CN111335052A - Dyeing process of regenerated polyester yarn - Google Patents
Dyeing process of regenerated polyester yarn Download PDFInfo
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- CN111335052A CN111335052A CN202010334855.3A CN202010334855A CN111335052A CN 111335052 A CN111335052 A CN 111335052A CN 202010334855 A CN202010334855 A CN 202010334855A CN 111335052 A CN111335052 A CN 111335052A
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- regenerated polyester
- polyester yarn
- dyeing
- heating
- dyeing process
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Links
- 229920000728 polyester Polymers 0.000 title claims abstract description 64
- 238000004043 dyeing Methods 0.000 title claims abstract description 46
- 238000000034 method Methods 0.000 title claims abstract description 30
- 238000010438 heat treatment Methods 0.000 claims abstract description 36
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 34
- 238000002791 soaking Methods 0.000 claims abstract description 23
- 238000004140 cleaning Methods 0.000 claims abstract description 16
- 239000004902 Softening Agent Substances 0.000 claims abstract description 9
- 239000004094 surface-active agent Substances 0.000 claims abstract description 9
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 45
- 239000002351 wastewater Substances 0.000 claims description 26
- 239000000243 solution Substances 0.000 claims description 22
- 238000007599 discharging Methods 0.000 claims description 20
- JVBXVOWTABLYPX-UHFFFAOYSA-L sodium dithionite Chemical compound [Na+].[Na+].[O-]S(=O)S([O-])=O JVBXVOWTABLYPX-UHFFFAOYSA-L 0.000 claims description 19
- -1 polyoxy Polymers 0.000 claims description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 14
- 239000011259 mixed solution Substances 0.000 claims description 9
- 239000002904 solvent Substances 0.000 claims description 7
- 239000007864 aqueous solution Substances 0.000 claims description 6
- 238000001816 cooling Methods 0.000 claims description 6
- 238000005406 washing Methods 0.000 claims description 4
- 239000002253 acid Substances 0.000 claims description 2
- 239000003086 colorant Substances 0.000 claims description 2
- 150000002148 esters Chemical class 0.000 claims 1
- 239000000049 pigment Substances 0.000 abstract description 2
- 238000004321 preservation Methods 0.000 abstract description 2
- 238000005237 degreasing agent Methods 0.000 abstract 1
- 239000013527 degreasing agent Substances 0.000 abstract 1
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 15
- 239000000463 material Substances 0.000 description 5
- 239000004753 textile Substances 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 3
- 239000002699 waste material Substances 0.000 description 3
- 229920004933 Terylene® Polymers 0.000 description 2
- 239000004744 fabric Substances 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 239000005020 polyethylene terephthalate Substances 0.000 description 2
- 238000009987 spinning Methods 0.000 description 2
- 229920000742 Cotton Polymers 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000009998 heat setting Methods 0.000 description 1
- 238000007731 hot pressing Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000002040 relaxant effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000004804 winding Methods 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
- D06P1/44—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
- D06P1/60—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 using compositions containing polyethers
- D06P1/613—Polyethers without nitrogen
-
- 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
-
- 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
-
- 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
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Coloring (AREA)
Abstract
The invention provides a dyeing process of regenerated polyester yarns, which comprises the following steps: adding a degreasing agent, heating and soaking for pretreatment; dyeing by adopting a leveling agent and a dye in a matching way; and carrying out softening treatment after cleaning. According to the dyeing process of the regenerated polyester yarn, the regenerated polyester yarn is pretreated through the oil removing agent, the oil removing agent contains high-concentration surfactant, the temperature is kept at 120-130 ℃ for 20min, the complex components of the regenerated polyester yarn are fully treated, and the surface of the pretreated regenerated polyester yarn can be effectively adhered with dye for dyeing; a leveling agent is added in the dyeing process to be matched with a specific heating rate and a heat preservation process, so that the dye is uniformly dispersed and is uniformly and firmly dyed; and softening the dyed regenerated polyester yarns, adding a softening agent to enable the dyed regenerated polyester yarns to obtain smooth surfaces, further locking pigments and improving the color fastness.
Description
Technical Field
The invention relates to a polyester dyeing process, in particular to a dyeing process of regenerated polyester yarns.
Background
The regenerated polyester fiber is prepared by using polyester cloth, waste polyester bottle chips, spinning waste silk, bubble materials and pulp blocks as raw materials, crushing and cleaning the waste bottle chips, drying a mixture of various materials, performing melt extrusion, spinning, winding, bundling, drafting, curling, relaxing, performing heat setting and cutting to form the polyester fibers with different lengths.
The regenerated terylene fully utilizes the regenerated resources, and has wide market due to low cost and good performance. The regenerated terylene has various varieties and is generally used in the filling industry of furniture and toys, the shoe material industry, the needle cotton industry and the stitch-bonding fabric industry. But the regenerated material has complex components, which causes difficult dyeing and limits the application of the regenerated material.
Disclosure of Invention
In order to solve the problem of difficult dyeing of the existing regenerated polyester, the invention provides a dyeing process of regenerated polyester yarns, which is used for pretreating the regenerated polyester and is matched with a special dyeing process, so that the dyeing effect is good.
The invention provides a dyeing process of regenerated polyester yarns, which comprises the following steps:
s1, pretreatment
Soaking the regenerated polyester yarn in water solution with the oil removing agent content of 1.5-2.5%, heating to the temperature of 120-130 ℃, preserving heat for 20-25min, and then cooling to 20-25 ℃.
S2, dyeing
S2.1, soaking the pretreated regenerated polyester yarn in a dye solution, wherein the dye solution comprises 0.4-0.6% of a leveling agent and 0.5-0.7% of a dye according to mass percent, and adding acid to adjust the pH value to 4-5.
S2.2, heating to 80-85 ℃ at the speed of 1.5 ℃/min, and preserving heat for 10-15 min.
S2.3, heating to 125-135 ℃ at the speed of 1.5 ℃/min, preserving the heat for 30-35min, and then discharging the treated wastewater.
S3, cleaning
S3.1, washing with water
The method is suitable for light-colored regenerated polyester yarns, and loose colors are washed away by clear water directly after dyeing.
S3.2, reduction cleaning
The method is suitable for the deep color regenerated polyester yarns, and after the dyeing wastewater is removed, the mixed solution of sodium hydroxide and sodium hydrosulfite is added; heating to 85-90 deg.C, maintaining the temperature for 20-25min, and discharging the treated wastewater.
S4 softening treatment
Soaking the cleaned regenerated polyester yarn in a solution with the mass content of the softening agent of 2-5%, then heating to 35-40 ℃, preserving heat for 20-25min, and then discharging the treated wastewater.
As a further aspect of the invention, the oil removal agent comprises 35 to 40 wt.% of a surfactant.
As a further scheme of the invention, the leveling agent comprises 25% of polyoxy alkyl ether sulfate, 45% of ethoxy ester, 10% of solvent and 20% of water in percentage by mass.
As a further scheme of the invention, the sodium hydrosulfite is sodium hydrosulfite.
In a further embodiment of the invention, the mass ratio of the sodium hydroxide in the mixed solution of the sodium hydroxide and the sodium hydrosulfite is 1%, and the mass ratio of the sodium hydrosulfite is 1.5%.
The invention has the beneficial effects that:
according to the dyeing process of the regenerated polyester yarn, the regenerated polyester yarn is pretreated through the oil removing agent, the oil removing agent contains high-concentration surfactant, the temperature is kept at 120-130 ℃ for 20min, the complex components of the regenerated polyester yarn are fully treated, and the surface of the pretreated regenerated polyester yarn can be effectively adhered with dye for dyeing.
A leveling agent is added in the dyeing process of the regenerated polyester yarn, and the leveling agent contains 25% of polyoxy alkyl ether sulfate, 45% of ethoxy ester, 10% of solvent and 20% of water. The dye is uniformly dispersed and dyed uniformly and firmly by matching with a specific heating rate and a heat preservation process.
The invention carries out reduction cleaning on the regenerated polyester yarn after deep color dip dyeing, and the mixed solution of sodium hydroxide and sodium hydrosulfite is added, and the temperature is kept for 20-25min at 85-90 ℃, so that the deep color regenerated polyester yarn is developed and reduced to obtain bright color.
The method carries out softening treatment on the dyed regenerated polyester yarns, and the softening agent is added, so that the dyed regenerated polyester yarns obtain smooth surfaces, further lock the pigment, and improve the color fastness.
Detailed Description
The scheme of the application is further described below with reference to specific examples:
example 1
A dyeing process of regenerated polyester yarns comprises the following steps:
s1, pretreatment
Soaking the regenerated polyester yarn in an aqueous solution with the oil removing agent content of 2%, heating to the temperature of 130 ℃, preserving heat for 20min, and then cooling to the temperature of 25 ℃ (room temperature); the oil removing agent contains 35-40 wt.% of surfactant.
S2, dyeing
S2.1, soaking the pretreated regenerated polyester yarn in a dye solution, wherein the dye solution comprises 0.5% of leveling agent and 0.6% of dark dye by mass percent, and adding acetic acid to adjust the pH value to 4-5; the leveling agent comprises 25% of polyoxy alkyl ether sulfate, 45% of ethoxylate, 10% of solvent and 20% of water by mass percent.
S2.2, heating to 80 ℃ at the speed of 1.5 ℃/min, and preserving heat for 10 min.
S2.3, heating to 130 ℃ at the speed of 1.5 ℃/min, preserving the heat for 30min, and then discharging the treated wastewater.
S3, cleaning
S3.1, reduction cleaning
After the dyeing wastewater is removed, adding a mixed solution of sodium hydroxide and sodium hydrosulfite, wherein the mass ratio of the sodium hydroxide is 1%, and the mass ratio of the sodium hydrosulfite is 1.5%; heating to 90 ℃, preserving heat for 20min, and then discharging the treated wastewater.
S4 softening treatment
Soaking the cleaned regenerated polyester yarn in a solution with the mass content of a softening agent of 2%, heating to 40 ℃, preserving heat for 20min, and discharging the treated wastewater.
Example 2
A dyeing process of regenerated polyester yarns comprises the following steps:
s1, pretreatment
Soaking the regenerated polyester yarn in an aqueous solution with the oil removing agent content of 2.5%, heating to 125 ℃, preserving heat for 25min, and then cooling to 25 ℃ (room temperature); the oil removing agent contains 35-40 wt.% of surfactant.
S2, dyeing
S2.1, soaking the pretreated regenerated polyester yarn in a dye solution, wherein the dye solution comprises 0.45% of a leveling agent and 0.6% of a dark dye in percentage by mass, and adding acetic acid to adjust the pH value to 4-5; the leveling agent comprises 25% of polyoxy alkyl ether sulfate, 45% of ethoxylate, 10% of solvent and 20% of water by mass percent.
And S2.2, heating to 85 ℃ at the speed of 1.5 ℃/min, and preserving heat for 10 min.
S2.3, heating to 135 ℃ at the speed of 1.5 ℃/min, preserving the temperature for 30min, and then discharging the treated wastewater.
S3, cleaning
S3.1, reduction cleaning
After the dyeing wastewater is removed, adding a mixed solution of sodium hydroxide and sodium hydrosulfite, wherein the mass ratio of the sodium hydroxide is 1%, and the mass ratio of the sodium hydrosulfite is 1.5%; heating to 90 ℃, preserving heat for 20min, and then discharging the treated wastewater.
S4 softening treatment
Soaking the cleaned regenerated polyester yarn in a solution with the softening agent content of 4% by mass, heating to 40 ℃, preserving the temperature for 20min, and discharging the treated wastewater.
Example 3
A dyeing process of regenerated polyester yarns comprises the following steps:
s1, pretreatment
Soaking the regenerated polyester yarn in an aqueous solution with the oil removing agent content of 2%, heating to the temperature of 130 ℃, preserving heat for 25min, and then cooling to the temperature of 25 ℃ (room temperature); the oil removing agent contains 35-40 wt.% of surfactant.
S2, dyeing
S2.1, soaking the pretreated regenerated polyester yarn in a dye solution, wherein the dye solution comprises 0.6% of a leveling agent and 0.7% of a light-color dye in percentage by mass, and adding acetic acid to adjust the pH value to 4-5; the leveling agent comprises 25% of polyoxy alkyl ether sulfate, 45% of ethoxylate, 10% of solvent and 20% of water by mass percent.
S2.2, heating to 80 ℃ at the speed of 1.5 ℃/min, and preserving heat for 10 min.
S2.3, heating to 130 ℃ at the speed of 1.5 ℃/min, preserving the heat for 30min, and then discharging the treated wastewater.
S3, cleaning
S3.1, washing with water
After dyeing, the loose color is directly washed away by clear water.
S4 softening treatment
Soaking the cleaned regenerated polyester yarn in a solution with the softening agent content of 4% by mass, heating to 40 ℃, preserving the temperature for 20min, and discharging the treated wastewater.
Comparative example 1
A dyeing process of regenerated polyester yarns comprises the following steps:
s1, pretreatment
Soaking the regenerated polyester yarns in an aqueous solution with the oil removal agent content of 2%, and soaking for 20min at room temperature, wherein the oil removal agent contains 25 wt.% of surfactant.
S2, dyeing
S2.1, soaking the pretreated regenerated polyester yarn in a dye solution, wherein the dye solution comprises 0.5% of leveling agent and 0.6% of dark dye by mass percent, and adding acetic acid to adjust the pH value to 4-5; the leveling agent comprises 25% of polyoxy alkyl ether sulfate, 45% of ethoxylate, 10% of solvent and 20% of water by mass percent.
S2.2, heating to 80 ℃ at the speed of 1.5 ℃/min, and preserving heat for 10 min.
S2.3, heating to 130 ℃ at the speed of 1.5 ℃/min, preserving the heat for 30min, and then discharging the treated wastewater.
S3, cleaning
S3.1, reduction cleaning
After the dyeing wastewater is removed, adding a mixed solution of sodium hydroxide and sodium hydrosulfite, wherein the mass ratio of the sodium hydroxide is 1%, and the mass ratio of the sodium hydrosulfite is 1.5%; heating to 90 ℃, preserving heat for 20min, and then discharging the treated wastewater.
S4 softening treatment
Soaking the cleaned regenerated polyester yarn in a solution with the mass content of a softening agent of 2%, heating to 40 ℃, preserving heat for 20min, and discharging the treated wastewater.
Comparative example 2
A dyeing process of regenerated polyester yarns comprises the following steps:
s1, pretreatment
Soaking the regenerated polyester yarn in an aqueous solution with the oil removing agent content of 2%, heating to the temperature of 130 ℃, preserving heat for 20min, and then cooling to the temperature of 25 ℃ (room temperature); the oil removing agent contains 35-40 wt.% of surfactant.
S2, dyeing
S2.1, soaking the pretreated regenerated polyester yarn in a dye solution, wherein the dye solution contains 0.6% of dark dye by mass percent, and adding acetic acid to adjust the pH value to 4-5.
S2.2, heating to 80 ℃ at the speed of 1.5 ℃/min, and preserving heat for 10 min.
S2.3, heating to 130 ℃ at the speed of 1.5 ℃/min, preserving the heat for 30min, and then discharging the treated wastewater.
S3, cleaning
S3.1, reduction cleaning
After the dyeing wastewater is removed, adding a mixed solution of sodium hydroxide and sodium hydrosulfite, wherein the mass ratio of the sodium hydroxide is 1%, and the mass ratio of the sodium hydrosulfite is 1.5%; heating to 90 ℃, preserving heat for 20min, and then discharging the treated wastewater.
S4 softening treatment
Soaking the cleaned regenerated polyester yarn in a solution with the mass content of a softening agent of 2%, heating to 40 ℃, preserving heat for 20min, and discharging the treated wastewater.
The regenerated polyester yarns dyed by the dyeing processes of examples 1 to 3 and comparative examples 1 and 2 were subjected to a performance test:
dye uptake and fixation
TABLE 1
Secondly, color fastness tests are carried out according to GB/T3921-2008 textile color fastness test color fastness to washing, GB/T3920-2008 textile color fastness test color fastness to rubbing, GB/T5712-1997 textile color fastness test color fastness to rubbing of organic solvent, GB/T5718-1997 textile color fastness test color fastness to dry heat (except hot pressing), and the test results are shown in the following table 2.
TABLE 2
The above preferred embodiments should be considered as examples of the embodiments of the present application, and technical deductions, substitutions, improvements and the like similar to, similar to or based on the embodiments of the present application should be considered as the protection scope of the present patent.
Claims (5)
1. The dyeing process of the regenerated polyester yarn is characterized by comprising the following steps:
s1, pretreatment
Soaking the regenerated polyester yarn in an aqueous solution with the oil removal agent content of 1.5-2.5%, heating to the temperature of 120-130 ℃, preserving heat for 20-25min, and then cooling to 20-25 ℃;
s2, dyeing
S2.1, soaking the pretreated regenerated polyester yarn in a dye solution, wherein the dye solution comprises 0.4-0.6% of a leveling agent and 0.5-0.7% of a dye according to mass percent, and adding acid to adjust the pH value to 4-5;
s2.2, heating to 80-85 ℃ at the speed of 1.5 ℃/min, and preserving heat for 10-15 min;
s2.3, heating to 125-135 ℃ at the speed of 1.5 ℃/min, preserving the heat for 30-35min, and then discharging the treated wastewater;
s3, cleaning
S3.1, washing with water
The method is suitable for light-colored regenerated polyester yarns, and loose colors are washed away by clear water directly after dyeing;
s3.2, reduction cleaning
The method is suitable for the deep color regenerated polyester yarns, and after the dyeing wastewater is removed, the mixed solution of sodium hydroxide and sodium hydrosulfite is added; heating to 85-90 ℃, preserving heat for 20-25min, and then discharging the treated wastewater;
s4 softening treatment
Soaking the cleaned regenerated polyester yarn in a solution with the mass content of the softening agent of 2-5%, then heating to 35-40 ℃, preserving heat for 20-25min, and then discharging the treated wastewater.
2. The dyeing process of the regenerated polyester yarn according to claim 1, characterized in that the oil removing agent contains 35-40 wt.% of surfactant.
3. The dyeing process of the regenerated polyester yarn as claimed in claim 1, wherein the leveling agent comprises 25% of polyoxy alkyl ether sulfate, 45% of ethoxylated ester, 10% of solvent and 20% of water by mass percent.
4. The dyeing process of the regenerated polyester yarn as claimed in claim 1, wherein the sodium hydrosulfite is sodium hydrosulfite.
5. The dyeing process of the regenerated polyester yarn as claimed in claim 4, wherein the mass percentage of the sodium hydroxide in the mixed solution of the sodium hydroxide and the sodium hydrosulfite is 1%, and the mass percentage of the sodium hydrosulfite is 1.5%.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010334855.3A CN111335052B (en) | 2020-04-24 | 2020-04-24 | Dyeing process of regenerated polyester yarn |
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| CN202010334855.3A CN111335052B (en) | 2020-04-24 | 2020-04-24 | Dyeing process of regenerated polyester yarn |
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| CN111335052B CN111335052B (en) | 2022-11-15 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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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| Publication number | Priority date | Publication date | Assignee | Title |
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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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| CN111335052B (en) | 2022-11-15 |
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