inventor 王俊丽许畅黄杨董蓓杨启东黄伟国
Owner 上海嘉麟杰纺织科技有限公司
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