CN101967761A - Method for decolorizing acid dyeing real silk fabric - Google Patents
Method for decolorizing acid dyeing real silk fabric Download PDFInfo
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- CN101967761A CN101967761A CN 201010299030 CN201010299030A CN101967761A CN 101967761 A CN101967761 A CN 101967761A CN 201010299030 CN201010299030 CN 201010299030 CN 201010299030 A CN201010299030 A CN 201010299030A CN 101967761 A CN101967761 A CN 101967761A
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- real silk
- silk fabric
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- acid dyeing
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Abstract
The invention discloses a method for decolorizing an acid dyeing real silk fabric, and belongs to the field of textile printing and dyeing. The method is characterized in that: the acid dyeing real silk fabric is put into mixed decolorizing solution at the temperature of between 40 and 95 DEG C for treatment for 5 to 45 min, and the color dyed on the acid dyeing real silk fabric is removed. The mixed decolorizing solution is mixed solution which consists of 5 to 40 g/L of NaOH, 1 to 20 g/L of reducers and 2 to 16 ml/L of alkali-resistant nonionic surfactants, or organic solvent mixed solution; and the organic solvent mixed solution consists of C2-C5 amide polar solvents and aqueous solution with a volume ratio of 30-100:70-0. The acid dyeing real silk fabric is decolorized by using the method, and the color decolorization rate can reach 95 to 100 percent. The strength of the real silk fabric is reduced by less than 10 percent, and the quality of the real silk fabric is ensured.
Description
Technical field:
The present invention relates to a kind of discoloration method of acid dyeing real silk fabric, belong to the textile printing and dyeing field.
Background technology:
Along with the raising and the science and technology development of living standards of the people, people are more and more higher to the requirement of garment material quality, particularly export to American-European lining, and are also strict more to the requirement of quality (coloured light, aberration, feel etc.).Cocoon fiber is better than other fibers, and be that mainly it not only has luxurious outward appearance and comfortable wearability, and have good reflecting feel and hygroscopicity, thereby liking of people extremely, more and more higher in consumers in general status in the heart.
But fabric unexpected needs decolouring counterstain may occur in the dyeing process, produces as dyeing product and dyes defect such as color dot, look stain, look flower, and perhaps color is dark excessively, and generally carrying out washing treatment can't reach requirement; Perhaps chromatic light deviation is too big, is difficult to correct; And owing to open the wrong material in fault side, scale, stop off (cut off the water, power failure, equipment fault) etc., when causing the dyeing failure, then must top dyestuff be removed in dyeing processings of decolouring, then go again and redye.
Adopting decolorizer to decolour is into to use a most general technology in the processing of textiles decolouring in the past few years, owing to this method can make dyed textiles effectively decolour, reprocesses in the processing at textiles to have a wide range of applications.But from practical operation, there are many deficiencies in present decoloration process, as irregular, the intensity decreases of back counterstain etc. of decolouring, quality reduces more remarkable when particularly decolouring at the cocoon fiber that is subject to the chemicals influence again, limited the decolouring processed and applied of textiles, and since decolouring can make by the dyeing and weaving deposits yields and crispatura, thereby cause fabric feeling thick and stiff, therefore in actual production process, must take all factors into consideration.
The used dyestuff of silk fabric dyeing has comprised a plurality of kinds such as ACID DYES, direct dyes, REACTIVE DYES, occupies larger proportion but wherein use the real silk fabric that ACID DYES dyes.Therefore, the decolouring of real silk fabric can be used for reference the decolouring mode of cellulose base fiber fabric or protein fibre fabric and be carried out, but in the decolorization, decolorizer to the correlated performance of real silk fabric such as intensity etc. to influence meeting more obvious, improper as treatment process control, can cause fiber degradation serious, reduce the quality of taking of real silk fabric greatly.
At above-mentioned present situation, the present invention is intended to the discoloration method of acid dyeing real silk fabric is studied, thereby obtains decolorizing efficiency preferably, reduces simultaneously the influence of decolouring to the interior qualities such as intensity of real silk fabric etc. to greatest extent.
Summary of the invention:
At the above-mentioned defective that prior art exists, the purpose of this invention is to provide a kind of decolorizing efficiency height, to the discoloration method of the little acid dyeing real silk fabric of real silk fabric quality influence.
It is as follows for realizing the technical scheme that purpose of the present invention takes,
A kind of discoloration method of acid dyeing real silk fabric is characterized in that, the acid dyeing real silk fabric is put into 40 ℃～95 ℃ mixing de-inking solution and is handled 5～45min, removes the color of dying on the acid dyeing real silk fabric.
Among the present invention:
The mixed solution that said mixing de-inking solution is made up of the alkaline-resisting non-ionic surface active agent of the reductant of NaOH, the 1～20g/L of 5～40g/L and 2～16ml/L.
Described reductant is sodium dithionite, rongalite, thiourea dioxide or sodium thiosulfate.
Described alkaline-resisting non-ionic surface active agent is a polyoxyethylene-type, and institute's carbon atom quantity is between the scope of C7～C35 in the structure.
Mixing de-inking solution can also be the organic solvent mixed solution, is made up of the amide-type polar solvent and the aqueous solution of C2～C5 in the organic solvent mixed solution, and the amide-type polar solvent is 30～100: 70～0 with the ratio of the volume of the aqueous solution.
Beneficial effect of the present invention is as follows;
The decolouring technology of a kind of acid dyeing real silk fabric provided by the invention is selected for use by non-ionic surface active agent and decoloration process condition, can carry out gentleness, efficient decolorizing for the real silk fabric of acid dyeing, 1, carry out the decolouring of acid dyeing real silk fabric with the present invention, the color percent of decolourization can reach 95～100%.2, carry out the decolouring of acid dyeing real silk fabric with the present invention, the intensity of real silk fabric reduces less than 10%, for the not significantly influence of quality of real silk fabric.
The invention will be further described below in conjunction with the specific embodiment.
The specific embodiment
Embodiment 1,
1.0g dyeing of real silk fabric is put into the mixed solution of being made up of the reductant of 15g/L NaOH and 2g/L, in the solution not with non-ionic surface active agent.Put it into then in the electric-heated thermostatic water bath of 80 ℃ of temperature and handle 8min, take out fabric and clean and dry.The percent of decolourization of real silk fabric is 95.5% after the test processes, and the intensity of real silk fabric reduces by 75.6%.
Embodiment 2,
1.0g dyeing of real silk fabric is put into the mixed solution of being made up of the reductant of 15g/L NaOH and 2g/L, in the solution not with non-ionic surface active agent.Put it into then in the electric-heated thermostatic water bath of 90 ℃ of temperature and handle 8min, take out fabric and clean and dry.The percent of decolourization of real silk fabric is 95.1% after the test processes, and the intensity of real silk fabric reduces by 74.9%.
Embodiment 3,
1.0g dyeing of real silk fabric is put into the mixed solution of being made up of the reductant of 15g/L NaOH and 2g/L, add the 2g/L non-ionic surface active agent in the solution.Put it into then in the electric-heated thermostatic water bath of 80 ℃ of temperature and handle 8min, take out fabric and clean and dry.The percent of decolourization of real silk fabric is 99.6% after the test processes, and the intensity of real silk fabric reduces by 7.3%.
Embodiment 4,
Treatment conditions are with embodiment 3, and difference is: add the 10g/L non-ionic surface active agent in the solution, the percent of decolourization of handling back test real silk fabric is 99.8%, and the intensity of real silk fabric reduces by 9.7%.
Embodiment 5,
Is that the organic solvent mixed solution 50ml that is mixed with at 50: 50 puts into the 100ml beaker with the amide-type polar solvent of C2～C5 and the aqueous solution according to the ratio of volume, put into electric-heated thermostatic water bath then and be heated to 95 ℃ of temperature, get 1.0g dyeing of real silk fabric and put into solution, take out the fabric cleaning behind the processing 3min and dry.The percent of decolourization of real silk fabric is 98.0% after the test processes, and the intensity of real silk fabric reduces by 8.7%.
Embodiment 6,
Is that the organic solvent mixed solution 50ml that is mixed with at 70: 30 puts into the 100ml beaker with the amide-type polar solvent of C2～C5 and the aqueous solution according to the ratio of volume, put into electric-heated thermostatic water bath then and be heated to 95 ℃ of temperature, get 1.0g dyeing of real silk fabric and put into solution, take out the fabric cleaning behind the processing 9min and dry.The percent of decolourization of real silk fabric is 99.9% after the test processes, and the intensity of real silk fabric reduces by 9.6%.
Claims (10)
1. the discoloration method of an acid dyeing real silk fabric is characterized in that, the acid dyeing real silk fabric is put into 40 ℃～95 ℃ mixing de-inking solution and is handled 5～45min, removes the color of dying on the acid dyeing real silk fabric; Described mixing de-inking solution contains the mixed solution that the reductant of NaOH, the 1～20g/L of 5～40g/L is formed.
2. the discoloration method of a kind of acid dyeing real silk fabric according to claim 1 is characterized in that: described mixed solution also includes the alkaline-resisting non-ionic surface active agent of 2～16ml/L.
3. the discoloration method of a kind of acid dyeing real silk fabric according to claim 1, it is characterized in that: 1.0g dyeing of real silk fabric is put into the mixed solution of being made up of the reductant of 15g/L NaOH and 2g/L, put it into then in the electric-heated thermostatic water bath of 80 ℃ of temperature and handle 8min, take out fabric and clean and dry; The percent of decolourization of real silk fabric is 95.5% after the test processes, and the intensity of real silk fabric reduces by 75.6%.
4. the discoloration method of a kind of acid dyeing real silk fabric according to claim 2, it is characterized in that: 1.0g dyeing of real silk fabric is put into the mixed solution of forming by the alkaline-resisting non-ionic surface active agent of reductant, 2g/L of 15g/L NaOH and 2g/L, put it into then in the electric-heated thermostatic water bath of 80 ℃ of temperature and handle 8min, take out fabric and clean and dry; The percent of decolourization of real silk fabric is 99.6% after the test processes, and the intensity of real silk fabric reduces by 7.3%.
5. the discoloration method of a kind of acid dyeing real silk fabric according to claim 2, it is characterized in that: 1.0g dyeing of real silk fabric is put into the mixed solution of forming by the alkaline-resisting non-ionic surface active agent of reductant, 10g/L of 15g/L NaOH and 2g/L, put it into then in the electric-heated thermostatic water bath of 80 ℃ of temperature and handle 8min, take out fabric and clean and dry; The percent of decolourization of real silk fabric is 99.8% after the test processes, and the intensity of real silk fabric reduces by 9.7%.
6. according to the discoloration method of the described a kind of acid dyeing real silk fabric of claim 1～5, it is characterized in that: described reductant is sodium dithionite, rongalite, thiourea dioxide or sodium thiosulfate.
7. according to the discoloration method of claim 2 or 4 or 5 described a kind of acid dyeing real silk fabrics, it is characterized in that: described alkaline-resisting non-ionic surface active agent is a polyoxyethylene-type, and institute's carbon atom quantity is between the scope of C7～C35 in the structure.
8. the discoloration method of an acid dyeing real silk fabric is characterized in that, the acid dyeing real silk fabric is put into 40 ℃～95 ℃ mixing de-inking solution and is handled 5～45min, removes the color of dying on the acid dyeing real silk fabric; Described mixing de-inking solution is the organic solvent mixed solution, is made up of the amide-type polar solvent and the aqueous solution of C2～C5 in the organic solvent mixed solution, and the amide-type polar solvent is 30～100: 70～0 with the ratio of the volume of the aqueous solution.
9. the discoloration method of a kind of acid dyeing real silk fabric according to claim 8, it is characterized in that: is that the organic solvent mixed solution 50ml that is mixed with at 50: 50 puts into the 100ml beaker with the amide-type polar solvent of C2～C5 and the aqueous solution according to the ratio of volume, put into electric-heated thermostatic water bath then and be heated to 95 ℃ of temperature, get 1.0g dyeing of real silk fabric and put into solution, take out the fabric cleaning behind the processing 3min and dry; The percent of decolourization of real silk fabric is 98.0% after the test processes, and the intensity of real silk fabric reduces by 8.7%.
10. the discoloration method of a kind of acid dyeing real silk fabric according to claim 8, it is characterized in that: is that the organic solvent mixed solution 50ml that is mixed with at 70: 30 puts into the 100ml beaker with the amide-type polar solvent of C2～C5 and the aqueous solution according to the ratio of volume, put into electric-heated thermostatic water bath then and be heated to 95 ℃ of temperature, get 1.0g dyeing of real silk fabric and put into solution, take out the fabric cleaning behind the processing 9min and dry; The percent of decolourization of real silk fabric is 99.9% after the test processes, and the intensity of real silk fabric reduces by 9.6%.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010102990309A CN101967761B (en) | 2010-09-28 | 2010-09-28 | Method for decolorizing acid dyeing real silk fabric |
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| CN2010102990309A CN101967761B (en) | 2010-09-28 | 2010-09-28 | Method for decolorizing acid dyeing real silk fabric |
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| CN101967761A true CN101967761A (en) | 2011-02-09 |
| CN101967761B CN101967761B (en) | 2012-05-09 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017053264A1 (en) * | 2015-09-24 | 2017-03-30 | North Carolina State University | Method for decolorizing textile materials |
| US11001961B2 (en) | 2015-08-21 | 2021-05-11 | North Carolina State University | Oxidative method for decolorizing textile materials |
| CN114703527A (en) * | 2022-03-11 | 2022-07-05 | 广东长盈精密技术有限公司 | Anodic oxidation dyeing process |
| TWI809650B (en) * | 2022-01-07 | 2023-07-21 | 遠東新世紀股份有限公司 | Decolorization method of polymer material colored by coloring agent, decolorization treatment liquid and production method of regenerated polymer |
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| CN101492889A (en) * | 2009-02-24 | 2009-07-29 | 天津工业大学 | Dyeing defect renovation agent and method for preparing the same |
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2010
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| US6217621B1 (en) * | 1999-07-09 | 2001-04-17 | Morton International Inc. | Textile substrate dye stripping |
| CN1730800A (en) * | 2005-08-16 | 2006-02-08 | 浙江理工大学 | Dyeing defect positioning and stripping method for real silk fabric |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11001961B2 (en) | 2015-08-21 | 2021-05-11 | North Carolina State University | Oxidative method for decolorizing textile materials |
| WO2017053264A1 (en) * | 2015-09-24 | 2017-03-30 | North Carolina State University | Method for decolorizing textile materials |
| CN108138436A (en) * | 2015-09-24 | 2018-06-08 | 北卡罗来纳州立大学 | For the method that textile material is caused to decolourize |
| CN108138436B (en) * | 2015-09-24 | 2020-05-05 | 北卡罗来纳州立大学 | Method for decolorizing textile materials |
| US10640914B2 (en) | 2015-09-24 | 2020-05-05 | North Carolina State University | Method for decolorizing textile materials |
| TWI809650B (en) * | 2022-01-07 | 2023-07-21 | 遠東新世紀股份有限公司 | Decolorization method of polymer material colored by coloring agent, decolorization treatment liquid and production method of regenerated polymer |
| CN114703527A (en) * | 2022-03-11 | 2022-07-05 | 广东长盈精密技术有限公司 | Anodic oxidation dyeing process |
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| CN101967761B (en) | 2012-05-09 |
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