CN111118922A - Production process of automotive interior microfiber suede - Google Patents
Production process of automotive interior microfiber suede Download PDFInfo
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- CN111118922A CN111118922A CN201911424527.6A CN201911424527A CN111118922A CN 111118922 A CN111118922 A CN 111118922A CN 201911424527 A CN201911424527 A CN 201911424527A CN 111118922 A CN111118922 A CN 111118922A
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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
- D06P1/18—Azo dyes
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G63/00—Macromolecular compounds obtained by reactions forming a carboxylic ester link in the main chain of the macromolecule
- C08G63/91—Polymers modified by chemical after-treatment
- C08G63/914—Polymers modified by chemical after-treatment derived from polycarboxylic acids and polyhydroxy compounds
- C08G63/916—Dicarboxylic acids and dihydroxy compounds
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F6/00—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof
- D01F6/78—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from copolycondensation products
- D01F6/86—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from copolycondensation products from polyetheresters
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- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
- D06N3/0002—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the substrate
- D06N3/0004—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the substrate using ultra-fine two-component fibres, e.g. island/sea, or ultra-fine one component fibres (< 1 denier)
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- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
- D06N3/0002—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the substrate
- D06N3/0013—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the substrate using multilayer webs
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- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
- D06N3/007—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by mechanical or physical treatments
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- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
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- D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
- D06N3/007—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by mechanical or physical treatments
- D06N3/0075—Napping, teasing, raising or abrading of the resin coating
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- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
- D06N3/12—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. gelatine proteins
- D06N3/14—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. gelatine proteins with polyurethanes
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- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
- D06P1/00—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed
- D06P1/44—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed using insoluble pigments or auxiliary substances, e.g. binders
- D06P1/60—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
- D06P1/6131—Addition products of hydroxyl groups-containing compounds with oxiranes
- D06P1/6133—Addition products of hydroxyl groups-containing compounds with oxiranes from araliphatic or aliphatic alcohols
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- 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
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- 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
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- 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
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- D06P5/02—After-treatment
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Abstract
The invention discloses a production process of automotive interior microfiber suede, which comprises the following steps of preparing superfine fibers; step two, obtaining spunlace non-woven fabrics; step three, polishing treatment; step four, obtaining the microfiber suede fabric; step five, dyeing is carried out; and sixthly, manufacturing the complex pattern fabric with multi-process combination. According to the invention, through modifying the superfine polyester fiber, the Van der Waals force of active groups and disperse dyes on the surface of the polyester fiber is improved, the one-step method for dyeing the microfiber suede leather can be realized, the process flow is simplified, the deep color yield of the microfiber suede leather is greatly improved, and the defects of low light fastness and low rubbing fastness of the microfiber are effectively reduced.
Description
Technical Field
The invention relates to a production process, in particular to a production process of automotive interior microfiber suede, and belongs to the technical field of automotive interiors.
Background
The microfiber suede leather is a composite material of superfine fibers and PU elastomers, has a structure close to that of natural suede leather, is fine in fabric hand feeling, excellent in air permeability, moisture permeability and compression elasticity, and is superior to natural suede leather in mechanical strength, acid and alkali resistance, water resistance, oil resistance and weather resistance. In recent years, under the influence of various aspects of resource and environmental factors, the development of animal genuine leather is gradually limited, so that the substitute of the leather fabric is gradually replaced by superfine fiber synthetic leather with excellent performance, and the leather is widely applied to the fields of clothes, home textiles, case materials, lamp decoration materials and the like.
In order to enable the appearance of the microfiber leather fabric to be more attractive and meet the requirements of customers on the integral patterns and the individualized colors of the leather surface, the microfiber leather surface has the suede effect by surface treatment of the microfiber fabric, and meanwhile, the complex pattern is designed by the perforation, quilting and laser integrated processing technology to meet the requirements of customers.
Because the superfine fiber has small fineness and large specific surface area, the dyeing process needs multi-purpose dye to achieve the dyeing effect of the conventional polyester fiber, the polyester and polyurethane have different dye adsorption capacities, the one-bath dyeing easily generates a layer difference effect, the polyester has poor dye adsorption effect, and the polyurethane has good adsorption effect; meanwhile, the huge specific surface area of the superfine fiber increases the exposure of the fiber, and can absorb a large amount of ultraviolet rays, so that the color system of the dye is damaged, and the dye is decomposed and faded, and the light fastness of the dye is low. In order to dye deep-color microfiber suede, researchers can obtain deep color of microfiber leather by separating superfine fibers from polyurethane dyeing, but the process is complex, and a large amount of microfiber dyes are adsorbed on the surfaces of the fibers and are not transferred to the inside of the fibers, so that the light fastness and the wet rubbing fastness are poor.
Disclosure of Invention
In order to solve the defects of the technology, the invention provides a production process of automotive interior microfiber suede.
In order to solve the technical problems, the invention adopts the technical scheme that: a production process of automotive interior microfiber suede comprises the following steps:
step one, adopting a melt-blown spinning process, melting the recycled polyester material, adding diethylene glycol into a polymer solution, and performing spray forming from a tiny spinneret orifice below a melt-blown spinning machine to prepare superfine fibers;
secondly, carding and lapping the superfine fibers prepared in the first step, and spraying high-pressure superfine water flow to the superfine fiber mesh on the front and back sides of a woven or warp-knitted base fabric to enable the superfine fibers and the base fabric to be mutually interpenetrated through pores for reinforcement to obtain a spunlace non-woven fabric with a three-layer structure;
polishing the spunlace non-woven fabric obtained in the step two by a calender;
step four, taking the spunlace non-woven fabric polished in the step three as base cloth, dipping the base cloth by using waterborne polyurethane, and obtaining the microfiber suede fabric after water is volatilized;
step five, dyeing the microfiber suede fabric obtained in the step four, and adding a flame retardant, a high-temperature leveling agent, a pH regulator and a high-light-resistance dye into the dyeing to obtain the microfiber suede fabric with good flame-retardant effect, uniform color and light resistance;
and step six, manufacturing the microfiber suede fabric in the step five into a multi-process combined complex pattern fabric by adopting a quilting, punching and laser integrated machine.
Further, the specific steps for preparing the superfine fiber in the step one are as follows: after the recovered polyester material is melted at the temperature of 280-320 ℃, 0.1-0.6 percent of esterification catalyst is added into the polymer solution for heat preservation for 1-1.5h, then 5-20 percent of diethylene glycol and 0.04-0.1 percent of esterification catalyst are added for reaction for 0.5-2h, after the reaction, the polymer is extruded by a spinneret plate below a melt-blown spinning machine, and then the superfine fiber with the fineness of 1-5 mu m is obtained by stretching by 1000 times of 100-fold.
Further, in the step one, the esterification catalyst is aluminum trichloride; the esterification catalyst is tetraisopropyl titanate.
Further, the pressure of the high-pressure fine water flow in the second step is 10X 105Pa to 200X 105Pa, and the spraying distance is 10 mm to 80 mm.
Further, the polishing treatment in the third step comprises the following specific steps: rolling with hard metal roller and soft plastic roller at 60-70 deg.c to maintain the water content in the spun-laced non-woven fabric at 5-10%.
Further, in the fifth step, the specific dyeing step of the superfine fiber suede fabric is as follows: placing the superfine fiber suede fabric into a dye vat, washing for 20-40min, adding a high-light-resistance dye, a high-temperature leveling agent, a pH regulator and a flame retardant into the dye vat, heating to 130 +/-5 ℃, reacting at a constant temperature, cooling after the reaction is finished, reducing and washing for 1 time after the temperature is reduced to 85 +/-5 ℃, washing for 1 time with hot water, washing for 1 time with cold water, softening, dehydrating, taking out of the vat, and shaping.
Further, in the fifth step, the high light-resistant dye is an azo disperse dye, which comprises monoazo, disazo and heterocyclic azo dyes, and one or two of the dyes are compounded for use.
Further, in the fifth step, the high-temperature leveling agent is fatty alcohol-polyoxyethylene ether, and the using amount is 1-5 g/L; the fire retardant is cyclopolyphosphate RX-1780 with the dosage of 1-3 g/L; the pH regulator is glacial acetic acid, and the pH of the dyeing after regulation is 5-6.
Further, the reduction cleaning process in the fifth step is as follows: adding 4-8g/L of caustic soda with Baume degree of 360 and 0.5-6g/L of sodium hydrosulfite into a dye vat, and washing with water at 60-90 ℃ for 40 min.
Further, the multi-process combined complex pattern in the sixth step means that a designer designs a pattern, then inputs the pattern through a computer, and the quilting and punching integrated machine completes the processing of the combined pattern of punching, carving and quilting.
According to the invention, through modification treatment of the polyester superfine fiber, Van der Waals force between active groups on the surface of the polyester fiber and the disperse dye is improved, one-step dyeing of the microfiber suede can be realized, the process flow is simplified, the color yield of deep color dyeing of the microfiber leather is greatly improved, and the polyester superfine fiber has the advantages of good dyeing property, capability of improving the dyeing fastness of the disperse dye and the like; in addition, the one-step dyeing saves the separate dyeing of polyurethane, greatly eliminates the waste of dyeing chemicals, can obtain the dyed microfiber leather with excellent color fastness, effectively eliminates the defects of light fastness and low rubbing fastness of the microfiber, and accords with the principles of green chemistry and advocating clean production. In addition, the method is simple to operate, low in cost, high in efficiency and capable of realizing large-scale production, the disperse dye is transferred into the PET fibers, the light fastness and the wet rubbing fastness are improved, and the method can be widely applied to various automobile interior microfiber suede production processes.
Drawings
FIG. 1 is a basic chemical reaction equation for chemical modification of the polyester microfiber of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
The production process of the automotive interior microfiber suede as shown in fig. 1 comprises the following steps:
step one, adopting a melt-blown spinning process, melting the recycled polyester material, adding diethylene glycol into a polymer solution, and performing spray forming from a tiny spinneret orifice below a melt-blown spinning machine to prepare superfine fibers;
the method for preparing the superfine fiber comprises the following specific steps: after the recovered polyester material is melted at the temperature of 280-320 ℃, 0.1-0.6 percent of esterification catalyst is added into the polymer solution for heat preservation for 1-1.5h, then 5-20 percent of diethylene glycol and 0.04-0.1 percent of esterification catalyst are added for reaction for 0.5-2h, after the reaction, the polymer is extruded by a spinneret plate below a melt-blown spinning machine, and then the superfine fiber with the fineness of 1-5 mu m is obtained by stretching by 1000 times of 100-fold. Wherein the esterification catalyst is aluminum trichloride; the esterification catalyst is tetraisopropyl titanate.
The modification of the superfine polyester fiber is carried out in the step one, and the recycled polyester material adopted for modification is polyester slices, which are derived from waste PET crushed materials such as waste plastic bags, plastic bottles, non-woven fabrics and the like. Melting the recycled polyester material at 280-320 ℃, adding 0.15% of aluminum trichloride into the polymer solution, keeping the temperature for 1h, then adding 5-20% of diethylene glycol and 0.04-0.1% of tetraisopropyl titanate, reacting for 0.5-2h, performing ejection forming through a tiny spinneret orifice below a melt-blown spinning machine, and performing air cooling and stretching to obtain superfine PET fibers;
the diethylene glycol modified superfine PET fiber has good hygroscopicity and chain segment flexibility, so that after the PET fiber is copolymerized with the diethylene glycol, ether bonds in the PET fiber and hydroxyl groups in disperse dyes have good van der Waals force, the dyeability of the PET fiber is improved, and the introduction of the third component polyether can realize high dye uptake at normal temperature and normal pressure and has a good color fastness effect.
The principle of polyester modification is as follows: as shown in figure 1, through carrying out modification treatment on the polyester superfine fiber, a polyether flexible chain segment is introduced into a polyester molecular structure, the regularity of arrangement of the polyester macromolecular chain segment is damaged, the polyester macromolecular structure is loosened, the crystallization process of the polyester is influenced, an amorphous area is increased, disperse dyes easily enter the interior of the polyester molecular structure and can be well combined with a polyester surface active dye base, meanwhile, Van der Waals force of hydrogen atoms in-OH on the surface of the disperse dyes is enhanced due to the introduction of an ether bond, the dyeing dye uptake of the polyester is high, the color fastness effect is good, and the dyeing performance of the superfine fiber leather is improved through the structurally modified polyester superfine fiber.
Secondly, carding and lapping the superfine fibers prepared in the first step, and spraying high-pressure superfine water flow to the superfine fiber mesh on the front and back sides of a woven or warp-knitted base fabric to enable the superfine fibers and the base fabric to be mutually interpenetrated through pores for reinforcement to obtain a spunlace non-woven fabric with a three-layer structure; wherein the pressure of the high-pressure fine water flow is 10 multiplied by 105Pa to 200 multiplied by 105Pa, and the spraying distance is 10 mm to 80 mm.
Polishing the spunlace non-woven fabric obtained in the step two by a calender; the polishing treatment comprises the following specific steps: rolling with hard metal roller and soft plastic roller at 60-70 deg.c to maintain the water content in the spun-laced non-woven fabric at 5-10%.
Step four, taking the spunlace non-woven fabric polished in the step three as base cloth, dipping the base cloth by using waterborne polyurethane, and obtaining the microfiber suede fabric after water is volatilized;
step five, dyeing the microfiber suede fabric obtained in the step four, and adding a flame retardant, a high-temperature leveling agent, a pH regulator and a high-light-resistance dye into the dyeing to obtain the microfiber suede fabric with good flame-retardant effect, uniform color and light resistance;
in the fifth step, the specific dyeing steps of the superfine fiber suede fabric are as follows: placing the superfine fiber suede fabric into a dye vat, washing for 20-40min, adding a high-light-resistance dye, a high-temperature leveling agent, a pH regulator and a flame retardant into the dye vat, heating to 130 +/-5 ℃, reacting at a constant temperature, cooling after the reaction is finished, reducing and washing for 1 time after the temperature is reduced to 85 +/-5 ℃, washing for 1 time with hot water, washing for 1 time with cold water, softening, dehydrating, taking out of the vat, and shaping.
The reduction cleaning process comprises the following steps: adding 4-8g/L of caustic soda with Baume degree of 360 and 0.5-6g/L of sodium hydrosulfite into a dye vat, and washing with water at 60-90 ℃ for 40 min.
The high light-resistant dye is azo disperse dye, including monoazo, disazo and heterocyclic azo dye, and one or two of the dyes are compounded for use. The high-temperature leveling agent is fatty alcohol-polyoxyethylene ether, and the using amount is 1-5 g/L; the fire retardant is cyclopolyphosphate RX-1780 with the dosage of 1-3 g/L; the pH regulator is glacial acetic acid, and the pH of the dyeing after regulation is 5-6.
And step six, manufacturing the microfiber suede fabric in the step five into a multi-process combined complex pattern fabric by adopting a quilting, punching and laser integrated machine. The multi-process combined complex pattern means that a designer designs a pattern, then inputs the pattern through a computer, and a quilting, perforating and laser integrated machine completes the processing of the combined pattern of perforating, carving and quilting.
The quilting, perforating and laser integrated machine is a simple machining device, and patterns are input through a computer to carry out integrated operations of perforating, carving and quilting. At present, equipment on the market can only carry out single punching, carving and quilting processing, and the equipment can complete the processing of punching, carving and quilting combined patterns, and is simple to operate and high in added value.
The quilting and punching laser integrated machine combines three types of pattern processing equipment of punching, carving and quilting, and can realize three types of pattern design processes on the same pattern at one time through one type of pattern design program. Due to the complexity of pattern design, in order to highlight the light and shadow effects of three types of patterns, the requirements on the color yield and uniformity of the suede-like fabric in design are very high, diethylene glycol is added into a polyester molecule for chemical modification, and a polyether flexible chain segment is introduced into the polyester molecular structure, so that the polyester macromolecular structure becomes loose, an amorphous area is increased, a disperse dye easily enters the polyester molecular structure, the affinity of the polyester for the disperse dye is improved, and the color yield and uniformity of dyeing of the suede-like fabric are effectively ensured.
The present invention will be described in further detail with reference to examples.
The first embodiment is as follows:
(1) modification treatment of polyester superfine fiber
Melting 100g of recycled polyester material (waste PET crushed material such as waste plastic bottles, non-woven fabrics and the like) at 280 ℃, adding 0.1g of aluminum trichloride into a polymer solution, preserving heat for 1h, then adding a certain amount of diethylene glycol and 0.1g of tetraisopropyl titanate, reacting for 1.5h, extruding the polymer after the reaction through a spinneret plate below a melt-blown spinning machine, and stretching by 1000 times through 100 times of dope to obtain the microfiber fiber with the fineness of 1-5 mu m. Under the condition of not changing other parameters, parallel tests are carried out, 5g of diethylene glycol, 10g of diethylene glycol, 15g of diethylene glycol and 20g of diethylene glycol are respectively added, and the optimal modification condition is found out by changing the using amount of the diethylene glycol.
(2) Preparation of microfiber suede fabric
Preparing the superfine fiber suede fabric in the step (1) into a non-woven fabric by adopting a spunlace process, and polishing by a calender. And (3) dipping the polished non-woven fabric into an aqueous polyurethane solution, and volatilizing the solution to obtain the microfiber suede fabric.
(3) Dyeing of microfiber suede fabric
Placing the superfine fiber suede fabric into a dye vat, washing for 20min, adding disperse red, fatty alcohol-polyoxyethylene ether 1g/L, glacial acetic acid and cyclopolyphosphate RX-17801 g/L into the dye vat, heating to 130 +/-5 ℃, reacting at constant temperature, cooling after the reaction is finished, reducing and cleaning 1 time after the temperature is reduced to 85 +/-5 ℃, washing 1 time with hot water, washing 1 time with cold water, softening, dehydrating, taking out of the dye vat, and sizing.
Different microfiber suede fabrics can be obtained by changing the dosage of diethylene glycol. Table 1 shows a comparison table of dyeing properties of disperse dyes after polyester fibers are modified under different amounts of diethylene glycol, and it can be seen from Table 1 that after the polyester fibers are modified, the light fastness is improved by 1-2 levels compared with that before the polyester fibers are modified, and the wet rubbing fastness is improved by 1-2 levels compared with that before the polyester fibers are modified.
TABLE 1 comparison table of dyeing properties of modified disperse dyes with different amounts of diethylene glycol for polyester fiber
Example two:
(1) modification treatment of polyester superfine fiber
Melting 100g of recycled polyester material (waste PET fiber crushed material such as waste plastic bottles, non-woven fabrics and the like) at 300 ℃, adding 0.15g of aluminum trichloride into a polymer solution, keeping the temperature for 1h, then adding 15g of diethylene glycol and 0.1g of tetraisopropyl titanate, reacting for a period of time t, extruding the polymer after reaction through a spinneret plate below a melt-blown spinning machine, and stretching by 1000 times through 100-fold, wherein the fineness of the obtained microfiber fiber is 1-5 mu m. Under the condition of not changing other parameters, parallel tests are carried out, the reaction time is respectively controlled to be 0.5h, 1h, 1.5h and 2h, and the optimal modification condition is found out by changing the reaction time.
(2) Preparation of microfiber suede fabric
Preparing the superfine fiber suede fabric in the step (1) into a non-woven fabric by adopting a spunlace process, and polishing by a calender. And (3) dipping the polished non-woven fabric into an aqueous polyurethane solution, and volatilizing the solution to obtain the microfiber suede fabric.
(3) Dyeing of microfiber suede fabric
Placing the superfine fiber suede fabric into a dye vat, washing for 30min, adding disperse red, fatty alcohol-polyoxyethylene ether 3g/L, glacial acetic acid and cyclopolyphosphate RX-17802 g/L into the dye vat, heating to 130 +/-5 ℃, reacting at constant temperature, cooling after the reaction is finished, reducing and cleaning 1 time after the temperature is reduced to 85 +/-5 ℃, washing 1 time with hot water, washing 1 time with cold water, softening, dehydrating, taking out of the dye vat, and sizing.
By changing the modification reaction time, different microfiber suede fabrics are obtained, and the table 2 is a disperse dye dyeing performance comparison table after polyester fibers are modified under different reaction time conditions, and as can be seen from the table 2, after the polyester fibers are modified, the light fastness is improved by 1-2 levels compared with that before the polyester fibers are modified, and the wet rubbing fastness is improved by 1-2 levels compared with that before the polyester fibers are modified.
TABLE 2 comparison table of disperse dye dyeing property of modified polyester fiber under different modification conditions
Example three:
(1) modification treatment of ultrafine nylon fiber
Melting 100g of recycled polyester material (waste PET fiber crushed material such as waste plastic bottles, non-woven fabrics and the like) at 320 ℃, adding 0.6g of aluminum trichloride into the polymer solution, keeping the temperature for 1.5h, then adding 15g of diethylene glycol and a certain amount of tetraisopropyl titanate, reacting for 1.5h, extruding the polymer after the reaction through a spinneret plate below a melt-blown spinning machine, and stretching by 1000 times of 100 times to obtain the microfiber fiber with the fineness of 1 mu m-5 mu m. Under the condition of not changing other parameters, a parallel test is carried out, 0.04g, 0.06g, 0.08g and 0.1g of tetraisopropyl titanate are respectively added, and the optimal modification condition is found out by changing the dosage of the tetraisopropyl titanate.
(2) Preparation of microfiber suede fabric
Preparing the superfine fiber suede fabric in the step (1) into a non-woven fabric by adopting a spunlace process, and polishing by a calender. And (3) dipping the polished non-woven fabric into an aqueous polyurethane solution, and volatilizing the solution to obtain the microfiber suede fabric.
(3) Dyeing of microfiber suede fabric
Placing the superfine fiber suede fabric into a dye vat, washing for 40min, adding disperse red, fatty alcohol-polyoxyethylene ether 5g/L, glacial acetic acid and cyclopolyphosphate RX-17803 g/L into the dye vat, heating to 130 +/-5 ℃, reacting at a constant temperature, cooling after the reaction is finished, reducing and cleaning 1 time after the temperature is reduced to 85 +/-5 ℃, washing 1 time with hot water, washing 1 time with cold water, softening, dehydrating, taking out of the dye vat, and shaping.
Different microfiber suede fabrics are obtained by changing the amount of tetraisopropyl titanate serving as an esterification catalyst, and table 3 is a disperse dye dyeing performance comparison table after polyester fibers are modified under different amounts of tetraisopropyl titanate, as can be seen from table 3, after the polyester fibers are modified, the light fastness is improved by 1-2 levels compared with that before the polyester fibers are modified, and the wet rubbing fastness is improved by 1-2 levels compared with that before the polyester fibers are modified.
TABLE 3 comparison table of disperse dye dyeing property of modified polyester fiber under different modification conditions
The above embodiments are not intended to limit the present invention, and the present invention is not limited to the above examples, and those skilled in the art may make variations, modifications, additions or substitutions within the technical scope of the present invention.
Claims (10)
1. A production process of automotive interior microfiber suede leather is characterized by comprising the following steps: the method comprises the following steps:
step one, adopting a melt-blown spinning process, melting the recycled polyester material, adding diethylene glycol into a polymer solution, and performing spray forming from a tiny spinneret orifice below a melt-blown spinning machine to prepare superfine fibers;
secondly, carding and lapping the superfine fibers prepared in the first step, and spraying high-pressure superfine water flow to the superfine fiber mesh on the front and back sides of a woven or warp-knitted base fabric to enable the superfine fibers and the base fabric to be mutually interpenetrated through pores for reinforcement to obtain a spunlace non-woven fabric with a three-layer structure;
polishing the spunlace non-woven fabric obtained in the step two by a calender;
step four, taking the spunlace non-woven fabric polished in the step three as base cloth, dipping the base cloth by using waterborne polyurethane, and obtaining the microfiber suede fabric after water is volatilized;
step five, dyeing the microfiber suede fabric obtained in the step four, and adding a flame retardant, a high-temperature leveling agent, a pH regulator and a high-light-resistance dye into the dyeing to obtain the microfiber suede fabric with good flame-retardant effect, uniform color and light resistance;
and step six, manufacturing the microfiber suede fabric in the step five into a multi-process combined complex pattern fabric by adopting a quilting, punching and laser integrated machine.
2. The process for producing an automotive interior microfiber suede according to claim 1, wherein: the preparation method of the superfine fiber in the first step comprises the following specific steps: after the recovered polyester material is melted at the temperature of 280-320 ℃, 0.1-0.6 percent of esterification catalyst is added into the polymer solution for heat preservation for 1-1.5h, then 5-20 percent of diethylene glycol and 0.04-0.1 percent of esterification catalyst are added for reaction for 0.5-2h, after the reaction, the polymer is extruded by a spinneret plate below a melt-blown spinning machine, and then the superfine fiber with the fineness of 1-5 mu m is obtained by stretching by 1000 times of 100-fold.
3. The process for producing an automotive interior microfiber suede according to claim 2, wherein: the catalyst for the ester decomposition in the first step is aluminum trichloride; the esterification catalyst is tetratetrandrine titanate.
4. The process for producing an automotive interior microfiber suede according to claim 1, wherein: the pressure of the high-pressure fine water flow in the step two is 10 multiplied by 105Pa～200×105Pa, and the spraying distance is 10-80 mm.
5. The process for producing an automotive interior microfiber suede according to claim 1, wherein: the polishing treatment in the third step comprises the following specific steps: rolling with hard metal roller and soft plastic roller at 60-70 deg.c to maintain the water content in the spun-laced non-woven fabric at 5-10%.
6. The process for producing an automotive interior microfiber suede according to claim 1, wherein: in the fifth step, the specific dyeing steps of the superfine fiber suede fabric are as follows: placing the superfine fiber suede fabric into a dye vat, washing for 20-40min, adding a high-light-resistance dye, a high-temperature leveling agent, a pH regulator and a flame retardant into the dye vat, heating to 130 +/-5 ℃, reacting at a constant temperature, cooling after the reaction is finished, reducing and washing for 1 time after the temperature is reduced to 85 +/-5 ℃, washing for 1 time with hot water, washing for 1 time with cold water, softening, dehydrating, taking out of the vat, and shaping.
7. The process for producing an automotive interior microfiber suede according to claim 6, wherein: and in the fifth step, the high-light-resistant dye is azo disperse dye which comprises monoazo, disazo and heterocyclic azo dye, and one or two of the azo dye is compounded for use.
8. The process for producing an automotive interior microfiber suede according to claim 7, wherein: the high-temperature leveling agent in the fifth step is fatty alcohol-polyoxyethylene ether, and the using amount of the high-temperature leveling agent is 1-5 g/L; the flame retardant is cyclopolyphosphate RX-1780, and the dosage is 1-3 g/L; the pH regulator is glacial acetic acid, and the adjusted dyeing pH is 5-6.
9. The process for producing an automotive interior microfiber suede according to claim 8, wherein: the reduction cleaning process in the fifth step comprises the following steps: adding 4-8g/L of caustic soda with Baume degree of 360 and 0.5-6g/L of sodium hydrosulfite into a dye vat, and washing with water at 60-90 ℃ for 40 min.
10. The process for producing an automotive interior microfiber suede according to any one of claims 1 to 9, wherein: and the multi-process combined complex pattern in the sixth step means that a designer designs a pattern, then inputs the pattern through a computer, and the quilting-perforating laser integrated machine completes the processing of perforating, carving and quilting combined patterns.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111572137A (en) * | 2020-05-27 | 2020-08-25 | 临沂昱洁新材料有限公司 | Preparation method of environment-friendly automotive interior base fabric |
| CN111926581A (en) * | 2020-08-03 | 2020-11-13 | 安安(中国)有限公司 | Benzene reduction aqueous impregnation superfine fiber synthetic leather and processing method thereof |
| CN113796595A (en) * | 2021-08-31 | 2021-12-17 | 尹效祥 | Fence-row laser crochet clothes |
| CN115094635A (en) * | 2022-06-28 | 2022-09-23 | 东风汽车集团股份有限公司 | Noctilucent suede material and preparation method and application thereof |
| CN118029179A (en) * | 2024-04-12 | 2024-05-14 | 浙江梅盛新材料有限公司 | Dyeing process capable of recycling dye liquor of polyester superfine fiber suede leather |
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2019
- 2019-12-31 CN CN201911424527.6A patent/CN111118922A/en not_active Withdrawn
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111572137A (en) * | 2020-05-27 | 2020-08-25 | 临沂昱洁新材料有限公司 | Preparation method of environment-friendly automotive interior base fabric |
| CN111926581A (en) * | 2020-08-03 | 2020-11-13 | 安安(中国)有限公司 | Benzene reduction aqueous impregnation superfine fiber synthetic leather and processing method thereof |
| CN113796595A (en) * | 2021-08-31 | 2021-12-17 | 尹效祥 | Fence-row laser crochet clothes |
| CN115094635A (en) * | 2022-06-28 | 2022-09-23 | 东风汽车集团股份有限公司 | Noctilucent suede material and preparation method and application thereof |
| CN118029179A (en) * | 2024-04-12 | 2024-05-14 | 浙江梅盛新材料有限公司 | Dyeing process capable of recycling dye liquor of polyester superfine fiber suede leather |
| CN118029179B (en) * | 2024-04-12 | 2024-07-23 | 浙江梅盛新材料有限公司 | Dyeing process capable of recycling dye liquor of polyester superfine fiber suede leather |
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