CN107794784B - Energy-saving dyeing process for polyester-cotton knitted fabric - Google Patents
Energy-saving dyeing process for polyester-cotton knitted fabric Download PDFInfo
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- 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
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06L—DRY-CLEANING, WASHING OR BLEACHING FIBRES, FILAMENTS, THREADS, YARNS, FABRICS, FEATHERS OR MADE-UP FIBROUS GOODS; BLEACHING LEATHER OR FURS
- D06L1/00—Dry-cleaning or washing fibres, filaments, threads, yarns, fabrics, feathers or made-up fibrous goods
- D06L1/12—Dry-cleaning or washing fibres, filaments, threads, yarns, fabrics, feathers or made-up fibrous goods using aqueous solvents
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06L—DRY-CLEANING, WASHING OR BLEACHING FIBRES, FILAMENTS, THREADS, YARNS, FABRICS, FEATHERS OR MADE-UP FIBROUS GOODS; BLEACHING LEATHER OR FURS
- D06L4/00—Bleaching fibres, filaments, threads, yarns, fabrics, feathers or made-up fibrous goods; Bleaching leather or furs
- D06L4/10—Bleaching fibres, filaments, threads, yarns, fabrics, feathers or made-up fibrous goods; Bleaching leather or furs using agents which develop oxygen
- D06L4/12—Bleaching fibres, filaments, threads, yarns, fabrics, feathers or made-up fibrous goods; Bleaching leather or furs using agents which develop oxygen combined with specific additives
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06L—DRY-CLEANING, WASHING OR BLEACHING FIBRES, FILAMENTS, THREADS, YARNS, FABRICS, FEATHERS OR MADE-UP FIBROUS GOODS; BLEACHING LEATHER OR FURS
- D06L4/00—Bleaching fibres, filaments, threads, yarns, fabrics, feathers or made-up fibrous goods; Bleaching leather or furs
- D06L4/10—Bleaching fibres, filaments, threads, yarns, fabrics, feathers or made-up fibrous goods; Bleaching leather or furs using agents which develop oxygen
- D06L4/13—Bleaching fibres, filaments, threads, yarns, fabrics, feathers or made-up fibrous goods; Bleaching leather or furs using agents which develop oxygen using inorganic agents
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- 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
- D06P1/445—Use of auxiliary substances before, during or after dyeing or printing
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- 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
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- 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
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- 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
- D06P5/00—Other features in dyeing or printing textiles, or dyeing leather, furs, or solid macromolecular substances in any form
- D06P5/02—After-treatment
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Abstract
An energy-saving dyeing process for polyester-cotton knitted fabric includes such steps as pretreating as removing oil from the polyester-cotton knitted fabric before dyeing, (2) dyeing, washing and reducing, washing, dyeing while keeping the bath ratio constant, and directly reducing, dyeing (4) while adding washing liquid to remove the residue attached to the fabric, fixing (5) while adding low-temp scouring agent TF-189 (0.4-0.6 g/L), European blue SUPB L UE (1.2-1.8 g/L), sodium hydroxide (3-4 g/L), hydrogen peroxide (4-6 g/L) and treating at 80-90 deg.C for 35-25 min.
Description
Technical Field
The invention belongs to the field of textile dyeing, and particularly relates to an energy-saving dyeing process for polyester-cotton knitted fabric.
Background
In recent years, the textile dyeing and finishing industry in China develops rapidly, and remarkable achievements are created for the aspects of national economic construction, social progress, export foreign exchange and the like. With the expansion of the industrial development process, the problems of high energy consumption, pollution and environment are receiving social attention. Meanwhile, due to the influence of international environment and climate change, financial and economic situations, the textile dyeing and finishing industry faces severe examination and challenge and encounters unprecedented dilemma.
The discharge amount of wastewater of textile industry in 2015 accounts for 9.22% of the total discharge amount of wastewater of the industrial industry, and the discharge amount of chemical oxygen demand (CODcr) accounts for 7.02% of the total amount of the industrial industry; the printing and dyeing industry is the most main pollution source of the textile industry, is one of the traditional post industries in China, plays a very important role in national economic construction and export earnings all the time, and is a key element for life and death of the next round of printing and dyeing enterprises in the face of new requirements of the "printing and dyeing industry standard condition (2017 edition) of the ministry of industry and trust of the new release and implementation, namely the promotion of the condition of the 2010 edition of the printing and dyeing industry admission standard, less water dyeing, energy consumption reduction, water reuse rate improvement, unified standards of the newly built enterprises, production scale limitation and the like. Therefore, whether new enterprises or existing enterprises are built, the laggard equipment is eliminated uniformly, the dyeing process is improved, and energy conservation and emission reduction are achieved.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides an energy-saving dyeing process of energy-saving and emission-reducing polyester-cotton knitted fabric.
The invention adopts the following technical scheme:
an energy-saving dyeing process of polyester-cotton knitted fabric comprises the following steps:
(1) and pretreatment: before dyeing and washing, carrying out oil removal treatment on the polyester-cotton knitted fabric;
(2) dyeing and washing, reduction and cleaning are combined into one bath: dyeing and washing the degreased polyester-cotton knitted fabric, keeping the bath ratio unchanged, and directly carrying out reduction washing;
(3) and dyeing cotton: dyeing the reduced and cleaned polyester-cotton knitted fabric;
(4) and soaping: placing the dyed polyester-cotton knitted fabric into soap lotion to remove residues attached to the polyester-cotton knitted fabric due to dyeing and cotton dyeing;
(5) and color fixing: and (4) carrying out color fixing treatment on the polyester-cotton knitted fabric after the soaping.
The pretreatment comprises placing the polyester cotton knitted fabric in a treating solution containing 0.4-0.6 g/L low temperature scouring agent TF-189, 1.2-1.8 g/L Euro blue SUPER B L UE, 3-4 g/L sodium hydroxide, and 4-6 g/L hydrogen peroxide, and treating at 80-90 deg.C for 25-35 min.
Further, the dyeing, reduction and cleaning are combined into one bath, namely, the polyester-cotton knitted fabric after oil removal is placed in a treatment solution containing a leveling agent of 0.3-0.7 g/L, a neutralizing acid of 0.3-0.5 g/L and a dyeing dye, treated at the temperature of 130-135 ℃ for 25-35min, then directly added with a reduction cleaning agent ACT of 1.2-1.8 g/L, and cooled to 75-85 ℃ for treatment for 25-35 min.
Further, the leveling agent is AT-2110, and the neutralizing acid is NA.
Furthermore, the bath ratio of the dyeing and washing and the reduction and cleaning combined one bath is 1: 4.
Further, the cotton dyeing comprises the step of placing the polyester-cotton knitted fabric subjected to reduction cleaning in a treatment solution containing 75-85 g/L of anhydrous sodium sulphate, 1.5-2.5 g/L of soda ash, 3-5 g/L of fixation alkali XH-01 and cotton dyeing dye for treatment at the temperature of 55-65 ℃ for 55-65 min.
Further, the treatment process of cotton dyeing comprises the following steps: placing the polyester-cotton knitted fabric subjected to reduction cleaning in a dye vat, adding anhydrous sodium sulphate, adjusting the pH of a treatment solution to be less than or equal to 6.5, adding a cotton dyeing dye, heating to 25-35 ℃, sequentially adding soda and fixing alkali XH-01, finally heating to 55-65 ℃, and keeping the temperature for 55-65 min.
Further, the cotton dyeing dye comprises 0.042% of reactive red 3BS dye, 0.56% of reactive blue B-RV dye and 0.065% of reactive blue BF-RS dye.
Further, the bath ratio of the dyed cotton is 1: 5.
Further, the soaping comprises the step of placing the dyed polyester-cotton knitted fabric in a treatment solution containing 1.8-2.2 g/L of soaping agent AT-1508 and 0.4-0.6 g/L of acetic acid, and treating for 10-20min AT the temperature of 90-100 ℃.
As can be seen from the above description of the present invention, compared with the prior art, the beneficial effects of the present invention are:
in the process flow, a low-alkali assistant, namely the pan SURER B L UE is used in the pretreatment, the high-temperature and high-alkali treatment in the traditional pretreatment is improved, the traditional high temperature of 100 ℃ is reduced to the low temperature of 85 ℃, the prescription is optimized, the PH value of the residual liquid is reduced to about 8, the neutralization hot washing process is reduced, the time consumption, the water consumption, the power consumption, the steam consumption and other indexes of the process are obviously reduced, the pollution to the environment is reduced, the production cost is reduced, and the effects of energy conservation and emission reduction are achieved;
in the dyeing and washing process, the traditional two-bath dyeing and washing and reduction washing is improved to be the combined one-bath dyeing and washing, the new process obviously reduces various indexes such as time consumption, water consumption, power consumption, steam consumption and the like in the process, achieves the effects of energy conservation and emission reduction, reduces the production cost, and simultaneously changes the original cleaning of sodium hydrosulfite into the reduction cleaning of a reducing agent ACT, and reduces the pollution to the environment;
in the process of dyeing cotton, on the premise of ensuring that the cloth cover, color difference, dyeing effect and dyeing color fastness of the new cotton dyeing process can reach the effect of the traditional cotton dyeing process after dyeing cotton, the bath ratio of the dyed cotton is reduced by adjusting the adding sequence of the dye, the anhydrous sodium sulphate, the soda ash and the fixation alkali, so that the time consumption, water consumption, power consumption, steam consumption and other indexes of the process are reduced, the effects of energy conservation and emission reduction are achieved, and the production cost is reduced.
Drawings
FIG. 1 is a flow chart of a conventional pretreatment process;
FIG. 2 is a process diagram of a new pretreatment process;
FIG. 3 is a flow chart of a conventional dyeing and washing process;
FIG. 4 is a flow chart of a new dyeing and washing process;
FIG. 5 is a flow chart of a traditional cotton dyeing process;
FIG. 6 is a new cotton dyeing process flow curve;
FIG. 7 is a flow chart of a traditional post-treatment process for cotton dyeing;
FIG. 8 is a flow chart of a new dyed cotton post-treatment process.
Detailed Description
The invention is further described below by means of specific embodiments.
An energy-saving dyeing process of polyester-cotton knitted fabric comprises the following steps: the method comprises the following steps:
(1) the method comprises the following steps of (1) carrying out oil removal treatment on the polyester-cotton knitted fabric before dyeing and washing, specifically, placing the polyester-cotton knitted fabric in a treatment solution containing 0.4-0.6 g/L of low-temperature scouring agent TF-189, 1.2-1.8 g/L of European blue SUPER B L UE, 3-4 g/L of sodium hydroxide and 4-6 g/L of hydrogen peroxide, and treating for 25-35min at the temperature of 80-90 ℃;
(2) dyeing and washing the degreased polyester-cotton knitted fabric, and then directly carrying out reduction washing while keeping the bath ratio unchanged, specifically, placing the degreased polyester-cotton knitted fabric in a treatment solution containing a leveling agent of 0.3-0.7 g/L, a neutralizing acid of 0.3-0.5 g/L and a dyeing dye, treating AT the temperature of 130-135 ℃ for 25-35min, then directly adding a reducing cleaning agent ACT of 1.2-1.8 g/L, cooling to 75-85 ℃ for treating for 25-35min, further, wherein the leveling agent is a leveling agent AT-2110, the neutralizing acid is a neutralizing acid NA and the dyeing and washing, and the bath ratio of the combined one bath of the reduction washing and the washing is 1: 4;
(3) dyeing cotton, namely dyeing the polyester-cotton knitted fabric after reduction cleaning, specifically, placing the polyester-cotton knitted fabric after reduction cleaning in a treatment solution containing 75-85 g/L sodium sulfate, 1.5-2.5 g/L soda, 3-5 g/L fixation alkali XH-01 and a dyeing dye for treating for 55-65min at the temperature of 55-65 ℃, wherein the adding sequence of the polyester-cotton knitted fabric, an auxiliary agent and the dye comprises the steps of placing the polyester-cotton knitted fabric after reduction cleaning in a dyeing vat, adding the sodium sulfate, adjusting the pH of the treatment solution to be less than or equal to 6.5, adding a dyeing cotton dye, heating to 25-35 ℃, sequentially adding the soda and the fixation alkali XH-01, heating to 55-65 ℃, keeping the temperature for 55-65min, further, wherein the dyeing cotton dye comprises 0.042% of reactive red 3BS dye, 0.56% of reactive blue B-RV dye, 0.065% of reactive blue BF-RS, and the dyeing ratio of the dyeing cotton dye to 1: 5;
(4) the soaping comprises the steps of placing the dyed polyester-cotton knitted fabric into a soaping solution to remove residues attached to the polyester-cotton knitted fabric due to dyeing, particularly, placing the dyed polyester-cotton knitted fabric into a treatment solution containing 1.8-2.2 g/L soaping agent AT-1508 and 0.4-0.6 g/L of acetic acid, and treating for 10-20min AT the temperature of 90-100 ℃;
(5) and color fixing: and (3) carrying out color fixing treatment on the soap-washed polyester-cotton knitted fabric, specifically, placing the soap-washed polyester-cotton knitted fabric in a color fixing solution containing 0.5-0.9% of a color fixing agent DM-2559C, and fixing the color for 15-25min at the temperature of 35-45 ℃.
Example 1
An energy-saving dyeing process of polyester-cotton knitted fabric comprises the following steps: the method comprises the following steps:
(1) the method comprises the following steps of (1) carrying out oil removal treatment on the polyester-cotton knitted fabric before dyeing and washing, specifically, putting the polyester-cotton knitted fabric into a treatment solution containing 0.6 g/L of low-temperature scouring agent TF-189, 1.2 g/L of European blue SUPER B L UE, 4 g/L of sodium hydroxide and 4 g/L of hydrogen peroxide, and treating for 25min at the temperature of 90 ℃;
(2) dyeing and washing, reducing and washing the degreased polyester-cotton knitted fabric, namely dyeing and washing the degreased polyester-cotton knitted fabric, keeping the bath ratio unchanged, and directly reducing and washing, specifically, placing the degreased polyester-cotton knitted fabric in a treatment solution containing a leveling agent AT-2110 of 0.7 g/L, a neutralizing acid NA of 0.3 g/L and a dyeing dye, treating AT the temperature of 130 ℃ for 35min, directly adding a reducing cleaning agent ACT of 1.8 g/L, cooling to 85 ℃ for 25min, and further dyeing, washing, reducing and washing the fabric in one bath AT the bath ratio of 1: 4;
(3) the method comprises the following steps of (1) dyeing cotton, namely dyeing the polyester-cotton knitted fabric after reduction cleaning, specifically, placing the polyester-cotton knitted fabric after reduction cleaning in a treatment solution containing 85 g/L sodium sulfate, 1.5 g/L calcined soda, 5 g/L fixation alkali XH-01 and a dyeing dye at the temperature of 65 ℃ for 55min, wherein the adding sequence of the polyester-cotton knitted fabric, an auxiliary agent and the dye comprises the steps of placing the polyester-cotton knitted fabric after reduction cleaning in a dye vat, adding the sodium sulfate, adjusting the pH of the treatment solution to be less than or equal to 6.5, adding the dyeing dye, heating to 35 ℃, sequentially adding the calcined soda and the fixation alkali XH-01, heating to 65 ℃, keeping the temperature for 55min, and further, wherein the dyeing dye comprises 0.042% of reactive red 3BS dye, 0.56% of reactive blue B-RV dye and 0.065% of reactive blue BF-RS dye, and the bath ratio of the dyeing cotton is 1: 5;
(4) soaping, namely placing the dyed polyester-cotton knitted fabric into a soaping solution to remove residues attached to the polyester-cotton knitted fabric due to dyeing, specifically, placing the dyed polyester-cotton knitted fabric into a treatment solution containing 2.2 g/L soaping agent AT-1508 and 0.4 g/L of acetic acid, and treating for 20min AT the temperature of 90 ℃;
(5) and color fixing: and (3) carrying out color fixing treatment on the polyester-cotton knitted fabric after the soap washing, specifically, placing the polyester-cotton knitted fabric after the soap washing in a color fixing solution containing 0.5% of a color fixing agent DM-2559C, and fixing the color for 15min at the temperature of 45 ℃.
Example 2
An energy-saving dyeing process of polyester-cotton knitted fabric comprises the following steps: the method comprises the following steps:
(1) the method comprises the following steps of (1) carrying out oil removal treatment on the polyester-cotton knitted fabric before dyeing and washing, specifically, putting the polyester-cotton knitted fabric into a treatment solution containing 0.4 g/L of low-temperature scouring agent TF-189, 1.8 g/L of European blue SUPER B L UE, 3 g/L of sodium hydroxide and 6 g/L of hydrogen peroxide, and treating for 35min at the temperature of 80 ℃;
(2) dyeing and washing, reducing and washing the degreased polyester-cotton knitted fabric, namely dyeing and washing the degreased polyester-cotton knitted fabric, keeping the bath ratio unchanged, and directly reducing and washing, specifically, placing the degreased polyester-cotton knitted fabric in a treatment solution containing a leveling agent AT-2110 of 0.3 g/L, a neutralizing acid NA of 0.5 g/L and a dyeing dye, treating AT the temperature of 135 ℃ for 25min, directly adding a reducing cleaning agent ACT of 1.2 g/L, cooling to 75 ℃ for 35min, and further dyeing, washing, reducing and washing the fabric in one bath AT the bath ratio of 1: 4;
(3) the method comprises the following steps of (1) dyeing cotton, namely dyeing the polyester-cotton knitted fabric after reduction cleaning, specifically, placing the polyester-cotton knitted fabric after reduction cleaning in a treatment solution containing 75 g/L sodium sulfate, 2.5 g/L calcined soda, 3 g/L color fixing alkali XH-01 and a dyeing dye at the temperature of 55 ℃ for treatment for 65min, wherein the adding sequence of the polyester-cotton knitted fabric, an auxiliary agent and the dye comprises the steps of placing the polyester-cotton knitted fabric after reduction cleaning in a dye vat, adding the sodium sulfate, adjusting the pH of the treatment solution to be less than or equal to 6.5, adding the dyeing dye, heating to 25 ℃, sequentially adding the calcined soda and the color fixing alkali XH-01, heating to 55 ℃, keeping the temperature for 65min, and further, wherein the dyeing dye comprises 0.042% of reactive red 3BS dye, 0.56% of reactive blue B-RV dye and 0.065% of reactive blue BF-RS dye, and the bath ratio of the dyeing cotton is 1: 5;
(4) soaping, namely placing the dyed polyester-cotton knitted fabric into a soaping solution to remove residues attached to the polyester-cotton knitted fabric due to dyeing, namely placing the dyed polyester-cotton knitted fabric into a treatment solution containing 1.8 g/L soaping agent AT-1508 and 0.6 g/L of acetic acid, and treating for 10min AT the temperature of 100 ℃;
(5) and color fixing: and (3) carrying out color fixing treatment on the soap-washed polyester-cotton knitted fabric, specifically, placing the soap-washed polyester-cotton knitted fabric in a color fixing solution containing 0.9% of a color fixing agent DM-2559C, and fixing the color for 25min at the temperature of 35 ℃.
Example 3
(1) The method comprises the following steps of (1) carrying out oil removal treatment on the polyester-cotton knitted fabric before dyeing and washing, specifically, putting the polyester-cotton knitted fabric into a treatment solution containing 0.5 g/L of low-temperature scouring agent TF-189, 1.5 g/L of European blue SUPER B L UE, 3.5 g/L of sodium hydroxide and 5 g/L of hydrogen peroxide, and treating for 30min at the temperature of 85 ℃;
(2) dyeing and washing, reducing and washing the degreased polyester-cotton knitted fabric, namely dyeing and washing the degreased polyester-cotton knitted fabric, keeping the bath ratio unchanged, and directly reducing and washing, specifically, placing the degreased polyester-cotton knitted fabric in a treatment solution containing a leveling agent AT-2110 of 0.5 g/L, a neutralizing acid NA of 0.4 g/L and a dyeing dye, treating AT the temperature of 133 ℃ for 30min, directly adding a reducing cleaning agent ACT of 1.5 g/L, cooling to 80 ℃ for 30min, and further dyeing, washing, reducing and washing the fabric in one bath AT the bath ratio of 1: 4;
(3) the cotton dyeing method comprises the following steps of (1) dyeing cotton on a polyester-cotton knitted fabric after reduction cleaning, specifically, placing the polyester-cotton knitted fabric after reduction cleaning in a treatment solution containing 80 g/L sodium sulfate, 2 g/L sodium carbonate, 4 g/L fixation alkali XH-01 and a cotton dyeing dye at the temperature of 60 ℃ for treatment for 60min, wherein the adding sequence of the polyester-cotton knitted fabric, an auxiliary agent and the dye comprises the steps of placing the polyester-cotton knitted fabric after reduction cleaning in a dye vat, adding the sodium sulfate, adjusting the pH of the treatment solution to be less than or equal to 6.5, adding the cotton dyeing dye, heating to 30 ℃, sequentially adding the sodium carbonate and the fixation alkali XH-01, heating to 60 ℃, keeping the temperature for 60min, and further, wherein the cotton dyeing dye comprises 0.042% of reactive red 3BS dye, 0.56% of reactive blue B-RV dye and 0.065% of reactive blue BF-RS dye, and the bath ratio of the dyed cotton is 1: 5;
(4) soaping, namely placing the dyed polyester-cotton knitted fabric into a soaping solution to remove residues attached to the polyester-cotton knitted fabric due to dyeing, specifically, placing the dyed polyester-cotton knitted fabric into a treatment solution containing 2 g/L soaping agent AT-1508 and 0.5 g/L of acetic acid, and treating for 15min AT the temperature of 95 ℃;
(5) and color fixing: and (3) carrying out color fixing treatment on the soap-washed polyester-cotton knitted fabric, specifically, placing the soap-washed polyester-cotton knitted fabric in a color fixing solution containing 0.7% of a color fixing agent DM-2559C, and fixing the color at the temperature of 40 ℃ for 20 min.
The adopted Ononian SUPER B L UE is produced by Shanghai Yayun textile chemical industry Co., Ltd, the low-temperature scouring agent TF-189 is produced by Zhejiang heritage chemical industry Co., Ltd, the leveling agent AT-2110, the color fixing agent DM-2559C and the soaping agent AT-1508 are produced by Germany fine chemical industry Co., Ltd, the color fixing base XH-01 is produced by Quanzhou new macro chemical industry Co., Ltd, and the neutralizing acid NA and the reducing cleaning agent are produced by Kokai fine chemical industry (Shanghai) Co., Ltd.
Process test
One-bath process combining traditional pretreatment, dyeing and washing process, new pretreatment, dyeing and washing and reduction cleaning
(I) comparing the process curve of the traditional pretreatment process with the process curve of the new pretreatment process
A, a traditional pretreatment process flow curve is shown in figure 1;
b, a new pretreatment process flow process curve is shown in the attached figure 2;
(II) comparing the traditional dyeing and washing process with the new dyeing and washing process flow process curve
A, a traditional dyeing and washing process flow curve is shown in an attached figure 3;
b, a new dyeing and washing process flow curve is shown in an attached figure 4;
(III) discussing the effects of the traditional dyeing and washing process and the new dyeing and washing process
TABLE 1 comparison of the effects of the conventional dyeing and washing process and the new dyeing and washing process
From table 1, it can be seen that: through research on novel dyeing process technologies such as low-alkali oxygen bleaching process, dyeing and washing reduction combined one-bath process, designed low bath ratio and the like adopted in polyester cotton, the effects of the traditional oxygen bleaching dyeing process can be achieved on cloth surfaces, level dyeing strength, color difference, dyeing effect and floating color, and the effect of the scheme two (two-bath washing) in the table experiment is equivalent to that of the scheme one and is not adopted.
(IV) comparing various indexes of the traditional dyeing and washing process with those of the new dyeing and washing process
TABLE 2 comparison table of indexes of traditional dyeing and washing process and new dyeing and washing process
From table 2, it can be seen that: the research shows that the novel dyeing process technologies such as low-alkali oxygen bleaching process, dyeing-washing reduction-cleaning combined one-bath process, designed low bath ratio and the like adopted in the polyester cotton are lower than the traditional dyeing-washing process in the aspects of process time consumption, process water consumption, process power consumption, process steam consumption and the like, the energy consumption is obviously reduced, and the economic benefit is obviously improved.
Secondly, the traditional cotton dyeing and post-treatment process is compared with the new cotton dyeing and post-treatment process
(I) comparing traditional cotton dyeing process with new cotton dyeing process flow curve
A, a traditional cotton dyeing process flow curve is shown in an attached figure 5;
b, a new cotton dyeing process flow curve is shown in the attached figure 6;
(II) comparing the traditional cotton dyeing post-treatment process with the new cotton dyeing post-treatment process
A, a traditional cotton dyeing post-treatment process flow curve is shown in an attached figure 7;
b, a flow curve of a new dyed cotton post-treatment process is shown in an attached figure 8;
(III) discussing effects of traditional cotton dyeing and cotton dyeing post-treatment process and new cotton dyeing and cotton dyeing post-treatment process
TABLE 3 comparison of the effects of the conventional cotton-dyeing and post-treatment process and the newly dyed and post-treatment processes
From table 3, it can be seen that: the new dyeing process improves the adding sequence of the dye and the dye auxiliary agent, simultaneously reduces the bath ratio of the dyed cotton, ensures that the cloth cover, the color difference, the dyeing effect and the dyeing fastness after dyeing can achieve the effect of the traditional dyeing post-treatment process, saves a large amount of process time, reduces the water consumption, and has the effect equivalent to the effect of the scheme two in the table experiment and is not adopted due to the fact that the effect is equivalent to the effect of the scheme one.
(IV) comparing indexes of the traditional cotton dyeing process and the new cotton dyeing process
TABLE 4 comparison table of indexes of traditional cotton dyeing process and new cotton dyeing process
In summary, the following steps: compared with the traditional dyeing and cotton dyeing post-treatment process, the new dyeing and cotton dyeing post-treatment process greatly shortens the process time by 3.99 hours per ton of cloth; saving water by 111 tons per ton of cloth; the electricity is saved by 159.6 degrees per ton of cloth; saving steam of 1.913 tons per ton of cloth; the comprehensive energy consumption is reduced by 794.87 yuan/ton of cloth; the benefit is obviously improved.
In the process flow, a low-alkali assistant, namely the pan SURER B L UE is used for pretreatment, the traditional pretreatment high-temperature and high-alkali is improved, the traditional high temperature of 100 ℃ is reduced to the low temperature of 85 ℃, the prescription is optimized, the PH value of residual liquid is reduced to about 8, the neutralization hot washing process is reduced, the process time consumption, the water consumption, the power consumption, the steam consumption and other indexes are obviously reduced, the pollution to the environment is reduced, the production cost is reduced, and the effects of energy conservation and emission reduction are achieved;
in the dyeing and washing process, the traditional two-bath dyeing and washing and reduction washing is improved to be the combined one-bath dyeing and washing, the new process obviously reduces various indexes such as time consumption, water consumption, power consumption, steam consumption and the like in the process, achieves the effects of energy conservation and emission reduction, reduces the production cost, and simultaneously changes the original cleaning of sodium hydrosulfite into the reduction cleaning of a reducing agent ACT, and reduces the pollution to the environment;
in the process of dyeing cotton, on the premise of ensuring that the cloth cover, color difference, dyeing effect and dyeing color fastness of the new cotton dyeing process can reach the effect of the traditional cotton dyeing process after dyeing cotton, the bath ratio of the dyed cotton is reduced by adjusting the adding sequence of the dye, the anhydrous sodium sulphate, the soda ash and the fixation alkali, so that the time consumption, water consumption, power consumption, steam consumption and other indexes of the process are reduced, the effects of energy conservation and emission reduction are achieved, and the production cost is reduced.
The above description is only a preferred embodiment of the present invention, and therefore should not be taken as limiting the scope of the invention, which is defined by the appended claims and their equivalents and modifications within the scope of the description.
Claims (3)
1. An energy-saving dyeing process of polyester-cotton knitted fabric is characterized in that: the method comprises the following steps:
(1) and pretreatment: before dyeing and washing, carrying out oil removal treatment on the polyester-cotton knitted fabric;
(2) dyeing and washing, reduction and cleaning are combined into one bath: dyeing and washing the degreased polyester-cotton knitted fabric, keeping the bath ratio unchanged, and directly carrying out reduction washing;
(3) and dyeing cotton: dyeing the reduced and cleaned polyester-cotton knitted fabric;
(4) and soaping: placing the dyed polyester-cotton knitted fabric into soap lotion to remove residues attached to the polyester-cotton knitted fabric due to dyeing and cotton dyeing;
(5) and color fixing: carrying out color fixation treatment on the polyester-cotton knitted fabric after soap washing;
the pretreatment comprises placing the polyester cotton knitted fabric in a treating solution containing 0.5 g/L low temperature scouring agent TF-189, 1.5 g/L Euro blue SUPERB L UE, 3.5 g/L sodium hydroxide, 5 g/L hydrogen peroxide, and treating at 85 deg.C for 30 min;
the dyeing, reducing, cleaning and merging one bath comprises the steps of placing the degreased polyester-cotton knitted fabric in a treatment solution containing a leveling agent of 0.3-0.7 g/L, a neutralizing acid of 0.3-0.5 g/L and a dyeing dye, treating for 25-35min at the temperature of 130-135 ℃, then directly adding a reducing cleaning agent ACT of 1.2-1.8 g/L, and cooling to 75-85 ℃ for treating for 25-35min, wherein the bath ratio of the dyeing, reducing, cleaning and merging one bath is 1: 4;
the cotton dyeing comprises the steps of placing the polyester-cotton knitted fabric subjected to reduction cleaning in a treatment solution containing 75-85 g/L of anhydrous sodium sulphate, 1.5-2.5 g/L of soda ash, 3-5 g/L of fixation alkali XH-01 and cotton dyeing dye, and treating at the temperature of 55-65 ℃ for 55-65 min;
the treatment process of the dyed cotton comprises the following steps: placing the polyester-cotton knitted fabric subjected to reduction cleaning in a dye vat, adding anhydrous sodium sulphate, adjusting the pH of a treatment solution to be less than or equal to 6.5, adding a cotton dyeing dye, heating to 25-35 ℃, sequentially adding soda and fixing alkali XH-01, finally heating to 55-65 ℃, and keeping the temperature for 55-65 min;
the cotton dyeing dye comprises 0.042% of reactive red 3BS dye, 0.56% of reactive blue B-RV dye and 0.065% of reactive blue BF-RS dye;
the bath ratio of the dyed cotton is 1: 5.
2. The energy-saving dyeing process of the polyester-cotton knitted fabric according to claim 1, characterized in that: the leveling agent is AT-2110, and the neutralizing acid is NA.
3. The energy-saving dyeing process of the polyester-cotton knitted fabric according to claim 1, characterized in that the soaping comprises the step of placing the dyed polyester-cotton knitted fabric in a treatment solution containing 1.8-2.2 g/L of soaping agent AT-1508 and 0.4-0.6 g/L of acetic acid, and treating for 10-20min AT the temperature of 90-100 ℃.
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