CN110219180B - Processing technology of base cloth of superfine fiber synthetic leather - Google Patents

Processing technology of base cloth of superfine fiber synthetic leather Download PDF

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CN110219180B
CN110219180B CN201910567968.5A CN201910567968A CN110219180B CN 110219180 B CN110219180 B CN 110219180B CN 201910567968 A CN201910567968 A CN 201910567968A CN 110219180 B CN110219180 B CN 110219180B
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parts
treatment
woven fabric
coating
polyurethane resin
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CN110219180A (en
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郑宁舟
冉斌
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Zhejiang Yongxiang Synthetic Material Co ltd
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Zhejiang Yongxiang Synthetic Material Co ltd
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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
    • D06M13/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment
    • D06M13/10—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with compounds containing oxygen
    • D06M13/184—Carboxylic acids; Anhydrides, halides or salts thereof
    • D06M13/188—Monocarboxylic acids; Anhydrides, halides or salts thereof
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    • 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
    • D06M13/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment
    • D06M13/10—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with compounds containing oxygen
    • D06M13/224—Esters of carboxylic acids; Esters of carbonic acid
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    • D06M13/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment
    • D06M13/244—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with compounds containing sulfur or phosphorus
    • D06M13/248—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with compounds containing sulfur or phosphorus with compounds containing sulfur
    • D06M13/256—Sulfonated compounds esters thereof, e.g. sultones
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    • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M13/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment
    • D06M13/322—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with compounds containing nitrogen
    • D06M13/46—Compounds containing quaternary nitrogen atoms
    • D06M13/463—Compounds containing quaternary nitrogen atoms derived from monoamines
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    • D06M13/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment
    • D06M13/50—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with organometallic compounds; with organic compounds containing boron, silicon, selenium or tellurium atoms
    • D06M13/51—Compounds with at least one carbon-metal or carbon-boron, carbon-silicon, carbon-selenium, or carbon-tellurium bond
    • D06M13/513—Compounds with at least one carbon-metal or carbon-boron, carbon-silicon, carbon-selenium, or carbon-tellurium bond with at least one carbon-silicon bond
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    • 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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    • 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
    • D06N3/0056—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the compounding ingredients of the macro-molecular coating
    • D06N3/0061—Organic fillers or organic fibrous fillers, e.g. ground leather waste, wood bark, cork powder, vegetable flour; Other organic compounding ingredients; Post-treatment with organic compounds
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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
    • D06N3/0056—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the compounding ingredients of the macro-molecular coating
    • D06N3/0063—Inorganic compounding ingredients, e.g. metals, carbon fibres, Na2CO3, metal layers; Post-treatment with inorganic compounds
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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
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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
    • D06N3/12—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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    • D06N2209/00—Properties of the materials
    • D06N2209/04—Properties of the materials having electrical or magnetic properties
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    • D06N2211/00—Specially adapted uses
    • D06N2211/12—Decorative or sun protection articles
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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Dispersion Chemistry (AREA)
  • Organic Chemistry (AREA)
  • Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
  • Synthetic Leather, Interior Materials Or Flexible Sheet Materials (AREA)

Abstract

The invention relates to the technical field of preparation methods of superfine fiber synthetic leather, and discloses a base cloth processing technology of superfine fiber synthetic leather, which comprises the following steps of treating non-woven cloth; s1: dipping treatment; conveying the non-woven fabric into an impregnating solution for impregnation, wherein the impregnating solution comprises the following chemical components in parts by weight: 80-120 parts of polyurethane resin, 60-90 parts of DMF (dimethyl formamide), 1-3 parts of a solidification regulator, 15-25 parts of sodium dodecyl benzene sulfonate and 10-16 parts of aminopropyltriethoxysilane; s2: coating treatment; s3: carrying out solidification water washing treatment; after S3, the base fabric is finished. Polyurethane resin on the non-woven fabric is prevented from settling, so that the foaming states of the polyurethane resin on the front surface and the back surface of the non-woven fabric are consistent, the subsequent processing of the base fabric is facilitated, and the base fabric is convenient to dye.

Description

Processing technology of base cloth of superfine fiber synthetic leather
Technical Field
The invention relates to the technical field of preparation methods of superfine fiber synthetic leather, in particular to a base cloth processing technology of superfine fiber synthetic leather.
Background
The superfine fiber synthetic leather is one of important application products of superfine fibers, has the characteristics of high physical property and strong imitation leather property, is widely applied to industries such as clothes, shoes, cases, furniture and the like, and occupies an important position in production and life of people. The nonwoven fabric mentioned in the national standard was used as the base fabric, and then the base fabric was subjected to the base fabric processing procedure. The main purpose of the base fabric processing procedure is to form a solid film with a certain structure on the gaps of the base fabric fibers by the liquid polyurethane resin, so that the base fabric structure is integrated, and the base fabric is endowed with good hand feeling, elasticity and physical and chemical properties. And then, carrying out decrement separation on the base cloth, so that the base cloth forms the superfine fiber base cloth from the non-woven base cloth. Finally, the superfine fiber base cloth is required to be finished and modified, the color and the pattern are endowed to the surface, and the requirements of appearance and internal use performance are met. The method mainly comprises the processing technologies of surface film transfer, printing, embossing, dyeing, finishing and the like.
When the polyurethane is used for soaking the non-woven fabric, the polyurethane is in a liquid state, a period of time interval exists between the completion of the soaking of the non-woven fabric and solidification of the non-woven fabric, and at the moment, a part of polyurethane can be settled, so that the polyurethane on the front side and the back side of the non-woven fabric are different in distribution and foaming state, and the foaming is not uniform, so that the non-woven fabric after subsequent treatment is difficult to dye, and the difficulty in after-finishing after the non-woven fabric is processed into superfine fibers is increased.
Disclosure of Invention
The invention aims to provide a base cloth processing technology of superfine fiber synthetic leather, which prevents polyurethane resin on non-woven cloth from settling, enables the foaming states of the polyurethane resin on the front surface and the back surface of the non-woven cloth to be consistent, facilitates subsequent processing of the base cloth and facilitates dyeing of the base cloth.
The technical purpose of the invention is realized by the following technical scheme:
a processing technology of base cloth of superfine fiber synthetic leather comprises the following steps of treating non-woven cloth;
s1: dipping treatment; conveying the non-woven fabric into an impregnating solution for impregnation, wherein the impregnating solution comprises the following chemical components in parts by weight: 80-120 parts of polyurethane resin, 60-90 parts of DMF (dimethyl formamide), 1-3 parts of a solidification regulator, 15-25 parts of sodium dodecyl benzene sulfonate and 10-16 parts of aminopropyltriethoxysilane;
s2: coating treatment;
s3: carrying out solidification water washing treatment;
after S3, the base fabric is finished.
The cloth is soaked to make the soaking liquid distributed homogeneously and fully in the gaps of the non-woven fabric, so as to form continuous resin film in the fiber gaps, integrate the base fabric structure and endow the non-woven fabric with excellent hand feeling. DMF is used as a solvent, so that the polyurethane resin can be well dissolved, sodium dodecyl benzene sulfonate and aminopropyltriethoxysilane are added into the impregnation liquid, the dispersing effect of the polyurethane resin can be better, and the polyurethane resin molecules can be prevented from being combined with each other in a short time, so that the polyurethane resin is prevented from settling. Meanwhile, the sodium dodecyl benzene sulfonate and the aminopropyltriethoxysilane can enable the polyurethane resin to be dispersed more uniformly, so that the foaming states of the polyurethane resin on the front surface and the back surface of the non-woven fabric are kept consistent, the subsequent processing of the base fabric is facilitated, and the base fabric is convenient to dye.
As a further improvement of the invention, the impregnating solution comprises the following chemical compositions in parts by weight: 80-120 parts of polyurethane resin, 60-90 parts of DMF (dimethyl formamide), 1-3 parts of a solidification regulator, 15-25 parts of sodium dodecyl benzene sulfonate, 10-16 parts of aminopropyltriethoxysilane and 3-6 parts of ammonium benzoate.
By adopting the technical scheme, the ammonium benzoate is added into the impregnation liquid, so that the dispersibility of the sodium dodecyl benzene sulfonate and the aminopropyltriethoxysilane to the polyurethane resin is promoted to be stronger, and the aminopropyltriethoxysilane has a solubilizing effect on the impregnation liquid. The oxysilane in the aminopropyltriethoxysilane belongs to a hydrophobic group, can play a role in 'interface orientation', and is favorable for foaming and foam stabilization. And aminopropyl groups belong to hydrophilic groups, so that the surface tension between liquid surfaces can be reduced.
As a further improvement of the present invention, the S1 impregnation treatment includes the following steps:
a1: firstly, adding DMF (dimethyl formamide) into a stirring kettle according to the weight parts, starting stirring the stirring kettle for 15-20min, and controlling the temperature in the stirring kettle to be 45-60 ℃;
a2: adding the solidification regulator, sodium dodecyl benzene sulfonate, aminopropyltriethoxysilane and ammonium benzoate into the stirring kettle treated by A1 in the parts by weight in no sequence, stirring for 10min, heating the temperature in the stirring kettle to 65 ℃, and stirring for 10 min;
a3: adding the polyurethane resin into the stirring kettle treated by the A2 according to the weight part, reducing the temperature in the stirring kettle to 40 ℃, and stirring for 50-70 min;
a4: transferring the impregnation liquid after the A3 treatment to an impregnator, and then inputting the non-woven fabric into the impregnator for repeated impregnation;
after the treatment by a4, the S1 immersion treatment was ended.
Through adopting above-mentioned technical scheme, add DMF to the stirred tank earlier to temperature with in the stirred tank improves slightly, can make the DMF can be more quick stirring, makes the DMF concentration homogeneity of each part. Then, the solidification regulator, sodium dodecyl benzene sulfonate, aminopropyl triethoxysilane and ammonium benzoate are added to DMF in a non-sequential manner, and the mixture is continuously stirred for 10min, so that the substances can be thoroughly dispersed in the system. The temperature in the stirred tank was then slightly raised so that some particulate matter in DMF was more rapidly dispersed in the system. Because the viscosity of the polyurethane resin is high, the polyurethane resin must be added into the system after other additives are uniformly dispersed, so that the additives are more uniformly dispersed in DMF. After the addition of the polyurethane resin was completed, the temperature in the stirring tank was lowered. The viscosity of the steeping fluid is prevented from being reduced due to overhigh temperature, and is increased if the temperature is lower than 40 ℃, and the temperature in the stirring kettle is controlled to be 40 ℃ so that the viscosity of the steeping fluid is moderate in order to maintain the stability of the viscosity. Finally, the nonwoven fabric is repeatedly immersed in the immersion liquid, so that the immersion liquid can be uniformly and sufficiently distributed in the gaps of the nonwoven fabric.
As a further improvement of the present invention, the coagulation regulator comprises ethylhexyl benzoyloxy stearate and lauric acid, and the mass ratio is 4: 1.
By adopting the technical scheme, the benzoyloxy ethyl hexyl stearate is a nonionic surfactant, belongs to a hydrophobic surfactant, and has hydrophobicity, so that the surface tension of a solidification section is increased, the solidification speed is reduced, the formation of a surface compact layer is delayed, and DMF in a film can be fully diffused out to form compact micropores. Lauric acid is an anionic surfactant and belongs to hydrophilic surfactants. Because lauric acid has hydrophilicity, the surface tension of a solidification interface is reduced, and the surface of the membrane is quickly solidified into a compact membrane. When the impregnation liquid enters the inside of the urethane resin film, solidification proceeds rapidly, and thus the obtained film has large pores and thin pore walls. By controlling the mass ratio of the benzoyloxy ethyl hexyl stearate to the lauric acid, the solidification speed of the polyurethane resin can be controlled, and the solidification speed of the polyurethane resin is moderate, so that the sodium dodecyl benzene sulfonate and the aminopropyltriethoxysilane can have sufficient time to uniformly disperse the polyurethane resin.
As a further improvement of the present invention, the S2 coating process comprises the following steps:
b1: firstly, conveying the cloth subjected to S1 dipping treatment to a tension bracket;
b2: inputting the coating agent into a coating machine, and then conveying the non-woven fabric treated by B1 into the coating machine for coating;
after B2, the S2 coating process was completed.
By adopting the technical scheme, the non-woven fabric is firstly input into the coating machine containing the coating agent, so that a layer of high-molecular film forming material can be uniformly coated on the surface of the non-woven fabric, and the non-woven fabric can be conveniently processed in different styles in the following process. The non-woven fabric is tensioned by the tension frame before entering the coating machine, so that the non-woven fabric is in a tensioned state, and the coating agent can enter between fiber molecules of the non-woven fabric more conveniently. Meanwhile, the cloth is prevented from being in a loose state before entering the coating machine so as to prevent the coating work from being influenced.
As a further improvement of the invention, the coating agent comprises the following chemical compositions in parts by weight: 70-130 parts of polyurethane resin, 4-6 parts of kaolin, 4-60 parts of DMF20, 0.2-0.7 part of potassium laureth phosphate, 3-7 parts of diethanolamine hydrosulfate and 1-2 parts of span 60.
By adopting the technical scheme, the coating aims to uniformly coat a layer of high-molecular film-forming material on the surface of the non-woven fabric. DMF is a solvent, can well dissolve the polyurethane resin in a system, can play a role in tackifying, and can improve the microporous structure on the surface of the polyurethane resin and reduce the elasticity of the involucra. The potassium lauryl polyether phosphate can eliminate bubbles generated in the preparation process of the polyurethane slurry, avoid the defects of pinholes, fish eyes, bubble scratches and the like caused by the polyurethane slurry brought to the surface of the coating, and ensure the smooth and flat surface of the coating. After the coating agent is coated on the non-woven fabric, the diethanolamine hydrosulfate can enhance the moisture permeability of the non-woven fabric, so that the subsequent base fabric has good moisture permeability, the water vapor on one side of the base fabric can be effectively transferred to the other side of the base fabric, and the sanitary performance of the synthetic leather is improved.
As a further improvement of the invention, the coating agent comprises the following chemical compositions in parts by weight: 70-130 parts of polyurethane resin, 4-6 parts of DMF20-60 parts of kaolin, 0.2-0.7 part of potassium laureth phosphate, 3-7 parts of diethanolamine hydrosulfate, 1-2 parts of span 60, 0.4-0.9 part of diethylene glycol diisononanoate and 0.1-0.3 part of diglycerol.
By adopting the technical scheme, the diglycerol is added into the system, so that the coating agent has stronger moisture permeability on the non-woven fabric, and has the function of moisturizing. Due to the addition of the diethylene glycol diisononyl ester, diglycerol is combined with potassium laureth phosphate to generate cations, so that electrons generated by static electricity can be neutralized when the fabric is rubbed to generate the static electricity, and the antistatic effect is achieved. Diethylene glycol diisononanoate also enables the relative moisture permeability of diglycerol and diethanolamine hydrogensulfate themselves to be increased simultaneously.
As a further improvement of the invention, the S3 solidification water washing treatment comprises the following steps:
c1: pre-solidifying the non-woven fabric subjected to the S2 coating treatment; setting time is 7-15min, and vehicle speed is 5 m/min;
c2: carrying out main solidification treatment on the non-woven fabric subjected to the C1 treatment, wherein the solidification time is 20-30min, and the vehicle speed is 6 m/min;
c3: the nonwoven fabric treated with C2 was washed with water.
By adopting the technical scheme, the solvent in the liquid polyurethane resin solution can be removed by carrying out solidification treatment on the non-woven fabric, and the solid film with a specific aggregation structure is formed.
In conclusion, the invention has the advantages and beneficial effects that:
1. polyurethane resin on the non-woven fabric is prevented from settling, so that the foaming states of the polyurethane resin on the front and back surfaces of the non-woven fabric are consistent, the subsequent processing of the base fabric is facilitated, and the dyeing of the base fabric is facilitated;
2. the mass ratio of the benzoyloxy ethyl hexyl stearate to the lauric acid is controlled, so that the solidification speed of the polyurethane resin can be controlled, the solidification speed of the polyurethane resin is moderate, and the sodium dodecyl benzene sulfonate and the aminopropyltriethoxysilane can have sufficient time to uniformly disperse the polyurethane resin;
3. the diglycerol is added into the system, so that the coating agent has stronger moisture permeability on the non-woven fabric and has the function of moisturizing. Due to the addition of the diethylene glycol diisononyl ester, diglycerol is combined with potassium laureth phosphate to generate cations, so that electrons generated by static electricity can be neutralized when the fabric is rubbed to generate the static electricity, and the antistatic effect is achieved. Diethylene glycol diisononanoate also enables the relative moisture permeability of diglycerol and diethanolamine hydrogensulfate themselves to be increased simultaneously.
Drawings
FIG. 1 is a process flow chart of a base cloth processing technology of superfine fiber synthetic leather of the invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples.
Example 1:
referring to fig. 1, the following are each in parts by weight.
A process for processing base cloth of superfine fiber synthetic leather comprises the following steps of:
s1: and (4) dipping treatment. The dipping treatment comprises the following steps:
a1: 75 parts of DMF was added to the stirred tank, and the stirred tank was allowed to start stirring for 17min, with the temperature in the stirred tank being controlled to 53 ℃.
A2: 1.6 parts of benzoyloxy ethylhexyl stearate, 0.4 part of lauric acid, 20 parts of sodium dodecyl benzene sulfonate and 13 parts of aminopropyl triethoxysilane are added into the stirring kettle treated by A1 in a non-sequential manner, the mixture is stirred for 10min, then the temperature in the stirring kettle is raised to 65 ℃, and then the mixture is stirred for 10 min.
A3: 100 parts of polyurethane resin is added into the stirring kettle treated by A2, the temperature in the stirring kettle is reduced to 40 ℃, and stirring is carried out for 60 min.
A4: transferring the impregnation liquid after the A3 treatment to an impregnator, and then inputting the non-woven fabric into the impregnator for repeated impregnation.
After the treatment by a4, the S1 immersion treatment was ended.
S2: and (5) coating treatment. The coating treatment comprises the following steps:
b1: the cloth after being impregnated in the S1 is conveyed to a tension bracket.
B2: the coating agent is input into a coating machine, and then the nonwoven fabric treated by B1 is conveyed into the coating machine for coating. Wherein the coating agent comprises the following chemical components: 100 parts of polyurethane resin, 40 parts of DMF, 5 parts of kaolin, 0.45 part of potassium laureth phosphate, 5 parts of diethanolamine bisulfate, 1.5 parts of span 60, 0.6 part of diethylene glycol diisononanoate and 0.2 part of diglycerol. The method for preparing the coating agent comprises the following steps: adding DMF into a stirring kettle, continuously stirring, adding kaolin, potassium laureth phosphate, diethanolamine bisulfate, span 60, diethylene glycol diisononanoate and diglycerol in no sequence, stirring while adding, stirring for 30min after adding, adding polyurethane resin while stirring, and continuously stirring for 30min after adding. Thereby putting into use.
After B2, the S2 coating process was completed.
S3: and (5) solidifying and washing with water. The solidification water washing treatment comprises the following steps:
c1: and (3) inputting the non-woven fabric subjected to the S2 coating treatment into a pre-coagulation tank, wherein a pre-coagulation solid liquid is added into the pre-coagulation tank, and the pre-coagulation solid liquid is a mixed liquid of DMF and water, and the mass ratio of DMF to water is 1: 1. The temperature of the pre-coagulation solid liquid is kept at 30 ℃, and the pre-coagulation solid liquid is fully stirred before the non-woven fabric enters the pre-coagulation tank, so that the pre-coagulation solid liquid is uniformly stirred. The setting time is 11min, and the vehicle speed is 5 m/min.
C2: and (3) carrying out main solidification treatment on the non-woven fabric treated by the C1, and conveying the non-woven fabric from the pre-solidification tank to a main solidification tank, wherein a main solidification liquid is added into the main solidification tank, and the main solidification liquid is a mixed liquid of DMF and water, and the mass ratio of DMF to water is 1: 3. After the non-woven fabric is input into the main coagulation tank, the non-woven fabric is continuously padded in the tank until the polyurethane resin is completely coagulated. The solidification time is 25min, and the vehicle speed is 6 m/min.
C3: the nonwoven fabric treated with C2 was washed with water. After the nonwoven fabric is subjected to the C2 treatment, the nonwoven fabric is fed into a washing tank composed of rolls and guide rolls, so that the nonwoven fabric is repeatedly washed and pressed, thereby sufficiently removing DMF and other auxiliaries.
After passing through all the above steps, the nonwoven fabric is processed into a base fabric.
Example 2:
the following materials are each in parts by weight.
A process for processing base cloth of superfine fiber synthetic leather comprises the following steps of:
s1: and (4) dipping treatment. The dipping treatment comprises the following steps:
a1: 75 parts of DMF was added to the stirred tank, and the stirred tank was allowed to start stirring for 17min, with the temperature in the stirred tank being controlled to 53 ℃.
A2: 1.6 parts of benzoyloxy ethylhexyl stearate, 0.4 part of lauric acid, 20 parts of sodium dodecyl benzene sulfonate and 13 parts of aminopropyl triethoxysilane are added into the stirring kettle treated by A1 in a non-sequential manner, the mixture is stirred for 10min, then the temperature in the stirring kettle is raised to 65 ℃, and then the mixture is stirred for 10 min.
A3: 100 parts of polyurethane resin is added into the stirring kettle treated by A2, the temperature in the stirring kettle is reduced to 40 ℃, and stirring is carried out for 60 min.
A4: transferring the impregnation liquid after the A3 treatment to an impregnator, and then inputting the non-woven fabric into the impregnator for repeated impregnation.
After the treatment by a4, the S1 immersion treatment was ended.
S2: and (5) coating treatment. The coating treatment comprises the following steps:
b1: the cloth after being impregnated in the S1 is conveyed to a tension bracket.
B2: the coating agent is input into a coating machine, and then the nonwoven fabric treated by B1 is conveyed into the coating machine for coating. Wherein the coating agent comprises the following chemical components: 100 parts of polyurethane resin, 40 parts of DMF, 5 parts of kaolin, 0.45 part of potassium laureth phosphate, 5 parts of diethanolamine bisulfate and 1.5 parts of span 60. The method for preparing the coating agent comprises the following steps: adding DMF into a stirring kettle, continuously stirring, adding kaolin, potassium laureth phosphate, diethanolamine bisulfate, span 60 and the mixture in a non-sequential manner while stirring, stirring for 30min after the addition is finished, adding polyurethane resin while stirring, and continuously stirring for 30min after the addition is finished. Thereby putting into use.
After B2, the S2 coating process was completed.
S3: and (5) solidifying and washing with water. The solidification water washing treatment comprises the following steps:
c1: and (3) inputting the non-woven fabric subjected to the S2 coating treatment into a pre-coagulation tank, wherein a pre-coagulation solid liquid is added into the pre-coagulation tank, and the pre-coagulation solid liquid is a mixed liquid of DMF and water, and the mass ratio of DMF to water is 1: 1. The temperature of the pre-coagulation solid liquid is kept at 30 ℃, and the pre-coagulation solid liquid is fully stirred before the non-woven fabric enters the pre-coagulation tank, so that the pre-coagulation solid liquid is uniformly stirred. The setting time is 11min, and the vehicle speed is 5 m/min.
C2: and (3) carrying out main solidification treatment on the non-woven fabric treated by the C1, and conveying the non-woven fabric from the pre-solidification tank to a main solidification tank, wherein a main solidification liquid is added into the main solidification tank, and the main solidification liquid is a mixed liquid of DMF and water, and the mass ratio of DMF to water is 1: 3. After the non-woven fabric is input into the main coagulation tank, the non-woven fabric is continuously padded in the tank until the polyurethane resin is completely coagulated. The solidification time is 25min, and the vehicle speed is 6 m/min.
C3: the nonwoven fabric treated with C2 was washed with water. After the nonwoven fabric is subjected to the C2 treatment, the nonwoven fabric is fed into a washing tank composed of rolls and guide rolls, so that the nonwoven fabric is repeatedly washed and pressed, thereby sufficiently removing DMF and other auxiliaries.
After passing through all the above steps, the nonwoven fabric is processed into a base fabric.
Example 3:
the following materials are each in parts by weight.
A process for processing base cloth of superfine fiber synthetic leather comprises the following steps of:
s1: and (4) dipping treatment. The dipping treatment comprises the following steps:
a1: 75 parts of DMF was added to the stirred tank, and the stirred tank was allowed to start stirring for 17min, with the temperature in the stirred tank being controlled to 53 ℃.
A2: 1.6 parts of benzoyloxy ethylhexyl stearate, 0.4 part of lauric acid, 20 parts of sodium dodecyl benzene sulfonate, 13 parts of aminopropyl triethoxysilane and 4 parts of ammonium benzoate are added into a stirring kettle treated by A1 in a nonsequential manner, the stirring is firstly carried out for 10min, then the temperature in the stirring kettle is raised to 65 ℃, and the stirring is carried out for 10 min.
A3: 100 parts of polyurethane resin is added into the stirring kettle treated by A2, the temperature in the stirring kettle is reduced to 40 ℃, and stirring is carried out for 60 min.
A4: transferring the impregnation liquid after the A3 treatment to an impregnator, and then inputting the non-woven fabric into the impregnator for repeated impregnation.
After the treatment by a4, the S1 immersion treatment was ended.
S2: and (5) coating treatment. The coating treatment comprises the following steps:
b1: the cloth after being impregnated in the S1 is conveyed to a tension bracket.
B2: the coating agent is input into a coating machine, and then the nonwoven fabric treated by B1 is conveyed into the coating machine for coating. Wherein the coating agent comprises the following chemical components: 100 parts of polyurethane resin, 40 parts of DMF, 5 parts of kaolin, 0.45 part of potassium laureth phosphate, 5 parts of diethanolamine bisulfate and 1.5 parts of span 60. The method for preparing the coating agent comprises the following steps: adding DMF into a stirring kettle, continuously stirring, adding kaolin, potassium laureth phosphate, diethanolamine bisulfate and span 60 in no sequence, stirring while adding, stirring for 30min after adding, adding polyurethane resin while stirring, and continuously stirring for 30min after adding. Thereby putting into use.
After B2, the S2 coating process was completed.
S3: and (5) solidifying and washing with water. The solidification water washing treatment comprises the following steps:
c1: and (3) inputting the non-woven fabric subjected to the S2 coating treatment into a pre-coagulation tank, wherein a pre-coagulation solid liquid is added into the pre-coagulation tank, and the pre-coagulation solid liquid is a mixed liquid of DMF and water, and the mass ratio of DMF to water is 1: 1. The temperature of the pre-coagulation solid liquid is kept at 30 ℃, and the pre-coagulation solid liquid is fully stirred before the non-woven fabric enters the pre-coagulation tank, so that the pre-coagulation solid liquid is uniformly stirred. The setting time is 11min, and the vehicle speed is 5 m/min.
C2: and (3) carrying out main solidification treatment on the non-woven fabric treated by the C1, and conveying the non-woven fabric from the pre-solidification tank to a main solidification tank, wherein a main solidification liquid is added into the main solidification tank, and the main solidification liquid is a mixed liquid of DMF and water, and the mass ratio of DMF to water is 1: 3. After the non-woven fabric is input into the main coagulation tank, the non-woven fabric is continuously padded in the tank until the polyurethane resin is completely coagulated. The solidification time is 25min, and the vehicle speed is 6 m/min.
C3: the nonwoven fabric treated with C2 was washed with water. After the nonwoven fabric is subjected to the C2 treatment, the nonwoven fabric is fed into a washing tank composed of rolls and guide rolls, so that the nonwoven fabric is repeatedly washed and pressed, thereby sufficiently removing DMF and other auxiliaries.
After passing through all the above steps, the nonwoven fabric is processed into a base fabric.
Example 4:
the following materials are each in parts by weight.
A process for processing base cloth of superfine fiber synthetic leather comprises the following steps of:
s1: and (4) dipping treatment. The dipping treatment comprises the following steps:
a1: 75 parts of DMF was added to the stirred tank, and the stirred tank was allowed to start stirring for 17min, with the temperature in the stirred tank being controlled to 53 ℃.
A2: 1.6 parts of benzoyloxy ethylhexyl stearate, 0.4 part of lauric acid, 20 parts of sodium dodecyl benzene sulfonate, 13 parts of aminopropyl triethoxysilane and 4 parts of ammonium benzoate are added into a stirring kettle treated by A1 in a nonsequential manner, the stirring is firstly carried out for 10min, then the temperature in the stirring kettle is raised to 65 ℃, and the stirring is carried out for 10 min.
A3: 100 parts of polyurethane resin is added into the stirring kettle treated by A2, the temperature in the stirring kettle is reduced to 40 ℃, and stirring is carried out for 60 min.
A4: transferring the impregnation liquid after the A3 treatment to an impregnator, and then inputting the non-woven fabric into the impregnator for repeated impregnation.
After the treatment by a4, the S1 immersion treatment was ended.
S2: and (5) coating treatment. The coating treatment comprises the following steps:
b1: the cloth after being impregnated in the S1 is conveyed to a tension bracket.
B2: the coating agent is input into a coating machine, and then the nonwoven fabric treated by B1 is conveyed into the coating machine for coating. Wherein the coating agent comprises the following chemical components: 100 parts of polyurethane resin, 40 parts of DMF, 5 parts of kaolin, 0.45 part of potassium laureth phosphate, 5 parts of diethanolamine bisulfate, 1.5 parts of span 60, 0.6 part of diethylene glycol diisononanoate and 0.2 part of diglycerol. The method for preparing the coating agent comprises the following steps: adding DMF into a stirring kettle, continuously stirring, adding kaolin, potassium laureth phosphate, diethanolamine bisulfate, span 60, diethylene glycol diisononanoate and diglycerol in no sequence, stirring while adding, stirring for 30min after adding, adding polyurethane resin while stirring, and continuously stirring for 30min after adding. Thereby putting into use.
After B2, the S2 coating process was completed.
S3: and (5) solidifying and washing with water. The solidification water washing treatment comprises the following steps:
c1: and (3) inputting the non-woven fabric subjected to the S2 coating treatment into a pre-coagulation tank, wherein a pre-coagulation solid liquid is added into the pre-coagulation tank, and the pre-coagulation solid liquid is a mixed liquid of DMF and water, and the mass ratio of DMF to water is 1: 1. The temperature of the pre-coagulation solid liquid is kept at 30 ℃, and the pre-coagulation solid liquid is fully stirred before the non-woven fabric enters the pre-coagulation tank, so that the pre-coagulation solid liquid is uniformly stirred. The setting time is 11min, and the vehicle speed is 5 m/min.
C2: and (3) carrying out main solidification treatment on the non-woven fabric treated by the C1, and conveying the non-woven fabric from the pre-solidification tank to a main solidification tank, wherein a main solidification liquid is added into the main solidification tank, and the main solidification liquid is a mixed liquid of DMF and water, and the mass ratio of DMF to water is 1: 3. After the non-woven fabric is input into the main coagulation tank, the non-woven fabric is continuously padded in the tank until the polyurethane resin is completely coagulated. The solidification time is 25min, and the vehicle speed is 6 m/min.
C3: the nonwoven fabric treated with C2 was washed with water. After the nonwoven fabric is processed by C2, the nonwoven fabric is input into a washing tank, and the washing tank consists of a tank body, a roller and a guide roller, so that the nonwoven fabric is repeatedly washed and extruded, and DMF and other auxiliary agents are sufficiently removed.
After passing through all the above steps, the nonwoven fabric is processed into a base fabric.
Examples 5 to 8 differ from example 4 in that the chemical compositions of the impregnation solutions in the impregnation treatment of S1 are shown in the following table in parts by weight:
Figure BDA0002110191150000151
Figure BDA0002110191150000161
examples 9 to 12 differ from example 4 in that the respective chemical compositions of the coating agents in the coating treatment of S2 in parts by weight are shown in the following table:
example 9 Example 10 Example 11 Example 12
Polyurethane resin 70 130 80 110
DMF 20 60 30 50
Kaolin clay 4 6 5 5
Potassium lauryl polyether phosphate 0.2 0.7 0.3 0.5
Diethanolamine bisulfate salt 3 7 4 6
Span 60 1 2 1.3 1.7
Diethylene glycol diisononanoate 0.4 0.9 0.5 0.8
Diglycerol 0.1 0.3 0.2 0.2
Comparative example 1: the difference from the embodiment 1 is that the Chinese patent with the publication number of CN101725052B is selected as the dipping liquid in the S1 dipping treatment, and the water-based polyurethane resin superfine fiber leather and the manufacturing method thereof are disclosed, wherein the dipping liquid is mentioned in the wet processing technology.
Comparative example 2: the difference from the example 1 is that Chinese patent with the publication number of CN101725052B is selected as the coating agent in the S2 coating treatment, and the water-based polyurethane resin superfine fiber leather and the manufacturing method thereof are disclosed, wherein the coating liquid is used in the wet processing process.
Comparative example 3: the difference from the embodiment 1 is that Chinese patent with the publication number of CN101725052B is selected as the dipping solution in the S1 dipping treatment, and the water-based polyurethane resin superfine fiber leather and the manufacturing method are disclosed, wherein the dipping solution is mentioned in the wet processing technology; the coating agent in the S2 coating treatment adopts Chinese patent with the publication number of CN101725052B, and discloses aqueous polyurethane resin superfine fiber leather and a manufacturing method thereof, wherein the coating liquid is mentioned in a wet processing process.
The same batch of commercially available nonwoven fabrics were divided into 7 parts on average, and the random numbers 001-.
Test one: base cloth dyeing test.
The test method comprises the following steps: the base cloth with the number 001-007 was dyed in the dyeing manner mentioned in paragraph [0037] of the patent publication No. CN103603197B, and the dye uptake was recorded as shown in the following table.
And (2) test II: and (4) observability test.
The test contents are as follows: the processed 001-.
And (3) test III: moisture permeability test of the base fabric.
The test method comprises the following steps: reference standard is the first part of the GB/T12704.2-2009 textile fabric moisture permeability test method: a wet absorption method; the results of measuring the moisture permeability of the base fabric numbered 001-.
Test results
Figure BDA0002110191150000171
Figure BDA0002110191150000181
As is clear from the data in the above table, since each of nos. 003, 004 and 006 uses the impregnation liquid described in the present invention, the dye uptake of the base fabric after processing is higher than that of the base fabric of the other nos., and it is demonstrated that the base fabric after processing can be more conveniently dyed using the impregnation liquid described in the present invention.
The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and embellishments within the scope of the invention may occur to those skilled in the art without departing from the principle of the invention, and are considered to be within the scope of the invention.

Claims (4)

1. A processing technology of base cloth of superfine fiber synthetic leather is characterized in that: processing the non-woven fabric by the following steps;
s1: dipping treatment; conveying the non-woven fabric into an impregnating solution for impregnation, wherein the impregnating solution comprises the following chemical components in parts by weight: 80-120 parts of polyurethane resin, 60-90 parts of DMF (dimethyl formamide), 1-3 parts of a solidification regulator, 15-25 parts of sodium dodecyl benzene sulfonate and 10-16 parts of aminopropyltriethoxysilane;
s2: coating treatment;
s3: carrying out solidification water washing treatment;
after S3, finishing processing the base cloth;
the coagulation regulator comprises benzoyloxy ethyl hexyl stearate and lauric acid, and the mass ratio of the benzoyloxy ethyl hexyl stearate to the lauric acid is 4: 1;
the S2 coating treatment comprises the following steps:
b1: firstly, conveying the cloth subjected to S1 dipping treatment to a tension bracket;
b2: inputting the coating agent into a coating machine, and then conveying the non-woven fabric treated by B1 into the coating machine for coating;
after B2, finishing the S2 coating treatment;
the coating agent comprises the following chemical components in parts by weight: 70-130 parts of polyurethane resin, 4-6 parts of DMF20-60 parts of kaolin, 0.2-0.7 part of potassium laureth phosphate, 3-7 parts of diethanolamine hydrosulfate, 1-2 parts of span 60, 0.4-0.9 part of diethylene glycol diisononanoate and 0.1-0.3 part of diglycerol.
2. A processing technology of base cloth of superfine fiber synthetic leather is characterized in that: processing the non-woven fabric by the following steps;
s1: dipping treatment; conveying the non-woven fabric into an impregnating solution for impregnation, wherein the impregnating solution comprises the following chemical components in parts by weight: 80-120 parts of polyurethane resin, 60-90 parts of DMF (dimethyl formamide), 1-3 parts of a solidification regulator, 15-25 parts of sodium dodecyl benzene sulfonate, 10-16 parts of aminopropyltriethoxysilane and 3-6 parts of ammonium benzoate;
s2: coating treatment;
s3: carrying out solidification water washing treatment;
after S3, finishing processing the base cloth;
the coagulation regulator comprises benzoyloxy ethyl hexyl stearate and lauric acid, and the mass ratio of the benzoyloxy ethyl hexyl stearate to the lauric acid is 4: 1;
the S2 coating treatment comprises the following steps:
b1: firstly, conveying the cloth subjected to S1 dipping treatment to a tension bracket;
b2: inputting the coating agent into a coating machine, and then conveying the non-woven fabric treated by B1 into the coating machine for coating;
after B2, finishing the S2 coating treatment;
the coating agent comprises the following chemical components in parts by weight: 70-130 parts of polyurethane resin, 4-6 parts of DMF20-60 parts of kaolin, 0.2-0.7 part of potassium laureth phosphate, 3-7 parts of diethanolamine hydrosulfate, 1-2 parts of span 60, 0.4-0.9 part of diethylene glycol diisononanoate and 0.1-0.3 part of diglycerol.
3. The processing technology of the base cloth of the superfine fiber synthetic leather according to claim 2 is characterized in that: the S1 dipping treatment comprises the following steps:
a1: firstly, adding DMF (dimethyl formamide) into a stirring kettle according to the weight parts, starting stirring the stirring kettle for 15-20min, and controlling the temperature in the stirring kettle to be 45-60 ℃;
a2: adding the solidification regulator, sodium dodecyl benzene sulfonate, aminopropyltriethoxysilane and ammonium benzoate into the stirring kettle treated by A1 in the parts by weight in no sequence, stirring for 10min, heating the temperature in the stirring kettle to 65 ℃, and stirring for 10 min;
a3: adding the polyurethane resin into the stirring kettle treated by the A2 according to the weight part, reducing the temperature in the stirring kettle to 40 ℃, and stirring for 50-70 min;
a4: transferring the impregnation liquid after the A3 treatment to an impregnator, and then inputting the non-woven fabric into the impregnator for repeated impregnation;
after the treatment by a4, the S1 immersion treatment was ended.
4. The processing technology of the base cloth of the superfine fiber synthetic leather according to claim 1, which is characterized in that: the S3 solidification water washing treatment comprises the following steps:
c1: pre-solidifying the non-woven fabric subjected to the S2 coating treatment; setting time is 7-15min, and vehicle speed is 5 m/min;
c2: carrying out main solidification treatment on the non-woven fabric subjected to the C1 treatment, wherein the solidification time is 20-30min, and the vehicle speed is 6 m/min;
c3: the nonwoven fabric treated with C2 was washed with water.
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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102115983A (en) * 2011-01-26 2011-07-06 烟台华大化学工业有限公司 Aqueous polyurethane superfine fiber synthetic leather and preparation method thereof
CN102561052A (en) * 2012-01-15 2012-07-11 山东同大海岛新材料股份有限公司 Method for producing superfine fiber synthetic leather
CN102561050A (en) * 2012-01-05 2012-07-11 无锡双象超纤材料股份有限公司 Method for producing fiber non-woven fabric superfine fiber synthetic leather
CN103603197A (en) * 2013-11-12 2014-02-26 陕西科技大学 Method for improving dyeing property of superfine fiber synthetic leather base cloth
CN104328690A (en) * 2014-10-16 2015-02-04 陕西科技大学 Thermal conductive polyurethane synthetic leather production method

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102115983A (en) * 2011-01-26 2011-07-06 烟台华大化学工业有限公司 Aqueous polyurethane superfine fiber synthetic leather and preparation method thereof
CN102561050A (en) * 2012-01-05 2012-07-11 无锡双象超纤材料股份有限公司 Method for producing fiber non-woven fabric superfine fiber synthetic leather
CN102561052A (en) * 2012-01-15 2012-07-11 山东同大海岛新材料股份有限公司 Method for producing superfine fiber synthetic leather
CN103603197A (en) * 2013-11-12 2014-02-26 陕西科技大学 Method for improving dyeing property of superfine fiber synthetic leather base cloth
CN104328690A (en) * 2014-10-16 2015-02-04 陕西科技大学 Thermal conductive polyurethane synthetic leather production method

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Denomination of invention: A Processing Technology for the Base Fabric of Ultrafine Fiber Synthetic Leather

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