CN111535050A - PLA wool top dyeing process - Google Patents
PLA wool top dyeing process Download PDFInfo
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- CN111535050A CN111535050A CN202010467480.8A CN202010467480A CN111535050A CN 111535050 A CN111535050 A CN 111535050A CN 202010467480 A CN202010467480 A CN 202010467480A CN 111535050 A CN111535050 A CN 111535050A
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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
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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
- D06P1/0032—Determining dye recipes and dyeing parameters; Colour matching or monitoring
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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
- D06P1/653—Nitrogen-free carboxylic acids or their salts
- D06P1/6533—Aliphatic, araliphatic or cycloaliphatic
-
- 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
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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
- 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
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Dispersion Chemistry (AREA)
- Coloring (AREA)
Abstract
The invention provides a PLA top dyeing process, which comprises the following steps: 1) adding a deoiling agent at room temperature, heating to 50 ℃, keeping the temperature for 15 minutes, and overflowing and washing for 10 minutes; 2): adding a penetration enhancer and anhydrous sodium acetate at room temperature, adding a diffusion enhancer, quantitatively adding a dye after 10 minutes, adding formic acid, adjusting the pH value to 4-5, heating to 50 ℃ after 10 minutes, keeping the temperature for 10 minutes, heating to 115 ℃ at the speed of 0.5-1 ℃/minute, and keeping the temperature for 30-60 minutes according to the concentration of the dye. Then the temperature is reduced to 50 ℃ at the speed of 2 ℃/minute; 3) adding the sodium carbonate, the bleaching powder and the dispersant at room temperature, heating to 50 ℃ after 10 minutes, keeping the temperature for 30 minutes, overflowing and washing with warm water at 50 ℃ for two times, each time for 10-15 minutes, and overflowing and washing with cold water at 30 ℃ for 10 minutes. The PLA wool top dyeing process provided by the invention has small damage to the performance of the fiber, and the strength, the elongation and the like of the fiber can meet the requirements of the wearability.
Description
Technical Field
The invention relates to the field of wool top preparation, in particular to a PLA wool top dyeing process.
Background
The polylactic acid fiber (PLA fiber) is prepared by using starch-containing agricultural products such as corn, wheat and beet as raw materials, fermenting to generate lactic acid, and then performing polycondensation and melt spinning. Because the PLA fiber can be naturally degraded, the PLA fiber is an ecological, environment-friendly and recyclable green fiber. The polylactic acid fiber has low density, silky luster, high breaking strength and elongation at break, low Young modulus and belongs to high-strength, medium-elongation and low-modulus fibers. Although the PLA fiber has low moisture absorption, the PLA fiber has strong moisture conduction capability and good wicking capability. Meanwhile, the fiber has strong ultraviolet resistance, belongs to flame-retardant fiber and releases low heat during combustion. Polylactic acid fiber has various excellent properties, thus having a wide market potential and requiring development of a corresponding dyeing process.
Polylactic acid fiber is synthesized by condensation polymerization of lactic acid molecules, belongs to aliphatic polyester fiber, has a moisture regain of about 0.5% in a standard state, belongs to hydrophobic fiber, and has certain affinity with nonionic hydrophobic disperse dye, so that the polylactic acid fiber is dyed by the disperse dye. Research shows that the dyeing rate of the disperse dye on PLA fiber depends on the dyeing rate of the dye and the affinity of the dye on the fiber. The size, the nature and the number of polar groups, the molecular structure shape, the energy level and the like of the dye molecules can influence the dye uptake and affinity of the dye, so that the dye uptake is influenced. In the conventional disperse dyes, the dye uptake of PLA is low due to a plurality of dyes, so that the color of the fiber is light and the fiber is difficult to dye in deep color. Meanwhile, the PLA is a typical fiber with easy-in and easy-out dye due to the structure of the PLA (namely, the dye is easy to diffuse into the fiber and also easy to desorb from the fiber), so that the dyeing fastness of friction, sweat stain, water washing and the like after dyeing is poor, and the requirements for clothing are difficult to meet, thereby restricting the development of the PLA fiber.
Disclosure of Invention
The invention aims to solve the problems in the background art, and provides a PLA top dyeing process which can improve the color yield of PLA fibers, improve various dyeing fastnesses and reduce the damage to the fiber strength.
In order to solve the technical problems, the technical scheme provided by the invention is as follows:
a PLA wool top dyeing process comprises the following steps:
1) pretreatment of wool tops: adding a deoiling agent at room temperature, heating to 50 ℃ after 10 minutes, preserving heat for 15 minutes, overflowing, washing for 10 minutes, and draining;
2) dyeing wool tops: adding a penetration enhancer and anhydrous sodium acetate at room temperature, soaking for 10 minutes, adding a diffusion enhancer, adding a dye quantitatively for 10 minutes, adding formic acid, adjusting the pH value to 4-5, heating to 50 ℃ after 10 minutes, keeping the temperature for 10 minutes, heating to 115 ℃ at the speed of 0.5-1 ℃/minute, and keeping the temperature for 30-60 minutes according to the dye concentration. Then the temperature is reduced to 50 ℃ at the speed of 2 ℃/min, and water is discharged;
3) reduction and cleaning: adding the sodium carbonate, the bleaching wool powder and the dispersing agent at room temperature, heating to 50 ℃ after 10 minutes, keeping the temperature for 30 minutes, overflowing and washing with warm water at 50 ℃ for two times, each time for 10-15 minutes, overflowing and washing with cold water at 30 ℃ for 10 minutes, and draining.
As a refinement, the degreaser is TISSOCYL RC9-C and is used in an amount of 2 mL/L.
As an improvement, the penetration enhancer is ALBAFLOW FFW and the dosage of the penetration enhancer is 0.5 mL/L; the using amount of the anhydrous sodium acetate is 1g/L, the diffusion promoter is UNIVADINE DFM and the using amount thereof is 1%, the dye is DIANIX disperse dye, and the using amount of the formic acid is 1 mL/L.
As an improvement, the dosage of the soda ash is 1.5g/L, the dosage of the bleaching powder is AROSTIT IT GR and is 1.5g/L, and the dosage of the dispersant is AVOLAN IW-FL and is 2 g/L.
The invention has the beneficial effects that:
after proper disperse dyes are screened out and an optimized dyeing process is adopted, the dyeing rate of the fiber can be improved, and the color depth is improved; meanwhile, various dyeing fastnesses can be improved. The dyeing process has small damage to the performance of the fiber, and the strength, the elongation and the like of the fiber can meet the requirements of the wearability.
Detailed Description
The invention is illustrated below by means of specific examples, without being restricted thereto.
Example one
A PLA wool top dyeing process comprises the following steps:
1) pretreatment of wool tops: adding a deoiling agent at room temperature, heating to 50 ℃ after 10 minutes, preserving heat for 15 minutes, overflowing, washing for 10 minutes, and draining, wherein the deoiling agent is TISSOCYL RC9-C and the dosage of the deoiling agent is 2 mL/L;
2) dyeing wool tops: adding a penetration enhancer and anhydrous sodium acetate at room temperature, soaking for 10 minutes, adding a diffusion enhancer, adding a dye quantitatively for 10 minutes, adding formic acid, adjusting the pH value to 4.5, heating to 50 ℃ after 10 minutes, keeping the temperature for 10 minutes, heating to 115 ℃ at the speed of 0.5 ℃/minute, and keeping the temperature for 30 minutes. Cooling to 50 ℃ at the speed of 2 ℃/min, and draining, wherein the penetration enhancer is ALBAFLOW FFW and the dosage of the penetration enhancer is 0.5 mL/L; the using amount of the anhydrous sodium acetate is 1g/L, the diffusion promoter is UNIVADINE DFM and is 1%, the dye is DIANIX disperse dye and is 8.4%, and the using amount of the formic acid is 1 mL/L;
3) reduction and cleaning: adding soda ash, bleaching powder and a dispersing agent at room temperature, after 10 minutes, heating to 50 ℃, keeping the temperature for 30 minutes, then overflowing and washing with warm water at 50 ℃ for two times, each time for 10 minutes, then overflowing and washing with cold water at 30 ℃ for 10 minutes, and draining, wherein the consumption of the soda ash is 1.5g/L, the consumption of the bleaching powder is AROSTIT IT GR and 1.5g/L, and the consumption of the dispersing agent is AVOLAN IW-FL and 2 g/L.
Example two
A PLA wool top dyeing process comprises the following steps:
1) pretreatment of wool tops: adding a deoiling agent at room temperature, heating to 50 ℃ after 10 minutes, preserving heat for 15 minutes, overflowing, washing for 10 minutes, and draining, wherein the deoiling agent is TISSOCYL RC9-C and the dosage of the deoiling agent is 2 mL/L;
2) dyeing wool tops: adding a penetration enhancer and anhydrous sodium acetate at room temperature, soaking for 10 minutes, adding a diffusion enhancer, adding a dye quantitatively after 10 minutes, adding formic acid, adjusting the pH value to 4.8, heating to 50 ℃ after 10 minutes, keeping the temperature for 10 minutes, heating to 115 ℃ at the speed of 1 ℃/minute, and keeping the temperature for 60 minutes. Cooling to 50 ℃ at the speed of 2 ℃/min, and draining, wherein the penetration enhancer is ALBAFLOW FFW and the dosage of the penetration enhancer is 0.5 mL/L; the using amount of the anhydrous sodium acetate is 1g/L, the diffusion promoter is UNIVADINE DFM and is 1%, the dye is DIANIX disperse dye and is 9.45%, and the using amount of the formic acid is 1 mL/L;
3) reducing and cleaning, namely adding soda ash, bleaching powder and a dispersing agent at room temperature, heating to 50 ℃ after 10 minutes, keeping the temperature for 30 minutes, overflowing and washing twice with warm water at 50 ℃ for 15 minutes each time, overflowing and washing for 10 minutes with cold water at 30 ℃, draining, wherein the consumption of the soda ash is 1.5g/L, the bleaching powder is AROSTIT IT GR and the consumption thereof is 1.5g/L, and the dispersing agent is AVOLAN IW-FL and the consumption thereof is 2 g/L.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (4)
1. A PLA wool top dyeing process is characterized by comprising the following steps:
1) pretreatment of wool tops: adding a deoiling agent at room temperature, heating to 50 ℃ after 10 minutes, preserving heat for 15 minutes, overflowing, washing for 10 minutes, and draining;
2) dyeing wool tops: adding a penetration enhancer and anhydrous sodium acetate at room temperature, soaking for 10 minutes, adding a diffusion enhancer, adding a dye quantitatively for 10 minutes, adding formic acid, adjusting the pH value to 4-5, heating to 50 ℃ after 10 minutes, keeping the temperature for 10 minutes, heating to 115 ℃ at the speed of 0.5-1 ℃/minute, and keeping the temperature for 30-60 minutes according to the dye concentration. Then the temperature is reduced to 50 ℃ at the speed of 2 ℃/min, and water is discharged;
3) reduction and cleaning: adding the sodium carbonate, the bleaching wool powder and the dispersing agent at room temperature, heating to 50 ℃ after 10 minutes, keeping the temperature for 30 minutes, overflowing and washing with warm water at 50 ℃ for two times, each time for 10-15 minutes, overflowing and washing with cold water at 30 ℃ for 10 minutes, and draining.
2. The PLA wool top dyeing process of claim 1, wherein the degreaser is tissocyolrc 9-C and is used in an amount of 2 mL/L.
3. The PLA wool top dyeing process of claim 1, wherein the penetration enhancer is ALBAFLOW FFW and is used in an amount of 0.5 mL/L; the using amount of the anhydrous sodium acetate is 1g/L, the diffusion promoter is UNIVADINE DFM and the using amount thereof is 1%, the dye is DIANIX disperse dye, and the using amount of the formic acid is 1 mL/L.
4. The PLA wool top dyeing process of claim 1, wherein the soda ash is used in an amount of 1.5g/L, the bleaching powder is AROSTIT IT GR and is used in an amount of 1.5g/L, and the dispersant is AVOLAN IW-FL and is used in an amount of 2 g/L.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010467480.8A CN111535050A (en) | 2020-05-28 | 2020-05-28 | PLA wool top dyeing process |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010467480.8A CN111535050A (en) | 2020-05-28 | 2020-05-28 | PLA wool top dyeing process |
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| Publication Number | Publication Date |
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| CN111535050A true CN111535050A (en) | 2020-08-14 |
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| CN202010467480.8A Pending CN111535050A (en) | 2020-05-28 | 2020-05-28 | PLA wool top dyeing process |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1558023A (en) * | 2004-02-13 | 2004-12-29 | 浙江华孚色纺有限公司 | Dyeing method of polylactic acid fiber |
| US20070271710A1 (en) * | 2004-06-25 | 2007-11-29 | Dystar Textifarben Gmbh & Co. Deutschland Kg | Disperse Dyes for Poly(Lactic Acid) Based Fibers |
| CN101082153A (en) * | 2006-05-29 | 2007-12-05 | 山东理工大学 | Polylactic acid fabric knitted cloth dyeing technique |
| CN102182082A (en) * | 2011-04-06 | 2011-09-14 | 凯诺科技股份有限公司 | Strip dyeing method for corn fibers |
| CN107385955A (en) * | 2017-07-28 | 2017-11-24 | 阳信瑞鑫集团有限公司 | A kind of zein fiber dyeing |
-
2020
- 2020-05-28 CN CN202010467480.8A patent/CN111535050A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1558023A (en) * | 2004-02-13 | 2004-12-29 | 浙江华孚色纺有限公司 | Dyeing method of polylactic acid fiber |
| US20070271710A1 (en) * | 2004-06-25 | 2007-11-29 | Dystar Textifarben Gmbh & Co. Deutschland Kg | Disperse Dyes for Poly(Lactic Acid) Based Fibers |
| CN101082153A (en) * | 2006-05-29 | 2007-12-05 | 山东理工大学 | Polylactic acid fabric knitted cloth dyeing technique |
| CN102182082A (en) * | 2011-04-06 | 2011-09-14 | 凯诺科技股份有限公司 | Strip dyeing method for corn fibers |
| CN107385955A (en) * | 2017-07-28 | 2017-11-24 | 阳信瑞鑫集团有限公司 | A kind of zein fiber dyeing |
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Application publication date: 20200814 |