CN111021089B - Super-fiber bass full-water filling method - Google Patents
Super-fiber bass full-water filling method Download PDFInfo
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- CN111021089B CN111021089B CN201911390047.2A CN201911390047A CN111021089B CN 111021089 B CN111021089 B CN 111021089B CN 201911390047 A CN201911390047 A CN 201911390047A CN 111021089 B CN111021089 B CN 111021089B
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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
- 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
- D06N3/147—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 characterised by the isocyanates used
- D06N3/148—(cyclo)aliphatic polyisocyanates
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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
- D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
- D06N3/0002—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the substrate
- D06N3/0004—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the substrate using ultra-fine two-component fibres, e.g. island/sea, or ultra-fine one component fibres (< 1 denier)
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- 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
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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
- 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
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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
- 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
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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
- D06N2205/00—Condition, form or state of the materials
- D06N2205/02—Dispersion
- D06N2205/023—Emulsion, aqueous dispersion, latex
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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
- D06N2209/10—Properties of the materials having mechanical properties
- D06N2209/103—Resistant to mechanical forces, e.g. shock, impact, puncture, flexion, shear, compression, tear
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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
- D06N2209/16—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
- D06N2211/12—Decorative or sun protection articles
- D06N2211/28—Artificial leather
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Wood Science & Technology (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Dispersion Chemistry (AREA)
- Paints Or Removers (AREA)
- Polyurethanes Or Polyureas (AREA)
Abstract
The invention discloses a microfiber bass full-aqueous filling method, which comprises the steps of coating waterborne polyurethane on release paper, pre-drying at the temperature of 50-60 ℃, then adhering microfiber bass on waterborne polyurethane slurry after dyeing and buffing treatment, and simultaneously completely drying to obtain microfiber leather; the aqueous polyurethane slurry is prepared by taking aqueous polyurethane as a base material and adding an accelerator, a flatting agent and other auxiliary agents; the waterborne polyurethane is prepared by taking toluene-2, 4-diisocyanate as polyisocyanate, and the polymer polyol is prepared by ethylene glycol, 2-methyl oxirane and 2- ((allyloxy) methyl) oxirane, and a mixture of 2, 2-trifluoroethyl acrylate, N-aminoethyl-3-aminopropylmethyldimethoxysilane and di (3, 4-epoxycyclohexylmethyl) adipic acid is selected as an accelerator; the finally prepared microfiber leather has large tensile load, tearing load and peeling load, and can meet the requirements of actual production and life.
Description
Technical Field
The invention relates to the technical field of synthetic leather, in particular to a microfiber bass full-water filling method.
Background
Natural leather, which cannot meet the increasing demand of people due to the limitation of resources, is widely used as a substitute of natural leather, namely synthetic leather, due to the characteristics of good physical properties, hand feeling, appearance and the like. The superfine fiber synthetic leather is the latest synthetic leather product developed in recent years, and represents the main direction of the synthetic leather technology development. The superfine fiber synthetic leather is obtained by filling polyurethane with a microporous structure with superfine fiber non-woven fabric with a three-dimensional reticular structure as a reinforcing material. The superfine fiber synthetic leather can be compared favorably with natural leather in aspects of internal microstructure, appearance texture, physical characteristics, wearing comfort and the like; but also is better than natural leather in the aspects of mechanical strength, chemical resistance, uniformity, shape retention and the like. At present, the superfine fiber synthetic leather is widely applied to various fields such as high-grade sports shoes, cases, clothes, automotive interiors and the like, and shows wide development prospects.
At present, in the production of superfine fiber synthetic leather, the prepared superfine fiber base is dyed and subjected to buffing treatment, and finally the corresponding superfine fiber leather is prepared by using solvent type polyurethane to carry out veneering treatment; however, the solvent type polyurethane contains a large amount of organic solvents such as N, N-Dimethylformamide (DMF), and the like, so the organic solvents can cause serious environmental pollution and even influence the body health of people; therefore, the water-based polyurethane is a trend for industry development to replace solvent-based polyurethane.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide the microfiber bass full-aqueous filling method, the method is veneered by using aqueous polyurethane, so that the microfiber leather is green and environment-friendly, and the prepared microfiber leather has better tearing load and tensile load.
In order to achieve the purpose, the invention provides the following technical scheme: a microfiber bass full-water filling method comprises the following steps:
the method comprises the following steps: coating aqueous polyurethane slurry on release paper, and pre-drying at 50-60 ℃ for 30-60s;
step two: then, sticking the microfiber bass on the waterborne polyurethane slurry, and completely drying at the temperature of 100-140 ℃ for 2-4min; after complete drying, preparing microfiber leather;
the aqueous polyurethane slurry comprises the following substances in parts by weight:
80 parts of waterborne polyurethane;
3 parts of an accelerant;
2 parts of a thickening agent;
3 parts of a leveling agent;
and 1 part of a defoaming agent.
As a further improvement of the invention, the waterborne polyurethane comprises the following components in parts by weight:
7 parts of toluene-2, 4-diisocyanate;
60 parts of deionized water;
20 parts of polymer polyol;
2 parts of S- (-) -3-tert-butylamino-1, 2-propanediol;
3 parts of 2, 5-hexanediol;
3 parts of triethanolamine;
0.3 part of dibutyltin dilaurate.
As a further improvement of the invention, the polymer polyol has the structural formula
The polymer polyol has a number average molecular weight of 500 to 2000.
As a further improvement of the present invention, the polymer polyol is formed by reacting ethylene glycol, 2-methyl oxirane and 2- ((allyloxy) methyl) oxirane;
which is of the formula
As a further improvement of the invention, the preparation method of the polymer polyol comprises the steps of adding ethylene glycol, 2-methyl oxirane, 2- ((allyloxy) methyl) oxirane and initiator benzhydryl potassium into a reaction vessel filled with solvent tetrahydrofuran under the protection of nitrogen, stirring and mixing, reacting at the temperature of 60-70 ℃ after uniform mixing, and reacting for 20-25h; and after the reaction is finished, filtering and purifying to obtain the polymer polyol.
As a further improvement of the invention, the preparation method of the waterborne polyurethane comprises the following steps: preparing raw materials according to the set weight parts, adding toluene-2, 4-diisocyanate, polymer polyol and dibutyltin dilaurate into a reactor, stirring and mixing, reacting for 4 hours at 110-130 ℃ after uniformly mixing, then adding S- (-) -3-tert-butylamino-1, 2-propanediol and 2, 5-hexanediol, and continuing to react for 3 hours; then reducing the temperature to 60 ℃, adding triethanolamine and continuing to react for 1 hour; and then adding deionized water to react for 1 hour under the condition that the rotating speed is 600r/min to obtain the waterborne polyurethane.
As a further improvement of the invention, the accelerator is a mixture of 2, 2-trifluoroethyl acrylate, N-aminoethyl-3-aminopropylmethyldimethoxysilane and bis (3, 4-epoxycyclohexylmethyl) adipic acid in a mass ratio of 3.
As a further improvement of the invention, the thickener is hydroxyethyl cellulose.
As a further improvement of the invention, the leveling agent is a mixture of (ethylene glycol) methyl ether acrylate and gamma-mercaptopropyltriethoxysilane, and the mass ratio of the leveling agent is 1.
As a further improvement of the invention, the defoamer is polydimethylsiloxane.
The invention has the beneficial effects that: coating waterborne polyurethane on release paper, pre-drying at the temperature of 50-60 ℃, enabling the waterborne polyurethane slurry to be in a semi-dry state, then adhering the dyed and ground microfiber bass to the waterborne polyurethane slurry, and enabling the microfiber bass to be fully contacted with the waterborne polyurethane slurry, so that part of the waterborne polyurethane slurry can penetrate into fiber gaps inside the microfiber bass, thereby improving various mechanical properties of the product, and simultaneously, completely drying, and obtaining the microfiber leather prepared by the invention after drying; in the whole preparation process, the waterborne polyurethane is used, no solvent type polyurethane is used, the whole system does not contain DMF, no toxic and harmful gas is generated, no health hazard is generated to operators, and the polyurethane is more green, environment-friendly, healthy and safe; the aqueous polyurethane slurry is prepared by taking aqueous polyurethane as a base material and adding an accelerator, a flatting agent and other auxiliaries;
as one of creativity of the invention, the waterborne polyurethane takes toluene-2, 4-diisocyanate as a polyisocyanate, and S- (-) -3-tert-butylamino-1, 2-propylene glycol and 2, 5-hexanediol as small molecular polyols, and the polymer polyol is prepared from ethylene glycol, 2-methyloxirane and 2- ((allyloxy) methyl) oxirane, and the molecular structural formula of the waterborne polyurethane is shown in the specification
The number average molecular weight is 500-2000; the polymer polyol is polyether polyol, a molecular chain contains a plurality of ether bonds and also contains an active group of carbon-carbon double bonds, and the polymer polyol is easy to react with other substances; the aqueous polyurethane has the advantages that on one hand, the aqueous polyurethane plays a role in adhesion, so that the prepared microfiber leather has a large force stripping load, and on the other hand, the aqueous polyurethane extends into fiber gaps inside microfiber bass, so that the tensile load and the tearing load of the microfiber leather are greatly improved; in addition, an accelerator is added into the aqueous slurry, and a mixture of 2, 2-trifluoroethyl acrylate, N-aminoethyl-3-aminopropylmethyldimethoxysilane and bis (3, 4-epoxycyclohexylmethyl) adipic acid is selected on the accelerator, so that under the synergistic action of the three substances, on one hand, the aqueous polyurethane can be better filled into fiber gaps in the microfiber bass, and the tensile load and the tearing load of the microfiber leather are improved; on the other hand, when the accelerant enters the fiber gaps inside the super-fibrates, the tensile load and the tearing load of the super-fibrates can be further promoted.
The finally prepared microfiber leather has large tensile load, tearing load and peeling load, and can meet the requirements of actual production and life.
Detailed Description
Example 1 (preparation of Polymer polyol)
The preparation method of the polymer polyol comprises the steps of adding 1g of ethylene glycol, 10g of 2-methyl ethylene oxide, 20g of 2- ((allyloxy) methyl) ethylene oxide and 0.3g of initiator benzhydryl potassium into a reaction vessel filled with 100ml of solvent tetrahydrofuran under the protection of nitrogen, stirring and mixing, reacting at 65 ℃ after uniform mixing, and reacting for 24 hours; and after the reaction is finished, filtering and purifying to obtain the polymer polyol.
Which is of the formula
The structural formula of the polymer polyol is shown in the specification
Example 2 (preparation of waterborne polyurethane)
The waterborne polyurethane comprises the following substances in parts by weight:
7 parts of toluene-2, 4-diisocyanate;
60 parts of deionized water;
20 parts of polymer polyol;
2 parts of S- (-) -3-tert-butylamino-1, 2-propanediol;
3 parts of 2, 5-hexanediol;
3 parts of triethanolamine;
0.3 part of dibutyltin dilaurate.
The preparation method of the waterborne polyurethane comprises the following steps:
preparing raw materials according to the set weight parts, adding toluene-2, 4-diisocyanate, polymer polyol and dibutyltin dilaurate into a reactor, stirring and mixing, uniformly mixing, reacting for 4 hours at 120 ℃, adding S- (-) -3-tert-butylamino-1, 2-propanediol and 2, 5-hexanediol, and continuing to react for 3 hours; then reducing the temperature to 60 ℃, adding triethanolamine and continuing to react for 1h; and then adding deionized water to react for 1 hour under the condition that the rotating speed is 600r/min to obtain the waterborne polyurethane.
Example 3
A microfiber bass full-water filling method is characterized by comprising the following steps: the method comprises the following steps:
the method comprises the following steps: coating aqueous polyurethane slurry on release paper, and pre-drying at 55 ℃ for 45s;
step two: then, sticking the microfiber bass on the waterborne polyurethane slurry, and completely drying at the temperature of 120 ℃ for 3min; after complete drying, preparing microfiber leather;
the aqueous polyurethane slurry comprises the following substances in parts by weight:
80 parts of waterborne polyurethane;
3 parts of an accelerant;
2 parts of a thickening agent;
3 parts of a leveling agent;
and 1 part of a defoaming agent.
The aqueous polyurethane was prepared from example 2;
the accelerator is a mixture of 2, 2-trifluoroethyl acrylate, N-aminoethyl-3-aminopropylmethyldimethoxysilane and bis (3, 4-epoxycyclohexylmethyl) adipic acid, and the mass ratio of the accelerator to the bis (3, 4-epoxycyclohexylmethyl) adipic acid is 3.
The thickening agent is hydroxyethyl cellulose.
The leveling agent is a mixture of (ethylene glycol) methyl ether acrylate and gamma-mercaptopropyltriethoxysilane, and the mass ratio of the leveling agent is 1.
The defoaming agent is polydimethylsiloxane.
Comparative example 1
A microfiber bass full-water filling method is characterized by comprising the following steps: the method comprises the following steps:
the method comprises the following steps: coating aqueous polyurethane slurry on release paper, and pre-drying at 55 ℃ for 45s;
step two: then, sticking the microfiber bass on the waterborne polyurethane slurry, and completely drying at the temperature of 120 ℃ for 3min; after complete drying, preparing microfiber leather;
the aqueous polyurethane slurry comprises the following substances in parts by weight:
80 parts of waterborne polyurethane;
3 parts of an accelerator;
2 parts of a thickening agent;
3 parts of a leveling agent;
and 1 part of a defoaming agent.
Wherein the waterborne polyurethane is purchased from Shanghai Rui solidification chemical company Limited;
the accelerant is a mixture of 2, 2-trifluoroethyl acrylate, N-aminoethyl-3-aminopropylmethyldimethoxysilane and bis (3, 4-epoxycyclohexylmethyl) adipic acid, and the mass ratio of the accelerant to the adipic acid is 3.
The thickening agent is hydroxyethyl cellulose.
The leveling agent is a mixture of (ethylene glycol) methyl ether acrylate and gamma-mercaptopropyltriethoxysilane, and the mass ratio of the leveling agent to the gamma-mercaptopropyltriethoxysilane is 1.
The defoaming agent is polydimethylsiloxane.
Performance test
Measuring the tensile load and the tearing load of the test sample by using a universal testing machine; and the peeling load of the test sample is detected according to the national standard GB/T8949-1995;
| performance of | Example 4 | Comparative example 1 |
| Tensile load/N | 152 | 129 |
| Tear load/N | 45 | 31 |
| Peeling load 3CM/N | 35 | 24 |
The table shows that the microfiber leather prepared by the invention has larger tensile load, tearing load and peeling load, so that the microfiber leather prepared by the invention has excellent mechanical property and can meet the requirements of actual production and life.
The invention relates to a microfiber bass full-aqueous filling method, which comprises the steps of coating waterborne polyurethane on release paper, pre-drying at the temperature of 50-60 ℃ to enable the waterborne polyurethane slurry to be in a semi-dry state, then adhering the microfiber bass subjected to dyeing and buffing treatment to the waterborne polyurethane slurry, fully contacting the microfiber bass with the waterborne polyurethane slurry to enable part of the waterborne polyurethane slurry to penetrate into fiber gaps inside the microfiber bass, improving various mechanical properties of a product, completely drying, and drying to obtain the microfiber leather prepared by the method; in the whole preparation process, the waterborne polyurethane is used, no solvent type polyurethane is used, the whole system does not contain DMF, no toxic and harmful gas is generated, no health hazard is generated to operators, and the polyurethane is more green, environment-friendly, healthy and safe; the aqueous polyurethane slurry is prepared by taking aqueous polyurethane as a base material and adding an accelerator, a flatting agent and other auxiliaries; as one of creativity of the invention, the waterborne polyurethane takes toluene-2, 4-diisocyanate as a polyisocyanate, and S- (-) -3-tert-butylamino-1, 2-propylene glycol and 2, 5-hexanediol as small molecular polyols, and the polymer polyol is prepared from ethylene glycol, 2-methyloxirane and 2- ((allyloxy) methyl) oxirane, and the molecular structural formula of the waterborne polyurethane is shown in the specification
The number average molecular weight is 500-2000; the polymer polyol is polyether polyol, a molecular chain contains a plurality of ether bonds and also contains an active group of carbon-carbon double bonds, and the polymer polyol is easy to react with other substances; the aqueous polyurethane has the advantages that on one hand, the aqueous polyurethane plays a role in adhesion, so that the prepared microfiber leather has a large force stripping load, and on the other hand, the aqueous polyurethane extends into fiber gaps inside microfiber bass, so that the tensile load and the tearing load of the microfiber leather are greatly improved; in addition, the aqueous slurry of the invention is added with an accelerant, and a mixture of 2, 2-trifluoroethyl acrylate, N-aminoethyl-3-aminopropyl methyl dimethoxy silane and di (3, 4-epoxy cyclohexyl methyl) adipic acid is selected on the accelerant, and the three substances are synergisticUnder the same action, on one hand, the waterborne polyurethane can be better filled into fiber gaps inside the microfiber bass, so that the tensile load and the tearing load of the microfiber leather are improved; on the other hand, when the accelerator enters into the fiber space inside the super-fibber, the tensile load and tear load of the super-fibber can be further accelerated.
The finally prepared microfiber leather has large tensile load, tearing load and peeling load, and can meet the requirements of actual production and life.
The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and adaptations to those skilled in the art without departing from the principles of the present invention should also be considered as within the scope of the present invention.
Claims (8)
1. A microfiber bass full-water filling method is characterized by comprising the following steps: the method comprises the following steps:
the method comprises the following steps: coating aqueous polyurethane slurry on release paper, and pre-drying at 50-60 ℃ for 30-60s;
step two: then, sticking the microfiber bass on the waterborne polyurethane slurry, and completely drying at the temperature of 100-140 ℃ for 2-4min; after complete drying, preparing microfiber leather;
the aqueous polyurethane slurry comprises the following substances in parts by weight:
80 parts of waterborne polyurethane;
3 parts of an accelerator;
2 parts of a thickening agent;
3 parts of a leveling agent;
1 part of a defoaming agent;
the waterborne polyurethane comprises the following substances in parts by weight:
7 parts of toluene-2, 4-diisocyanate; 60 parts of deionized water; 20 parts of polymer polyol;
2 parts of S- (-) -3-tert-butylamino-1, 2-propanediol; 3 parts of 2, 5-hexanediol; 3 parts of triethanolamine;
0.3 part of dibutyltin dilaurate;
the structural formula of the polymer polyol is shown in the specification
The polymer polyol has a number average molecular weight of 500 to 2000.
2. The microfiber bass full-aqueous filling method according to claim 1, wherein:
the polymer polyol is formed by the reaction of ethylene glycol, 2-methyl oxirane and 2- ((allyloxy) methyl) oxirane;
which is of the formula
3. The microfiber bass full-aqueous filling method according to claim 2, wherein: the preparation method of the polymer polyol comprises the steps of adding ethylene glycol, 2-methyl ethylene oxide, 2- ((allyloxy) methyl) ethylene oxide and an initiator benzhydryl potassium into a reaction vessel filled with a solvent tetrahydrofuran under the protection of nitrogen, stirring and mixing, reacting at the temperature of 60-70 ℃ after uniformly mixing, and reacting for 20-25h; and after the reaction is finished, filtering and purifying to obtain the polymer polyol.
4. The microfiber bass full-aqueous filling method according to claim 3, wherein: the preparation method of the waterborne polyurethane comprises the following steps: preparing raw materials according to the set weight parts, adding toluene-2, 4-diisocyanate, polymer polyol and dibutyltin dilaurate into a reactor, stirring and mixing, reacting for 4 hours at 110-130 ℃ after uniformly mixing, then adding S- (-) -3-tert-butylamino-1, 2-propanediol and 2, 5-hexanediol, and continuing to react for 3 hours; then reducing the temperature to 60 ℃, adding triethanolamine and continuing to react for 1h; and then adding deionized water to react for 1 hour under the condition that the rotating speed is 600r/min to obtain the waterborne polyurethane.
5. The microfiber bass full-aqueous filling method according to claim 4, wherein: the accelerant is a mixture of 2, 2-trifluoroethyl acrylate, N-aminoethyl-3-aminopropylmethyldimethoxysilane and bis (3, 4-epoxycyclohexylmethyl) adipic acid, and the mass ratio of the accelerant to the adipic acid is 3.
6. The microfiber bass full-aqueous filling method according to claim 5, wherein: the thickening agent is hydroxyethyl cellulose.
7. The microfiber bass full-aqueous filling method according to claim 6, wherein: the leveling agent is a mixture of (ethylene glycol) methyl ether acrylate and gamma-mercaptopropyltriethoxysilane, and the mass ratio of the leveling agent to the gamma-mercaptopropyltriethoxysilane is 1.
8. The microfiber bass full-aqueous filling method according to claim 7, wherein: the defoaming agent is polydimethylsiloxane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911390047.2A CN111021089B (en) | 2019-12-30 | 2019-12-30 | Super-fiber bass full-water filling method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911390047.2A CN111021089B (en) | 2019-12-30 | 2019-12-30 | Super-fiber bass full-water filling method |
Publications (2)
| Publication Number | Publication Date |
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| CN111021089A CN111021089A (en) | 2020-04-17 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101666043A (en) * | 2009-09-15 | 2010-03-10 | 烟台万华超纤股份有限公司 | Waterborne polyurethane coating transfer synthetic leather and manufacturing method |
| JP2018127758A (en) * | 2018-03-20 | 2018-08-16 | 三菱ケミカル株式会社 | Polyurethane for synthetic leather |
| CN110117912A (en) * | 2019-04-08 | 2019-08-13 | 温州大学 | A kind of aqueous polyurethane for woven fabric bass |
| CN110295503A (en) * | 2019-05-13 | 2019-10-01 | 福建禾欣中裕新材料有限公司 | A kind of preparation method of waterborne polyurethane synthetic leather |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101666043A (en) * | 2009-09-15 | 2010-03-10 | 烟台万华超纤股份有限公司 | Waterborne polyurethane coating transfer synthetic leather and manufacturing method |
| JP2018127758A (en) * | 2018-03-20 | 2018-08-16 | 三菱ケミカル株式会社 | Polyurethane for synthetic leather |
| CN110117912A (en) * | 2019-04-08 | 2019-08-13 | 温州大学 | A kind of aqueous polyurethane for woven fabric bass |
| CN110295503A (en) * | 2019-05-13 | 2019-10-01 | 福建禾欣中裕新材料有限公司 | A kind of preparation method of waterborne polyurethane synthetic leather |
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