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Dyeing method utilizing natural pigment of cudrania tricuspidata

A technology of natural pigments and wood, applied in the field of natural pigment dyeing, can solve problems such as no reports, and achieve the effects of improving various fastnesses, overcoming fastness defects, and having broad market prospects.

Inactive Publication Date: 2019-03-15
WUHAN TEXTILE UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there is no report on the dyeing of pigments contained in Zhe wood

Method used

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  • Dyeing method utilizing natural pigment of cudrania tricuspidata
  • Dyeing method utilizing natural pigment of cudrania tricuspidata

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] The amount of chitosan is 0.5% of the weight of the cotton fabric, the bath ratio is 1:10, the pH of the chitosan solution is adjusted to 5 with acetic acid solution, and it is put into cotton fabric for treatment, and the solution is gradually heated to 50 at a heating rate of 1 °C / min. ℃, insulation treatment 30min, obtain modified cotton-cotton fabric; Then the modified cotton-cotton fabric is put into the dyeing solution of Zhemu, the weight of the natural pigment of Zhemu in the dyeing solution is 0.2% to cotton fabric, and the liquor ratio during dyeing is 1: 20. The pH of the solution is 7, and the temperature is gradually raised to 60°C at a heating rate of 1°C / min. After heat preservation and dyeing for 30 minutes, it is washed with deionized water and used for later use; the dyed cotton fabric is post-mordant treated with metal ions, and the mordant is sulfuric acid Aluminum potassium, the dosage is 1% of the weight of the cotton fabric, the bath ratio of the p...

Embodiment 2

[0020] The dosage of chitosan is 2% to the weight of cotton fabric, the bath ratio is 1:30, adjust the pH of chitosan solution to 6 with acetic acid solution, put it into cotton fabric for treatment, and gradually heat up the solution to 60°C at a heating rate of 1°C / min. ℃, insulation treatment 40min, obtain modified cotton-cotton fabric; Then the modified cotton-cotton fabric is put into the dyeing solution of Zhemu, the weight of the natural pigment of Zhemu in the dyeing solution is 3% to the cotton fabric, and the liquor ratio during dyeing is 1: 10. The pH of the solution is 9, and the temperature is gradually raised to 70°C at a heating rate of 1°C / min. After heat preservation and dyeing for 50 minutes, it is washed with deionized water for later use; the dyed cotton fabric is post-mordant treated with metal ions, wherein the mordant is sulfuric acid Aluminum potassium, the dosage is 2% of the weight of cotton fabric, the bath ratio of the post-media treatment is 1:30, t...

Embodiment 3

[0022] The amount of chitosan is 4% of the weight of the cotton fabric, the bath ratio is 1:50, the pH of the chitosan solution is adjusted to 4 with acetic acid solution, and it is put into cotton fabric for treatment. ℃, insulation treatment 60min, obtain modified cotton-cotton fabric; Then the modified cotton-cotton fabric is put into the dyeing solution of Zhemu, the weight of the natural pigment of Zhemu in the dyeing solution is 5% to cotton fabric, and the bath ratio during dyeing is 1: 30, the pH of the solution is 5, and the temperature is gradually raised to 80°C at a heating rate of 1°C / min. After heat preservation and dyeing for 60 minutes, it is washed with deionized water for later use; the dyed cotton fabric is post-mordant treated with metal ions, and the mordant is sulfuric acid Aluminum potassium, the dosage is 1% of the weight of the cotton fabric, the bath ratio of post-media treatment is 1:20, the temperature is gradually raised to 60°C at a heating rate of...

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Abstract

The invention relates to a dyeing method utilizing the natural pigment of cudrania tricuspidata, which comprises the following steps: step 1, chitosan solution is adjusted to be weakly acidic, and cotton fabric is put into the chitosan solution for being treated, so as to obtain modified cotton fabric; step 2, the modified cotton fabric is put into cudrania tricuspidata dyeing solution which is then gradually heated up for dyeing the cotton fabric, so as to obtain the dyed cotton fabric; step 3, post-mordanting treatment is carried to the dyed cotton fabric by a mordant, and yellow fabric is obtained after washing, soaping and drying. The invention utilizes the chitosan for modification, thereby being more environmental-friendly than the conventional modifier and obviously improving the dye-uptake of a dye; alums is used for post-mordanting fixation, thereby further improving the fastnesses of the dyed fabric and overcoming the defect of the traditional natural dye in fastness; and conditions such as PH value, temperature, and the like are controlled during the dyeing process, thereby obtaining the most suitable environmental parameters and having broad market prospects.

Description

technical field [0001] The invention relates to the field of natural pigment dyeing methods, in particular to a method for dyeing by utilizing the natural pigment of Zhe wood. Background technique [0002] In the printing and dyeing industry, synthetic dyes account for the vast majority of the share, because synthetic dyes have good color fastness and complete chromatograms. However, during the synthesis process of dyes, some intermediates are often added, and some intermediates will produce deadly dyes in the later stage of use. Allergens and even carcinogens are detrimental to health. Moreover, the environmental pollution problem in the dyeing process has not been solved, so the development of environmentally friendly dyes has become the focus of researchers. Natural pigments are drawn from nature, no synthetic additives are added in the process of extraction and dyeing, it is environmentally friendly and pollution-free, and most of the dyes have certain medicinal value, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06P1/34D06P1/48D06P5/10D06P3/60
CPCD06P1/34D06P1/48D06P3/60D06P5/10
Inventor 姜会钰姜鹏程姚金波胡晓东王志意唐旺唐秀琴
Owner WUHAN TEXTILE UNIV
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