CN111041859A - Polyester microfiber dyeing method with high color fastness - Google Patents
Polyester microfiber dyeing method with high color fastness 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
- D06P1/16—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
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M15/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
- D06M15/01—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with natural macromolecular compounds or derivatives thereof
- D06M15/03—Polysaccharides or derivatives thereof
- D06M15/05—Cellulose or derivatives thereof
- D06M15/09—Cellulose ethers
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- 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
- D06M15/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
- D06M15/19—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with synthetic macromolecular compounds
- D06M15/21—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- D06M15/327—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds of unsaturated alcohols or esters thereof
- D06M15/333—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds of unsaturated alcohols or esters thereof of vinyl acetate; Polyvinylalcohol
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- 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
- D06M15/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
- D06M15/19—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with synthetic macromolecular compounds
- D06M15/37—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- D06M15/564—Polyureas, polyurethanes or other polymers having ureide or urethane links; Precondensation products forming them
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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
- D06P3/82—Textiles which contain different kinds of fibres
- D06P3/8204—Textiles which contain different kinds of fibres fibres of different chemical nature
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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
- D06P3/82—Textiles which contain different kinds of fibres
- D06P3/8204—Textiles which contain different kinds of fibres fibres of different chemical nature
- D06P3/8276—Textiles which contain different kinds of fibres fibres of different chemical nature mixtures of fibres containing ester groups
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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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- 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
- D06M2101/18—Synthetic fibres consisting of macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- D06M2101/20—Polyalkenes, polymers or copolymers of compounds with alkenyl groups bonded to aromatic groups
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- 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
Abstract
The invention discloses a polyester microfiber dyeing method with high color fastness, which is characterized by comprising the following steps: 1) the gram weight of the product is 20-1500 g/m2The ultrafine fiber nonwoven fabric of (1); 2) pre-impregnating the superfine fiber non-woven fabric in the step 1): use ofModifying PVA and CMC, regulating the viscosity to 300-5000 cp.s, regulating the solid content to 2-30%, impregnating the tape liquid to 30-300%, and drying at the temperature of 110-150 ℃; 3) carrying out polyurethane impregnation treatment on the semi-finished product in the step 2): polyurethane is used, the viscosity is adjusted to 300-30000 cp.s, the solid content is adjusted to 5% -40%, the impregnation liquid is 30-300%, and the drying is carried out at the temperature of 90-160 ℃; 4) carrying out dyeing finishing on the semi-finished product in the step 3): directly dyeing the fibril which is not opened by adopting a disperse dye, wherein the particle size of the disperse dye is 0.3-10 mu m; 5) and (4) performing alkali decrement fiber opening treatment on the semi-finished product in the step 4). The polyester microfiber prepared by the polyester microfiber dyeing method with high color fastness has high color fastness and good comprehensive performance.
Description
Technical Field
The invention relates to the technical field of polyester fixed island microfiber suede leather, in particular to a polyester microfiber dyeing method with high color fastness.
Background
The microfiber leather has a three-dimensional structure and elastic hand feeling which are the most similar to those of natural leather, and is increasingly sought by the market as a substitute of real leather, and particularly suede-style suede leather is the highest grade in the microfiber field. However, some properties of the fabric can not meet the application requirements, and the fabric is rarely applied to high-end garment fabrics and automotive interiors.
The dyeing methods of the prior art also have the following drawbacks:
1. the color fastness problem, because the superfine fiber fineness is finer, the fiber diameter is smaller, the specific surface area is larger, the dye adsorption amount on the fiber surface is also greatly increased, the adsorbed dye fastness is poorer, and the dye can fall off or migrate when the fiber is rubbed or contacted with other fabric materials for a long time, and finally the color fastness is poorer;
2. the coloring of the inner layer is difficult, the surface of the PET is easy to absorb the dye flooding, and the color fastness of each item is poor.
3. The microfiber produced by the prior art adopts 1dtex to 6.5dtex 16-island and 37-island nylon superfine fiber (PA6/COPET) and 16-island and 37-island polyester superfine fiber (PET/COPET) to impregnate polyurethane, the polyurethane is subjected to alkali decrement or toluene splitting, then is dyed by acid dye or disperse dye, and is finished by post-finishing processing, and the color fastness such as dry and wet rubbing, color migration, solarization and the like is difficult to reach 4 grades or above (5-grade system).
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the polyester microfiber dyeing method with high color fastness is developed, and the polyester microfiber prepared by the polyester microfiber dyeing method with high color fastness has high color fastness and good comprehensive performance.
The invention aims to solve the problems existing in the prior art and provide a polyester microfiber dyeing method with high color fastness.
In order to achieve the purpose, the invention adopts the following technical scheme:
a polyester microfiber dyeing method with high color fastness comprises the following steps:
1) preparing the superfine fiber non-woven fabric: selecting a 16 'island', a 37 'island' or a 64 'island' with the specification of 1 dtex-6.5 dtex, wherein the components are PET/COPET or PE or PS, fixed island fibers with the mass ratio of 90: 10-50: 50 and short fibers with the length of 20-120 mm, and carrying out needling, spunlacing or needling and spunlacing to obtain the fiber with the gram weight of 20-1500 g/m2The ultrafine fiber nonwoven fabric of (1);
2) pre-impregnating the superfine fiber non-woven fabric in the step 1): the polyester microfiber dyeing method cp & s for regulating the viscosity to 300-5000 high color fastness by using modified PVA and CMC has the solid content regulated to 2-30%, the impregnation liquid 30-300% and the drying at the temperature of 110-150 ℃;
3) carrying out polyurethane impregnation treatment on the semi-finished product in the step 2): the polyester microfiber dyeing method cp & s with the viscosity adjusted to 300-30000 high color fastness by using polyurethane, the solid content is adjusted to 5% -40%, the impregnation liquid is 30-300%, and the polyester microfiber is dried at the temperature of 90-160 ℃;
4) carrying out dyeing finishing on the semi-finished product in the step 3): and (3) directly dyeing the fibril which is not subjected to fiber opening by using a disperse dye, wherein the particle size of the disperse dye molecules is 0.3-10 mu m.
5) And (4) performing alkali decrement fiber opening treatment on the semi-finished product in the step 4).
As a further preferred embodiment, 16-island, 37-island or 64-island sea-island fibers with fineness of 1dtex to 6.5dtex are adopted in the step 1), the island component is polyester PET, the sea component is any one of modified polyester COPET, polyethylene PE and polystyrene PS, the ratio of the two components is 90: 10-50: 50, the fineness is 1dtex to 5dtex, and the length is 20mm to 120 mm.
As a further preferred embodiment, step 4) dyeing the undrawn fixed island bicomponent fiber firstly and then reducing and splitting, wherein the particle size of the disperse dye is selected to be 0.3-10 μm, the dyeing process is carried out at 40-50 ℃, the temperature is raised at the rate of 0.5-1 ℃/min, the temperature is raised to 120-140 ℃, the temperature is kept for 20-60 min, the temperature is lowered at the rate of 2-5 ℃/min, the temperature is lowered to 50-70 ℃, the waste liquid is discharged, cleaned with clear water, and the fiber is shaped and dried at 100-140 ℃ after being taken out of a cylinder.
As a further preferred embodiment, in the step 5), alkali weight reduction fiber opening is carried out on the 'sea' component COPET, the process comprises the steps of adjusting the concentration of the dipping sodium hydroxide to be 1% -15%, carrying out water bath reaction at the temperature of 80-100 ℃, reacting for 20-90 min, and reacting the sodium hydroxide with the COPET.
In the step 5), after full reaction, the bi-component sea-island fiber is changed into the mono-component PET fiber, and for the one with the sea component of PE or PS, the PE and the PS are extracted by toluene to carry out decrement fiber opening.
As a further preferred embodiment, the reaction is carried out in a water bath, and the reaction time is 20-90 min.
Compared with the prior art, the invention has the following beneficial effects:
(1) the invention adopts 5dtex terylene sea-island superfine fiber to replace the conventional 3.5dtex terylene sea-island superfine fiber, and selects disperse dye with the grain diameter of less than 0.5 mu m to replace large-grain-diameter disperse dye to prepare the terylene superfine fiber with high color fastness;
(2) in the preparation steps, the sea component COPET swells at high temperature, dye molecules penetrate through the COPET layer and enter the island component PET fibers, the swelling of the fibers is reduced at low temperature, the dye molecules are sealed in the island component PET fibers, and the feasibility of adsorbing and dispersing the dye molecules on the outer surface of the PET is very low due to the fact that the outer surface of the PET is the COPET fibers, so that the dry-wet rubbing fastness, the color migration fastness and the like of the island component PET fibers are high.
(3) The process of dyeing firstly and then reducing is adopted, so that the problem that the inner layer of the island component PET of the bi-component fiber can be colored, the surface of the PET does not adsorb dye flooding is solved, and all color fastness can reach 4 grades and above.
(4) Before the bi-component fiber is not split, namely the surface of the PET fiber of the island component is dyed before being exposed, dye molecules only enter the fiber and cannot appear on the surface of the fiber, and the problem of dyeing color fastness is well guaranteed.
Drawings
FIG. 1 is a schematic diagram of a 37 island bicomponent islands-in-the-sea fiber structure of the present invention
FIG. 2 is a schematic representation of the monocomponent "island" fiber structure of the present invention
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clear, the present invention is further described with reference to the following embodiments:
a polyester microfiber dyeing method with high color fastness comprises the following steps:
(1) preparing 37-island polyester fixed-island microfiber non-woven fabric: firstly, 37-island 5dtex multiplied by 51mm fixed-island sea-island short fiber of 70% PET/30% COPET bi-component is processed into 400g/m by needle punching2The terylene microfiber non-woven fabric.
(2) Impregnation of waterborne polyurethane: the impregnation solid content of the polyester microfiber non-woven fabric is 35%, the viscosity of the aliphatic waterborne polyurethane is 600cps, the impregnation liquid of the polyester microfiber non-woven fabric is 220%, and the polyester microfiber non-woven fabric is dried by an up-and-down blowing type oven.
(3) And (3) carrying out disperse dye dyeing finishing on the non-woven fabric after the impregnated polyurethane is dried: weighing the base cloth obtained in the step 2) and putting the base cloth into a dyeing vat, wherein the fiber fineness is 5dtex, the diameter is small, the particle size of the disperse dye is below 0.5 mu m, the disperse dye has small particle size and good dispersibility in the solution, the disperse dye can easily penetrate through sea components in a 130 ℃ dye bath and enter the inner island components of the fibers, the diffusion resistance is small, the high-color-fastness deep-color fabric can be dyed more easily, the residual liquid is discharged after the dyeing process is finished, and the fabric is washed with water for 30min under the condition of clear water and normal temperature.
(4) Carrying out alkali decrement treatment on the base cloth in the step 3): after the washed microfiber base fabric is washed, a 3% sodium hydroxide solution is added, alkali reduction finishing is directly carried out in a dye vat, the temperature is raised to 95 ℃, the reaction is carried out for 60min, the dye adsorbed on the surface of the COPET and a small amount of dye staying in the COPET are completely washed away by alkali while the sodium hydroxide reacts with the COPET which is a fiber sea component, after the reduction procedure is finished, the microfiber base fabric is washed by clean water for 30min, and then is dried in an oven.
Example 1
1) Preparing 37-island polyester fixed-island microfiber non-woven fabric: the double-component 37-island fixed island fiber with the fineness of 5dtex and 70 percent PET/30 percent COPET is processed into the fixed island fiber with the gram weight of 400g/m by a needling procedure2Superfine fiber non-woven fabric;
2) impregnation of waterborne polyurethane: dipping water-washed polyurethane with solid content of 35%;
3) and (3) carrying out disperse dye dyeing finishing on the non-woven fabric after the impregnated polyurethane is dried: drying the 220% of the band liquid, dyeing at 130 ℃ and high temperature and high pressure, and selecting the disperse dye with the particle size of about 2 mu m;
4) carrying out alkali decrement treatment on the base cloth in the step 3): and (3) carrying out alkali decrement finishing after dyeing and water washing, reacting for 60min at 95 ℃ with the concentration of sodium hydroxide being 3%, and washing and drying to obtain the polyester microfiber suede leather.
The 37-island terylene land-fixing microfiber non-woven fabric prepared in example 1 has the dry-wet rubbing fastness of grade 3 and the light fastness of grade 3.5.
Example 2
1) Preparing 37-island polyester fixed-island microfiber non-woven fabric: the double-component 37-island fixed-island fiber with fineness of 3.5dtex and 70% PET/30% COPET is processed into the fixed-island fiber with the gram weight of 400g/m by a needling process2Superfine fiber non-woven fabric;
2) impregnation of waterborne polyurethane: dipping water-washed polyurethane with solid content of 35%;
3) and (3) carrying out disperse dye dyeing finishing on the non-woven fabric after the impregnated polyurethane is dried: drying the 220% of the band liquid, dyeing at 130 ℃ and high temperature and high pressure, and selecting the disperse dye with the particle size of about 0.5 mu m;
4) carrying out alkali decrement treatment on the base cloth in the step 3): and (3) carrying out alkali decrement finishing after dyeing and water washing, reacting for 60min at 95 ℃ with the concentration of sodium hydroxide being 3%, and washing and drying to obtain the polyester microfiber suede leather.
The polyester microfiber suede leather of example 2 has dry and wet rubbing fastness of grade 3.5 and light fastness of grade 3.5.
Example 3
1) Preparing 37-island polyester fixed-island microfiber non-woven fabric: the double-component 37-island fixed island fiber with the fineness of 5dtex and 70 percent PET/30 percent COPET is processed into the fixed island fiber with the gram weight of 400g/m by a needling procedure2Superfine fiber non-woven fabric;
2) impregnation of waterborne polyurethane: dipping water-washed polyurethane with solid content of 35%;
3) and (3) carrying out disperse dye dyeing finishing on the non-woven fabric after the impregnated polyurethane is dried: drying the 220% of the band liquid, performing alkali decrement finishing, reacting at 95 ℃ for 60min, washing with water, drying, performing high-temperature high-pressure dyeing at 130 ℃, and selecting a disperse dye with the particle size of about 0.5 mu m;
4) carrying out alkali decrement treatment on the base cloth in the step 3): and (5) obtaining the polyester microfiber suede leather after dyeing and washing.
The polyester microfiber suede leather of example 3 has dry and wet rubbing fastness of grade 3.5 and light fastness of grade 3.5.
Example 4
1) Preparing 37-island polyester fixed-island microfiber non-woven fabric: the double-component 37-island fixed island fiber with the fineness of 5dtex and 70 percent PET/30 percent COPET is processed into the fixed island fiber with the gram weight of 400g/m by a needling procedure2Superfine fiber non-woven fabric;
2) impregnation of waterborne polyurethane: dipping water-washed polyurethane with solid content of 35%;
3) drying the 220% of the band liquid, dyeing at 130 ℃ and high temperature and high pressure, and selecting the disperse dye with the particle size of about 0.5 mu m;
4) carrying out alkali decrement treatment on the base cloth in the step 3): and (3) carrying out alkali decrement finishing after dyeing and water washing, reacting for 60min at 95 ℃ with the concentration of sodium hydroxide being 3%, and washing and drying to obtain the polyester microfiber suede leather.
The polyester microfiber suede leather of example 4 has dry and wet rubbing fastness of grade 4 and light fastness of grade 4.
The polyester microfiber dyeing method with high color fastness has the following advantages:
1 the invention adopts 5dtex terylene sea-island superfine fiber to replace the conventional 3.5dtex terylene sea-island superfine fiber, and selects disperse dye with the grain diameter of less than 0.5 mu m to replace large-grain-diameter disperse dye to prepare the terylene superfine fiber with high color fastness;
2 in the preparation steps, the bicomponent sea-island fiber swells in the state of high temperature, the 'sea' component COPET, dye molecules penetrate through the COPET layer and enter the 'island' component PET fiber, the swelling of the fiber is reduced in the state of low temperature, the dye molecules are sealed in the 'island' component PET fiber, and the PET outer surface is the COPET fiber, so the feasibility of adsorbing and dispersing the dye molecules on the PET outer surface is very small, and the dry-wet rubbing fastness, the color migration fastness and the like of the 'island' component PET fiber are ensured to be higher.
3, the process of dyeing firstly and then reducing is adopted, so that the problem that the inner layer of the island component PET of the bi-component fiber can be colored, the surface of the PET does not adsorb dye and loose color is solved, and all color fastness can reach more than level 4.
4 before the bi-component fiber is not opened, namely the surface of the PET fiber of the island component is dyed before being exposed, dye molecules only enter the fiber and cannot appear on the surface of the fiber, and the problem of dyeing color fastness is well guaranteed.
The above description is only for the preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all equivalent modifications made by the present invention are within the scope of the present invention.
Claims (5)
1. The method for dyeing the polyester microfiber with high color fastness is characterized by comprising the following steps of:
1) preparing the superfine fiber non-woven fabric: selecting a 16 'island', a 37 'island' or a 64 'island' with the specification of 1 dtex-6.5 dtex, wherein the components are PET/COPET or PE or PS, fixed island fibers with the mass ratio of 90: 10-50: 50 and short fibers with the length of 20-120 mm, and carrying out needling, spunlacing or needling and spunlacing to obtain the fiber with the gram weight of 20-1500 g/m2Is ultra-fineA fibrous nonwoven fabric;
2) pre-impregnating the superfine fiber non-woven fabric in the step 1): using modified PVA and CMC to adjust the viscosity to 300-5000 cp.s, adjusting the solid content to 2-30%, impregnating the tape liquid to 30-300%, and drying at the temperature of 110-150 ℃;
3) carrying out polyurethane impregnation treatment on the semi-finished product in the step 2): polyurethane is used, the viscosity is adjusted to 300-30000 cp.s, the solid content is adjusted to 5% -40%, the impregnation liquid is 30-300%, and the drying is carried out at the temperature of 90-160 ℃;
4) carrying out dyeing finishing on the semi-finished product in the step 3): directly dyeing the fibril which is not opened by adopting a disperse dye, wherein the particle size of the disperse dye is 0.3-10 mu m;
5) and (4) performing alkali decrement fiber opening treatment on the semi-finished product in the step 4).
2. The dyeing method of the terylene island-fixed microfiber with high color fastness according to claim 1, wherein 16 island, 37 island or 64 island-fixed island fiber with fineness of 1dtex to 6.5dtex is adopted in the step 1), the island component is polyester PET, the sea component is any one of modified polyester COPET, polyethylene PE and polystyrene PS, the ratio of the two components is 90: 10-50: 50, the fineness is 1dtex to 5dtex, and the length is 20mm to 120 mm.
3. The dyeing method of the polyester fixed island microfiber with high color fastness according to claim 1, wherein in the step 4), undrawn fixed island bicomponent fiber is dyed firstly and then reduced and split, the particle size of the disperse dye is selected to be 0.3-10 μm, the dyeing process is that the temperature is raised at 40-50 ℃, the temperature raising rate is 0.5-1 ℃/min, the temperature is raised to 120-140 ℃, the temperature is kept for 20-60 min, the temperature lowering rate is 2-5 ℃/min, the temperature is lowered to 50-70 ℃, waste liquid is discharged, cleaned with clear water, and the polyester fixed island microfiber is shaped and dried at 100-140 ℃ after being taken out of a cylinder.
4. The dyeing method of the polyester figured island microfiber with high color fastness according to claim 1, wherein in the step 5), the COPET (polyester) as a sea component is subjected to alkali decrement fiber opening, the process comprises the steps of adjusting the concentration of sodium hydroxide for dipping to 1% -15%, carrying out water bath reaction at the temperature of 80-100 ℃, reacting for 20-90 min, reacting the sodium hydroxide with the COPET, completely reacting the bi-component sea-island fiber to obtain the single-component PET fiber, and extracting the PE and the PS from the PE or the PS as the sea component by using toluene to carry out decrement fiber opening.
5. The dyeing method of the terylene land-fixing microfiber with high color fastness according to claim 4, wherein the reaction time of the water bath reaction is 20-90 min.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111501363A (en) * | 2020-05-12 | 2020-08-07 | 明新孟诺卡(江苏)新材料有限公司 | Preparation method of high-simulation microfiber |
| CN111607967A (en) * | 2020-05-29 | 2020-09-01 | 明新孟诺卡(江苏)新材料有限公司 | Alkali decrement method for island structure microfiber material |
| CN111704417A (en) * | 2020-07-21 | 2020-09-25 | 潘辉 | Preparation method of ultrahigh-strength concrete |
| CN111764176A (en) * | 2020-06-23 | 2020-10-13 | 明新孟诺卡(江苏)新材料有限公司 | Production method of non-dyeing sea-island suede microfiber automobile interior leather |
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| CN111704417A (en) * | 2020-07-21 | 2020-09-25 | 潘辉 | Preparation method of ultrahigh-strength concrete |
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