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Method of raising light fastness of natural dye fabric

A technology of natural dyes and fabrics, which is applied in the field of improving the light fastness of natural dye dyed fabrics and textile finishing. It can solve the problems of unsatisfactory application effects, achieve enhanced bonding, good durability, and improve light fastness. Effect

Inactive Publication Date: 2007-10-03
SUZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the above methods can improve the light fastness of dyes to a certain extent, the actual application effect is not very ideal. It has certain applications in improving the light fastness of fabrics dyed with reactive dyes and other synthetic dyes. There are not many applications on fabrics

Method used

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  • Method of raising light fastness of natural dye fabric

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] The modification treatment method adopted in this embodiment is suitable for natural dyed silk fabrics.

[0027] The real silk fabric is dyed by the following method: the dyeing bath is composed of mulberry red pigment 3% (to the weight of the fabric), the pH=3 is adjusted with acetic acid, and the bath ratio is 1:30; the dyeing temperature is 100°C, and the dyeing time is 45min. Wash with water and dry.

[0028] The silk fabric dyed by natural dyes is modified by the following method: the finishing liquid is composed of polymaleic acid dosage 100g / L, sodium hypophosphite 50g / L, fatty alcohol polyoxyethylene ether AE09 1g / L, Adjust the pH value of the finishing solution to 2.5 with 30% sodium hydroxide. Fabric two-dipping and two-padding finishing solution (moisture rate 80%), pre-baked at 80°C for 3 minutes, and baked at 170°C for 2 minutes.

[0029] The fabrics treated by the dyeing process of this embodiment (before modification treatment) and the fabrics after mod...

Embodiment 2

[0031] The modified treatment method adopted in this example is suitable for cotton fabrics dyed with natural dyes.

[0032] Cotton fabric adopts following method to carry out dyeing: dyeing bath is composed of curcumin 5% (weight to fabric), adjusts pH=4 with acetic acid, bath ratio 1: 30; 100 ℃ of dyeing temperatures, dyeing time 45min, the fabric after dyeing is carried out Wash and dry.

[0033] The cotton fabric dyed by natural dyes is modified by the following method: the finishing solution is composed of 80 g / L of citric acid, 30 g / L of sodium phosphite, 0.1 g / L of Pingpingjiao, and oxidized with 30% hydrogen Sodium adjusts the pH of the finishing solution to 2.8. Fabric double dipping and second padding finishing solution (95% liquid rolling rate), pre-baking at 90°C for 3 minutes, and baking at 160°C for 4 minutes.

[0034] The fabrics treated by the dyeing process of this embodiment (before modification treatment) and the fabrics after modification treatment were t...

Embodiment 3

[0036] The modification treatment method adopted in this embodiment is suitable for wool fabrics dyed with natural dyes.

[0037] Wool fabric is dyed by the following method: the dyeing bath consists of 4% cochineal pigment (weight to the fabric), pH=3.5 is adjusted with acetic acid, and the bath ratio is 1:30; the dyeing temperature is 100° C., and the dyeing time is 45 min. The fabric is washed and dried.

[0038] The woolen fabric dyed by natural dyes is modified by the following method: the finishing solution is composed of maleic acid-itaconic acid copolymer dosage 60g / L, sodium oxalate 8g / L, sodium formate 15g / L, penetrant JFC 0.5g / L, adjust the pH value of the finishing solution to 2.5 with 30% sodium hydroxide. Fabric two-dipping and two-padding finishing solution (moisture rate 80%), pre-baked at 100°C for 3 minutes, and baked at 170°C for 2.5 minutes.

[0039] The fabrics treated by the dyeing process of this embodiment (before modification treatment) and the fabri...

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Abstract

The present invention discloses method of raising light fastness of natural dye dyed fabric, and belongs to the field of fabric post-finishing technology. The modifying treatment process of fabric dyed with natural dye includes twice dipping and twice rolling of the dyed fabric inside finishing liquor comprising organic carboxylic acid compound 20-160 g / L, catalyst 5-60 g / L and penetrant 0.5-5 g / L; pre-baking and baking. Thus treated fabric is detected to have 1-2 levels raised light fastness. The method of the present invention can raise the light stability of natural dye, raise the washing fastness of the fabric and raise durability.

Description

technical field [0001] The invention relates to a textile post-finishing technology, in particular to a method for improving the light fastness of fabrics dyed with natural dyes, and belongs to the technical field of textile dyeing and finishing. Background technique [0002] Natural dyes are colored substances (pigments or dyes) extracted from animals or plants. They are extracted from the roots, stems, leaves, flowers, fruits of various plants, and the dried bodies of certain insects and shellfish. any chemical treatment. Natural dyes have good compatibility with the ecological environment, are biodegradable, have low toxicity, and the raw materials used to produce these dyes can be recycled. Since some synthetic dyes have been banned due to their toxicity, carcinogenicity, and pollution problems, there has been an increasing interest in the research and application of natural dyes worldwide in recent years. [0003] Most natural dyes are unstab...

Claims

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Application Information

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IPC IPC(8): D06P5/04D06P3/14D06P3/60D06B3/00
Inventor 王祥荣程万里赵建平徒晓茜
Owner SUZHOU UNIV