CN103469623A - Method for carrying out salt-free dyeing on un-scoured and unbleached cotton textile by reactive dyes - Google Patents
Method for carrying out salt-free dyeing on un-scoured and unbleached cotton textile by reactive dyes Download PDFInfo
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Abstract
The invention relates to a method for carrying out salt-free dyeing on an un-scoured and unbleached cotton textile by reactive dyes and belongs to the technical field of textile printing, dyeing and finishing. According to the method, the un-scoured and unbleached cotton textile is pre-swelled in a pre-swelling liquid which is formed by mixing a high-proportion alcohol-type organic solvent and a small amount of water, and the pre-swelled cotton textile is dyed by a dyeing liquid which is formed by mixing a high-proportion alcohol-type organic solvent, water and dyes, the wettability and the dyeability of the un-scoured and unbleached cotton textile can be effectively enhanced, and the pre-treating work processes of scouring and bleaching the cotton textile are reduced. The method can effectively enhance the dye-uptake rate, the color fixation rate, the dyeing effect and the color fastness of the reactive dyes onto the un-scoured and unbleached cotton textile, can completely meet production requirements, does not need salt, and is simple in technology, high in feasibility and easy for industrialization; the use amount of water is reduced greatly; besides, the alcohol-type organic solvents can be recycled, so that the method is little in pollution, low in cost, clean, energy-saving, safe and environment-friendly.
Description
Technical field
The present invention relates to a kind of REACTIVE DYES and do not float cotton textiles and carry out the salt-free dyeing method boiling, belong to technical field of textile printing.
Background technology
The material of cotton textiles is comprised of cotton fiber, and these contain the natural impuritys such as pectin, wax without the cotton fiber in the grey cloth of dyeing and finishing processing, and these natural impuritys mainly are present in the cuticula and primary cell wall of cotton fiber.Add finish on fiber and dirt etc.The existence of these impurity, not only make the jaundice of cotton textiles color and luster, and feel is coarse, and water imbibition is very poor.For this reason, before cotton textiles dyeing processing, need it is carried out to kiering and bleaching.
Yet the kiering of traditional cotton textiles and bleaching belong to wet process processing, need heating, use chemical assistant, not only operation is tediously long, and consumes a large amount of water and the energy, and it produces a large amount of waste water, waste gas, contaminated environment.Its waste water neutral and alkali is strong, colourity dark, the COD value is high, once these sewage that contain alkaline matter enter rivers, will be all extremely serious destruction to whole water source and even environment.Moreover, because the water resource of China is very limited, most area all belongs to the even situation of lack of water of few water, so a large amount of waste water resource will jeopardize the sustainable development of China's economy.For this reason, in whole industry, using water wisely and waste water treatment have been the task of top priority at present, and are that China's protection of the environment is badly in need of a great problem solved.
At present, in the printing technology field, along with the continuous enhancing of scientific and technical progress and people's environmental consciousness, the staining technique of some novel environment friendlies is arisen at the historic moment.
Chinese patent application publication No. CN102899929A, on January 30 2013 Shen Qing Publication date, the name of innovation and creation is called a kind of reactive dye salt-free colouring method, and this application case has been announced a kind of method of textiles being carried out to salt-free dyeing.Although the method for utilizing organic solvent to be dyeed to textiles that it adopts, played the salt-free effect that waits environmental protection really, its weak point is that the method needed textiles is boiled and floats pre-treatment before dyeing.
Chinese patent application publication No. CN103243584A, on August 14 2013 Shen Qing Publication date, the name of innovation and creation is called a kind of reactive dye salt-free colouring method, and this application case has been announced a kind of salt-free dyeing method.Although its adopts will be to be dyeed textiles first carry out the preswollen processing of water, and then dye in the pure water dye liquor, finally add the method for organic solvent really can play certain salt-free dyeing effect, but its weak point is that not only technique is comparatively complicated, and poor owing to not boiling the water imbibition of floating cotton textiles, can't not carry out pre-swelling to boiling the cotton textiles that float for water.
Chinese patent application publication No. CN103266507A, on August 28 2013 Shen Qing Publication date, the name of innovation and creation is called a kind of REACTIVE DYES cosolvent decoration method of cellulosic fabric, and this application case discloses a kind of cosolvent decoration method.Although the method that it adopts can play certain even dyeing effect, its weak point is that the method need to add organic solvent in batches, and technique is comparatively complicated.
Summary of the invention
For the problems referred to above, the object of the present invention is to provide a kind of employing pre-swelling solution that alcohol organic solvent and a small amount of water mix at high proportion not float cotton textiles and carry out pre-swelling boiling, and with alcohol organic solvent and water and dyestuff mix at high proportion dye liquor, boiling after swelling treatment in advance do not floated to the method that cotton textiles carry out salt-free dyeing.
To achieve these goals, technical solution of the present invention is:
A kind of REACTIVE DYES does not float to boiling the method that cotton textiles carry out salt-free dyeing, and described colouring method carries out according to the following steps:
A prepares pre-swelling solution:
Bleeding agent, levelling agent are placed in to the mixed solution of alcohol organic solvent and water, be mixed with pre-swelling solution after stirring, wherein, the bath raio of pre-swelling solution is 1:2～1:30, in pre-swelling solution, the volume ratio of alcohol organic solvent and water is 95%:5%～50%:50%, the concentration of bleeding agent is 1～6g/L, and the concentration of levelling agent is 1～6g/L;
B does not boil and floats the pre-swelling treatment of cotton spinning:
To be dyeed not boiling floated to cotton textiles and be placed in the pre-swelling solution through a step preparation, to boiling, do not float cotton textiles and flooded pre-swelling solution and process or pad pre-swelling solution and process, not boiling the liquid carrying rate that floats cotton textiles after pre-swelling treatment is 50%～100%;
C prepares dye liquor:
REACTIVE DYES is placed in to the mixed liquor of alcohol organic solvent and water, stir and be mixed with dye liquor, wherein, the bath raio of dye liquor is 1:5～1:30, in dye liquor, the volume ratio of alcohol organic solvent and water is 95%:5%～90%:10%, and the concentration of REACTIVE DYES is not floated 0.1%～10% of cotton textiles quality for boiling;
E does not boil and floats cotton textiles dyeing:
Will not boiling after the b step process do not float the dye liquor that cotton textiles are placed in the preparation of c step and dye, wherein, dyeing temperature is 30～90 ℃, and dyeing time is 30～60 minutes;
F does not boil and floats the cotton textiles fixation:
The fixation alkaline agent that is 1～100 μ m by diameter adds in dye liquor, to being in not boiling in dye liquor, floating cotton textiles and carries out fixation treatment, and wherein, color fixing temperature is 30～90 ℃, and the fixation time is 30～60 minutes;
The g post processing:
Not boiling after fixation floated to cotton textiles and washed, soap, wash and dry, obtain finished product.
Described alcohol organic solvent is a kind of in ethanol or isopropyl alcohol.
Described not boiling floated cotton textiles and do not floated cotton bulk fibre or do not boil and float sliver or do not boil and float cotton or do not boil and float COTTON FABRIC or do not boil and float a kind of in cotton nonwoven fabrics for boiling.
Described REACTIVE DYES is a kind of in a chloro-s-triazine type REACTIVE DYES or dichloro s-triazine type REACTIVE DYES or vinyl-sulfone reactive dyes or double activated fundamental mode REACTIVE DYES.
Described fixation alkaline agent is a kind of in sodium carbonate or sodium bicarbonate or NaOH or substitute alkali.
Owing to having adopted above technical scheme, technical characterstic of the present invention is: the pre-swelling solution that the present invention adopts alcohol organic solvent at high proportion and a small amount of water to mix does not float cotton textiles and carries out pre-swelling boiling, and with the dye liquor that alcohol organic solvent and water and dyestuff mix at high proportion, boiling after pre-swelling treatment do not floated to the method that cotton textiles are dyeed, because cotton fiber has sandwich construction, from the fiber outer surface to internal layer respectively: epidermis, primary wall, secondary wall and cell.Wherein, primary wall is comprised of cellulose, and it has 30% crystallinity index, is 2.5% of fibre weight; Secondary wall also is comprised of cellulose, and it has 70% crystallization index, is 91.5% of fibre weight, and cell is comprised of plasmic residue; Wherein, the component of non-cellulose nearly all, in epidermal structure, only accounts for the minimum quantity of fibre weight, and these components comprise wax, pectic substance and protein.The most important composition of wax is the mixture of 1-melissyl alcohol, nonacosanol, sitosterol and senior ester class.Not boiling these impurity that the cotton textiles that float contain makes its wettability in normal dyeing technique pure water poor, thereby can't on dye, and boil the cotton textiles that float, alcohol organic solvent is not had to extraordinary absorbability, so, in the pretreatment fluid of alcohol organic solvent at high proportion and a small amount of water, not boiling the cotton textiles that float can effectively be soaked, and this is the prerequisite that can realize dyeing.When after alcohol organic solvent is processed with the pretreatment fluid that water mixes on a small quantity at high proportion, dyestuff is added in pretreatment fluid and forms dye liquor, can effectively economize on resources, and will through pretreated do not boil float cotton textiles and enter dye liquor after, owing to boiling to float, good wettability has not been arranged, so dyestuff can adsorb fully thereon, spread and last set, thereby completes the dyeing of to not boiling, floating cotton textiles.Be insoluble to alcohol organic solvent because dyestuff is water-soluble, so that in dye liquor, the concentration of dyestuff obviously increases, thereby in not boiling the dyeing of floating cotton textiles, without adding any salt analog assistant, thereby realized the salt-free dyeing that floats cotton textiles to not boiling.Therefore, can effectively improve and not boil wettability and the stainability of floating cotton textiles, reduce the pretreatment procedure of cotton textiles kiering and bleaching, solve traditional dyeing technique and can't meet not boiling the problem that cotton textiles are dyeed of floating.
Colouring method of the present invention, not only can effectively improve REACTIVE DYES to not boiling dye-uptake, the degree of fixation that floats cotton textiles and not boiling Color and the COLOR FASTNESS of floating cotton textiles, reduce largely the loss of cotton fiber brute force simultaneously, and dyeing product good level-dyeing property, bright-colored, can meet need of production fully.In whole dyeing, without using salt, dyeing is simple, and feasibility is high, and easily industrialization greatly reduces the consumption of water, and alcohol organic solvent can recycle and reuse, pollutes littlely, and cost is low, clean energy-saving, safety and environmental protection.
The specific embodiment
Below in conjunction with specific embodiment, the present invention is specifically described.
A kind of REACTIVE DYES does not float to boiling the method that cotton textiles carry out salt-free dyeing, described not boiling floated cotton textiles and do not floated cotton bulk fibre or do not boil and float sliver or do not boil and float cotton or do not boil and float COTTON FABRIC or do not boil and float a kind of in cotton nonwoven fabrics for boiling, and the concrete steps of dyeing are as follows:
A prepares pre-swelling solution:
Bleeding agent, levelling agent are placed in to the mixed solution of alcohol organic solvent and water, be mixed with pre-swelling solution after stirring, wherein, the bath raio of pre-swelling solution is 1:2～1:30, in pre-swelling solution, the volume ratio of alcohol organic solvent and water is 95%:5%～50%:50%, the concentration of bleeding agent is 1～6g/L, and the concentration of levelling agent is 1～6g/L, and alcohol organic solvent is a kind of in ethanol or isopropyl alcohol;
B does not boil and floats the pre-swelling treatment of cotton spinning:
To be dyeed not boiling floated to pre-swelling solution that cotton textiles are placed in a step preparation is flooded pre-swelling solution and processes or pad pre-swelling solution and process, not boiling the liquid carrying rate that floats cotton textiles after pre-swelling treatment is 50%～100%, flooding pre-swelling solution processes and refers to and float cotton textiles and impregnated in pre-swelling solution not boiling, then float cotton textiles and carry out centrifuge dripping flooding not boiling after pre-swelling solution, wherein, dipping temperature is 20～60 ℃, dip time is 5～20 minutes, pad when pre-swelling solution is processed and refer to not float cotton textiles and padded pre-swelling solution and process boiling with padding machine, wherein, pad number of times and can be and soak one and roll or two soak two and roll,
C prepares dye liquor:
REACTIVE DYES is placed in to the mixed liquor of alcohol organic solvent and water, stir and be mixed with dye liquor, wherein, the bath raio of dye liquor is 1:5～1:30, in dye liquor, the volume ratio of alcohol organic solvent and water is 95%:5%～90%:10%, the concentration of REACTIVE DYES is not floated 0.1%～10% of cotton textiles quality for boiling, and REACTIVE DYES is a kind of in a chloro-s-triazine type REACTIVE DYES or dichloro s-triazine type REACTIVE DYES or vinyl-sulfone reactive dyes or double activated fundamental mode REACTIVE DYES;
D does not boil and floats cotton textiles dyeing:
Will not boiling after the b step process do not float the dye liquor that cotton textiles are placed in the preparation of c step and dye, wherein, dyeing temperature is 30～90 ℃, and dyeing time is 30～60 minutes;
E does not boil and floats the cotton textiles fixation:
The fixation alkaline agent that is 1～100 μ m by diameter adds in dye liquor, float cotton textiles and carry out fixation treatment being in not boiling in dye liquor, wherein, color fixing temperature is 30～90 ℃, the fixation time is 30～60 minutes, and fixation alkaline agent is a kind of in sodium carbonate or sodium bicarbonate or NaOH or substitute alkali;
The f post processing:
Not boiling after fixation floated to cotton textiles and washed, soap, wash and dry, obtain dyeing product.
Specific embodiment
Embodiment mono-:
By above-mentioned processing step: select 5g not boil and float cotton as treating dyed textiles, bleeding agent, levelling agent are placed in to the mixed solution of second alcohol and water, be mixed with pre-swelling solution after stirring, wherein, the bath raio of pre-swelling solution is 1:30, in pre-swelling solution, the volume ratio of ethanol and water is 50%:50%, and the concentration of bleeding agent is 6g/L, and the concentration of levelling agent is 6g/L.To be dyeed not boiling floated to cotton and be placed in pre-swelling solution and flooded pre-swelling solution and process, not boiling the liquid carrying rate that floats cotton textiles after pre-swelling treatment is 100%.One chloro-s-triazine type REACTIVE DYES is placed in to the mixed liquor of second alcohol and water, stir and be mixed with dye liquor, wherein, the bath raio of dye liquor is 1:30, in dye liquor, the volume ratio of ethanol and water is 95%:5%, and the concentration of a chloro-s-triazine type REACTIVE DYES is not floated 3% of cotton quality for boiling.Not boiling of pre-swelling treatment floated to cotton and be placed in dye liquor and dye, wherein, dyeing temperature is 60 ℃, and dyeing time is 30 minutes.The sodium carbonate that is 50 μ m by diameter adds in dye liquor, to being in not boiling in dye liquor, floating cotton and carries out fixation treatment, and wherein, color fixing temperature is 60 ℃, and the fixation time is 30 minutes.Not boiling after fixation floated to cotton and washed, soap, wash and dry, obtain dyeing product.
The experimental result of the embodiment of the present invention and employing pure water normal dyeing technique is as follows:
| Item compared | Colouring method of the present invention | The normal dyeing method | Item compared | Colouring method of the present invention | The normal dyeing method |
| Dye-uptake (%) | 90.52 | 79.21 | Soaping fastness (level) | 4 | 3-4 |
| Degree of fixation (%) | 80.12 | 61.44 | Dry fastness (level) | 4-5 | 4 |
| The K/S value | 24.861 | 17.703 | Fastness to wet rubbing (level) | 4 | 3 |
From the experimental result correction data, not float cotton textiles and dyeed boiling through the inventive method, its dye-uptake and degree of fixation and COLOR FASTNESS all improve greatly.
Embodiment bis-:
By above-mentioned processing step: select 5g not boil and float COTTON FABRIC as treating dyed textiles, by bleeding agent, levelling agent is placed in the mixed solution of isopropyl alcohol and water, be mixed with pre-swelling solution after stirring, wherein, the bath raio of pre-swelling solution is 1:5, in pre-swelling solution, the volume ratio of isopropyl alcohol and water is 95%:5%, the concentration of bleeding agent is 3g/L, the concentration of levelling agent is 3g/L, to be dyeed not boiling floated to COTTON FABRIC puts in pre-swelling solution and carries out two and soak two and roll pre-swelling solution and process, not boiling the liquid carrying rate that floats COTTON FABRIC after pre-swelling treatment is 50%, dichloro s-triazine type REACTIVE DYES is placed in to the mixed liquor of isopropyl alcohol and water, stir and be mixed with dye liquor, wherein, the bath raio of dye liquor is 1:5, in dye liquor, the volume ratio of alcohol organic solvent and water is 90%:10%, the concentration of REACTIVE DYES is not floated 5% of COTTON FABRIC quality for boiling, will not boiling after pre-swelling treatment not floating COTTON FABRIC is placed in dye liquor and dyes, wherein, dyeing temperature is 30 ℃, dyeing time is 60 minutes.The sodium bicarbonate that is 100 μ m by diameter adds in dye liquor, float COTTON FABRIC and carry out fixation treatment being in not boiling in dye liquor, color fixing temperature is 40 ℃, and the fixation time is 60 minutes, not boiling after fixation floated to COTTON FABRIC and washed, soap, wash and dry, obtain dyeing product.
The experimental result of the embodiment of the present invention and employing pure water normal dyeing technique is as follows:
| Item compared | Colouring method of the present invention | The normal dyeing method | Item compared | Colouring method of the present invention | The normal dyeing method |
| Dye-uptake (%) | 94.43 | 80.27 | Soaping fastness (level) | 4-5 | 3-4 |
| Degree of fixation (%) | 85.54 | 60.22 | Dry fastness (level) | 4-5 | 4 |
| The K/S value | 20.421 | 13.349 | Fastness to wet rubbing (level) | 4 | 3-4 |
From the experimental result correction data, not float cotton textiles and dyeed boiling through the inventive method, its dye-uptake and degree of fixation and COLOR FASTNESS all improve greatly.
Embodiment tri-:
By above-mentioned processing step: select 5g not boil and float sliver as treating dyed textiles, ethanol is mixed with water, be mixed with pre-swelling solution after stirring, wherein, the bath raio of pre-swelling solution is 1:20, and in pre-swelling solution, the volume ratio of ethanol and water is 90%:10%; To be dyeed not boiling floated to sliver and be placed in pre-swelling solution and carry out two and soak two and roll pre-swelling solution and process, not boiling the liquid carrying rate that floats sliver after pre-swelling treatment is 80%; Vinyl-sulfone reactive dyes is placed in to the mixed liquor of second alcohol and water, stirs and be mixed with dye liquor, wherein, the bath raio of dye liquor is 1:20, and in dye liquor, the volume ratio of ethanol and water is 90%:10%; Not boiling after pre-swelling treatment floated to sliver and be placed in dye liquor and dye, wherein, dyeing temperature is 40 ℃, and dyeing time is 30 minutes; The substitute alkali that is 50 μ m by diameter adds in dye liquor, to being in not boiling in dye liquor, floating sliver and carries out fixation treatment, and wherein, color fixing temperature is 60 ℃, and the fixation time is 30 minutes; Not boiling after fixation floated to sliver and washed, soap, wash and dry, obtain dyeing product.
The experimental result of the embodiment of the present invention and employing pure water normal dyeing technique is as follows:
| Item compared | Colouring method of the present invention | The normal dyeing method | Item compared | Colouring method of the present invention | The normal dyeing method |
| Dye-uptake (%) | 93.11 | 81.05 | Soaping fastness (level) | 4-5 | 4 |
| Degree of fixation (%) | 79.34 | 62.46 | Dry fastness (level) | 4-5 | 3-4 |
| The K/S value | 15.014 | 9.443 | Fastness to wet rubbing (level) | 3-4 | 3 |
From the experimental result correction data, not float cotton textiles and dyeed boiling through the inventive method, its dye-uptake and degree of fixation and COLOR FASTNESS all improve greatly.
Claims (5)
1. a REACTIVE DYES does not float to boiling the method that cotton textiles carry out salt-free dyeing, and it is characterized in that: described colouring method carries out according to the following steps:
A prepares pre-swelling solution:
Bleeding agent, levelling agent are placed in to the mixed solution of alcohol organic solvent and water, be mixed with pre-swelling solution after stirring, wherein, the bath raio of pre-swelling solution is 1:2～1:30, in pre-swelling solution, the volume ratio of alcohol organic solvent and water is 95%:5%～50%:50%, the concentration of bleeding agent is 1～6g/L, and the concentration of levelling agent is 1～6g/L;
B does not boil and floats the pre-swelling treatment of cotton spinning:
To be dyeed not boiling floated to cotton textiles and be placed in the pre-swelling solution through a step preparation, to boiling, do not float cotton textiles and flooded pre-swelling solution and process or pad pre-swelling solution and process, not boiling the liquid carrying rate that floats cotton textiles after pre-swelling treatment is 50%～100%;
C prepares dye liquor:
REACTIVE DYES is placed in to the mixed liquor of alcohol organic solvent and water, stir and be mixed with dye liquor, wherein, the bath raio of dye liquor is 1:5～1:30, in dye liquor, the volume ratio of alcohol organic solvent and water is 95%:5%～90%:10%, and the concentration of REACTIVE DYES is not floated 0.1%～10% of cotton textiles quality for boiling;
E does not boil and floats cotton textiles dyeing:
Will not boiling after the b step process do not float the dye liquor that cotton textiles are placed in the preparation of c step and dye, wherein, dyeing temperature is 30～90 ℃, and dyeing time is 30～60 minutes;
F does not boil and floats the cotton textiles fixation:
The fixation alkaline agent that is 1～100 μ m by diameter adds in dye liquor, to being in not boiling in dye liquor, floating cotton textiles and carries out fixation treatment, and wherein, color fixing temperature is 30～90 ℃, and the fixation time is 30～60 minutes;
The g post processing:
Not boiling after fixation floated to cotton textiles and washed, soap, wash and dry, obtain finished product.
2. a kind of REACTIVE DYES as claimed in claim 1 does not float to boiling the method that cotton textiles carry out salt-free dyeing, it is characterized in that: described alcohol organic solvent is a kind of in ethanol or isopropyl alcohol.
3. a kind of REACTIVE DYES as claimed in claim 1 does not float to boiling the method that cotton textiles carry out salt-free dyeing, it is characterized in that: described not boiling floated cotton textiles and do not floated cotton bulk fibre or do not boil and float sliver or do not boil and float cotton or do not boil and float COTTON FABRIC or do not boil and float a kind of in cotton nonwoven fabrics for boiling.
4. a kind of REACTIVE DYES as claimed in claim 1 does not float to boiling the method that cotton textiles carry out salt-free dyeing, it is characterized in that: described REACTIVE DYES is a kind of in a chloro-s-triazine type REACTIVE DYES or dichloro s-triazine type REACTIVE DYES or vinyl-sulfone reactive dyes or double activated fundamental mode REACTIVE DYES.
5. a kind of REACTIVE DYES as claimed in claim 1 does not float to boiling the method that cotton textiles carry out salt-free dyeing, it is characterized in that: described fixation alkaline agent is a kind of in sodium carbonate or sodium bicarbonate or NaOH or substitute alkali.
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