CN113026376B - Preparation method of slurry for producing high-physical-property waterborne polyurethane base - Google Patents
Preparation method of slurry for producing high-physical-property waterborne polyurethane base Download PDFInfo
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- 239000004814 polyurethane Substances 0.000 title claims abstract description 46
- 229920002635 polyurethane Polymers 0.000 title claims abstract description 45
- 239000002002 slurry Substances 0.000 title claims abstract description 28
- 238000002360 preparation method Methods 0.000 title claims abstract description 14
- 238000003756 stirring Methods 0.000 claims abstract description 19
- 239000000945 filler Substances 0.000 claims abstract description 17
- 229920005749 polyurethane resin Polymers 0.000 claims abstract description 17
- 238000005187 foaming Methods 0.000 claims abstract description 13
- 239000004088 foaming agent Substances 0.000 claims abstract description 11
- 239000002270 dispersing agent Substances 0.000 claims abstract description 10
- 239000002562 thickening agent Substances 0.000 claims abstract description 10
- 239000006260 foam Substances 0.000 claims abstract description 9
- 239000003381 stabilizer Substances 0.000 claims abstract description 9
- 239000002253 acid Substances 0.000 claims abstract description 6
- 239000011248 coating agent Substances 0.000 claims abstract description 6
- 238000000576 coating method Methods 0.000 claims abstract description 6
- 238000005336 cracking Methods 0.000 claims abstract description 6
- 239000000049 pigment Substances 0.000 claims abstract description 6
- 150000003839 salts Chemical class 0.000 claims abstract description 6
- 239000012752 auxiliary agent Substances 0.000 claims abstract description 5
- 238000007711 solidification Methods 0.000 claims abstract description 5
- 230000008023 solidification Effects 0.000 claims abstract description 5
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical group [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 claims description 10
- 239000011575 calcium Substances 0.000 claims description 10
- 229910052791 calcium Inorganic materials 0.000 claims description 10
- 239000000843 powder Substances 0.000 claims description 10
- 238000000034 method Methods 0.000 claims description 8
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 claims description 6
- GRTOGORTSDXSFK-XJTZBENFSA-N ajmalicine Chemical compound C1=CC=C2C(CCN3C[C@@H]4[C@H](C)OC=C([C@H]4C[C@H]33)C(=O)OC)=C3NC2=C1 GRTOGORTSDXSFK-XJTZBENFSA-N 0.000 claims description 6
- 239000007864 aqueous solution Substances 0.000 claims description 6
- 230000008569 process Effects 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- 239000000126 substance Substances 0.000 claims description 5
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 claims description 4
- 229920003171 Poly (ethylene oxide) Polymers 0.000 claims description 4
- 239000011734 sodium Substances 0.000 claims description 4
- 229910052708 sodium Inorganic materials 0.000 claims description 4
- 239000002904 solvent Substances 0.000 claims description 4
- 239000007787 solid Substances 0.000 claims description 3
- 230000002194 synthesizing effect Effects 0.000 claims description 3
- LSNNMFCWUKXFEE-UHFFFAOYSA-M Bisulfite Chemical compound OS([O-])=O LSNNMFCWUKXFEE-UHFFFAOYSA-M 0.000 claims description 2
- 238000003672 processing method Methods 0.000 claims description 2
- 239000004094 surface-active agent Substances 0.000 claims 3
- 150000001732 carboxylic acid derivatives Chemical class 0.000 claims 1
- 239000002649 leather substitute Substances 0.000 abstract description 12
- 239000002736 nonionic surfactant Substances 0.000 abstract description 12
- 238000004519 manufacturing process Methods 0.000 abstract description 7
- 238000005265 energy consumption Methods 0.000 abstract description 3
- 230000008719 thickening Effects 0.000 abstract 1
- MUBZPKHOEPUJKR-UHFFFAOYSA-N Oxalic acid Chemical compound OC(=O)C(O)=O MUBZPKHOEPUJKR-UHFFFAOYSA-N 0.000 description 11
- 239000010985 leather Substances 0.000 description 11
- 230000000704 physical effect Effects 0.000 description 10
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 4
- 238000001035 drying Methods 0.000 description 4
- 235000006408 oxalic acid Nutrition 0.000 description 4
- 239000002759 woven fabric Substances 0.000 description 4
- 239000004744 fabric Substances 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 241000282414 Homo sapiens Species 0.000 description 2
- WCUXLLCKKVVCTQ-UHFFFAOYSA-M Potassium chloride Chemical compound [Cl-].[K+] WCUXLLCKKVVCTQ-UHFFFAOYSA-M 0.000 description 2
- FEWJPZIEWOKRBE-UHFFFAOYSA-N Tartaric acid Natural products [H+].[H+].[O-]C(=O)C(O)C(O)C([O-])=O FEWJPZIEWOKRBE-UHFFFAOYSA-N 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 150000001735 carboxylic acids Chemical class 0.000 description 2
- -1 drying Substances 0.000 description 2
- 239000004745 nonwoven fabric Substances 0.000 description 2
- 230000035699 permeability Effects 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 239000011780 sodium chloride Substances 0.000 description 2
- 235000002906 tartaric acid Nutrition 0.000 description 2
- 239000011975 tartaric acid Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- 241000321398 Dermatolepis dermatolepis Species 0.000 description 1
- FEWJPZIEWOKRBE-JCYAYHJZSA-N Dextrotartaric acid Chemical compound OC(=O)[C@H](O)[C@@H](O)C(O)=O FEWJPZIEWOKRBE-JCYAYHJZSA-N 0.000 description 1
- 239000004721 Polyphenylene oxide Substances 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- DBMJMQXJHONAFJ-UHFFFAOYSA-M Sodium laurylsulphate Chemical compound [Na+].CCCCCCCCCCCCOS([O-])(=O)=O DBMJMQXJHONAFJ-UHFFFAOYSA-M 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000013400 design of experiment Methods 0.000 description 1
- 239000000839 emulsion Substances 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000011068 loading method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- CTSLXHKWHWQRSH-UHFFFAOYSA-N oxalyl chloride Substances ClC(=O)C(Cl)=O CTSLXHKWHWQRSH-UHFFFAOYSA-N 0.000 description 1
- 229920000570 polyether Polymers 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 239000001103 potassium chloride Substances 0.000 description 1
- 235000011164 potassium chloride Nutrition 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 239000007858 starting material Substances 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
-
- 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
- D06N3/005—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 obtained by blowing or swelling agent
-
- 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
- D06N3/0056—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
- D06N2209/00—Properties of the materials
- D06N2209/10—Properties of the materials having mechanical properties
- D06N2209/103—Resistant to mechanical forces, e.g. shock, impact, puncture, flexion, shear, compression, tear
-
- 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
- D06N2209/00—Properties of the materials
- D06N2209/12—Permeability or impermeability properties
- D06N2209/121—Permeability to gases, adsorption
- D06N2209/123—Breathable
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- 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
- D06N2209/00—Properties of the materials
- D06N2209/12—Permeability or impermeability properties
- D06N2209/126—Permeability to liquids, absorption
-
- 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
- D06N2209/00—Properties of the materials
- D06N2209/16—Properties of the materials having other properties
- D06N2209/1664—Releasability
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- 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)
- Inorganic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Wood Science & Technology (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention provides a preparation method of slurry for producing high-physical-property waterborne polyurethane base, belonging to the field of manufacturing of waterborne polyurethane artificial leather. A preparation method of slurry for producing high-physical-property waterborne polyurethane base comprises the following steps: firstly, adding waterborne polyurethane resin into a stirring tank, and adding a filler dispersant at a stirring speed of 200-300 r/min; then reducing the stirring speed to 100-200r/min, adding corresponding filler, continuously stirring, standing for defoaming, transferring into a ton bucket, adding an anti-cracking auxiliary agent, a pigment, a foaming agent, a foam stabilizer, a nonionic surfactant and a thickening agent, and thickening to obtain slurry for producing bass; and finally, adopting acid/salt solidification wet foaming or dry direct coating foaming to produce the bass. The waterborne polyurethane base produced by the slurry prepared by the invention effectively solves the problems of dry-wet peeling and low flexing resistance of the waterborne polyurethane base, improves the production efficiency, reduces the energy consumption and simultaneously makes the prepared waterborne polyurethane base more breathable and moisture permeable.
Description
Technical Field
The invention belongs to the field of manufacturing of waterborne polyurethane artificial leather, and particularly relates to a preparation method of slurry for producing high-physical-property waterborne polyurethane base.
Background
Natural leather is widely used for producing daily necessities and industrial products due to its excellent natural characteristics, but as the world population grows, the demand of human beings for leather is multiplied, and the demand of people cannot be met by the limited amount of natural leather for a long time. To solve this conflict, scientists have begun to research and develop artificial leather and synthetic leather several decades ago to overcome the shortcomings of natural leather.
Polyurethane (PU) coating on fabric surfaces was first introduced in the market in the 50's of the 20 th century, and as of 1964, a PU synthetic leather for use as an upper was developed by dupont, usa. After a set of production lines of 60 ten thousand square meters are built by Japan companies, and after more than 20 years of continuous research and development, the PU synthetic leather is rapidly increased in product quality, variety and yield. The performance of the leather is closer and closer to natural leather, and certain performance even exceeds the natural leather, so that the leather is difficult to distinguish from the natural leather, and the leather occupies an important position in the daily life of human beings.
The aqueous polyurethane is a novel polyurethane system which takes water as a dispersing medium instead of an organic solvent, and the aqueous polyurethane takes water as a solvent, so that the aqueous polyurethane has the advantages of no pollution, safety, reliability, excellent mechanical property, good compatibility, easy modification and the like. However, the physical properties of the waterborne polyurethane base (base: semi-finished artificial leather) products manufactured by the prior art are not high, which is mainly reflected in that the base dry-wet peeling and the flexing resistance are not high and unstable, thereby limiting the application field of the waterborne polyurethane base.
Disclosure of Invention
The invention provides a preparation method of slurry for producing high-physical-property waterborne polyurethane base, aiming at the problems that the physical properties of waterborne polyurethane base products manufactured by the prior art are not high, and the dry-wet peeling and flexing resistance of the base are poor. Compared with the prior art, the waterborne polyurethane base produced by the slurry prepared by the invention has excellent dry and wet stripping and flexing resistance, improves the production speed, effectively reduces the energy consumption and ensures that the obtained waterborne polyurethane base is more breathable and moisture permeable on the basis of ensuring the physical properties of the product.
The invention provides a preparation method of slurry for producing high-physical-property waterborne polyurethane base, which comprises the following steps:
1) Adding the waterborne polyurethane resin into a stirring tank, adding the filler dispersant at the stirring speed of 200-300r/min, and stirring for 15-20min to obtain a treated substance I;
2) Adding the filler into the treated matter I obtained in the step 1) at a stirring speed of 100-200r/min, stirring for 40-80min, and standing for defoaming to obtain a treated matter II;
3) Transferring the treated substance II obtained in the step 2) into a ton bucket, and adding an anti-cracking auxiliary agent, a pigment, a nonionic surfactant, a foaming agent, a foam stabilizer and a thickening agent to obtain slurry for producing Bass;
wherein the nonionic surfactant comprises alpha-phenyl-omega-hydroxy-polyoxyethylene (CAS No. 9004-78-8) and sodium mono-C16-18-alkyl sulfate (CAS No. 68955-20-4).
Further, the aqueous polyurethane resin in the step 1) is a carboxylic acid type or a sulfonic acid type, the solid content of the aqueous polyurethane resin is 45% -55%, and acetone or water is used as a solvent for production.
Further, the filler dispersant in the step 1) is a calcium powder dispersant, and the addition amount of the calcium powder dispersant is 0.1-0.3% of the mass of the aqueous polyurethane resin.
Further, the filler in the step 2) is calcium powder, and the adding amount of the calcium powder is 30-80% of the mass of the waterborne polyurethane resin in the step 1).
Further, after the treated matter II in the step 3) is transferred into a ton barrel, 0.5-2.0% of anti-cracking auxiliary agent, 0.5-2.0% of pigment, 1-10% of foaming agent, 1-10% of foam stabilizer and 0.2-1.0% of thickening agent are added according to the mass of the waterborne polyurethane resin in the step 1).
Further, the addition amount of the nonionic surfactant in the step 3) is 0.5-2.0% of the mass of the aqueous polyurethane resin in the step 1).
Further, the nonionic surfactant in the step 3) is a mixed aqueous solution containing 1% -5% of alpha-phenyl-omega-hydroxy-polyoxyethylene and 1% -5% of sodium mono-C16-18-alkyl sulfate.
Further, the viscosity of the slurry for producing Bass in the step 3) is 10000-30000cps.
Furthermore, the foaming agent can adopt raw materials commonly used in the field, for example, the foaming agent selected in the embodiment of the invention is an organic silicon modified foaming agent, a stearate foaming agent or a sodium dodecyl sulfate composite foaming agent.
Further, the foam stabilizer can adopt raw materials commonly used in the art, for example, the foam stabilizer selected in the embodiment of the present invention is a silicone polyether emulsion type foam stabilizer.
Further, the thickening agent can adopt raw materials commonly used in the field, for example, the thickening agent selected in the embodiment of the invention is an associative polyurethane thickening agent or an alkali-swellable acrylic thickening agent.
Further, the processing method for synthesizing the waterborne polyurethane base by the slurry for producing the base obtained in the step 3) is a wet foaming base process of acid/salt solidification or a dry direct-coating foaming base process; the wet foaming bass process steps for acid/salt solidification comprise: treating knitted fabric, woven fabric or non-woven fabric with 0.5-2.0% oxalic acid/tartaric acid aqueous solution, drying, coating the slurry on the surface of the knitted fabric, the woven fabric or the non-woven fabric by using an aqueous polyurethane foaming machine, controlling the foaming density to be 0.65-0.80, solidifying in 0.5-3.0% acid (oxalic acid or tartaric acid)/salt (sodium chloride or potassium chloride) aqueous solution, washing, drying and rolling to obtain the aqueous polyurethane base.
Compared with the prior art, the invention has the beneficial effects that:
the amount of filler and nonionic surfactant of the present invention added significantly affects the physical properties of the bass, particularly its peel and flex resistance properties. Under the condition of high requirement on product hand feeling, the nonionic surfactant provides a means for improving the Beth physical properties, and provides an excellent solution for products with high physical properties. In addition, under the condition that the target hand feeling requirement is not high due to the fact that the product is excellent in stripping and flexing resistance, the adding percentage of the filler can be increased, the production speed is improved by about 15%, energy consumption is effectively reduced, the waterborne polyurethane base with higher air permeability and moisture permeability is obtained, the application field of the waterborne polyurethane synthetic leather is widened, and a new progress is made in the aspect of high-end sports shoe leather. For the middle stripping product, the dependence of the traditional waterborne polyurethane synthetic leather on the performance of a foaming machine is reduced; for a high-peel product, the water-based polyurethane synthetic leather bass peel is effectively improved by 10-50%, the blank of the water-based polyurethane synthetic leather high-peel product is filled, and a new solution is added for replacing high-physical-property oily synthetic leather with poor environmental protection.
Detailed Description
The present invention will be further described with reference to specific examples, but the present invention is not limited to the following examples. The process is conventional unless otherwise specified, and the starting materials are commercially available from the open literature.
Example 1
The embodiment provides a preparation method of slurry for producing high-physical-property waterborne polyurethane base, which comprises the following steps:
adding carboxylic acid type waterborne polyurethane resin with 50% of solid content produced by using acetone as a solvent into a stirring tank, adding 0.2% of calcium powder dispersing agent at the stirring speed of 250r/min, stirring for 20min to obtain a treated substance I, adding 30% of calcium powder into the treated substance I at the stirring speed of 150r/min, stirring for 60min, standing, defoaming to obtain a treated substance II, transferring the treated substance II into a ton bucket, and adding 1.2% of anti-cracking assistant, 1.5% of pigment, 0% of nonionic surfactant (the content of alpha-phenyl-omega-hydroxy-polyoxyethylene and sodium mono-C16-18-alkyl sulfate is 3%), 6% of foaming agent, 6% of foam stabilizer and 0.8% of thickening agent to obtain the Bass-producing slurry with the viscosity of 20000 cps.
In particular, the additive amounts are the weight percentage of the added aqueous polyurethane resin.
Synthesizing the slurry for producing the base into the high-physical-property waterborne polyurethane base by utilizing a wet foaming base process of acid/salt solidification: and (2) treating the woven fabric with 1.2% oxalic acid aqueous solution, drying, coating the slurry on the surface of the woven fabric by using an aqueous polyurethane foaming machine, controlling the foaming density to be 0.75, solidifying in 2% oxalic acid/sodium chloride aqueous solution, washing, drying and rolling to obtain the aqueous polyurethane base.
Examples 2 to 30
Examples 2-30 aqueous polyurethane base was obtained according to the following formulation, all with reference to the preparation method of example 1, except that the amount of nonionic surfactant and the amount of calcium powder filler were different, and the design of the test protocol is shown in table 1:
table 1: design of experiments
The bass samples (for example, 0.9cm thick) prepared in examples 1-30 above were tested for peel and flex properties, and the results are shown in Table 2:
table 2: results of peel and flex performance testing
According to the data in the table 2, under the condition of a certain amount of the filler, the stripping and flexing resistance can be improved by 15-25% for every 0.5% of the nonionic surfactant; under the condition of a certain addition amount of the nonionic surfactant, the stripping and flexing resistance performance is reduced by 5-15% for every 10% of the filler. The filler loading of the bass pulp is generally constant in order to obtain a product with the target hand. In summary, the nonionic surfactant provides a means for improving the bass physical properties and provides an excellent solution for products with high physical properties, under the requirements of product hand feel and the like. The waterborne polyurethane base produced by the slurry prepared by the invention has high physical properties, particularly bending resistance, and meets the requirements of high physical properties such as stretching and bending of high-end sports shoes.
The above-described embodiments are only preferred embodiments of the present invention and are not intended to limit the present invention. Various changes and modifications can be made by one skilled in the art, and any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (6)
1. A preparation method of slurry for producing high-physical-property waterborne polyurethane base is characterized by comprising the following steps:
1) Adding the waterborne polyurethane resin into a stirring tank, adding the filler dispersant at the stirring speed of 200-300r/min, and stirring for 15-20min to obtain a treated substance I;
2) Adding the filler into the treated substance I obtained in the step 1) at a stirring speed of 100-200r/min, stirring for 40-80min, and standing for defoaming to obtain a treated substance II; the filler is calcium powder, and the addition amount of the filler is 30-40% of the mass of the waterborne polyurethane resin in the step 1);
3) Transferring the treated substance II obtained in the step 2) into a ton bucket, and adding an anti-cracking auxiliary agent, a pigment, a surfactant, a foaming agent, a foam stabilizer and a thickening agent to obtain slurry for producing Bass; the surfactant is a mixed aqueous solution containing 3% of alpha-phenyl-omega-hydroxy-polyoxyethylene and 3% of sodium mono-C16-18-alkyl sulfate, and the addition amount of the surfactant is 0.5% -2.0% of the mass of the aqueous polyurethane resin in the step 1).
2. The preparation method of the slurry for producing the high-physical-property aqueous polyurethane base according to claim 1, wherein the aqueous polyurethane resin in the step 1) is a carboxylic acid type or a sulfonic acid type, has a solid content of 45% to 55%, and is produced by using acetone or water as a solvent.
3. The preparation method of the slurry for producing the high-physical-property waterborne polyurethane base according to claim 1, wherein the filler dispersant in the step 1) is a calcium powder dispersant, and the addition amount of the calcium powder dispersant is 0.1-0.3% of the mass of the waterborne polyurethane resin.
4. The preparation method of the slurry for producing the high-physical-property waterborne polyurethane base according to claim 1, wherein 0.5-2.0% of anti-cracking auxiliary agent, 0.5-2.0% of pigment, 1-10% of foaming agent, 1-10% of foam stabilizer and 0.2-1.0% of thickening agent are added into the waterborne polyurethane resin according to the mass of the waterborne polyurethane resin in the step 1) after the treatment substance II in the step 3) is transferred into a ton barrel.
5. The method for preparing the slurry for producing the high-physical-property aqueous polyurethane bass according to claim 1, wherein the viscosity of the slurry for producing the bass in the step 3) is 10000-30000cps.
6. The preparation method of the slurry for producing the high-physical-property waterborne polyurethane base according to claim 1, wherein the processing method for producing the slurry for base in the step 3) and then synthesizing the waterborne polyurethane base is a wet foaming base process of acid/salt solidification or a dry direct coating foaming base process.
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