CN107142749B - A method of improving the dyeing utilization rate of reactive dye - Google Patents
A method of improving the dyeing utilization rate of reactive dye Download PDFInfo
- Publication number
- CN107142749B CN107142749B CN201710324378.0A CN201710324378A CN107142749B CN 107142749 B CN107142749 B CN 107142749B CN 201710324378 A CN201710324378 A CN 201710324378A CN 107142749 B CN107142749 B CN 107142749B
- Authority
- CN
- China
- Prior art keywords
- dyeing
- dye
- fabric
- added
- accelerator
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000004043 dyeing Methods 0.000 title claims abstract description 76
- 238000000034 method Methods 0.000 title claims abstract description 51
- 239000000985 reactive dye Substances 0.000 title claims abstract description 46
- 239000000975 dye Substances 0.000 claims abstract description 67
- 239000003607 modifier Substances 0.000 claims abstract description 39
- 239000004744 fabric Substances 0.000 claims abstract description 31
- 230000008569 process Effects 0.000 claims abstract description 22
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 13
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Chemical group [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 claims abstract description 12
- 239000004115 Sodium Silicate Substances 0.000 claims abstract description 6
- 229910000027 potassium carbonate Inorganic materials 0.000 claims abstract description 6
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims abstract description 6
- 229910052911 sodium silicate Inorganic materials 0.000 claims abstract description 6
- 125000002091 cationic group Chemical group 0.000 claims description 42
- 238000005406 washing Methods 0.000 claims description 7
- 238000004321 preservation Methods 0.000 claims description 6
- 238000006386 neutralization reaction Methods 0.000 claims description 5
- 239000004593 Epoxy Substances 0.000 claims description 3
- 238000011534 incubation Methods 0.000 claims description 3
- 238000007599 discharging Methods 0.000 claims description 2
- 150000003242 quaternary ammonium salts Chemical class 0.000 claims description 2
- 150000001768 cations Chemical class 0.000 abstract description 5
- 238000009434 installation Methods 0.000 abstract 1
- 235000019795 sodium metasilicate Nutrition 0.000 abstract 1
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 30
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 27
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 description 25
- 230000000052 comparative effect Effects 0.000 description 23
- 239000000243 solution Substances 0.000 description 19
- 229910000029 sodium carbonate Inorganic materials 0.000 description 15
- 230000004048 modification Effects 0.000 description 13
- 238000012986 modification Methods 0.000 description 13
- 229910052938 sodium sulfate Inorganic materials 0.000 description 13
- 235000011152 sodium sulphate Nutrition 0.000 description 13
- 229920003043 Cellulose fiber Polymers 0.000 description 10
- 235000011121 sodium hydroxide Nutrition 0.000 description 9
- 238000010438 heat treatment Methods 0.000 description 8
- 239000003153 chemical reaction reagent Substances 0.000 description 7
- 239000000835 fiber Substances 0.000 description 7
- 239000000126 substance Substances 0.000 description 6
- 229920000742 Cotton Polymers 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 229920002678 cellulose Polymers 0.000 description 2
- 239000001913 cellulose Substances 0.000 description 2
- 238000010835 comparative analysis Methods 0.000 description 2
- 230000007062 hydrolysis Effects 0.000 description 2
- 238000006460 hydrolysis reaction Methods 0.000 description 2
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 230000003472 neutralizing effect Effects 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- 239000007858 starting material Substances 0.000 description 2
- 239000002351 wastewater Substances 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000000982 direct dye Substances 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 125000001301 ethoxy group Chemical group [H]C([H])([H])C([H])([H])O* 0.000 description 1
- 229910052736 halogen Inorganic materials 0.000 description 1
- 150000002367 halogens Chemical class 0.000 description 1
- 238000005470 impregnation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 125000002924 primary amino group Chemical group [H]N([H])* 0.000 description 1
- 239000012192 staining solution Substances 0.000 description 1
- 239000004753 textile Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
- D06P1/00—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed
- D06P1/38—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed using reactive dyes
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
- D06P1/00—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed
- D06P1/44—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed using insoluble pigments or auxiliary substances, e.g. binders
- D06P1/655—Compounds containing ammonium groups
- D06P1/66—Compounds containing ammonium groups containing quaternary ammonium groups
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
- D06P1/00—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed
- D06P1/44—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed using insoluble pigments or auxiliary substances, e.g. binders
- D06P1/673—Inorganic compounds
- D06P1/67333—Salts or hydroxides
- D06P1/6735—Salts or hydroxides of alkaline or alkaline-earth metals with anions different from those provided for in D06P1/67341
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
- D06P1/00—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed
- D06P1/44—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed using insoluble pigments or auxiliary substances, e.g. binders
- D06P1/673—Inorganic compounds
- D06P1/67383—Inorganic compounds containing silicon
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
- D06P3/00—Special processes of dyeing or printing textiles, or dyeing leather, furs, or solid macromolecular substances in any form, classified according to the material treated
- D06P3/58—Material containing hydroxyl groups
- D06P3/60—Natural or regenerated cellulose
- D06P3/66—Natural or regenerated cellulose using reactive dyes
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Coloring (AREA)
Abstract
The present invention provides a kind of methods of dyeing utilization rate for improving reactive dye.It is dyed method includes the following steps: fabric is placed in dye liquor, after dyeing, does not arrange dye liquor, cation modifier and promotor are added directly into the dye liquor, isothermal holding then is carried out to fabric；After isothermal holding, fabric is post-processed, the fabric after being dyed；Wherein, the promotor is potassium carbonate and/or sodium metasilicate.Technical solution provided by the invention is simple for process, without changing the dyeing installation of traditional activated dyestuff, without carrying out individually cation-modified processing operation to fabric, reduces processing cylinder number, saves water consumption, and significantly improve the utilization rate of reactive dye.
Description
Technical Field
The invention relates to a method for improving the dyeing utilization rate of reactive dyes, and belongs to the technical field of dyeing and finishing.
Background
Cellulosic fibers such as cotton fibers are primarily dyed with reactive dyes and direct dyes. The reactive dye has bright color, complete chromatogram, mature dyeing process and good level-dyeing property, and can form covalent bond combination with most fibers, so the reactive dye has very good color fastness when being taken, and becomes the first choice for dyeing cellulose fibers. However, the reactive dye has the disadvantages of low fixation rate and low utilization rate of the dye during dyeing, particularly when the reactive dye is dyed in deep color (the dye concentration is more than 3% o.w.f.), the fixation rate of the dye is generally about 40-80%, and the higher the dye concentration is, the lower the utilization rate of the dye is, which not only causes the waste of the dye and the increase of the cost, but also causes the difficulty in treating the discharged high-chroma wastewater and is not beneficial to environmental protection.
Cellulose fibers are negatively charged, and reactive dyes are also negatively charged in water, so that salt is usually added for dyeing in order to promote the dyes to be adsorbed to the fibers and react with cellulose hydroxyl groups, but even if a large amount of salt is added, the dye uptake rate is still not ideal.
In order to improve the utilization rate of dye, people have conducted a great deal of research in recent years, wherein one means is to perform cationic modification on fiber, and there are two main types of currently mature pretreatment modification processes using cations:
(1) modifying by an impregnation method, adding a cationic modifier, caustic soda and the fiber to be modified into a cylinder, treating at 70-100 ℃ for more than 30min to enable the cationic modifier to react with the cellulose fiber, washing with water, neutralizing, and dyeing;
(2) cold pad batch modification, namely applying a cationic modifier and caustic soda to a cellulose fabric, then cold pad batch at room temperature for more than 10 hours to enable the cationic modifier to react with the cellulose fiber, and then washing with water, neutralizing and waiting for dyeing.
After the cotton fiber is modified by adopting a cationic reagent, the cotton fiber has electropositivity, and electronegative dye can be adsorbed onto the fiber through coulomb force, so that the dye-uptake rate of the dye is greatly improved, but when the cellulose fiber is modified by adopting the traditional cationic modification process, the cationic modification is required to be independently treated, and the dyeing can be carried out only after the cationic modification treatment is carried out by washing and neutralization; therefore, the defects of more operation steps, complex operation, time and water consumption existing in the existing cation modification treatment are overcome, and the method is not in accordance with the current trend of energy and water conservation in the textile industry.
Therefore, how to simply, rapidly and effectively improve the dyeing utilization rate of the reactive dye becomes a problem to be solved in the field.
Disclosure of Invention
In order to solve the technical problems, the invention aims to provide a method for improving the dyeing utilization rate of reactive dyes, which has simple and easy process, does not need to change the traditional dyeing equipment of the reactive dyes, does not need to carry out separate cation modification treatment operation on fabrics, reduces the number of treatment cylinders, saves the water consumption and improves the utilization rate of the dyes.
In order to achieve the above object, the present invention provides a method for improving dyeing utilization of reactive dyes, comprising the steps of:
placing the fabric in a dye solution for dyeing, directly adding a cationic modifier and an accelerant into the dye solution without discharging the dye solution after dyeing is finished, and then carrying out heat preservation treatment on the fabric;
after the heat preservation treatment is finished, carrying out post-treatment on the fabric to obtain a dyed fabric; wherein,
the promoter is an alkaline substance, and the alkaline substance is potassium carbonate and/or sodium silicate.
According to the technical scheme provided by the invention, after dyeing is finished, the dye liquor is not discharged, the cationic modifier and the accelerant are directly added into the dye liquor for heat preservation treatment, the accelerant can enable the cationic modifier and the fabric to have fixation reaction in the heat preservation process, and the modified fabric further adsorbs the reactive dye which is not dyed in the dye liquor through coulomb force, so that the dye-uptake rate of the dye is improved, and the proportion of the dye which is not utilized in the dye liquor is reduced.
Meanwhile, the invention also researches and discovers that: the alkalinity of the accelerant has important influence on the fixation rate of the cationic modifier and the fabric and the fixation rate of the reactive dye: although the too strong alkalinity can improve the fixation rate of the cationic modifier and the fabric, a large amount of hydrolysis of the reactive dye in the dye liquor can be caused, for example, sodium hydroxide is used as an accelerating agent, although the cationic modifier can obtain a good fixation rate on the fabric, the sodium hydroxide can decompose the reactive dye in the dye liquor in a large amount, and finally the fixation rate of the reactive dye on the fabric is not improved, even the fixation rate of some dyes on the fabric is reduced; if the alkalinity is too weak, the modification effect of the cationic modifier on the fabric is not ideal, so that the utilization rate of the reactive dye is not obviously improved, for example, sodium carbonate is used as an accelerant, which cannot enable the cationic modifier to obtain a good fixation effect on the fabric, so that the utilization rate of the dye cannot be improved. The potassium carbonate and/or sodium silicate provided by the invention is used as an accelerant, the alkalinity of the accelerant is between that of sodium hydroxide and sodium carbonate, and the hydrolysis of the reactive dye can be effectively avoided while the modification effect of the cationic modifier is improved (the fixation reaction between the cationic modifier and the cellulose fiber is promoted).
In the above method, preferably, the dyeing temperature and the incubation temperature are the same.
In the above method, preferably, the cationic modifier is added in a concentration of 10 to 30g/L based on the volume of the dye liquor.
In the above process, the accelerator is preferably added in a concentration of 1 to 20g/L based on the volume of the dye liquor.
In the above method, preferably, the time of the heat-preserving treatment is 10 to 45 min.
In the above method, preferably, when the cationic modifier and the accelerator are added to the dye liquor, the cationic modifier is added first, and then the accelerator is added.
In the above process, the cationic modifier is preferably added to the dye liquor at a constant rate.
In the above process, the accelerator is preferably added to the dye liquor in a rapid first followed by slow manner; more preferably, the accelerator is added to the dye liquor in the manner of a 70% dousing curve.
In the above method, preferably, the post-treatment comprises one or more of water washing, neutralization and soaping.
In the above method, preferably, the fabric is made mainly of cellulose fibers.
In the technical solution provided by the present invention, the dyeing can be performed according to the conventional dyeing process in the art, and is not particularly limited, for example, the fabric can be dyed according to the following process: adding dye, sodium sulfate and sodium carbonate into a water bath, dyeing at 60-80 ℃ to ensure that the reactive dye and the hydroxyl of the cellulose fiber are subjected to covalent bonding fixation reaction. In addition, the cationic modifier may employ products conventional in the art, such as, but not limited to, reactive cationic modifiers having different reactive groups (e.g., epoxy, reactive halogen, ethoxy, or amino); preferably, the cationic modifier comprises an epoxy quaternary ammonium salt modifier; more preferably, the cationic modifier comprises the cationic modifier CR2000 produced by dow chemistry.
The invention has the beneficial effects that:
the technical scheme provided by the invention can enable the cellulose fiber to react with the cationic modifier, so that the modified cellulose fiber can adsorb more dye in the dye liquor to dye the fiber and further react, and the dye-uptake of the dye is further improved compared with that of the conventional dyeing, thereby improving the utilization rate of the dye;
the technical scheme provided by the invention has the advantages of simple and feasible process, no need of changing the traditional dyeing equipment of reactive dyes, no need of carrying out independent cation modification treatment operation on the fabric, reduction of the number of treatment cylinders, water consumption saving, improvement of the utilization rate of the dyes and reduction of the discharge of dyeing wastewater.
Detailed Description
The technical solutions of the present invention will be described in detail below in order to clearly understand the technical features, objects, and advantages of the present invention, but the present invention is not limited to the practical scope of the present invention.
Example 1
The embodiment provides a method for improving the dyeing utilization rate of reactive dyes, which comprises the following steps:
dyeing the pure cotton knitted fabric by using a reactive dye Black B (produced by Taiwan Yongphotochemistry industries, Ltd.) in a dyeing machine, wherein the amount of the reactive dye is 5% (o.w.f); the bath ratio is 1: 8.
under the condition of normal temperature, firstly adding reactive dye into a dyeing machine, then running for 5min, then adding anhydrous sodium sulphate (the concentration of the added anhydrous sodium sulphate is 60g/L according to the volume of the dyeing solution), and controlling the anhydrous sodium sulphate to be added at a constant speed within 10min when the anhydrous sodium sulphate is added; heating the dyeing machine to 60 ℃ at the heating rate of 2 ℃/min, adding sodium carbonate (the concentration of the added sodium carbonate is 20g/L in terms of the volume of the dyeing solution) after the dyeing machine is operated for 20min, finishing the addition within 30min in a manner of adding a 70% posing curve, and preserving heat for 30min after the addition is finished;
finishing adding a cationic modifier CR2000 (produced by Dow chemical) within 10min in a uniform-speed adding manner, wherein the concentration of the added cationic modifier is 20g/L based on the volume of the dye solution;
then adding sodium silicate into the dyeing machine within 20min in an adding mode of a 70% posing curve (in the adding mode, the adding speed is very slow firstly and then gradually becomes fast), wherein the concentration of the added sodium silicate is 10g/L in terms of the volume of the dyeing solution, and preserving heat for 30min after the adding is finished;
and finally, carrying out post-treatment operations such as water washing, neutralization and soaping to obtain a dyed product, wherein the dyed product has uniform color, and in addition, the color fixation rate of the dye is 66.1% by adopting the technical scheme provided by the embodiment.
Comparative example 1
This comparative example provides a dyeing process with reactive dyes.
The comparative example used the same starting materials as in example 1, but the procedure was as follows:
dyeing pure cotton knitted fabric by using a reactive dye Black B in a dyeing machine, wherein the using amount of the reactive dye is 5% (o.w.f); the bath ratio is 1: 8.
under the condition of normal temperature, firstly adding reactive dye into a dyeing machine, then running for 5min, then adding anhydrous sodium sulphate (the concentration of the added anhydrous sodium sulphate is 60g/L according to the volume of the dyeing solution), and controlling the anhydrous sodium sulphate to be added at a constant speed within 10min when the anhydrous sodium sulphate is added; and heating the dyeing machine to 60 ℃ at the heating rate of 2 ℃/min, adding sodium carbonate (the concentration of the added sodium carbonate is 20g/L in terms of the volume of the dyeing solution) after the dyeing machine is operated for 20min, finishing the addition within 30min in a manner of adding a 70% posing curve, and preserving heat for 30min after the addition is finished to obtain a dyeing product.
And (3) comparative analysis: compared with the comparative example 1, the fixation rate of the dye in the example 1 is improved by 6.9 percent, and the dyeing K/S value (tested by a Datacolor testing color matching instrument) is improved by 14 percent.
The dyed product provided in example 1 has a wash fastness (AATCC 135: 2004) of grade 4.5, a perspiration fastness (AATCC15-2007) of grade 4.5, a light fastness (AATCC 125-.
Example 2
The embodiment provides a method for improving the dyeing utilization rate of reactive dyes, which comprises the following steps:
preparing high-temperature (80 ℃ reaction fixation) reactive dye dyeing liquid, wherein the used reactive dyes are EVE REDHE7B H/C (produced by Taiwan Yongoton chemical industry Co., Ltd.) and EVE YELLOW HE4R H/C (produced by Taiwan Yongoton chemical industry Co., Ltd.), and the dosage of the EVE RED HE7B H/C is 4.7% (o.w.f); the amount of EVE YELLOWHE4R H/C was 3.3% (o.w.f); the bath ratio is 1: 8.
under the condition of normal temperature, adding dye into a dyeing machine, running for 5min, then finishing adding anhydrous sodium sulphate (the concentration of the added anhydrous sodium sulphate is 70g/L according to the volume of a dyeing solution) at a constant speed within 10min, then heating the dyeing agent to 80 ℃ at the heating rate of 2 ℃/min, adding sodium carbonate (finishing adding within 45 min) after running for 20min, keeping the concentration of the added sodium carbonate at 30g/L according to the volume of the dyeing solution, and keeping the temperature for 45min after the adding is finished;
finishing adding a cationic modifier CR2000 (produced by the Dow chemical industry) within 10min in a uniform-speed adding manner, wherein the concentration of the added cationic modifier is 30g/L based on the volume of the dye solution;
adding potassium carbonate (the concentration of the added potassium carbonate is 15g/L in terms of the volume of the dye solution) within 30min in an adding mode of a 70% dousing curve, and preserving heat for 45min after the addition is finished;
and finally, carrying out post-treatment operations such as water washing, neutralization and soaping to obtain a dyed product, wherein the dyed product is uniform in color, and in addition, the color fixing rate of the dye EVE RED HE7B H/C is 65.2% and the color fixing rate of the dye EVEYELLOW HE4R H/C is 51.5% by adopting the technical scheme provided by the embodiment.
Comparative example 2
This comparative example provides a dyeing process with reactive dyes.
The comparative example used the same starting materials as in example 2, but the procedure was as follows:
preparing high-temperature (80 ℃ reaction fixation) reactive dye staining solution, wherein the used reactive dyes are EVE REDHE7B H/C and EVE YELLOW HE4R H/C, and the dosage of EVE RED HE7B H/C is 4.7% (o.w.f); the amount of EVEYELLOW HE4R H/C was 3.3% (o.w.f); the bath ratio is 1: 8.
under the condition of normal temperature, adding dye into a dyeing machine, running for 5min, then finishing adding anhydrous sodium sulphate (the concentration of the added anhydrous sodium sulphate is 70g/L according to the volume of the dyeing solution) at a constant speed within 10min, then heating the dyeing agent to 80 ℃ at the heating rate of 2 ℃/min, adding sodium carbonate (finishing adding within 45 min) after running for 20min, keeping the concentration of the added sodium carbonate at 30g/L according to the volume of the dyeing solution, and preserving heat for 45min after adding to obtain a dyeing product.
And (3) comparative analysis: compared with the comparative example 2, the fixation rate of the dye EVE RED HE7B H/C in the example 2 is improved by 10.2 percent, the fixation rate of the dye EVE YELLOW HE4R H/C is improved by 10.5 percent, and the improvement ratios of the fixation rates of the two dyes are basically consistent.
The dyed product provided in example 2 has a wash fastness of grade 4.5, a perspiration fastness of grade 4.0, a light fastness of grade 4.0, a dry crockfastness of grade 4.0, and a wet crockfastness of grade 3.0.
Comparative example 3
This comparative example provides a method for increasing the dyeing utilization of reactive dyes using sodium hydroxide as accelerator.
The reagents and the operation steps adopted by the technical scheme provided by the comparative example are the same as those of the example 1; however, in this comparative example, the reactive dye used was Blue FNR (manufactured by huntsman) in an amount of 4% owf; the accelerator is sodium hydroxide, and the concentration of the added sodium hydroxide is 5g/L based on the volume of the dye solution; the other reagents and amounts added were the same as in example 1. The fixation rate of the product obtained according to the technical scheme provided by the comparative example is only 59%.
The same reactive dye Blue FNR (4% owf) is adopted for conventional dyeing (the reagents and the operation steps adopted in the conventional dyeing process are the same as those in comparative example 1), and the color fixing rate of the obtained dyeing product is 64%.
It can be seen that the fixation rate of the dye on the fabric is not increased or decreased compared to the conventional dyeing process using sodium hydroxide as the accelerator.
Comparative example 4
The comparative example provides a method for improving the dyeing utilization rate of reactive dyes by using sodium carbonate as an accelerator.
The reagents and the operation steps adopted by the technical scheme provided by the comparative example are the same as those of the example 1; however, in this comparative example, the reactive dye used was Blue FNR (manufactured by huntsman) in an amount of 4% owf; the accelerator is sodium carbonate, and the concentration of the added sodium carbonate is 10g/L based on the volume of the dye solution; the other reagents and amounts added were the same as in example 1.
The fixation rate of the product obtained according to the technical scheme provided by the comparative example is only 64 percent, and is basically consistent with that of the product obtained by adopting the same reactive dye (Blue FNR) according to the conventional dyeing process; it can be seen that the fixation of the dye on the fabric is hardly improved with sodium carbonate as accelerator.
Comparative example 5
This comparative example provides a method for increasing the dyeing utilization of reactive dyes.
The reagents and the operation steps adopted by the technical scheme provided by the comparative example are the same as those of the example 1; except that the cationic modifier and accelerator were added during dyeing (i.e., cationic modification and dyeing were performed simultaneously), the remaining procedure was the same as in example 1.
Compared with the technical scheme provided by the embodiment 1, the product obtained according to the technical scheme provided by the comparative example has uneven dyeing and serious dyeing problem; it can be seen that cationic modifiers and accelerators cannot be added during the dyeing process.
The above description is only an exemplary embodiment of the present invention, and is not intended to limit the scope of the present invention. Any equivalent changes and modifications that can be made by one skilled in the art without departing from the spirit and principles of the invention should fall within the protection scope of the invention.
Claims (10)
1. A method for improving the dyeing utilization rate of reactive dyes, comprising the following steps:
placing the fabric in a dye solution for dyeing, directly adding a cationic modifier and an accelerant into the dye solution without discharging the dye solution after dyeing is finished, and then carrying out heat preservation treatment on the fabric; wherein the cationic modifier is CR 2000;
after the heat preservation treatment is finished, carrying out post-treatment on the fabric to obtain a dyed fabric; wherein,
the accelerator is potassium carbonate and/or sodium silicate, and the accelerator is added in a manner of 70% posing.
2. The method of claim 1, wherein the temperature of the dyeing and the temperature of the incubation treatment are the same.
3. The process as claimed in claim 1, wherein the cationic modifier is added in a concentration of 10 to 30g/L based on the volume of the dye liquor.
4. The method of claim 1 or 3, wherein the cationic modifier comprises an epoxy quaternary ammonium salt modifier.
5. The process as claimed in claim 1, wherein the accelerator is added in a concentration of 1 to 20g/L based on the volume of the dye liquor.
6. The method according to claim 1 or 2, wherein the incubation time is 10-45 min.
7. The method of claim 1 wherein the cationic modifier and accelerator are added to the dye liquor first followed by the accelerator.
8. A process as claimed in claim 1 or 7 wherein the cationic modifier is added to the liquor at a uniform rate of addition.
9. A process as claimed in claim 1 or claim 7 wherein the accelerator is added to the dye liquor in a slow first then fast manner.
10. The method of claim 1, wherein the post-treatment comprises one or a combination of water washing, neutralization and soaping.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710324378.0A CN107142749B (en) | 2017-05-10 | 2017-05-10 | A method of improving the dyeing utilization rate of reactive dye |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710324378.0A CN107142749B (en) | 2017-05-10 | 2017-05-10 | A method of improving the dyeing utilization rate of reactive dye |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107142749A CN107142749A (en) | 2017-09-08 |
| CN107142749B true CN107142749B (en) | 2019-04-02 |
Family
ID=59776874
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710324378.0A Active CN107142749B (en) | 2017-05-10 | 2017-05-10 | A method of improving the dyeing utilization rate of reactive dye |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107142749B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110540425B (en) * | 2019-09-06 | 2022-04-26 | 湖南鹏登生物科技股份有限公司 | Coloring agent and accelerator for high-precision dyeing of zirconia ceramic block |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101864676A (en) * | 2010-06-08 | 2010-10-20 | 上海工程技术大学 | Cation modified dyeing method of ceiba fiber textiles |
| CN102535194A (en) * | 2012-02-24 | 2012-07-04 | 台州东海塑料品制造有限公司 | Method of dyeing fabric by using dye |
| CN103898777A (en) * | 2014-04-10 | 2014-07-02 | 广东溢达纺织有限公司 | Method for improving dyeing fixing rate of reactive dye |
-
2017
- 2017-05-10 CN CN201710324378.0A patent/CN107142749B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101864676A (en) * | 2010-06-08 | 2010-10-20 | 上海工程技术大学 | Cation modified dyeing method of ceiba fiber textiles |
| CN102535194A (en) * | 2012-02-24 | 2012-07-04 | 台州东海塑料品制造有限公司 | Method of dyeing fabric by using dye |
| CN103898777A (en) * | 2014-04-10 | 2014-07-02 | 广东溢达纺织有限公司 | Method for improving dyeing fixing rate of reactive dye |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107142749A (en) | 2017-09-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102505475B (en) | Cationization composite modification method of pure cotton fabric | |
| CN103225218A (en) | Cellulose fiber liquid ammonia dyeing method | |
| CN104452352A (en) | Salt-free low-alkali dyeing process for cellulosic fibers | |
| CN104499311A (en) | One-bath one-step dyeing method for dralon/cotton blended fabric | |
| CN104404791A (en) | Differentiation non-salt low-alkaline dyeing technology of cellulose fiber | |
| CN109944093B (en) | Wool etching and dyeing one-bath process for cotton knitted fabric | |
| CN107142749B (en) | A method of improving the dyeing utilization rate of reactive dye | |
| CN109322178A (en) | It is a kind of to wash the/dyeing and finishing processing method of cellulose fibre intertexture jacquard fabric | |
| CN104452357A (en) | Modification process for cellulosic fibers | |
| CN104404793A (en) | Salt-free low-alkaline modifying dyeing method of cellulose fiber | |
| CN104452355A (en) | Cationic modified dyeing process for cellulose fiber | |
| CN104358151A (en) | Cellulose fiber modification method | |
| CN104358159B (en) | A kind of salt-free low alkali circulating dyeing process of cellulose fibre | |
| CN115341396A (en) | Method for improving dyeing rate of cotton fabric reactive dye | |
| CN112301763A (en) | Pure cotton fabric and dyeing method thereof | |
| CN104358153A (en) | Cellulose fiber cationic modification method | |
| CN104358152A (en) | Modified cellulose fibers | |
| CN111287008B (en) | Full-process low-temperature pressurized wool dyeing process | |
| CN113863034A (en) | Method for short-flow pre-treatment dyeing of polyester-cotton knitted fabric | |
| CN107119472A (en) | Pretreating process before yarn dyeing | |
| CN114134729A (en) | High color fastness process for cationic polyester/viscose blended dyed yarn | |
| CN110616575A (en) | Reactive dye for textile and environment-friendly salt-free dyeing process thereof | |
| CN112048926A (en) | Method for circularly dyeing by using dyed wastewater in yarn-dyed field | |
| CN104358161A (en) | Salt-free low-alkali cellulose fiber modified dyeing process | |
| CN104358162A (en) | Cellulose fiber cationic modification method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |