CN117535986A - Polyurethane synthetic leather for waterborne foaming embossing shoes and preparation method thereof - Google Patents
Polyurethane synthetic leather for waterborne foaming embossing shoes and preparation method thereof Download PDFInfo
- Publication number
- CN117535986A CN117535986A CN202311636003.XA CN202311636003A CN117535986A CN 117535986 A CN117535986 A CN 117535986A CN 202311636003 A CN202311636003 A CN 202311636003A CN 117535986 A CN117535986 A CN 117535986A
- Authority
- CN
- China
- Prior art keywords
- aqueous
- polyurethane
- parts
- foaming
- layer
- 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.)
- Pending
Links
- 229920002635 polyurethane Polymers 0.000 title claims abstract description 176
- 239000004814 polyurethane Substances 0.000 title claims abstract description 176
- 238000005187 foaming Methods 0.000 title claims abstract description 76
- 239000002649 leather substitute Substances 0.000 title claims abstract description 40
- 238000004049 embossing Methods 0.000 title claims description 29
- 238000002360 preparation method Methods 0.000 title description 20
- 239000010410 layer Substances 0.000 claims abstract description 76
- 239000002002 slurry Substances 0.000 claims abstract description 76
- 239000002344 surface layer Substances 0.000 claims abstract description 44
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 37
- 239000004744 fabric Substances 0.000 claims abstract description 34
- 239000003431 cross linking reagent Substances 0.000 claims abstract description 25
- 239000002562 thickening agent Substances 0.000 claims abstract description 20
- 229920005749 polyurethane resin Polymers 0.000 claims abstract description 16
- 150000001875 compounds Chemical class 0.000 claims abstract description 14
- 239000006260 foam Substances 0.000 claims abstract description 7
- 239000003381 stabilizer Substances 0.000 claims abstract description 7
- 239000000945 filler Substances 0.000 claims abstract description 4
- 239000012790 adhesive layer Substances 0.000 claims description 49
- 238000001035 drying Methods 0.000 claims description 36
- 239000003795 chemical substances by application Substances 0.000 claims description 33
- 239000011248 coating agent Substances 0.000 claims description 22
- 238000000576 coating method Methods 0.000 claims description 22
- 238000000034 method Methods 0.000 claims description 21
- 230000008569 process Effects 0.000 claims description 18
- 239000011265 semifinished product Substances 0.000 claims description 12
- 238000001816 cooling Methods 0.000 claims description 10
- 239000012948 isocyanate Substances 0.000 claims description 8
- 150000002513 isocyanates Chemical class 0.000 claims description 8
- 150000001718 carbodiimides Chemical class 0.000 claims description 7
- 230000000149 penetrating effect Effects 0.000 claims description 7
- 229920005830 Polyurethane Foam Polymers 0.000 claims description 6
- 238000013329 compounding Methods 0.000 claims description 6
- 239000013530 defoamer Substances 0.000 claims description 6
- 239000011496 polyurethane foam Substances 0.000 claims description 6
- 238000003475 lamination Methods 0.000 claims description 5
- 210000002268 wool Anatomy 0.000 claims description 5
- 238000007789 sealing Methods 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 claims 2
- 239000006265 aqueous foam Substances 0.000 claims 1
- 239000010985 leather Substances 0.000 abstract description 21
- 230000008859 change Effects 0.000 abstract description 8
- 238000007493 shaping process Methods 0.000 abstract description 5
- 238000000059 patterning Methods 0.000 abstract description 4
- 239000000047 product Substances 0.000 description 14
- 230000000052 comparative effect Effects 0.000 description 10
- 239000011347 resin Substances 0.000 description 10
- 230000006872 improvement Effects 0.000 description 9
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 8
- 239000000463 material Substances 0.000 description 8
- 238000003825 pressing Methods 0.000 description 8
- 238000005096 rolling process Methods 0.000 description 7
- 229920005989 resin Polymers 0.000 description 5
- 238000002791 soaking Methods 0.000 description 5
- 229910000019 calcium carbonate Inorganic materials 0.000 description 4
- 229920001971 elastomer Polymers 0.000 description 4
- 238000010030 laminating Methods 0.000 description 4
- 239000000203 mixture Substances 0.000 description 3
- 241000208125 Nicotiana Species 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000002518 antifoaming agent Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000004753 textile Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 230000037303 wrinkles Effects 0.000 description 1
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
- D06N3/145—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 two or more layers of 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
- D06N3/004—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 flocked webs or pile fabrics upon which a resin is applied; Teasing, raising web before resin application
-
- 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
- D06N3/0043—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by their foraminous structure; Characteristics of the foamed layer or of cellular layers
-
- 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
- D06N3/0061—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
-
- 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
- D06N3/0095—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 by inversion technique; by transfer processes
- D06N3/0097—Release surface, e.g. separation sheets; Silicone papers
-
- 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
- D06N2211/10—Clothing
- D06N2211/106—Footwear
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Dispersion Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Wood Science & Technology (AREA)
- Synthetic Leather, Interior Materials Or Flexible Sheet Materials (AREA)
Abstract
The invention relates to a polyurethane synthetic leather for water-based foaming embossed shoes, which comprises a water-based polyurethane surface layer, a water-based polyurethane foaming layer, a water-based polyurethane bonding layer and a base cloth layer which are sequentially arranged from top to bottom, wherein the water-based polyurethane foaming layer is prepared from water-based polyurethane foaming layer slurry, and the water-based polyurethane foaming layer slurry is prepared from the following components in parts by weight: 80-120 parts of aqueous foaming polyurethane resin, 40-60 parts of filler, 3-3.5 parts of compound cross-linking agent, 5-10 parts of aqueous color paste, 3-4 parts of foam stabilizer and 0.8-1.2 parts of aqueous thickener. According to the invention, the compound cross-linking agent is used in the aqueous polyurethane foaming layer, so that the prepared aqueous foaming polyurethane synthetic leather is easier to form patterns, the patterning patterns are good in shaping property, and the hand feeling change of leather products before and after patterning is small.
Description
Technical Field
The invention relates to the technical field of synthetic leather, in particular to polyurethane synthetic leather for waterborne foaming embossed shoes and a preparation method thereof.
Background
The aqueous polyurethane is used as an excellent polymer material, has excellent physical and mechanical properties, and has been widely applied to leather finishing and textile coating. However, the application research time of the aqueous polyurethane on artificial leather and synthetic leather is shorter, the aqueous polyurethane is mainly applied to the surface post-treatment of the synthetic leather at present, and has a certain gap in hydrolysis resistance, temperature resistance, chemical resistance, mechanical property and the like compared with the traditional solvent type synthetic leather, the pattern is difficult to be pressed out by the rear section embossing of the common aqueous polyurethane synthetic leather, the pattern can rebound after the embossing, the pattern shaping effect is poor, and the hand feeling of the product becomes stiff and dead after the embossing.
Disclosure of Invention
Based on the problems in the prior art, the invention aims to provide the polyurethane synthetic leather for the waterborne foaming embossed shoes and the preparation method thereof, and the polyurethane synthetic leather for the waterborne foaming embossed shoes is ecological and environment-friendly, easy to emboss, good in embossing pattern shaping effect and excellent in mechanical property.
In order to achieve the above purpose, the present invention adopts the following technical scheme.
The invention provides polyurethane synthetic leather for waterborne foaming embossed shoes, which comprises a waterborne polyurethane surface layer, a waterborne polyurethane foaming layer, a waterborne polyurethane bonding layer and a base cloth layer which are sequentially arranged from top to bottom, wherein the waterborne polyurethane foaming layer is prepared from waterborne polyurethane foaming layer slurry, and the waterborne polyurethane foaming layer slurry is prepared from the following components in parts by weight: 80-120 parts of aqueous foaming polyurethane resin, 40-60 parts of filler, 3-3.5 parts of compound cross-linking agent, 5-10 parts of aqueous color paste, 3-4 parts of foam stabilizer and 0.8-1.2 parts of aqueous thickener.
According to the invention, the compound cross-linking agent is used in the aqueous polyurethane foaming layer, so that the prepared aqueous foaming polyurethane synthetic leather is easier to form patterns, the patterning patterns are good in shaping property, and the hand feeling change of leather products before and after patterning is small.
As a further improvement of the scheme, the compound cross-linking agent is formed by compounding a carbodiimide cross-linking agent and an isocyanate cross-linking agent according to the mass ratio of 2-2.5:1.
As a further improvement of the above-mentioned aspect of the present invention, the softening point of the aqueous foaming polyurethane resin is 165 ℃.
As a further improvement of the above scheme of the invention, the aqueous polyurethane surface layer is prepared from aqueous polyurethane surface layer slurry, and the aqueous polyurethane surface layer slurry is prepared from the following components in parts by weight: 80-120 parts of aqueous surface layer polyurethane resin, 1-1.5 parts of aqueous flatting agent, 0.4-0.6 part of defoamer, 5-10 parts of aqueous color paste, 2-2.5 parts of aqueous thickener and 2-2.5 parts of aqueous curing agent.
As a further improvement of the above scheme of the present invention, the aqueous polyurethane adhesive layer is prepared from an aqueous polyurethane adhesive layer slurry, and the aqueous polyurethane adhesive layer slurry is prepared from the following components in parts by weight: 80-120 parts of aqueous bonding polyurethane resin, 5-5.5 parts of sealing curing agent, 2-3 parts of penetrating agent and 2-2.5 parts of aqueous thickening agent.
As a further improvement of the scheme, the base cloth layer adopts double-sided napping base cloth, the short nap surface of the double-sided napping base cloth is napped by a napping process, the long nap surface of the double-sided napping base cloth is napped by a napping process, and the short nap surface of the double-sided napping base cloth is attached to the water-based polyurethane adhesive layer.
The invention also provides a preparation method of the polyurethane synthetic leather for the aqueous foaming embossed shoe, which comprises the following steps:
s1, coating aqueous polyurethane surface layer slurry on release paper, and drying to form an aqueous polyurethane surface layer;
s2, coating aqueous polyurethane foaming layer slurry on the aqueous polyurethane surface layer, and drying to form an aqueous polyurethane foaming layer;
s3, coating aqueous polyurethane adhesive layer slurry on the aqueous polyurethane foaming layer, and drying to be semi-dry to form an aqueous polyurethane adhesive layer;
s4, attaching the short wool surface of the base fabric with the water-based polyurethane adhesive layer to form a base fabric layer, solidifying at high temperature, cooling, and stripping the release paper to obtain a semi-finished product;
s5, carrying out post-treatment embossing and embossing treatment on the semi-finished product to obtain the polyurethane synthetic leather for the water-based foaming embossing shoes.
As a further improvement of the above-mentioned aspect of the present invention, in the step S1, the viscosity of the aqueous polyurethane surface layer slurry is 4000-6000cps/35±5 ℃;
and/or coating the aqueous polyurethane surface layer slurry on the release paper after vacuum defoaming for 30min, wherein the coating thickness of the aqueous polyurethane surface layer slurry is 0.10mm.
As a further improvement of the above-mentioned aspect of the present invention, in the step S2, the aqueous polyurethane foam layer slurry has a viscosity of 16000-23000cps/35±5 ℃;
in the step S2, the aqueous polyurethane foaming layer slurry is filtered, foamed to 1.2 times by a foaming machine, and then coated on the aqueous polyurethane surface layer, wherein the coating thickness of the aqueous polyurethane foaming layer slurry is 0.60mm.
As a further improvement of the above-described aspect of the present invention, in the step S3, the aqueous polyurethane adhesive layer slurry has a viscosity of 15000 to 18000cps/35±5 ℃;
and/or in the step S3, the aqueous polyurethane adhesive layer slurry is subjected to vacuum defoaming for 30min, filtered and then coated on the aqueous polyurethane foaming layer, and the coating thickness of the aqueous polyurethane adhesive layer slurry is 0.12mm.
As a further improvement of the above-described aspect of the present invention, in the step S4, the base cloth is attached to the aqueous polyurethane adhesive layer by a lamination roller with a lamination gap of 0.20mm.
Compared with the prior art, the invention has the following beneficial effects:
1. according to the invention, the compound cross-linking agent formed by compounding the carbodiimide cross-linking agent and the isocyanate cross-linking agent is used in the waterborne polyurethane foaming layer, so that the prepared waterborne foaming polyurethane synthetic leather is easier to extrude patterns, the embossing patterns have good shaping property, and the hand feeling change of leather products before and after embossing is small.
2. According to the invention, the penetrating agent is introduced into the aqueous polyurethane adhesive layer, and can increase the wettability of the adhesive layer resin to the polyester base cloth in a semi-dry state; the water-based polyurethane adhesive layer is also introduced with a closed curing agent, the closed curing agent is very stable in normal temperature storage, the temperature is in a range of 110-120 ℃ for slow deblocking and curing reaction, the adhesive force of the water-based adhesive layer resin in a semi-dry state is improved, the temperature is higher than 140 ℃ for fast deblocking and curing, the mechanical property of the adhesive layer resin can be obviously improved after full curing reaction, and the water-based polyurethane adhesive layer is more suitable for being used in footwear products.
3. The invention is manufactured once, has simple process, reduces water resource waste and heat energy consumption, and is more ecological and environment-friendly.
Detailed Description
In order that the invention may be readily understood, a more particular description of the invention will be rendered by reference to specific embodiments that are illustrated below. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.
The reagents and material information involved in the following examples or comparative examples are as follows:
water-based polyurethane resin JF-PDY-519HY, zhejiang Huafeng synthetic resin Co., ltd;
aqueous polyurethane resin DL1016, manufactured by kesi polymer (chinese) limited;
aqueous polyurethane resin1258, produced by the new material science and technology Co., ltd;
the filler is light calcium carbonate, and is produced by Anhuijianjiang nanotechnology Co., ltd;
carbodiimide crosslinking agent XR-2802, manufactured by Kogyo Polymer (China Co., ltd.);
isocyanate cross-linking agent 3852, produced by Shanghai Borino New Material technologies Co., ltd;
the water-based leveling agent A-1 is produced by new materials limited company of Yi Fang Feng in Jian De City;
defoaming agent TEGO810, manufactured by Shanghai Co., ltd;
the water-based black paste WH-907 is produced by Fuke-resistant industry Co., ltd;
aqueous thickener U506, manufactured by Nicotiana Wanhua New Material technology Co., ltd;
aqueous thickener A406, produced by Nicotiana Wanhua New Material technology Co., ltd;
curing agent 166, produced by the new material science and technology Co., ltd;
foam stabilizer EPP-112, produced by Shanghai Co., ltd;
isocyanate type sealing curing agent 3852, manufactured by Shanghai Borino New Material technology Co., ltd;
penetrant BS-F, manufactured by Jiande City forward-flow chemical auxiliary agent Co., ltd.
Example 1
The embodiment provides polyurethane synthetic leather for waterborne foaming embossed shoes, and the preparation method of the polyurethane synthetic leather comprises the following steps of.
S1, coating a layer of aqueous polyurethane surface layer slurry with the thickness of 0.10mm on release paper, putting the slurry into an oven, sequentially drying at 90 ℃, 100 ℃, 110 ℃, 120 ℃ and 135 ℃ and drying and curing to form the aqueous polyurethane surface layer.
In this embodiment, the preparation process of the aqueous polyurethane surface layer slurry is as follows: 100 parts of aqueous polyurethane resin JF-PDY-519HY, 1 part of aqueous flatting agent A-1, 0.6 part of defoamer TEGO810, 8 parts of aqueous black paste WH-907, 2 parts of aqueous thickener U506 and 2.5 parts of curing agent 166 are mixed and stirred uniformly, and vacuum defoamation is carried out for 30min, so that the aqueous polyurethane surface layer slurry with the viscosity of 4500cps/30 ℃ is obtained.
S2, coating a layer of aqueous polyurethane foaming layer slurry with the thickness of 0.60mm on the aqueous polyurethane surface layer, putting the aqueous polyurethane foaming layer slurry into an oven, sequentially drying at 90 ℃, 70 ℃, 80 ℃, 100 ℃, 120 ℃ and 130 ℃ and drying to form the aqueous polyurethane foaming layer.
In this embodiment, the preparation process of the aqueous polyurethane foam layer slurry is as follows: 100 parts of aqueous polyurethane resin DL1016, 40 parts of light calcium carbonate, 3 parts of compound cross-linking agent, 5 parts of aqueous black paste WH-907, 4 parts of foam stabilizer EPP-112 and 0.8 part of aqueous thickener A406 are mixed and stirred uniformly, and the mixture is filtered and foamed to 1.2 times by foaming machine equipment, so that aqueous polyurethane foaming layer slurry with the viscosity of 18000cps/30 ℃ is obtained.
Wherein the compound cross-linking agent is formed by compounding carbodiimide cross-linking agent XR-2802 and isocyanate closed curing agent 3852 according to the mass ratio of 2:1.
S3, coating a layer of aqueous polyurethane adhesive layer slurry with the thickness of 0.12mm on the aqueous polyurethane foaming layer, putting the aqueous polyurethane adhesive layer slurry into an oven, sequentially drying at 105 ℃ and 115 ℃, and drying to be semi-dry to form the aqueous polyurethane adhesive layer.
In this embodiment, the preparation process of the aqueous polyurethane adhesive layer slurry is as follows: 100 parts of aqueous polyurethane resin1258. 5.0 parts of closed curing agent 3852, 3 parts of penetrating agent BS-F and 2.5 parts of water-based thickening agent U506 are mixed and stirred uniformly, vacuum defoamed for 30min, and filtered to obtain the water-based polyurethane adhesive layer slurry with the viscosity of 15000cps/30 ℃.
S4, tightly adhering the short wool surface of the double-sided plush base cloth with the thickness of 0.75mm and the water-based polyurethane adhesive layer by laminating rollers to form a base cloth layer, placing the base cloth layer into an oven, sequentially drying at 120 ℃, 130 ℃, 135 ℃, 145 ℃ and 135 ℃, cooling by a cooling roller, stripping off release paper, and rolling to obtain a semi-finished product.
In this embodiment, the short-hair side of the double-sided napping base cloth is napped by a napping process.
S5, embossing the semi-finished product: embossing by cold pressing process according to the cold pressing rubber roller pattern of S51 with the temperature of 200 ℃ and the vehicle speed of 18 m/min. The finished leather product has full grain, no rebound of the grain and little hand feeling change before and after embossing.
And (3) continuously twisting the leather finished product with the S51 pattern in a twisting section by a twisting machine according to a soaking twisting process, drying and rolling to obtain the polyurethane synthetic leather for the water-based foaming embossed shoe.
Example 2
The embodiment provides polyurethane synthetic leather for waterborne foaming embossed shoes, and the preparation method of the polyurethane synthetic leather comprises the following steps of.
S1, coating a layer of aqueous polyurethane surface layer slurry with the thickness of 0.10mm on release paper, putting the slurry into an oven, sequentially drying at 90 ℃, 100 ℃, 110 ℃, 120 ℃ and 135 ℃ and drying and curing to form the aqueous polyurethane surface layer.
In this embodiment, the preparation process of the aqueous polyurethane surface layer slurry is as follows: 90 parts of aqueous resin JF-PDY-519HY, 1 part of aqueous flatting agent A-1, 0.6 part of defoamer TEGO810, 8 parts of aqueous black paste WH-907, 2 parts of aqueous thickener U506 and 2.0 parts of curing agent 166 are mixed and stirred uniformly, and vacuum defoamed for 30min, so that the aqueous polyurethane surface layer slurry with the viscosity of 4500cps/30 ℃ is obtained.
S2, coating a layer of aqueous polyurethane foaming layer slurry with the thickness of 0.60mm on the aqueous polyurethane surface layer, putting the aqueous polyurethane foaming layer slurry into an oven, sequentially drying at 90 ℃, 70 ℃, 80 ℃, 100 ℃, 120 ℃ and 130 ℃ and drying to form the aqueous polyurethane foaming layer.
In this embodiment, the preparation process of the aqueous polyurethane foam layer slurry is as follows: 100 parts of aqueous polyurethane resin DL1016, 40 parts of light calcium carbonate, 3.3 parts of compound cross-linking agent, 5 parts of aqueous black paste WH-907, 4 parts of foam stabilizer EPP-112 and 0.8 part of aqueous thickener A406 are mixed and stirred uniformly, and the mixture is filtered and foamed to 1.2 times by foaming machine equipment, so that aqueous polyurethane foaming layer slurry with the viscosity of 18000cps/30 ℃ is obtained.
Wherein the compound cross-linking agent is formed by compounding carbodiimide cross-linking agent XR-2802 and isocyanate closed curing agent 3852 according to the mass ratio of 2.3:1.
S3, coating a layer of aqueous polyurethane adhesive layer slurry with the thickness of 0.12mm on the aqueous polyurethane foaming layer, putting the aqueous polyurethane adhesive layer slurry into an oven, sequentially drying at 105 ℃ and 115 ℃, and drying to be semi-dry to form the aqueous polyurethane adhesive layer.
In this embodiment, the preparation process of the aqueous polyurethane adhesive layer slurry is as follows: 110 parts of aqueous polyurethane resin1258. 5.5 parts of sealing curing agent 3852, 3 parts of penetrating agent BS-F and 2.5 parts of aqueous thickener U506 are mixed and stirred uniformly, vacuum defoamed for 30min, and filtered, thus obtaining the aqueous polyurethane adhesive layer slurry with the viscosity of 13000cps/30 ℃.
S4, tightly adhering the short wool surface of the double-sided plush base cloth with the thickness of 0.75mm and the water-based polyurethane adhesive layer by laminating rollers to form a base cloth layer, placing the base cloth layer into an oven, sequentially drying at 120 ℃, 130 ℃, 135 ℃, 145 ℃ and 135 ℃, cooling by a cooling roller, stripping off release paper, and rolling to obtain a semi-finished product.
In this embodiment, the short nap surface of the double-sided napping base fabric is napped by a napping process.
S5, embossing the semi-finished product: the cold pressing process is carried out according to the conditions that the temperature is 200 ℃, the vehicle speed is 18m/min, the cold pressing rubber roller pattern is S51. The finished leather product has full grain, no rebound of the grain and little hand feeling change before and after embossing.
And (3) continuously twisting the leather finished product with the S51 pattern in a twisting section by a twisting machine according to a soaking twisting process, drying and rolling to obtain the polyurethane synthetic leather for the water-based foaming embossed shoe.
Example 3
The embodiment provides polyurethane synthetic leather for waterborne foaming embossed shoes, and the preparation method of the polyurethane synthetic leather comprises the following steps of.
S1, coating a layer of aqueous polyurethane surface layer slurry with the thickness of 0.10mm on release paper, putting the slurry into an oven, sequentially drying at 90 ℃, 100 ℃, 110 ℃, 120 ℃ and 135 ℃ and drying and curing to form the aqueous polyurethane surface layer.
In this embodiment, the preparation process of the aqueous polyurethane surface layer slurry is as follows: 120 parts of aqueous resin JF-PDY-519HY, 1 part of aqueous flatting agent A-1, 0.6 part of defoamer TEGO810, 8 parts of aqueous black paste WH-907, 2 parts of aqueous thickener U506 and 2.5 parts of curing agent 166 are mixed and stirred uniformly, and vacuum defoamed for 30min, so that the aqueous polyurethane surface layer slurry with the viscosity of 6000cps/30 ℃ is obtained.
S2, coating a layer of aqueous polyurethane foaming layer slurry with the thickness of 0.60mm on the aqueous polyurethane surface layer, putting the aqueous polyurethane foaming layer slurry into an oven, sequentially drying at 90 ℃, 70 ℃, 80 ℃, 100 ℃, 120 ℃ and 130 ℃ and drying to form the aqueous polyurethane foaming layer.
In this embodiment, the preparation process of the aqueous polyurethane foam layer slurry is as follows: 100 parts of aqueous polyurethane resin DL1016, 40 parts of light calcium carbonate, 3.5 parts of compound cross-linking agent, 5 parts of aqueous black paste WH-907, 4 parts of foam stabilizer EPP-112 and 0.8 part of aqueous thickener A406 are mixed and stirred uniformly, and the mixture is filtered and foamed to 1.2 times by foaming machine equipment, so that aqueous polyurethane foaming layer slurry with the viscosity of 21000cps/30 ℃ is obtained.
Wherein the compound cross-linking agent is formed by compounding carbodiimide cross-linking agent XR-2802 and isocyanate closed curing agent 3852 according to the mass ratio of 2.5:1.
S3, coating a layer of aqueous polyurethane adhesive layer slurry with the thickness of 0.12mm on the aqueous polyurethane foaming layer, putting the aqueous polyurethane adhesive layer slurry into an oven, sequentially drying at 105 ℃ and 115 ℃, and drying to be semi-dry to form the aqueous polyurethane adhesive layer.
In this embodiment, the preparation process of the aqueous polyurethane adhesive layer slurry is as follows: 100 parts of aqueous polyurethane resin1258. 5.0 parts of closed curing agent 3852, 3 parts of penetrating agent BS-F and 2.5 parts of aqueous thickener U506 are mixed and stirred uniformly, vacuum defoamed for 30min, and filtered, thus obtaining the aqueous polyurethane adhesive layer slurry with the viscosity of 13000cps/30 ℃.
S4, tightly adhering the short wool surface of the double-sided plush base cloth with the thickness of 0.75mm and the water-based polyurethane adhesive layer by laminating rollers to form a base cloth layer, placing the base cloth layer into an oven, sequentially drying at 120 ℃, 130 ℃, 135 ℃, 145 ℃ and 135 ℃, cooling by a cooling roller, stripping off release paper, and rolling to obtain a semi-finished product.
In this embodiment, the short nap surface of the double-sided napping base fabric is napped by a napping process.
S5, embossing the semi-finished product: the cold pressing process is carried out according to the conditions that the temperature is 200 ℃, the vehicle speed is 18m/min, the cold pressing rubber roller pattern is S51. The finished leather product has full grain, no rebound of the grain and little hand feeling change before and after embossing.
And (3) continuously twisting the leather finished product with the S51 pattern in a twisting section by a twisting machine according to a soaking twisting process, drying and rolling to obtain the polyurethane synthetic leather for the water-based foaming embossed shoe.
Comparative example 1
The present comparative example uses the same embodiment as in example 1, except that: the short-hair side of the double-sided napped base cloth in this comparative example was napped by a napping process.
The leather finished product prepared by the comparative example has full grain, no rebound of patterns and little hand feeling change before and after embossing. The embossed leather is embossed by a continuous embossing machine at an embossing section, and the finished product of the water-based embossed polyurethane synthetic leather after embossing is embossed by a soaking embossing process has larger wrinkles.
Comparative example 2
The comparative example provides a polyurethane synthetic leather for waterborne foaming embossed shoes, and the preparation method comprises the following steps:
s1, coating a layer of aqueous polyurethane surface layer slurry with the thickness of 0.10mm on release paper, putting the slurry into an oven, sequentially drying at 90 ℃, 100 ℃, 110 ℃, 120 ℃ and 135 ℃ and drying and curing to form the aqueous polyurethane surface layer.
In the comparative example, the preparation process of the aqueous polyurethane surface layer slurry is as follows: 100 parts of aqueous polyurethane resin JF-PDY-519HY, 1 part of aqueous flatting agent A-1, 0.6 part of defoamer TEGO810, 8 parts of aqueous black paste WH-907, 2 parts of aqueous thickener U506 and 2.5 parts of curing agent 166 are mixed and stirred uniformly, and vacuum defoamation is carried out for 30min, so that the aqueous polyurethane surface layer slurry with the viscosity of 4500cps/30 ℃ is obtained.
S2, coating a layer of aqueous polyurethane adhesive layer slurry with the thickness of 0.12mm on the aqueous polyurethane surface layer, putting the aqueous polyurethane adhesive layer slurry into an oven, sequentially drying at 105 ℃ and 115 ℃, and drying to be semi-dry to form the aqueous polyurethane adhesive layer.
In this embodiment, the preparation process of the aqueous polyurethane adhesive layer slurry is as follows: 100 parts of aqueous polyurethane resin1258. 5.0 parts of closed curing agent 3852, 3 parts of penetrating agent BS-F and 2.5 parts of water-based thickening agent U506 are mixed and stirred uniformly, vacuum defoamed for 30min, and filtered to obtain the water-based polyurethane adhesive layer slurry with the viscosity of 15000cps/30 ℃.
S3, compacting and attaching the commercial aqueous polyurethane crust leather surface layer and the aqueous polyurethane bonding layer through a laminating roller, wherein the lamination gap is 0.70mm, putting the leather surface layer and the aqueous polyurethane bonding layer into an oven, sequentially drying at 120 ℃, 130 ℃, 135 ℃, 145 ℃ and 135 ℃, cooling through a cooling roller after solidification, stripping off release paper, and rolling to obtain a semi-finished product.
In this comparative example, the base cloth of the commercial aqueous polyurethane crust leather was a double-sided napped base cloth, the short napped surface thereof was napped by a napping process, and the short napped surface thereof was bonded with an aqueous polyurethane layer, and the thickness of the aqueous polyurethane layer was the same as that of the aqueous foaming layer of example 1.
S4, embossing the semi-finished product: embossing by cold pressing process according to the cold pressing rubber roller pattern of S51 with the temperature of 200 ℃ and the vehicle speed of 18 m/min.
The leather finished product prepared by the comparative example has different pattern depths and flat pattern particles within the whole range of breadth, after being rolled and naturally stored for one day, the rebound flowers of part of leather surface patterns disappear, and the leather finished product has stiff hand feeling and large change after embossing. The leather with the pressed patterns is processed by a continuous rubbing machine at a rubbing section, the patterns on part of the leather surface are further shallow after rubbing and drying according to a soaking rubbing process, and the rebound of the patterns is eliminated after rubbing small patterns on the leather surface.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "or/and" as used herein includes any and all combinations of one or more of the associated listed items.
The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.
The above examples illustrate only a few embodiments of the invention, which are described in detail and are not to be construed as limiting the scope of the invention. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the invention, which are all within the scope of the invention. Accordingly, the scope of protection of the present invention is to be determined by the appended claims.
Claims (10)
1. The polyurethane synthetic leather for the water-based foaming embossed shoes is characterized by comprising a water-based polyurethane surface layer, a water-based polyurethane foaming layer, a water-based polyurethane bonding layer and a base cloth layer which are sequentially arranged from top to bottom, wherein the water-based polyurethane foaming layer is prepared from water-based polyurethane foaming layer slurry, and the water-based polyurethane foaming layer slurry is prepared from the following components in parts by weight: 80-120 parts of aqueous foaming polyurethane resin, 40-60 parts of filler, 3-3.5 parts of compound cross-linking agent, 5-10 parts of aqueous color paste, 3-4 parts of foam stabilizer and 0.8-1.2 parts of aqueous thickener.
2. The polyurethane synthetic leather for the aqueous foaming embossed shoes according to claim 1, wherein the compound cross-linking agent is formed by compounding a carbodiimide cross-linking agent and an isocyanate cross-linking agent according to a mass ratio of 2-2.5:1;
and/or, the softening point of the aqueous foaming polyurethane resin is 165 ℃.
3. The aqueous foaming embossed polyurethane synthetic leather for shoes according to claim 1, wherein the aqueous polyurethane surface layer is prepared from aqueous polyurethane surface layer slurry, and the aqueous polyurethane surface layer slurry is prepared from the following components in parts by weight: 80-120 parts of aqueous surface layer polyurethane resin, 1-1.5 parts of aqueous flatting agent, 0.4-0.6 part of defoamer, 5-10 parts of aqueous color paste, 2-2.5 parts of aqueous thickener and 2-2.5 parts of aqueous curing agent.
4. The aqueous foaming embossed polyurethane synthetic leather for shoes according to claim 1, wherein the aqueous polyurethane adhesive layer is prepared from aqueous polyurethane adhesive layer slurry, and the aqueous polyurethane adhesive layer slurry is prepared from the following components in parts by weight: 80-120 parts of aqueous bonding polyurethane resin, 5-5.5 parts of sealing curing agent, 2-3 parts of penetrating agent and 2-2.5 parts of aqueous thickening agent.
5. The polyurethane synthetic leather for aqueous foaming embossed shoes according to claim 1, wherein the base cloth layer is a double-sided napping base cloth, the short nap surface of the double-sided napping base cloth is napped by a napping process, and the short nap surface of the double-sided napping base cloth is attached to the aqueous polyurethane adhesive layer.
6. A method for producing the polyurethane synthetic leather for aqueous foaming embossed shoes as set forth in any one of claims 1 to 5, comprising the steps of:
s1, coating aqueous polyurethane surface layer slurry on release paper, and drying to form an aqueous polyurethane surface layer;
s2, coating aqueous polyurethane foaming layer slurry on the aqueous polyurethane surface layer, and drying to form an aqueous polyurethane foaming layer;
s3, coating aqueous polyurethane adhesive layer slurry on the aqueous polyurethane foaming layer, and drying to be semi-dry to form an aqueous polyurethane adhesive layer;
s4, attaching the short wool surface of the base fabric with the water-based polyurethane adhesive layer to form a base fabric layer, solidifying at high temperature, cooling, and stripping the release paper to obtain a semi-finished product;
s5, carrying out post-treatment embossing and embossing treatment on the semi-finished product to obtain the polyurethane synthetic leather for the water-based foaming embossing shoes.
7. The method for preparing a polyurethane synthetic leather for use in aqueous foaming embossed shoes according to claim 6, wherein in the step S1, the viscosity of the aqueous polyurethane surface layer slurry is 4000-6000cps/35±5 ℃.
8. The method of producing an aqueous polyurethane foam synthetic leather for use in embossed shoes according to claim 6, wherein in the step S2, the aqueous polyurethane foam layer slurry has a viscosity of 16000 to 23000cps/35±5 ℃.
9. The method of manufacturing an aqueous foamed embossed polyurethane synthetic leather for shoes according to claim 6, wherein in the step S3, the aqueous polyurethane adhesive layer slurry has a viscosity of 15000-18000cps/35±5 ℃.
10. The method of producing a polyurethane synthetic leather for use in aqueous foam embossed shoes according to claim 6, wherein in step S4, the base fabric and the aqueous polyurethane adhesive layer are bonded by a lamination roller with a lamination gap of 0.20mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311636003.XA CN117535986A (en) | 2023-12-01 | 2023-12-01 | Polyurethane synthetic leather for waterborne foaming embossing shoes and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311636003.XA CN117535986A (en) | 2023-12-01 | 2023-12-01 | Polyurethane synthetic leather for waterborne foaming embossing shoes and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117535986A true CN117535986A (en) | 2024-02-09 |
Family
ID=89784112
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311636003.XA Pending CN117535986A (en) | 2023-12-01 | 2023-12-01 | Polyurethane synthetic leather for waterborne foaming embossing shoes and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117535986A (en) |
-
2023
- 2023-12-01 CN CN202311636003.XA patent/CN117535986A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105350342B (en) | A kind of preparation method of aqueous/solvent-free composite environment-friendly Synthetic Leather | |
| CN102409554B (en) | Foaming synthetic leather manufacturing technology based on waterborne polyurethane (WPU) | |
| CN110592965B (en) | High-foaming high-stripping solvent-free shoe leather and preparation method thereof | |
| CN103410009A (en) | High-breathability superfine fiber polyurethane suede synthetic leather, preparation technology and products prepared from synthetic leather | |
| CN106868880B (en) | Water-based polyurethane imitated microfiber and manufacturing method thereof | |
| US20210017615A1 (en) | Layered Material And Method For Producing A Layered Material | |
| CN103774455A (en) | Water-based polyurethane superfine fiber synthetic leather and preparation method thereof | |
| CN104499293B (en) | A kind of Waterproof Breathable grid PRINTED FABRIC and preparation method thereof | |
| CN102797167A (en) | Method for preparing ultra-fiber napped leather with directed fluff effect | |
| CN106915139A (en) | A kind of production technology of the TPU composite materials of imitative dry method leather | |
| CN101050586A (en) | Method for making foamed printing rag | |
| CN108978247B (en) | Manufacturing method of ecological superfine fiber synthetic leather for automotive interior | |
| CN112391847A (en) | Super-protein skin-feel synthetic leather | |
| CN112760992B (en) | Wear-resistant basketball leather and preparation method thereof | |
| CN117535986A (en) | Polyurethane synthetic leather for waterborne foaming embossing shoes and preparation method thereof | |
| CN110670375B (en) | Environment-friendly conductive synthetic leather for labor protection gloves | |
| CN110685159A (en) | Production method of water-based microfiber synthetic leather | |
| CN111155319A (en) | Superfine fiber synthetic leather using recycled renewable resources and preparation method thereof | |
| CN203807860U (en) | Waterproof and moisture permeable grid printed fabric | |
| CN105755847A (en) | Floor leather based on dermal fiber reclaimed leather and preparation method of floor leather | |
| CN108914620A (en) | A kind of football environmentally friendly super fiber leather and preparation method thereof | |
| CN114737404A (en) | Composite material for waterborne polyurethane shoes and preparation method thereof | |
| CN112376289A (en) | Method for manufacturing super-protein skin-feel synthetic leather | |
| CN112761001A (en) | Environment-friendly space leather and preparation method and application thereof | |
| CN105970661A (en) | Production method for super-hydrophobic superfine fiber synthetic leather |
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 |