CN111455687A - Impregnation processing technology of water-based microfiber synthetic leather - Google Patents
Impregnation processing technology of water-based microfiber synthetic leather Download PDFInfo
- Publication number
- CN111455687A CN111455687A CN202010296472.1A CN202010296472A CN111455687A CN 111455687 A CN111455687 A CN 111455687A CN 202010296472 A CN202010296472 A CN 202010296472A CN 111455687 A CN111455687 A CN 111455687A
- Authority
- CN
- China
- Prior art keywords
- woven fabric
- polyurethane resin
- resin
- synthetic leather
- impregnation processing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 229920001410 Microfiber Polymers 0.000 title claims abstract description 50
- 239000003658 microfiber Substances 0.000 title claims abstract description 50
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 36
- 238000005470 impregnation Methods 0.000 title claims abstract description 33
- 239000002649 leather substitute Substances 0.000 title claims abstract description 30
- 238000012545 processing Methods 0.000 title claims abstract description 21
- 238000005516 engineering process Methods 0.000 title claims abstract description 9
- 239000004745 nonwoven fabric Substances 0.000 claims abstract description 94
- 238000000034 method Methods 0.000 claims abstract description 52
- 230000008569 process Effects 0.000 claims abstract description 46
- 229920005749 polyurethane resin Polymers 0.000 claims abstract description 40
- 229920005989 resin Polymers 0.000 claims abstract description 38
- 239000011347 resin Substances 0.000 claims abstract description 38
- 238000001035 drying Methods 0.000 claims abstract description 28
- 239000002002 slurry Substances 0.000 claims abstract description 23
- 239000000701 coagulant Substances 0.000 claims abstract description 9
- 239000008151 electrolyte solution Substances 0.000 claims abstract description 5
- 239000000835 fiber Substances 0.000 claims description 41
- 239000003792 electrolyte Substances 0.000 claims description 14
- 239000004744 fabric Substances 0.000 claims description 13
- 238000005096 rolling process Methods 0.000 claims description 13
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 claims description 12
- 239000008367 deionised water Substances 0.000 claims description 12
- 229910021641 deionized water Inorganic materials 0.000 claims description 12
- 235000002639 sodium chloride Nutrition 0.000 claims description 12
- 230000015271 coagulation Effects 0.000 claims description 9
- 238000005345 coagulation Methods 0.000 claims description 9
- WCUXLLCKKVVCTQ-UHFFFAOYSA-M Potassium chloride Chemical compound [Cl-].[K+] WCUXLLCKKVVCTQ-UHFFFAOYSA-M 0.000 claims description 8
- 239000000839 emulsion Substances 0.000 claims description 7
- 238000002156 mixing Methods 0.000 claims description 6
- 239000011780 sodium chloride Substances 0.000 claims description 6
- 150000001732 carboxylic acid derivatives Chemical class 0.000 claims description 5
- 239000001103 potassium chloride Substances 0.000 claims description 4
- 235000011164 potassium chloride Nutrition 0.000 claims description 4
- 229910052939 potassium sulfate Inorganic materials 0.000 claims description 4
- 229910052938 sodium sulfate Inorganic materials 0.000 claims description 4
- LWIHDJKSTIGBAC-UHFFFAOYSA-K tripotassium phosphate Chemical compound [K+].[K+].[K+].[O-]P([O-])([O-])=O LWIHDJKSTIGBAC-UHFFFAOYSA-K 0.000 claims description 4
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 claims description 3
- 238000004886 process control Methods 0.000 claims description 3
- 235000011152 sodium sulphate Nutrition 0.000 claims description 3
- 230000004584 weight gain Effects 0.000 claims description 3
- 235000019786 weight gain Nutrition 0.000 claims description 3
- 239000000178 monomer Substances 0.000 claims description 2
- 229910000160 potassium phosphate Inorganic materials 0.000 claims description 2
- 235000011009 potassium phosphates Nutrition 0.000 claims description 2
- OTYBMLCTZGSZBG-UHFFFAOYSA-L potassium sulfate Chemical compound [K+].[K+].[O-]S([O-])(=O)=O OTYBMLCTZGSZBG-UHFFFAOYSA-L 0.000 claims description 2
- 235000011151 potassium sulphates Nutrition 0.000 claims description 2
- 239000001488 sodium phosphate Substances 0.000 claims description 2
- 229910000162 sodium phosphate Inorganic materials 0.000 claims description 2
- 235000011008 sodium phosphates Nutrition 0.000 claims description 2
- RYFMWSXOAZQYPI-UHFFFAOYSA-K trisodium phosphate Chemical compound [Na+].[Na+].[Na+].[O-]P([O-])([O-])=O RYFMWSXOAZQYPI-UHFFFAOYSA-K 0.000 claims description 2
- 230000005012 migration Effects 0.000 abstract description 34
- 238000013508 migration Methods 0.000 abstract description 34
- 230000007547 defect Effects 0.000 abstract description 4
- 238000001248 thermal gelation Methods 0.000 abstract description 4
- 238000009826 distribution Methods 0.000 abstract description 3
- 238000007602 hot air drying Methods 0.000 abstract description 3
- 239000010985 leather Substances 0.000 description 24
- 239000002585 base Substances 0.000 description 15
- 238000007711 solidification Methods 0.000 description 15
- 230000008023 solidification Effects 0.000 description 15
- 239000013585 weight reducing agent Substances 0.000 description 12
- 238000004140 cleaning Methods 0.000 description 11
- 238000004043 dyeing Methods 0.000 description 11
- 239000007788 liquid Substances 0.000 description 11
- 239000000047 product Substances 0.000 description 11
- 230000009467 reduction Effects 0.000 description 11
- 238000005520 cutting process Methods 0.000 description 10
- 238000007790 scraping Methods 0.000 description 10
- 238000002791 soaking Methods 0.000 description 10
- 239000007787 solid Substances 0.000 description 10
- 230000000052 comparative effect Effects 0.000 description 8
- 238000007598 dipping method Methods 0.000 description 8
- 239000007864 aqueous solution Substances 0.000 description 7
- 238000007654 immersion Methods 0.000 description 7
- 238000004519 manufacturing process Methods 0.000 description 7
- 239000002562 thickening agent Substances 0.000 description 7
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 6
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 6
- 239000000463 material Substances 0.000 description 6
- 238000002360 preparation method Methods 0.000 description 6
- 150000003839 salts Chemical class 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 230000007613 environmental effect Effects 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 239000008601 oleoresin Substances 0.000 description 4
- 239000002904 solvent Substances 0.000 description 4
- 229920002803 thermoplastic polyurethane Polymers 0.000 description 4
- 239000002351 wastewater Substances 0.000 description 4
- -1 acrylic ester Chemical class 0.000 description 3
- 239000002736 nonionic surfactant Substances 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 238000007493 shaping process Methods 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 239000003513 alkali Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000006260 foam Substances 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 230000014759 maintenance of location Effects 0.000 description 2
- 230000035515 penetration Effects 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 229910000404 tripotassium phosphate Inorganic materials 0.000 description 2
- 238000009736 wetting Methods 0.000 description 2
- 239000004925 Acrylic resin Substances 0.000 description 1
- 229920000178 Acrylic resin Polymers 0.000 description 1
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 1
- 206010003694 Atrophy Diseases 0.000 description 1
- 241001391944 Commicarpus scandens Species 0.000 description 1
- 239000007832 Na2SO4 Substances 0.000 description 1
- 229910019142 PO4 Inorganic materials 0.000 description 1
- 206010057040 Temperature intolerance Diseases 0.000 description 1
- 150000003863 ammonium salts Chemical class 0.000 description 1
- 125000000129 anionic group Chemical group 0.000 description 1
- 230000037444 atrophy Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 150000001733 carboxylic acid esters Chemical class 0.000 description 1
- 125000002091 cationic group Chemical group 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000003995 emulsifying agent Substances 0.000 description 1
- 238000001879 gelation Methods 0.000 description 1
- 230000008543 heat sensitivity Effects 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- 238000007603 infrared drying Methods 0.000 description 1
- 150000008040 ionic compounds Chemical class 0.000 description 1
- MJIHNNLFOKEZEW-UHFFFAOYSA-N lansoprazole Chemical compound CC1=C(OCC(F)(F)F)C=CN=C1CS(=O)C1=NC2=CC=CC=C2N1 MJIHNNLFOKEZEW-UHFFFAOYSA-N 0.000 description 1
- 150000007522 mineralic acids Chemical class 0.000 description 1
- 239000011259 mixed solution Substances 0.000 description 1
- 238000000643 oven drying Methods 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 229940051841 polyoxyethylene ether Drugs 0.000 description 1
- 229920000056 polyoxyethylene ether Polymers 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000011342 resin composition Substances 0.000 description 1
- 239000007785 strong electrolyte Substances 0.000 description 1
- 230000009182 swimming Effects 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
- 229910000406 trisodium phosphate Inorganic materials 0.000 description 1
- 239000011782 vitamin Substances 0.000 description 1
- 229940088594 vitamin Drugs 0.000 description 1
- 229930003231 vitamin Natural products 0.000 description 1
- 235000013343 vitamin Nutrition 0.000 description 1
- 150000003722 vitamin derivatives Chemical class 0.000 description 1
- 239000012224 working solution Substances 0.000 description 1
Images
Classifications
-
- D—TEXTILES; PAPER
- 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
- D06N3/12—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
-
- D—TEXTILES; PAPER
- 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)
-
- D—TEXTILES; PAPER
- 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
- D06N3/0011—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 non-woven fabrics
-
- D—TEXTILES; PAPER
- 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
- D06N3/0056—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
-
- D—TEXTILES; PAPER
- 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
- D06N3/0077—Embossing; Pressing of the surface; Tumbling and crumbling; Cracking; Cooling; Heating, e.g. mirror finish
-
- D—TEXTILES; PAPER
- 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
- D06N3/0086—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the application technique
-
- D—TEXTILES; PAPER
- 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
- D06N2211/00—Specially adapted uses
- D06N2211/12—Decorative or sun protection articles
- D06N2211/28—Artificial leather
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
- Y02P70/62—Manufacturing or production processes characterised by the final manufactured product related technologies for production or treatment of textile or flexible materials or products thereof, including footwear
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Dispersion Chemistry (AREA)
- Synthetic Leather, Interior Materials Or Flexible Sheet Materials (AREA)
- Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
Abstract
The invention discloses an impregnation processing technology of water-based microfiber synthetic leather. The control of the migration of the aqueous polyurethane resin to two sides in the drying process, namely the control of the distribution of the polyurethane resin is crucial to the processing of the aqueous microfiber, but the existing process technology has certain defects. The invention adopts low-concentration univalent electrolyte solution as coagulant aid, and the low-concentration univalent electrolyte solution is matched with waterborne polyurethane resin to form impregnated resin slurry. The resin-impregnated slurry has the characteristics of low viscosity at room temperature, good fluidity and wettability and capability of fully permeating into the microfiber non-woven fabric, but the resin-impregnated slurry has the characteristic of thermal gelation, the temperature is increased, the viscosity of the slurry is rapidly increased to gel, the resin can be solidified at a corresponding position before water is not volatilized, the purpose of fixing the resin before complete drying is achieved, and the migration phenomenon which is difficult to avoid during ordinary hot air drying is effectively prevented.
Description
Technical Field
The invention belongs to the field of microfiber synthetic leather, and particularly relates to an impregnation processing technology of water-based microfiber synthetic leather.
Background
In recent years, as the environmental protection pressure is increasingly severe, some backward genuine leather productivity is gradually eliminated, and the genuine leather market has some atrophy, so that a certain market space is reserved for synthetic leather, wherein especially for microfiber synthetic leather, the microfiber synthetic leather is taken as third-generation artificial leather, and the structure, the performance and the sanitary performance of the microfiber synthetic leather are closer to those of genuine leather; is a good substitute product for genuine leather, and is increasingly accepted by high-end consumer markets in recent years.
However, the conventional microfiber processing adopts oleoresin and wet solidification process, wherein the oleoresin uses DMF as solvent, and then the solvent DMF in the oleoresin is replaced by water in the wet solidification stage to fix the oleoresin. The wet solidification process has the advantages that the microfiber resin is fixed in position in microfiber leather and then dried, and a plurality of holes are left during the replacement of water and DMF during solidification, so that the microfiber leather can be endowed with soft and comfortable hand feeling. The traditional oily microfiber has the defects that DMF must be used as a solvent, the DMF waste water amount is large, the recovery cost is high, the environmental protection risk is high, and the traditional oily microfiber is also a bottleneck for restricting the development of the traditional oily microfiber industry. The water-based microfiber is an important direction for environmental protection transformation and upgrading in microfiber industry. The water-based microfiber is also a hotspot of research in the recent industry, the water-based microfiber solves the problem of environmental protection because the water is used as a solvent to avoid the use of DMF, but simultaneously the wet solidification process can not be adopted any more, and the existing advantages of the wet solidification process can not be inherited, so the retention of the characteristics of the oily process is also a hotspot of research on the water-based microfiber process. Among them, the most prominent is the process of cell retention and solidification. Chinese patent CN110685159A production method for aqueous microfiber synthesis discloses a preparation process of aqueous microfiber, which adopts aqueous polyurethane resin and aqueous acrylic resin to blend as impregnation slurry, and utilizes the hydrolysis of sodium hydroxide on acrylic ester in an alkali weight reduction environment to simultaneously reduce acrylic ester resin in the resin and sea components in sea-island fibers to obtain a base material containing foam pores. Chinese patent CN110607694A, a waterborne microfiber non-woven fabric capable of replacing genuine leather, also discloses a method for preparing foam holes in waterborne microfiber resin: adding a polymer particle which can be dissolved in toluene into the impregnated resin, and dissolving the polymer particle to obtain the cell by utilizing the toluene decrement process.
In addition, it is known in the industry that moisture volatilizes from the middle to the two side surfaces during the drying process after the impregnation with the aqueous resin, and the volatilization of the moisture causes migration of the resin, thereby affecting the distribution state of the resin and affecting the hand feeling.
The oily wet solidification process does not have the defect, and a plurality of proposals are made for solving the problem. In the patent CN102382278B entitled "aqueous polyurethane resin and its preparation method and application" of xuchuan chemistry, a wet solidification process is disclosed, in which an aqueous inorganic ionic compound solution is used as an aqueous solidification solution, and the characteristic that aqueous polyurethane resin is easy to break emulsion when meeting strong electrolyte is utilized to simulate oiliness. In addition, the invention patent of Lanzhou Ketian CN108823679A discloses a wet-process microfiber preparation method, which is also a stepwise process of dipping and salt solidification in a salt solidification tank to simulate an oily wet process. The stepwise solidification process does achieve a wet solidification-like effect and also effectively avoids migration, but requires an additional solidification tank and produces a correspondingly large amount of wastewater. In addition, patent CN109134819A "preparation of aqueous polyurethane resin for impregnation of fixed island microfiber synthetic leather" by boston discloses an amphoteric aqueous polyurethane resin, wherein the resin structure contains both anionic and cationic groups, and can be cured and molded without being completely dried, which is also a solution to migration.
Further, Japanese patent CN200880116175.1 discloses a method for producing an artificial leather using a water-based urethane resin composition for artificial leather, a method for producing an artificial leather, and an artificial leather, wherein a water-based urethane resin having a heat-sensitive coagulation effect is prepared by using a nonionic surfactant as an emulsifier by utilizing the property that polyoxyethylene ether has a cloud point at a high temperature, and the heat-sensitivity of the water-based urethane resin is utilized to prevent the migration of the resin to the surface. However, the production process of the nonionic surfactant externally emulsified waterborne polyurethane resin is difficult to control, the particle size of the obtained emulsion is large, the stability is poor, and the nonionic surfactant seriously influences the water resistance and high temperature resistance of the resin.
Chinese patent application No. CN101994263B, patent No. CN101994263B, discloses a method for producing a leather material, in which a fiber base material is impregnated with a mixed solution containing a carboxylic acid and/or carboxylic ester urethane resin, an ammonium salt of an inorganic acid, and water, and then dried to obtain a leather material. However, the inorganic acid ammonium salt and the sodium hydroxide used for alkali decrement can generate chemical reaction to produce sodium sulfate and ammonia gas, so the method can only be suitable for the leather manufacturing process without decrement and can not be suitable for the production of microfiber synthetic leather.
In addition, some thickening agents are adopted to improve the viscosity of the slurry to prevent migration in the drying process, but the adoption of the thickening agents and the improvement of the viscosity inevitably affect the slurry permeation to a certain degree, and especially for a high-gram-weight dense woven base material, the balance of permeation and migration control through the thickening agents is difficult to achieve. The invention discloses waterborne polyurethane microfiber synthetic leather and a preparation method thereof, and discloses a microfiber leather preparation method disclosed in patent No. CN107956134A, which refers to a method of microwave drying, wherein microwave heating is rapid, and microwave is expected to be beneficial to controlling resin migration, but microwave equipment is high in cost and difficult to use as common drying equipment.
From the above, it can be seen that controlling the migration of the aqueous polyurethane resin to both sides in the drying process, i.e. controlling the distribution of the polyurethane resin, is important for the processing of the aqueous microfiber, but the existing process technologies all have certain disadvantages.
Disclosure of Invention
The technical problem to be solved by the present invention is to overcome the defects of the prior art, and to provide a method for processing aqueous microfiber synthetic leather for preventing migration of impregnated resin, wherein a low-concentration monovalent electrolyte solution is used as a coagulant aid, and is matched with an aqueous polyurethane resin to form an impregnated resin slurry, the impregnated resin slurry has a thermal gelation property, the temperature is increased, the viscosity of the slurry is rapidly increased to form gel, the resin can be solidified at a corresponding position before moisture is not volatilized, the purpose of fixing the resin before complete drying is achieved, the migration phenomenon which is difficult to avoid during ordinary hot air drying is effectively prevented, and the method is applicable to a wider range.
Therefore, the invention adopts the following technical scheme: an impregnation processing technology of water-based microfiber synthetic leather comprises the following steps:
1) dissolving the univalent electrolyte with deionized water, and preparing a univalent electrolyte solution with the mass concentration of 0.5-2% as a coagulant aid;
2) according to the mass ratio of the waterborne polyurethane resin to the coagulant aid of 100: uniformly mixing the waterborne polyurethane resin and the coagulant aid in a ratio of 15-100 to obtain waterborne polyurethane resin slurry;
3) carrying out a padding process on the superfine fiber non-woven fabric and the aqueous polyurethane resin slurry to obtain a padded superfine fiber non-woven fabric;
4) and pre-solidifying the padded superfine fiber non-woven fabric through a low-medium temperature hot air oven, and drying the padded superfine fiber non-woven fabric through a high-temperature oven to obtain the impregnated superfine fiber non-woven fabric.
The obtained microfiber-impregnated non-woven fabric is treated by the processes of ordinary weight reduction, dyeing, reduction cleaning, after finishing and the like to obtain microfiber leather.
In the industry, the migration phenomenon in the impregnation and drying process of the water-based microfiber synthetic leather is known in the industry, generally, a commonly adopted countermeasure in the industry is to adopt a thickening agent to improve the viscosity of slurry so as to prevent the migration in the drying process, but the adoption of the thickening agent and the improvement of the viscosity inevitably influence the permeation of the slurry to a certain extent, and especially for a high-gram-weight dense woven base material, the balance of the permeation and the migration is difficult to control through the thickening agent. In addition, there is also reported an aqueous pseudo-wet salt coagulation process, in which an aqueous resin is impregnated and then passed through a salt coagulation tank, and a divalent electrolyte salt is usually selected, but the coagulation effect is also achieved, but the generation of waste water in the salt coagulation tank is increased.
The impregnation resin slurry (namely, the aqueous polyurethane resin slurry) has the characteristics of low viscosity at room temperature, good fluidity and wettability and can fully permeate into the microfiber nonwoven fabric, but the impregnation resin slurry has the characteristic of thermal gelation, the temperature is increased, the viscosity of the slurry is rapidly increased to gel, the resin can be solidified at a corresponding position before the moisture is not volatilized, the purpose of fixing the resin before complete drying is achieved, and the migration phenomenon which is difficult to avoid during ordinary hot air drying can be fully prevented.
Further, in step 1), the monovalent electrolyte is one or more of sodium chloride, potassium chloride, sodium sulfate, potassium sulfate, sodium phosphate and potassium phosphate.
Further, in the step 2), the aqueous polyurethane resin is an electrolyte-sensitive aqueous emulsion.
Furthermore, the aqueous polyurethane resin is preferably a carboxylic acid type aqueous polyurethane resin, and the carboxylic acid type hydrophilic monomer accounts for 2.0-2.6% of the total resin.
Further, in the step 3), the padding process is a multi-padding and multi-rolling process.
Further, in step 3), the padding process is at least a 3-padding 3-rolling process.
Further, in the step 3), the padding process controls the weight ratio of the dry weight gain of the polyurethane resin to the weight of the base fabric to be 0.2-0.4: 1, preferably 0.25 to 0.35: 1.
further, in the step 4), the pre-solidification process comprises a gradient heating step of 3-5min × 50-60 ℃ and 2-5min × 75-85 ℃.
Further, in the step 4), the drying process comprises a gradient heating step of 3-5min × 100-120 ℃ and 1-3min × 140-150 ℃.
Further, the drying in step 4) may be performed by a simple oven, but is not limited to oven drying, and more efficient drying methods such as microwave drying and infrared drying may also be used.
The invention has the following beneficial effects:
according to the thermal gelation scheme provided by the invention, the electrolyte liquid is added into the impregnation slurry, the gelation behavior is triggered by temperature, and the adopted electrolyte coagulant aid has low concentration and small dosage, so that the wastewater amount is small. Meanwhile, the impregnation slurry does not contain a thickening agent, the penetration and wetting performance of the impregnation slurry is not affected, meanwhile, a pre-gelling process is adopted, the resin is solidified before water is not volatilized at a lower temperature, and migration is effectively avoided. Therefore, the invention is a more economical and convenient aqueous microfiber impregnation processing technology, and is particularly suitable for processing thick and dense microfiber leather.
Drawings
FIG. 1 is a graph of migration of a product obtained in example 1 of the present invention by SEM observation;
FIG. 2 is a graph of migration of a product obtained in example 2 of the present invention by SEM observation;
FIG. 3 is a graph of migration of the product obtained in example 3 of the present invention by SEM observation;
FIG. 4 is a graph of migration of a product obtained in example 4 of the present invention by SEM observation;
FIG. 5 is a graph of migration of the product obtained in example 5 of the present invention by SEM observation;
FIG. 6 is a graph of migration of a product obtained in example 6 of the present invention by SEM observation;
FIG. 7 is a graph of migration of the product obtained in example 7 of the present invention by SEM observation;
FIG. 8 is a graph showing migration of a product obtained in comparative example 1 of the present invention by SEM observation;
FIG. 9 is a graph showing migration observed by SEM of a product obtained in comparative example 2 of the present invention.
FIG. 10 is a graph showing migration of a product obtained in comparative example 3 of the present invention by SEM observation.
Detailed Description
The present invention is illustrated by the following specific examples, which include but are not limited to these examples.
Example 1
The unit gram weight of the PET/COPET type island-fixed non-woven fabric is 350g/m2And cutting the non-woven base cloth with the weight of 10g for later use. 0.4g of NaCl, 40g of deionized water is fully dissolved to obtain a 1% NaCl aqueous solution, 100g of 35% solid content aqueous polyurethane resin TF-3906 (hydrophilic group content 2.6%) is added, and the mixture is uniformly mixed and added into an immersion tank. Immersing 10g of non-woven fabric into an impregnation tank, adopting a 3-dipping 3-rolling process, scraping resin on the surface of the non-woven fabric, controlling the liquid carrying rate to be 118% -122%, obtaining a wet pulp non-woven fabric, placing the wet pulp non-woven fabric into a setting machine, presetting according to a gradient temperature-rising program of 60 ℃ 3min → 85 ℃ 2min, sending the wet pulp non-woven fabric into a high-temperature setting machine after presetting, completely drying according to a gradient temperature-rising program of 100 ℃ 3min → 150 ℃ 1min, and obtaining the impregnated superfine fiber non-woven fabric. The superfine fiber leather can be obtained after the obtained superfine fiber impregnated non-woven fabric is treated by the processes of conventional weight reduction, dyeing, reduction cleaning, after finishing and the like.
Example 2
PA/COPET type island-fixed non-woven fabric with unit gram weight of 300g/m2And cutting the non-woven base cloth with the weight of 10g for later use. 1.5g of KCl, fully dissolved by 75g of deionized water to obtain a 2% KCl aqueous solution, added into 100g of aqueous polyurethane resin TF-678 (hydrophilic group content is 2.1%) with solid content of 35%, uniformly mixed and added into an immersion tank. Soaking 10g of prepared non-woven fabric into a soaking tank, adopting a 4-soaking 4-rolling process, scraping resin on the surface of the non-woven fabric, controlling the liquid carrying rate to be 123% -127% to obtain a wet pulp non-woven fabric, placing the wet pulp non-woven fabric into a setting machine, presetting according to a gradient temperature-raising program of 60 ℃ for 2min → 80 ℃ for 3min, sending the wet pulp non-woven fabric into a high-temperature setting machine after presetting, raising the temperature according to a gradientAnd (3) performing temperature program of 100 ℃ for 2min → 140 ℃ for 2min, and completely drying to obtain the superfine fiber impregnated non-woven fabric. The superfine fiber leather can be obtained after the obtained superfine fiber impregnated non-woven fabric is treated by the processes of conventional weight reduction, dyeing, reduction cleaning, after finishing and the like.
Example 3
PA/COPET type island-fixed non-woven fabric with unit gram weight of 200g/m2And cutting the non-woven base cloth with the weight of 10g for later use. 0.24gNa2SO4And dissolved sufficiently in 16g of deionized water to obtain 1.5% Na2SO4Adding the aqueous solution into 100g of aqueous polyurethane resin TF-678 with solid content of 35%, uniformly mixing, and adding into an immersion tank. Immersing 10g of non-woven fabric into an impregnation tank, adopting a 3-dipping 3-rolling process, scraping resin on the surface of the non-woven fabric, controlling the liquid carrying rate to be 81% -85%, obtaining a wet pulp non-woven fabric, placing the wet pulp non-woven fabric into a setting machine, presetting according to a gradient temperature rise program of 50 ℃ for 3min → 75 ℃ for 2min, sending the wet pulp non-woven fabric into a high-temperature setting machine after presetting, completely drying according to a gradient temperature rise program of 100 ℃ for 3min → 150 ℃ for 1min, and obtaining the impregnated superfine fiber non-woven fabric. The superfine fiber leather can be obtained after the obtained superfine fiber impregnated non-woven fabric is treated by the processes of conventional weight reduction, dyeing, reduction cleaning, after finishing and the like.
Example 4
PA/COPET type island-fixed non-woven fabric with unit gram weight of 200g/m2And cutting the non-woven base cloth with the weight of 10g for later use. 1.25g K2SO4Dissolved sufficiently in 50g of deionized water to give 2.5% K2SO4Adding the aqueous solution into 100g of aqueous polyurethane resin TF-678 with solid content of 35%, uniformly mixing, and adding into an immersion tank. Immersing 10g of non-woven fabric into an impregnation tank, adopting a 3-immersion 3-rolling process, scraping resin on the surface of the non-woven fabric, controlling the liquid carrying rate to be 85% -90%, obtaining a wet pulp non-woven fabric, placing the wet pulp non-woven fabric into a setting machine, presetting according to a gradient temperature rise program of 50 ℃ for 5min → 75 ℃ for 5min, sending the wet pulp non-woven fabric into a high-temperature setting machine after presetting, completely drying according to a gradient temperature rise program of 100 ℃ for 5min → 140 ℃ for 3min, and obtaining the impregnated superfine fiber non-woven fabric. The obtained superfine fiber impregnated non-woven fabric can be processed by the processes of conventional weight reduction, dyeing, reduction cleaning, after finishing and the like to obtain superfine fibersAnd (5) vitamin leather.
Example 5
The unit gram weight of the PET/COPET type island-fixed non-woven fabric is 350g/m2And cutting the non-woven base cloth with the weight of 10g for later use. 0.5gNa3PO4Fully dissolved by 100g of deionized water to obtain 0.5 percent of Na3PO4Adding the aqueous solution into 100g of aqueous polyurethane resin TF-3906 with the solid content of 35%, uniformly mixing, and then adding into an immersion tank. Immersing 10g of non-woven fabric into an impregnation tank, adopting a 3-dipping 3-rolling process, scraping resin on the surface of the non-woven fabric, controlling the liquid carrying rate to be 168% -172%, obtaining a wet pulp non-woven fabric, placing the wet pulp non-woven fabric into a setting machine, presetting according to a gradient temperature rise program of 60 ℃ for 3min → 80 ℃ for 4min, sending the wet pulp non-woven fabric into a high-temperature setting machine after presetting, completely drying according to a gradient temperature rise program of 120 ℃ for 5min → 150 ℃ for 3min, and obtaining the impregnated superfine fiber non-woven fabric. The superfine fiber leather can be obtained after the obtained superfine fiber impregnated non-woven fabric is treated by the processes of conventional weight reduction, dyeing, reduction cleaning, after finishing and the like.
Example 6
The unit gram weight of the PET/COPET type island-fixed non-woven fabric is 280g/m2And cutting the non-woven base cloth with the weight of 10g for later use. 0.1g K3PO4Dissolved sufficiently in 20g of deionized water to give 0.5% K3PO4Adding the aqueous solution into 100g of aqueous polyurethane resin TF-3906 with the solid content of 35%, uniformly mixing, and then adding into an immersion tank. Immersing 10g of non-woven fabric into an impregnation tank, adopting a 3-dipping 3-rolling process, scraping resin on the surface of the non-woven fabric, controlling the liquid carrying rate to be 135-140%, obtaining a wet pulp non-woven fabric, placing the wet pulp non-woven fabric into a setting machine, presetting according to a gradient temperature rise program of 55 ℃ 4min → 80 ℃ 3min, sending the wet pulp non-woven fabric into a high-temperature setting machine after presetting, completely drying according to a gradient temperature rise program of 110 ℃ 3min → 140 ℃ 3min, and obtaining the impregnated superfine fiber non-woven fabric. The superfine fiber leather can be obtained after the obtained superfine fiber impregnated non-woven fabric is treated by the processes of conventional weight reduction, dyeing, reduction cleaning, after finishing and the like.
Example 7
The unit gram weight of the PET/COPET type island-fixed non-woven fabric is 350g/m2And cutting the non-woven base cloth with the weight of 10g for later use.1.5g NaCl, 100g deionized water is fully dissolved to obtain 1.5% NaCl aqueous solution, 100g 50% solid content aqueous polyurethane resin Impranil 1068 is added, mixed evenly and added into the soaking tank. Immersing 10g of non-woven fabric into an impregnation tank, adopting a 3-dipping 3-rolling process, scraping resin on the surface of the non-woven fabric, controlling the liquid carrying rate to be 118% -122%, obtaining a wet pulp non-woven fabric, placing the wet pulp non-woven fabric into a setting machine, presetting according to a gradient temperature-rising program of 60 ℃ 3min → 85 ℃ 2min, sending the wet pulp non-woven fabric into a high-temperature setting machine after presetting, completely drying according to a gradient temperature-rising program of 100 ℃ 3min → 150 ℃ 1min, and obtaining the impregnated superfine fiber non-woven fabric. The superfine fiber leather can be obtained after the obtained superfine fiber impregnated non-woven fabric is treated by the processes of conventional weight reduction, dyeing, reduction cleaning, after finishing and the like.
Comparative example 1
The unit gram weight of the PET/COPET type island-fixed non-woven fabric is 350g/m2And cutting the non-woven base cloth with the weight of 10g for later use. 40g of deionized water is added into 100g of 35% solid content aqueous polyurethane resin TF-3906, and the mixture is added into a soaking tank after being uniformly mixed. Immersing 10g of non-woven fabric into an impregnation tank, adopting a 3-dipping 3-rolling process, scraping resin on the surface of the non-woven fabric, controlling the liquid carrying rate to be 118% -122%, obtaining a wet pulp non-woven fabric, placing the wet pulp non-woven fabric into a setting machine, presetting according to a gradient temperature-rising program of 60 ℃ 3min → 85 ℃ 2min, sending the wet pulp non-woven fabric into a high-temperature setting machine after presetting, completely drying according to a gradient temperature-rising program of 100 ℃ 3min → 150 ℃ 1min, and obtaining the impregnated superfine fiber non-woven fabric. The superfine fiber leather can be obtained after the obtained superfine fiber impregnated non-woven fabric is treated by the processes of conventional weight reduction, dyeing, reduction cleaning, after finishing and the like.
Comparative example 2
PA/COPET type island-fixed non-woven fabric with unit gram weight of 300g/m2And cutting the non-woven base cloth with the weight of 10g for later use. 75g of deionized water is added into 100g of aqueous polyurethane resin TF-678 with the solid content of 35 percent, and the mixture is added into a soaking tank after being uniformly mixed. Soaking 10g of prepared non-woven fabric into a soaking tank, adopting a 4-soaking 4-rolling process, scraping resin on the surface of the non-woven fabric, controlling the liquid carrying rate to be 123% -127% to obtain a wet pulp non-woven fabric, placing the wet pulp non-woven fabric into a setting machine, heating the wet pulp non-woven fabric at 60 ℃ for 2min → 80 ℃ for 3min according to a gradient heating program,pre-shaping, sending into a high-temperature shaping machine after pre-shaping, and completely drying according to a gradient temperature-rise program of 100 ℃ for 2min → 140 ℃ for 2min to obtain the impregnated superfine fiber non-woven fabric. The superfine fiber leather can be obtained after the obtained superfine fiber impregnated non-woven fabric is treated by the processes of conventional weight reduction, dyeing, reduction cleaning, after finishing and the like.
Comparative example 3
The unit gram weight of the PET/COPET type island-fixed non-woven fabric is 350g/m2And cutting the non-woven base cloth with the weight of 10g for later use. 100g of deionized water is added into 100g of 50% solid content waterborne polyurethane resin Impranil 1068, and the mixture is added into a soaking tank after being uniformly mixed. Immersing 10g of non-woven fabric into an impregnation tank, adopting a 3-dipping 3-rolling process, scraping resin on the surface of the non-woven fabric, controlling the liquid carrying rate to be 118% -122%, obtaining a wet pulp non-woven fabric, placing the wet pulp non-woven fabric into a setting machine, presetting according to a gradient temperature-rising program of 60 ℃ 3min → 85 ℃ 2min, sending the wet pulp non-woven fabric into a high-temperature setting machine after presetting, completely drying according to a gradient temperature-rising program of 100 ℃ 3min → 150 ℃ 1min, and obtaining the impregnated superfine fiber non-woven fabric. The superfine fiber leather can be obtained after the obtained superfine fiber impregnated non-woven fabric is treated by the processes of conventional weight reduction, dyeing, reduction cleaning, after finishing and the like.
And (3) observing migration conditions:
the microfiber leather sample prepared in the embodiment is sampled, and SEM photograph results of migration conditions of the sample bottle are shown in the figure by adopting SEM.
Statistics of migration observations
| Example numbering | Migration situation | Comparative example no | Migration situation |
| 1 | Is not obvious | 1 | Is obvious |
| 2 | Is not obvious | 2 | Is obvious |
| 3 | Is not obvious | ||
| 4 | Is not obvious | ||
| 5 | Is not obvious | ||
| 6 | Is not obvious | ||
| 7 | Slight swimming movement | 3 | Is obvious |
From the comparison results, the low-concentration electrolyte thermally-induced coagulation aiding scheme provided by the invention can effectively avoid the occurrence of migration, and meanwhile, the nonuniform wetting and penetration caused by the low viscosity of the working solution is fully avoided. In addition, as can be seen from example 7 and comparative example 3, the low-concentration electrolyte thermal-assisted coagulation scheme provided by the invention is effective for most of microfiber-impregnated emulsions, but the specific effect has a certain correlation with the electrolyte resistance level of the corresponding emulsion, and the migration prevention effect of the low-concentration electrolyte thermal-assisted coagulation provided by the invention is correspondingly reduced for the emulsion with better electrolyte resistance.
Claims (10)
1. An impregnation processing technology of water-based microfiber synthetic leather is characterized by comprising the following steps:
1) dissolving the univalent electrolyte with deionized water, and preparing a univalent electrolyte solution with the mass concentration of 0.5-2% as a coagulant aid;
2) according to the mass ratio of the waterborne polyurethane resin to the coagulant aid of 100: uniformly mixing the waterborne polyurethane resin and the coagulant aid in a ratio of 15-100 to obtain waterborne polyurethane resin slurry;
3) carrying out a padding process on the superfine fiber non-woven fabric and the aqueous polyurethane resin slurry to obtain a padded superfine fiber non-woven fabric;
4) and pre-solidifying the padded superfine fiber non-woven fabric through a low-medium temperature hot air oven, and drying the padded superfine fiber non-woven fabric through a high-temperature oven to obtain the impregnated superfine fiber non-woven fabric.
2. The impregnation processing process of the aqueous microfiber synthetic leather according to claim 1, wherein in step 1), the monovalent electrolyte is one or more of sodium chloride, potassium chloride, sodium sulfate, potassium sulfate, sodium phosphate, and potassium phosphate.
3. The impregnation processing process of the aqueous microfiber synthetic leather according to claim 1 or 2, wherein in step 2), the aqueous polyurethane resin is an electrolyte-sensitive aqueous emulsion.
4. The impregnation processing process of the waterborne microfiber synthetic leather according to claim 3, wherein in step 2), the waterborne polyurethane resin is a carboxylic acid type waterborne polyurethane resin, and the carboxylic acid type hydrophilic monomer accounts for 2.0 to 2.6% of the total resin.
5. The impregnation processing process of the waterborne microfiber synthetic leather according to claim 1 or 2, wherein in step 3), the padding process is a multi-dip multi-rolling process.
6. The impregnation processing process of the waterborne microfiber synthetic leather according to claim 5, wherein in step 3), the padding process is at least a 3-in-3 process.
7. The impregnation processing process of the water-based microfiber synthetic leather according to claim 1 or 2, wherein in the step 3), the padding process controls the ratio of the dry weight gain of the polyurethane resin to the weight of the base fabric to be 0.2-0.4: 1.
8. the impregnation processing process of the water-based microfiber synthetic leather according to claim 7, wherein in step 3), the padding process controls the ratio of the dry weight gain of the polyurethane resin to the weight of the base fabric to be 0.25 to 0.35: 1.
9. the impregnation processing process of the waterborne microfiber synthetic leather according to claim 1 or 2, wherein in step 4), the pre-coagulation process comprises a gradient temperature rise step of 60 ℃ for 3-5min and 80 ℃ for 2-5 min.
10. The impregnation processing process of the water-based microfiber synthetic leather according to claim 1 or 2, wherein in step 4), the drying process comprises a gradient temperature rise step of 5min 100 ℃ and 3-5min 150 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010296472.1A CN111455687B (en) | 2020-04-15 | 2020-04-15 | Impregnation processing technology of water-based microfiber synthetic leather |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010296472.1A CN111455687B (en) | 2020-04-15 | 2020-04-15 | Impregnation processing technology of water-based microfiber synthetic leather |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111455687A true CN111455687A (en) | 2020-07-28 |
| CN111455687B CN111455687B (en) | 2022-09-16 |
Family
ID=71684586
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010296472.1A Active CN111455687B (en) | 2020-04-15 | 2020-04-15 | Impregnation processing technology of water-based microfiber synthetic leather |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111455687B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112726224A (en) * | 2020-12-24 | 2021-04-30 | 上海华峰超纤科技股份有限公司 | Preparation method of waterborne polyurethane base fabric and product thereof |
| CN113417150A (en) * | 2021-07-08 | 2021-09-21 | 江苏聚杰微纤科技集团股份有限公司 | High-solid-content environment-friendly PU suede leather and preparation method thereof |
| CN117552245A (en) * | 2023-11-14 | 2024-02-13 | 上海华峰超纤科技股份有限公司 | Preparation method of water-based polyurethane superfiber base cloth |
| CN119711206A (en) * | 2024-12-26 | 2025-03-28 | 江苏华峰超纤材料有限公司 | A method for preparing highly wear-resistant waterborne polyurethane double suede microfiber leather |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105178055A (en) * | 2015-10-15 | 2015-12-23 | 四川大学 | Water-saving superfine fiber synthetic leather base cloth impregnation method based on cationic water-based polyurethane |
| CN106192449A (en) * | 2016-08-17 | 2016-12-07 | 福建鑫发无纺布有限责任公司 | A kind of production method of full water-based environment-friendly microfiber leather |
| CN106868880A (en) * | 2017-04-10 | 2017-06-20 | 合肥科天水性科技有限责任公司 | A kind of aqueous polyurethane imitates woven fabric and its manufacture method |
| CN107956134A (en) * | 2017-11-28 | 2018-04-24 | 浙江昶丰新材料有限公司 | Aqueous polyurethane superfine fiber synthetic leather and preparation method thereof |
-
2020
- 2020-04-15 CN CN202010296472.1A patent/CN111455687B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105178055A (en) * | 2015-10-15 | 2015-12-23 | 四川大学 | Water-saving superfine fiber synthetic leather base cloth impregnation method based on cationic water-based polyurethane |
| CN106192449A (en) * | 2016-08-17 | 2016-12-07 | 福建鑫发无纺布有限责任公司 | A kind of production method of full water-based environment-friendly microfiber leather |
| CN106868880A (en) * | 2017-04-10 | 2017-06-20 | 合肥科天水性科技有限责任公司 | A kind of aqueous polyurethane imitates woven fabric and its manufacture method |
| CN107956134A (en) * | 2017-11-28 | 2018-04-24 | 浙江昶丰新材料有限公司 | Aqueous polyurethane superfine fiber synthetic leather and preparation method thereof |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112726224A (en) * | 2020-12-24 | 2021-04-30 | 上海华峰超纤科技股份有限公司 | Preparation method of waterborne polyurethane base fabric and product thereof |
| CN112726224B (en) * | 2020-12-24 | 2022-07-15 | 上海华峰超纤科技股份有限公司 | Preparation method of waterborne polyurethane base fabric and product thereof |
| CN113417150A (en) * | 2021-07-08 | 2021-09-21 | 江苏聚杰微纤科技集团股份有限公司 | High-solid-content environment-friendly PU suede leather and preparation method thereof |
| CN117552245A (en) * | 2023-11-14 | 2024-02-13 | 上海华峰超纤科技股份有限公司 | Preparation method of water-based polyurethane superfiber base cloth |
| CN117552245B (en) * | 2023-11-14 | 2026-01-27 | 上海华峰超纤科技股份有限公司 | Preparation method of waterborne polyurethane microfiber base cloth |
| CN119711206A (en) * | 2024-12-26 | 2025-03-28 | 江苏华峰超纤材料有限公司 | A method for preparing highly wear-resistant waterborne polyurethane double suede microfiber leather |
| CN119711206B (en) * | 2024-12-26 | 2025-11-07 | 江苏华峰超纤材料有限公司 | Preparation method of high-wear-resistance waterborne polyurethane double-suede microfiber leather |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111455687B (en) | 2022-09-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111455687B (en) | Impregnation processing technology of water-based microfiber synthetic leather | |
| CN111041850B (en) | Preparation method of water-based superfine fiber synthetic leather | |
| CN101713153A (en) | Production technology of double-faced cotton fabric | |
| DE60225449T2 (en) | SUEDE ARTIFICIAL LEATHER AND METHOD FOR THE PRODUCTION THEREOF | |
| CN105133315A (en) | Finishing agent composition for cotton-silk fabrics and processing method of cotton-silk easy-care shirt | |
| CN103774457A (en) | Preparation method of continuous-fiber microfiber leather | |
| CN105200802A (en) | Preparation method of fragrant light-weight thin wool fabric with health function | |
| CN111926579B (en) | Fluorine-free anti-siphon high-density synthetic leather and production method thereof | |
| CN104695236A (en) | Method for producing water-based polyurethane synthetic leather | |
| WO2017219596A1 (en) | Wet transfer printing method for milk protein fiber/cotton fiber interwoven fabric | |
| CN106223058A (en) | A kind of light aging resisting and the manufacture method of wear-resisting waterborne suede super fiber leather | |
| CN104674562B (en) | The method preparing island superfine fiber PU leather base cloth using addition type three-proof finishing agent | |
| CN113652788A (en) | Preparation method of fluorine-free waterproof tent fabric | |
| CN116005462B (en) | Preparation method of imitation leather waterborne polyurethane microfiber base cloth | |
| CN105401451A (en) | Production method of high-performance suede superfine fiber synthetic leather for clothing | |
| CN108201278A (en) | A kind of preparation method of bamboo fibre summer sleeping mat | |
| CN106245338B (en) | Island ultrafine fiber suede of soft scratch resistance and preparation method thereof | |
| CN109487530A (en) | A kind of moisture absorption heating fabric production technology with antibacterial flame-retardant function | |
| CN112900096B (en) | Preparation method of full-aqueous sneaker fabric based on regenerated fiber substrate | |
| CN111270328A (en) | Three-proofing viscose fiber and preparation method thereof | |
| CN109355921B (en) | Microfiber leather processing technology | |
| CN107012605A (en) | A kind of environment-friendly type embroidery cloth for heating cracking | |
| CN108823997A (en) | A kind of processing method of solvent-free imitative first layer lether super fiber leather | |
| CN109098001A (en) | A kind of anhydrous fibrillation treatment method of Lyocell fibers | |
| JP3504793B2 (en) | Moisture-permeable waterproof coating fabric and method for producing the same |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |