CN111593584A - Dyeing and finishing processing technology of cyclic renewable polyester fabric - Google Patents
Dyeing and finishing processing technology of cyclic renewable polyester fabric Download PDFInfo
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- CN111593584A CN111593584A CN202010610491.7A CN202010610491A CN111593584A CN 111593584 A CN111593584 A CN 111593584A CN 202010610491 A CN202010610491 A CN 202010610491A CN 111593584 A CN111593584 A CN 111593584A
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- 238000011282 treatment Methods 0.000 claims abstract description 21
- 238000007730 finishing process Methods 0.000 claims abstract description 17
- 239000012752 auxiliary agent Substances 0.000 claims abstract description 16
- 239000011347 resin Substances 0.000 claims abstract description 15
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- 239000000986 disperse dye Substances 0.000 claims abstract description 10
- 229940050906 magnesium chloride hexahydrate Drugs 0.000 claims abstract description 5
- DHRRIBDTHFBPNG-UHFFFAOYSA-L magnesium dichloride hexahydrate Chemical compound O.O.O.O.O.O.[Mg+2].[Cl-].[Cl-] DHRRIBDTHFBPNG-UHFFFAOYSA-L 0.000 claims abstract description 5
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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
- D06P1/16—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 dispersed, e.g. acetate, dyestuffs
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M11/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising
- D06M11/32—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with oxygen, ozone, ozonides, oxides, hydroxides or percompounds; Salts derived from anions with an amphoteric element-oxygen bond
- D06M11/36—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with oxygen, ozone, ozonides, oxides, hydroxides or percompounds; Salts derived from anions with an amphoteric element-oxygen bond with oxides, hydroxides or mixed oxides; with salts derived from anions with an amphoteric element-oxygen bond
- D06M11/38—Oxides or hydroxides of elements of Groups 1 or 11 of the Periodic Table
-
- 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
- D06P1/0032—Determining dye recipes and dyeing parameters; Colour matching or monitoring
-
- 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
- D06P3/34—Material containing ester groups
- D06P3/52—Polyesters
- D06P3/54—Polyesters using dispersed dyestuffs
-
- 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
- D06P5/00—Other features in dyeing or printing textiles, or dyeing leather, furs, or solid macromolecular substances in any form
- D06P5/02—After-treatment
- D06P5/04—After-treatment with organic compounds
- D06P5/08—After-treatment with organic compounds macromolecular
-
- 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
- D06P5/00—Other features in dyeing or printing textiles, or dyeing leather, furs, or solid macromolecular substances in any form
- D06P5/02—After-treatment
- D06P5/10—After-treatment with compounds containing metal
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M2101/00—Chemical constitution of the fibres, threads, yarns, fabrics or fibrous goods made from such materials, to be treated
- D06M2101/16—Synthetic fibres, other than mineral fibres
- D06M2101/30—Synthetic polymers consisting of macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- D06M2101/32—Polyesters
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M2200/00—Functionality of the treatment composition and/or properties imparted to the textile material
- D06M2200/50—Modified hand or grip properties; Softening compositions
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Dispersion Chemistry (AREA)
- Coloring (AREA)
Abstract
The invention discloses a dyeing and finishing processing technology of a circulating renewable polyester fabric, which comprises an alkali decrement technology, a dyeing technology and a dyeing after-finishing technology which are sequentially carried out; the alkali deweighting process adopts an alkali deweighting auxiliary agent to carry out alkali deweighting treatment on the regenerated polyester fabric; the dyeing agent adopted by the dyeing process consists of a dyeing auxiliary agent and a dye, wherein the dye is a disperse dye, the dyeing temperature is increased to 120-130 ℃, and the dyeing heat preservation time is 55-60 min; in the dyeing post-finishing process, a dyeing finishing agent is adopted to carry out padding treatment on the dyed regenerated polyester fabric; the dyeing finishing agent comprises 15-25 g/L of low-refractive-index resin emulsion finishing agent, 0-10 g/L of 2D resin, 1-2 g/L of penetrating agent and 0-5 g/L of magnesium chloride hexahydrate. According to the characteristics of the fabric, the proper pre-dyeing treatment, dyeing process and post-dyeing finishing process are formulated, so that the dyeing depth, color fastness and dyeing and darkening effects are improved, and the high tearing strength and breaking strength of the fabric are ensured.
Description
Technical Field
The invention belongs to the technical field of textile printing and dyeing, and particularly relates to a dyeing and finishing processing technology of a circulating renewable polyester fabric.
Background
According to the statistical data of the China chemical fiber industry Association, the yield of the polyester filament and the polyester staple fiber in China in 2018 is 4014.87 ten thousand tons, and the yield accounts for about 80.11% of all chemical fibers. The polyester fiber has good physical and chemical properties such as high strength, high rigidity, heat resistance, chemical resistance and the like, and is widely applied to the fields of clothing, shoes and hats, medical treatment, buildings, national defense and the like.
However, the environmental pollution problem caused by polyester waste and waste clothes is getting more and more serious. The quantity of waste textiles in China exceeds 2000 million tons every year, but the recovery rate is less than 10 percent, and the storage quantity of waste polyester is more than 1 hundred million tons. The international recovery agency (BIR) and related researches show that the using amount of 3kg of petroleum can be reduced, the discharge amount of 3.6kg of carbon dioxide can be reduced, 6000L of water can be saved, and the using amount of 0.3kg of chemical fertilizer and 0.2kg of pesticide can be reduced when 1kg of waste textile is used. Therefore, the waste polyester recovery and reprocessing has considerable effect on energy conservation and emission reduction. Therefore, the method strengthens the recovery and the reutilization of the waste textiles, not only has very important contribution to the construction of resource-saving and environment-friendly society, but also has positive promotion effect on the healthy and sustainable development of the textile and chemical fiber industry.
The recycling of polyester waste mainly has two technical paths, one is a physical method, namely, the recycled polyester waste is directly subjected to melt spinning after being cleaned, crushed and dried to obtain corresponding recycled polyester fiber. The second is a chemical method, i.e. the recovered polyester waste is subjected to glycolysis, alcoholysis, hydrolysis, supercritical fluid and other chemical degradation treatments to form a monomer or an intermediate, and then polyester chips are produced by condensation for the next spinning process to produce various types of polyester fibers. The essential difference between the method and the primary terylene is that the diacid (or ester) monomer adopted by the chemical method is subjected to depolymerization at least once and refined at high temperature more than the primary terylene. In China, the physical law accounts for about 80 percent at present, and still occupies the leading position of the commercial recycling of the waste polyester. Although the chemical recovery method is more beneficial to the improvement of product quality and can realize complete recycling in the real sense theoretically, the chemical recovery method also faces triple pressure of economic benefit, raw material supply, processing technology and the like.
The domestic recycled polyester is faced with various textile upstream link problems that waste clothes cannot enter the market, the recycling mode is backward and single, the sorting and cleaning manual dependence is high, the impurity removal and tackifying cost is high, and the downstream printing and dyeing processing research is relatively less. Therefore, it is required to develop a dyeing and finishing process for regenerated polyester fabric.
Disclosure of Invention
In order to solve the technical problems, the invention aims to provide a dyeing and finishing process for a recyclable polyester fabric, which not only improves the dyeing depth, the color fastness and the dyeing and darkening effect, but also ensures higher tearing strength and breaking strength of the fabric by formulating proper pre-dyeing treatment, dyeing process and post-dyeing finishing process according to the characteristics of the fabric.
In order to achieve the technical purpose and achieve the technical effect, the invention is realized by the following technical scheme:
a dyeing and finishing process for a circulating renewable polyester fabric comprises an alkali decrement process, a dyeing process and a finishing process after dyeing which are sequentially carried out;
the alkali deweighting process adopts an alkali deweighting auxiliary agent to carry out alkali deweighting treatment on the regenerated polyester fabric;
the dyeing agent adopted by the dyeing process is composed of a dyeing auxiliary agent and a dye, wherein the dye is a disperse dye, in the dyeing process, when the temperature of a dye vat of a dyeing machine reaches 40 ℃, the dyeing auxiliary agent and the disperse dye are respectively injected, then the temperature of the dye vat is increased to 80 ℃ at the heating rate of 0.8 ℃/min, the temperature is kept for 5min, then is increased to 105 ℃ at the heating rate of 0.8 ℃/min, the temperature is kept for 15min, is increased to 120-130 ℃ at the heating rate of 1 ℃/min, the temperature is kept for 55-60 min, then is reduced to 80 ℃ at the cooling rate of 1.2 ℃/min, and then the fabric is washed with water;
the dyeing finishing process adopts a dyeing finishing agent to carry out padding treatment on the dyed regenerated polyester fabric; the dyeing finishing agent comprises 15-25 g/L of low-refractive-index resin emulsion finishing agent, 0-10 g/L of 2D resin, 1-2 g/L of penetrating agent and 0-5 g/L of magnesium chloride hexahydrate.
The content of the regenerated terylene in the regenerated terylene fabric is 30 to 100 percent.
Further, the alkali decrement auxiliary agent comprises 50-80 g/L of liquid alkali and 78-2 g/L of long-vehicle rapid desizing agent TF-127B1, the temperature of alkali decrement treatment is 95 ℃, and the treatment time is 30 min.
Furthermore, the disperse dye in the dyeing process comprises 0.5-1.5% of disperse red jade S-5BL, 0.5-1% of disperse orange S-4RL and 0.2-0.5% of disperse deep blue H-GL, and the dyeing auxiliary agent comprises 0.5-2 g/L of high-temperature leveling agent TF-212K and 0.5-2 g/L of 50% glacial acetic acid.
Further, the bath ratio of the dyeing process is 1: 20.
further, the pH value of the dye bath in the dyeing process is 4-5.
Further, the dyeing process adopts a high-temperature high-pressure liquid flow dyeing machine for dyeing.
Further, after dyeing and finishing the regenerated polyester fabric, the regenerated polyester fabric is subjected to a shaping process.
Further, the setting temperature of the setting process is 200 ℃, the vehicle speed is 30m/min, the rotating speed of a fan is 1500r/min, and 5 positive overfeeds are formed by the setting machine.
Further, the low refractive index resin emulsion finishing agent comprises one or a combination of two or more of polyurethane emulsion, organic silicon emulsion and acrylic emulsion.
Compared with the prior art, the invention has the following advantages and effects:
(1) the invention carries out alkali decrement treatment on the regenerated polyester fabric by alkali with lower concentration, improves the hand feeling and the luster of the fabric, and can ensure higher tearing strength, breaking strength and breaking elongation of the fabric;
(2) according to the dyeing process, the dyeing temperature is set to be 120-130 ℃, the heat preservation time is 55-60 min, and the heating rate of the dyeing temperature is set to be 0.8-1.0 ℃/min, namely the heating rate is relatively low, so that the dye-uptake of the regenerated polyester fabric is optimal through reasonable design and matching of the dyeing temperature, the dyeing heat preservation time and the dyeing heating rate, a good dyeing effect is ensured, and the dyeing depth and the color fastness are improved;
(3) the method utilizes a dyeing finishing agent to carry out dyeing after-finishing on the dyed regenerated polyester fabric, wherein the dyeing finishing agent comprises a low-refractive-index resin emulsion finishing agent, 2D resin, a penetrating agent and magnesium chloride hexahydrate; according to the invention, the low-refractive-index resin emulsion finishing agent, the 2D resin and other components are matched, so that a uniform low-refractive-index resin film can be formed on the surface of the fabric, the refractive index of the fabric can be reduced, and the color deepening effect of the dyed fabric is improved.
Drawings
Fig. 1 is a dyeing temperature process curve in the dyeing process of the present invention.
Detailed Description
The following detailed description of the preferred embodiments of the present invention, taken in conjunction with the accompanying drawings, will make the advantages and features of the invention easier to understand by those skilled in the art, and thus will clearly and clearly define the scope of the invention.
Examples
Regenerated polyester fabric: the proportion of the regenerated polyester is 100 percent, and the width: 152cm, thread count: 81/cm 35/cm, 75D/48F FDY, grammage: 120 g/m.
The dyeing and finishing processing technology of the circulating renewable polyester fabric comprises an alkali decrement technology, a dyeing technology and a dyeing after-finishing technology which are sequentially carried out;
alkali decrement process: carrying out alkali deweighting treatment on the regenerated polyester fabric by using an alkali deweighting auxiliary agent; the alkali decrement assistant comprises 50g/L of liquid alkali and 2g/L of long-vehicle rapid desizing agent TF-127B, the temperature of alkali decrement treatment is 95 ℃, and the treatment time is 30 min.
The dyeing process comprises the following steps: the dyeing agent adopted by the dyeing process consists of a dyeing auxiliary agent and a dye, wherein the dye is a disperse dye; the disperse dye comprises 1.5% owf of disperse red jade S-5BL, 0.6% owf of disperse orange S-4RL and 0.45% owf of disperse deep blue H-GL, and the dyeing auxiliary agent comprises 2g/L of high-temperature leveling agent TF-212K and 1g/L of 50% glacial acetic acid.
During dyeing, a high-temperature high-pressure liquid flow dyeing machine is used for dyeing, and the bath ratio of the dyeing process is 1: the pH of the dye bath was 20. As shown in fig. 1, when the temperature of a dye vat of a dyeing machine reaches 40 ℃, respectively injecting a dyeing auxiliary agent and a disperse dye, then raising the temperature of the dye vat to 80 ℃ at a heating rate of 0.8 ℃/min, preserving heat for 5min, raising the temperature to 105 ℃ at a heating rate of 0.8 ℃/min, preserving heat for 15min, raising the temperature to 125 ℃ at a heating rate of 1 ℃/min, preserving heat for 55min, then lowering the temperature to 80 ℃ at a cooling rate of 1.2 ℃/min, and then washing the fabric with water;
finishing after dyeing: padding the dyed regenerated polyester fabric by using a dyeing finishing agent; the dyeing finishing agent comprises 20g/L of low-refractive-index resin emulsion finishing agent, 10g/L of 2D resin, 1g/L of penetrating agent and 5g/L of magnesium chloride hexahydrate.
A shaping process: carrying out shaping process treatment on the dyed and finished regenerated polyester fabric; setting process conditions are as follows: setting temperature is 200 ℃, speed is 30m/min, fan speed is 1500r/min, and the setting machine performs 5 positive overfeeds. In the shaping treatment liquid adopted by the shaping process, each liter of the shaping treatment liquid contains 20g of antistatic agent GH-580 and 10g of softening agent.
Dyeing effect test
K/S value, using color measuring and matching instrument to test the surface color depth K/S value of the dyed sample; the dyed sample was tested to have a surface color depth K/S value of 26.45.
Color fastness, including rubfastness rating, discoloration rating, and staining rating. The rubbing fastness is measured according to GB/T3920-2008 'color fastness to rubbing test of textiles'; the color change evaluation is measured according to GB/T250-2008 grey sample card for evaluating color change of textile color fastness test; the staining evaluation is carried out according to GB/T251 plus 2008 grey sample card for textile color fastness test evaluation. The specific results of the color fastness test performed on the dyed recycled polyester fabric sample of this example are shown in table 1:
TABLE 1 results of color fastness testing
Therefore, the regenerated polyester fabric provided by the embodiment of the invention has higher dyeing depth and color fastness, and can meet the dyeing requirements of customers on the regenerated polyester fabric.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes performed by the present specification and drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (9)
1. A dyeing and finishing processing technology of a circulating renewable polyester fabric is characterized by comprising the following steps: the dyeing and finishing processing technology comprises an alkali decrement technology, a dyeing technology and a finishing technology after dyeing which are sequentially carried out;
the alkali deweighting process adopts an alkali deweighting auxiliary agent to carry out alkali deweighting treatment on the regenerated polyester fabric;
the dyeing agent adopted by the dyeing process is composed of a dyeing auxiliary agent and a dye, wherein the dye is a disperse dye, in the dyeing process, when the temperature of a dye vat of a dyeing machine reaches 40 ℃, the dyeing auxiliary agent and the disperse dye are respectively injected, then the temperature of the dye vat is increased to 80 ℃ at the heating rate of 0.8 ℃/min, the temperature is kept for 5min, then is increased to 105 ℃ at the heating rate of 0.8 ℃/min, the temperature is kept for 15min, is increased to 120-130 ℃ at the heating rate of 1 ℃/min, the temperature is kept for 55-60 min, then is reduced to 80 ℃ at the cooling rate of 1.2 ℃/min, and then the fabric is washed with water;
the dyeing finishing process adopts a dyeing finishing agent to carry out padding treatment on the dyed regenerated polyester fabric; the dyeing finishing agent comprises 15-25 g/L of low-refractive-index resin emulsion finishing agent, 0-10 g/L of 2D resin, 1-2 g/L of penetrating agent and 0-5 g/L of magnesium chloride hexahydrate.
2. The dyeing and finishing process of the recycled renewable polyester fabric as claimed in claim 1, wherein: the alkali weight reduction auxiliary agent comprises 50-80 g/L of liquid alkali and 1-2 g/L of long-vehicle rapid desizing agent TF-127B, the temperature of alkali weight reduction treatment is 95 ℃, and the treatment time is 30 min.
3. The dyeing and finishing process of the recycled renewable polyester fabric as claimed in claim 1, wherein: the disperse dye in the dyeing process comprises 0.5-1.5% of disperse red jade S-5BL, 0.5-1% of disperse orange S-4RL and 0.2-0.5% of disperse deep blue H-GL, and the dyeing auxiliary agent comprises 0.5-2 g/L of high-temperature leveling agent TF-212K and 0.5-2 g/L of 50% glacial acetic acid.
4. The dyeing and finishing process of the recycled renewable polyester fabric as claimed in claim 1, wherein: the bath ratio of the dyeing process is 1: 20.
5. the dyeing and finishing process of the recycled renewable polyester fabric as claimed in claim 1, wherein the pH value of the dye bath in the dyeing process is 4-5.
6. The dyeing and finishing process of the circulating renewable polyester fabric as claimed in claim 1, wherein the dyeing process adopts a high temperature and high pressure liquid flow dyeing machine for dyeing.
7. The dyeing and finishing process of the recycled renewable polyester fabric as claimed in claim 1, wherein: after dyeing and finishing the regenerated polyester fabric, the regenerated polyester fabric is also subjected to a shaping process.
8. The dyeing and finishing process of the recycled renewable polyester fabric as claimed in claim 1, wherein: the setting temperature of the setting process is 200 ℃, the vehicle speed is 30m/min, the rotating speed of a fan is 1500r/min, and 5 positive overfeeds are performed by the setting machine.
9. The dyeing and finishing process of the recycled renewable polyester fabric as claimed in claim 1, wherein: the low refractive index resin emulsion finishing agent comprises one or the combination of two or more of polyurethane emulsion, organic silicon emulsion and acrylic emulsion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010610491.7A CN111593584A (en) | 2020-06-30 | 2020-06-30 | Dyeing and finishing processing technology of cyclic renewable polyester fabric |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010610491.7A CN111593584A (en) | 2020-06-30 | 2020-06-30 | Dyeing and finishing processing technology of cyclic renewable polyester fabric |
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| Publication Number | Publication Date |
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| CN111593584A true CN111593584A (en) | 2020-08-28 |
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| CN113502666A (en) * | 2021-06-18 | 2021-10-15 | 吴江瑞嘉纺织有限公司 | High-color-fastness dyeing and finishing process for regenerated polyester fabric |
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Application publication date: 20200828 |