Cellulose fiber liquid ammonia dyeing method

A technology of cellulose fiber and dyeing method, which is applied in dyeing method, fiber treatment, textiles and papermaking, etc., can solve the problems of no relevant research reports on color fastness, unfavorable dye recycling application, and hydrolysis of reactive dyes, etc. No water dyeing requirements, few dyeing process steps, and the effect of improving exhaustion rate and color fixation rate

Inactive Publication Date: 2013-07-31
WUHAN TEXTILE UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Adding NaOH aqueous solution to liquid ammonia will make the liquid ammonia dyeing technology still unable to get rid of the dependence on water. In addition, after adding NaOH, it may cause hydrolysis problems of reactive dyes in the liquid ammonia-water mixed system, which is not conducive to subsequent dyeing in liquid ammonia. Circular use in ammonia dyeing
For the color fixation pr

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Step (1): Add 15g of 3-chloro-2-hydroxypropyltrimethylammonium chloride and 4.5g of NaOH into 300ml of distilled water, heat to 70°C and immerse in 10g of ramie loose fiber and keep at this temperature 60min. After the ramie loose fiber is taken out after the treatment, add it to 200ml and wash it in 80°C hot water for 5 minutes, then wash it with 200ml of cold water for 5 minutes, then wash it in 200ml of 2g / L HAc aqueous solution for 2 minutes, and finally wash it at 180°C. Bake at ℃ for 3 minutes to obtain cationic ramie loose fibers. (Reference: Lv Lihua, Wu Jian, Ye Fang; Study on Dyeing Properties of Turmeric Dyes Used in Cationic Modified Cellulose Fiber Fabrics; Printing and Dyeing Auxiliaries, 2005, 22(6): 21-24).

[0022] Step (2): Add 0.2g (10%o.m.f) reactive brilliant red X-3B dye to 40ml (bath ratio 1:20) of liquid ammonia, take 2g of cationic ramie powder prepared in step (1) The fibers are immersed in the prepared liquid ammonia dyeing solution and dyed...

Embodiment 2

[0033] Step (1): Add 15g of 3-chloro-2-hydroxypropyltrimethylammonium sulfate, 4.5g of NaOH into 300ml of distilled water, heat to 70°C, immerse in 10g of ramie yarn and keep at this temperature for 60min . After taking out the treated ramie yarn, add it to 200ml and wash it in hot water at 80°C for 5 minutes, then wash it with 200ml cold water for 5 minutes, then wash it in 200ml of 2g / L HAc aqueous solution for 2 minutes, and finally wash it at 180°C. Bake at ℃ for 3 minutes to obtain cationized ramie yarn. (Reference: Lv Lihua, Wu Jian, Ye Fang; Study on Dyeing Properties of Turmeric Dyes Used in Cationic Modified Cellulose Fiber Fabrics; Printing and Dyeing Auxiliaries, 2005, 22(6): 21-24).

[0034] Step (2): Add 1g (50% o.m.f) of reactive brilliant red X-3B dye to 200ml (bath ratio 1:100) of liquid ammonia, and take 2g of cationic ramie yarn prepared in step (1) Immerse in the prepared liquid ammonia dyeing solution and dye for 2 minutes to obtain ramie dyed yarn.

[0...

Embodiment 3

[0045] Step (1): Add 15g of 3-chloro-2-hydroxypropyltrimethylammonium chloride and 4.5g of NaOH into 300ml of distilled water, heat to 70°C and immerse in 10g of ramie woven white cloth and keep the temperature Next 60min. Take out the treated ramie white cloth and add it to 200mL of hot water at 80°C for 5 minutes, then wash with 200mL of cold water for 5 minutes, then wash in 200mL of 2g / L HAc aqueous solution for 2 minutes, and finally wash at 180°C Bake for 3 minutes to obtain cationized ramie cloth. (Reference: Lv Lihua, Wu Jian, Ye Fang; Study on Dyeing Properties of Turmeric Dyes Used in Cationic Modified Cellulose Fiber Fabrics; Printing and Dyeing Auxiliaries, 2005, 22(6): 21-24).

[0046] Step (2): Add 0.4g (20%o.m.f) of reactive brilliant red X-3B dye to 100ml (bath ratio 1:50) of liquid ammonia, and take 2g of the cationic ramie cloth prepared in step (1) Immerse in the prepared liquid ammonia dyeing solution and dye for 1 minute to obtain ramie-colored cloth.

...

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PUM

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Abstract

The invention provides a cellulose fiber liquid ammonia dyeing method, which concretely comprises: adopting a cation modification agent and NaOH to treat cellulose fibers, sequentially carrying out hot water washing, cold water washing and acid washing, carrying out water washing to achieve a neutral state, and drying to obtain cationization cellulose fibers; and dissolving a dye capable of being dissolved in liquid ammonia in liquid ammonia, and immersing the prepared cationization cellulose fibers into the liquid ammonia dyeing solution to dye under a certain condition to obtain the dyed subject, wherein the condition comprises that a dye use amount is more than or equal to 10% (o.m.f), a bath ratio is more than or equal to 1:20, and a dyeing time is more than or equal to 20 seconds. With the present invention, problems of high production process energy consumption and heavy water pollution in the existing cellulose fiber dyeing are solved, a dye uptake rate and a color fixation rate of the dye in liquid ammonia dyeing are increased, a dye use amount is saved, advantages of less dyeing process steps, short dyeing time, recycling of dyed dye, environmental pollution reduction, and the like are provided, and waterless dyeing requirements during a fiber dyeing process can be achieved.

Description

technical field [0001] The invention relates to the technical field of dyeing, in particular to a liquid ammonia dyeing method for cellulose fibers. Background technique [0002] In recent years, the contradictions in the development of my country's textile industry's ecological circular economy have become increasingly prominent, especially the high dependence on water resources and the environmental problems caused by high emissions have seriously restricted the sustainable development of the industry. According to incomplete statistics, the annual water consumption of my country's textile printing and dyeing industry is 1.7 billion tons, and the sewage discharge is as high as 1.6 billion tons. Compared with foreign countries, the water consumption of my country's textile printing and dyeing industry is 2-3 times that of foreign countries, and the energy consumption is 3-5 times that of foreign countries. Because the traditional dyeing method uses water as the medium, was...

Claims

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Application Information

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IPC IPC(8): D06P1/81D06P3/62D06P3/66D06M13/463D06M11/38
Inventor 曾庆福蔡映杰苏工兵王强陈海英彭雄义张平李进
Owner WUHAN TEXTILE UNIV
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