Method of wool surface modification and low temperature dyeing

A low-temperature dyeing and surface modification technology, applied in the field of textile printing and dyeing, can solve the problems that the processing capacity is limited by equipment, the biological enzymes are difficult to work, and the equipment requirements are high, so as to achieve energy saving and emission reduction of wool quality and wear performance, improve wool quality and The effect of wearing performance and improving dyeing performance

Active Publication Date: 2013-03-20
湖南吉祥家纺有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, low-temperature plasma, corona irradiation technology and liquid ammonia treatment have problems such as high equipment requirements, poor compatibility with other technologies, and limited processing capacity by equipment, which restrict their practical application in the dyeing and finishing industry; and biological enzymes Although the treatment technology has the characteristics of mild conditions, high selectivity and green environmental protection, due to the strong hydrophobicity and chemical inertness of the wool scale layer, it is difficult for biological enzymes to act on it, and the wool must be chemically treated

Method used

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  • Method of wool surface modification and low temperature dyeing

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Wool Variety: Pure Wool Loose Fiber.

[0021] Ionic liquid treatment: the ionic liquid is selected from 1-ethyl-3-methylimidazolium bromide ([Emim]Br), the bath ratio is 1:30, the treatment temperature is 80°C, and the treatment time is 20mim. The attached ionic liquid is squeezed into the treated ionic liquid, and the treated fiber is washed with ethanol, finally washed with water, dried at 80°C, and the ethanol washing solution is preserved.

[0022] Acid dye dyeing: the fiber treated with ionic liquid is dyed with acid dye, the acid dye accounts for 1% by weight of the fiber, the sodium sulfate accounts for 10% by weight of the fiber, the bath ratio is 1:40, and the pH value is adjusted to 4.5-5.5, the dyeing temperature is 30°C, the temperature is raised to 60°C at 2°C / min, and the dyeing is kept for 80 minutes. After the dyeing is completed, it is soaped, washed, dehydrated, and dried.

[0023] Regeneration of ionic liquid: add deionized water to the treated ionic...

Embodiment 2

[0026] Wool Variety: Pure Wool Yarn.

[0027] Ionic liquid treatment: the ionic liquid is 1-butyl-3-methylimidazolium chloride ([Bmim]Cl), the liquor ratio is 1:10, the treatment temperature is 80°C, and the treatment time is 5mim. The attached ionic liquid is squeezed into the treated ionic liquid, and the treated fiber is washed with ethanol, finally washed with water, dried at 80°C, and the ethanol washing solution is preserved.

[0028] Acid dye dyeing: the wool yarn treated with ionic liquid is dyed with acid dye, the acid dye accounts for 1% of the fiber weight, the sodium sulfate accounts for 5% of the fiber weight, the bath ratio is 1:20, and the pH is adjusted with acetic acid The value is 4.5-5.5, the dyeing temperature is 40°C, the temperature is raised to 70°C at 2°C / min, and the dyeing is kept for 70 minutes. After the dyeing is completed, it is soaped, washed, dehydrated, and dried.

[0029] Other steps are consistent with embodiment 1.

Embodiment 3

[0031] Wool Variety: Pure wool fabric.

[0032] Ionic liquid treatment: the ionic liquid is 1-butyl-3-methylimidazole acetate ([Bmim]Ac), the bath ratio is 1:20, the treatment temperature is 70°C, and the treatment time is 8mim. After the treatment, the fiber The attached ionic liquid is rolled off into the treated ionic liquid, the treated fiber is washed with ethanol, finally washed with water, dried at 80°C, and the ethanol washing solution is preserved.

[0033] Dyeing with acid dye: dye the pure wool fabric treated with ionic liquid with acid dye, the acid dye accounts for 0.3% by weight of the fiber, the sodium sulfate accounts for 8% by weight of the fiber, the bath ratio is 1:30, and the pH is adjusted with acetic acid The value is 4.5-5.5, the dyeing temperature is 35°C, the temperature is raised to 80°C at 3°C / min, and the dyeing is kept for 60 minutes. After the dyeing is completed, it is soaped, washed, dehydrated, and dried.

[0034] Other steps are consistent wi...

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Abstract

The invention relates to a method of wool surface modification and low temperature dyeing, and the technical scheme is that the method comprises the following steps: treating wool with ionic liquid at 60-80 DEG C for 5-20 minutes with a bath ratio of 1:10-30, squeezing out and recovering the ionic liquid adsorbed by the wool for regeneration and utilization, washing the wool with ethanol, recovering the ionic liquid, rinsing the wool with water and drying; dyeing the treated wool in an acid dye or a reactive dye at 60-80 DEG C for 60-80 minutes, with a bath ratio of 1:20-40, after dyeing, taking the wool out, soaping, washing with water, dewatering and drying. The invention treats wool with ionic liquid; the process is simple; the ionic liquid can be recovered for recycle; the modification process causes no environment pollution; the modified wool has a low dyeing temperature, which is suitable for energy saving; the color yield is high, which improves the utilization rate of the dye; and the lustre sensation and wearability of the wool are improved.

Description

technical field [0001] The invention relates to the technical field of textile printing and dyeing, in particular to a wool surface modification and a low-temperature dyeing method thereof. Background technique [0002] Wool is an important natural fiber. It is widely used in high-grade textile fabrics due to its excellent hygroscopicity, resilience, hand feeling and wearing comfort. However, wool fiber has complex physical and chemical structures, and its surface layer has special properties. The scale layer structure, because the texture of the scale layer is hard, dense, and hydrophobic, is extremely unfavorable to the adsorption and dyeing of dye molecules, and at the same time prevents the dye from diffusing into the fiber. Therefore, wool is generally dyed at a high temperature of 95-100 °C. However, high-temperature dyeing not only consumes a lot of energy, but also increases the cost of dyeing. In addition, under the condition of high-temperature dyeing, the natural ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D06P3/16D06P3/14D06P5/00D06M13/352D06M101/12
Inventor 汪南方翦育林易兵陈建军
Owner 湖南吉祥家纺有限公司
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