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Preparation method of carex meyeriana natural dye and application in dyeing of cotton fabrics

A technology of natural dyes and Ulagrass, which is applied in natural dyes and its application fields, can solve the problems that have not been reported, and achieve the effects of easy operation of the extraction process, safe wearing, and good color fastness

Inactive Publication Date: 2018-12-04
TIANJIN POLYTECHNIC UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, the research on Uralia sativa is limited to fiber health products, and there is no report on the preparation method and application process of Urla sativa natural dyes

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

[0014] The technique that Ulagrass fabric dyestuff in the present embodiment is used for cotton fabric dyeing mainly comprises the following steps:

[0015] Wash and dry the Ulagrass stalks at 80°C for later use, cut them to 50 cm, add deionized water, the ratio of solid to liquid is 1:20, extract at 95°C for 2 hours, filter, concentrate to 1 / 10 of the total filtrate volume to obtain Ulagrass dye solution. Boil the cotton fabric at 80°C for 20 minutes, add 0.2g / L penetrant JFC, and the treated cotton fabric will be dyed.

[0016] Concentrated natural dyes and water are used to prepare Ulagrass dyeing liquor, in which the shrinkage dye accounts for 2 / 3 of the entire dyeing liquor, and the pH value of the dyeing liquor is adjusted to 5; the cotton fabric to be dyed is immersed in the standby dyeing liquor, and the temperature Dyeing at 45°C, heating the water bath to 75°C at a heating rate of 1°C / min, bath ratio 1:40, and dyeing time of 45 minutes; after direct dyeing, wash wit...

Embodiment 2

[0019] The technique that Ulagrass fabric dyestuff in the present embodiment is used for cotton fabric dyeing mainly comprises the following steps:

[0020] Wash and dry the Ulagrass stalks at 90°C for later use, cut them to 50 cm, add deionized water, the ratio of solid to liquid is 1:20, extract at 100°C for 2 hours, filter, concentrate to 1 / 10 of the total filtrate volume to obtain Ulagrass dye solution. Boil the cotton fabric at 95°C for 30 minutes, add 0.3g / L penetrant JFC, and the treated cotton fabric will be dyed.

[0021] Concentrated Ulagrass natural dyes and water are used to prepare Ulagrass dyeing solution, in which the shrinkage dye accounts for 1 / 3 of the entire dyeing solution, and the pH value of the dyeing solution is adjusted to 4; the cotton fabric to be dyed is immersed in the standby dyeing solution, and the temperature For dyeing at 50°C, heat the water bath to 75°C at a heating rate of 1.5°C / min, bath ratio 1:50, and dyeing time of 60 minutes; after di...

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Abstract

The invention provides a preparation method of carex meyeriana natural dye and an application in dyeing of cotton fabrics, and belongs to the fields of natural dye and applications thereof. The preparation method comprises the following steps: washing carex meyeriana straw, performing cutting to 30-50 cm, adding the cut materials into water, wherein a ratio of the material to the water is 1:20 to1:30, performing water boiling for 2-4 h at temperature of 95-100 DEG C to obtain an extract liquid, performing filtration on the extract liquid, and performing concentration to 1 / 10-1 / 6 of a total volume to obtain concentrated carex meyeriana natural dye, using the concentrated carex meyeriana natural dye and deionized water to prepare a carex meyeriana dye liquid, performing dyeing on the cottonfabrics, and performing post mordanting on the dyed fabrics, wherein a mordant is alum. According to the method and application provided by the invention, the extraction process of the carex meyeriana natural dye has no pollution to the environment; the dyed fabrics are safe to wear and have certain antibacterial properties; and the carex meyeriana raw material is abundant and cheap, and the dyeextraction process is simple.

Description

technical field [0001] The invention belongs to the field of natural dyes and applications thereof, and in particular relates to a preparation method of natural dyes from Uralia pratense and its application in cotton fabric dyeing. Background technique [0002] With the improvement of people's living standards and the enhancement of environmental protection awareness, the neglected natural dyes have become a research hotspot again. Natural plant dyes are mostly Chinese herbal medicines, which are extracted from living organisms. They are non-toxic, non-polluting, biodegradable, and have good antibacterial and anti-inflammatory effects, promoting blood circulation and removing blood stasis. In the process of dye processing, it is ecological and environmentally friendly, so it is more and more popular. Modern textiles and clothing can use these medicinal properties of vegetable dyes as natural antibacterial finishing agents to make clothing have the effect of antibacterial an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09B61/00D06P1/34D06P3/60D06M11/57D06M101/06
CPCC09B61/00D06M11/57D06M2101/06D06P1/34D06P3/60
Inventor 王春红龙碧璇王利军
Owner TIANJIN POLYTECHNIC UNIV
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