CN108103800A - Polyurethane slurry, artificial leather and preparation method thereof - Google Patents
Polyurethane slurry, artificial leather and preparation method thereof Download PDFInfo
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- CN108103800A CN108103800A CN201711297884.1A CN201711297884A CN108103800A CN 108103800 A CN108103800 A CN 108103800A CN 201711297884 A CN201711297884 A CN 201711297884A CN 108103800 A CN108103800 A CN 108103800A
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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
- D06N3/141—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 mixture of two or more polyurethanes in the same layer
-
- 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
- D06N2209/00—Properties of the materials
- D06N2209/16—Properties of the materials having other properties
- D06N2209/1664—Releasability
-
- 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)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Dispersion Chemistry (AREA)
- Synthetic Leather, Interior Materials Or Flexible Sheet Materials (AREA)
Abstract
The present invention relates to a kind of polyurethane slurries, and raw material is prepared including following weight parts：100 110 parts of 30 45 parts of hot melt polyurethane resin, 25 40 parts of modified polyurethane resin, 25 40 parts of polyurethane resin and organic solvent.The invention further relates to a kind of artificial leathers and preparation method thereof.The polyurethane slurry of the present invention and the artificial leather prepared using above-mentioned slurry, have the stripping performance good to PVC release papers mold, overcome the limitation being formerly only available with the dual-purpose paper production SEMIPU of PU/PVC.
Description
Technical field
The present invention relates to artificial leather technology, more particularly to a kind of polyurethane slurry, artificial leather and preparation method thereof.
Background technology
In existing dry method artificial leather coating process, general PVC release papers (mold) can only use Welvic material to apply
Cloth is taken in surface layer in PVC release papers, and coating foamed polyvinyl chloride paste is after high temperature foams, then applies coating medium fitting base fabric, cooling
It removes.Under normal conditions, it is impossible to it is scraped with polyurethane material painting in PVC release papers, when surface layer contacts directly PVC release papers, warp
High temperature foaming is crossed, cladding and release paper can have bad stripping, and causing release paper, (release paper is to may be reused
) stripping breaks and scrap.Therefore, in the prior art, using PU/PVC with dual-purpose paper produce half PU products there are it is of high cost (release paper into
This height) the problem of, and using the dual-purpose release paper mold temperature tolerances of PU/PVC not as good as PVC release papers, the high product life of processing temperature
Release paper has that access times are few, short life during production.
The content of the invention
The technical problems to be solved by the invention are：A kind of polyurethane slurry is provided, is had preferable to PVC release papers
Stripping performance, so as to so that PVC release papers suitable for production half PU (SEMI-PU) artificial leather.
Further, the present invention also provides a kind of artificial leather prepared using above-mentioned polyurethane slurry and its systems
Preparation Method.
In order to solve the above-mentioned technical problem, the technical solution adopted by the present invention is：
A kind of polyurethane slurry prepares raw material including following weight parts：30-45 parts of hot melt polyurethane resin,
100-110 parts of 25-40 parts of modified polyurethane resin, 25-40 parts of polyurethane resin and organic solvent.
A kind of preparation method of artificial leather, the preparation including surface layer, the preparation method of the surface layer are：By above-mentioned modification
Polyurethane slurry is dried coated in PVC release papers under the conditions of 100-140 DEG C, forms surface layer.
A kind of artificial leather is prepared using the preparation method of above-mentioned artificial leather.
The beneficial effects of the present invention are：
(1) modified polyurethane resin is added in polyurethane slurry of the invention, performance can be shelled on Reinforced PVC paper, had
Have it is anti-sticking help release effect, and there is good adherence between bottom PVC slurries, hot melt polyurethane also functions to enhancing stripping
Effect from performance, and modulus is low, can also improve feel.In order to find optimal energy and the good material of polyurethane resin compatibility
Material, applicant pass through experimental verification and know by years of researches and experiment, modified polyurethane resin and hot melt polyurethane
Two kinds of materials of resin be can and the good material of polyurethane resin compatibility, while the special material that can be used again in PVC release papers
Material.Lines sizing plays regulatory role when polyurethane resin is used for adjusting feel and after-processing technology, can be by adjusting content
Ratio obtains the feel and lines of needs；
(2) polyurethane slurry of the invention and the artificial leather prepared using above-mentioned slurry, have to PVC from
The stripping performance that type paper matrix has had substantially increases the service life of PVC release papers, overcome be formerly only available it is dual-purpose with PU/PVC
Paper produces the limitation of SEMIPU.And PVC release papers are cheap, and temperature tolerance paper more dual-purpose than PU is high, greatly reduces cost, with
And the machining kinds of abundant product.
Specific embodiment
For the technology contents that the present invention will be described in detail, the objects and the effects, it is explained below in conjunction with embodiment.
The design of most critical of the present invention is：Know by years of researches and experiment, modified polyurethane resin and hot melt
Property two kinds of materials of polyurethane resin be can and the good material of polyurethane resin compatibility, while can be used again in PVC release papers
Special material.
The present invention provides a kind of polyurethane slurry, and raw material is prepared including following weight parts：Hot melt polyurethane tree
100-110 parts of 30-45 parts of fat, 25-40 parts of modified polyurethane resin, 25-405 parts of polyurethane resin and organic solvent.
A kind of preparation method of artificial leather, the preparation including surface layer, the preparation method of the surface layer are：By above-mentioned modification
Polyurethane slurry is dried coated in PVC release papers under the conditions of 100-140 DEG C, forms surface layer.
A kind of artificial leather is prepared using the preparation method of above-mentioned artificial leather.
As can be seen from the above description, the beneficial effects of the present invention are：
(1) modified polyurethane resin is added in polyurethane slurry of the invention, performance can be shelled on Reinforced PVC paper, had
Have it is anti-sticking help release effect, and there is good adherence between bottom PVC slurries, hot melt polyurethane also functions to enhancing stripping
Effect from performance, and modulus is low, can also improve feel.In order to find optimal energy and the good material of polyurethane resin compatibility
Material, applicant pass through experimental verification and know by years of researches and experiment, modified polyurethane resin and hot melt polyurethane
Two kinds of materials of resin be can and the good material of polyurethane resin compatibility, while the special material that can be used again in PVC release papers
Material.Lines sizing plays regulatory role when polyurethane resin is used for adjusting feel and after-processing technology, can be by adjusting content
Ratio obtains the feel and lines of needs；
(2) polyurethane slurry of the invention and the artificial leather prepared using above-mentioned slurry, have to PVC from
The stripping performance that type paper matrix has had substantially increases the service life of PVC release papers, overcome be formerly only available it is dual-purpose with PU/PVC
Paper produces the limitation of SEMIPU.And PVC release papers are cheap, and temperature tolerance paper more dual-purpose than PU is high, greatly reduces cost, with
And the machining kinds of abundant product.
In the polyurethane slurry of the present invention：
Further, the raw material for preparing further includes 0.1-0.3 parts of auxiliary agent, 12-16 parts of age resister and colorant 0-10
Part.
Seen from the above description, prepare raw material and may also include 0.1-0.3 parts of auxiliary agent, 12-16 parts of age resister and colorant
0-10 parts.Auxiliary agent can be the auxiliary agents such as levelling agent of the prior art, color release agent, and age resister and colorant are in principle
To select existing age resister and colorant.As a specific selection example, levelling agent selects BYK-9565, color release agent
The BYK-104 colors separation preventing agent product of Bi Ke BYK chemical companies of Germany production is selected, age resister selects Fujian Bao Litexin
The SR-02 of Materials Co., Ltd.
Further, the organic solvent presses 3 for dimethylformamide, acetone and butanone:3:3.8-4.2 ratio mixing
Mixed solvent afterwards.
Seen from the above description, organic solvent presses 3 for dimethylformamide, acetone and butanone:3:3.8-4.2 ratio mix
Mixed solvent after conjunction, is more highly preferred to, and organic solvent presses 3 for dimethylformamide, acetone and butanone:3:4 ratio mixing
Mixed solvent afterwards.
Further, the hot melt polyurethane resin is the hot melt polyurethane of model PLT-618X；
The modified polyurethane resin is the modified polyurethane resin of model PLT-103；
The polyurethane resin is the polyurethane resin of model DY-8300.
Seen from the above description, as a specific selection example, hot melt polyurethane resin selects melting temperature to exist
160-170 or so, the relatively good hot melt polyurethane resin of the release stripping result of material, such as Fujian Bao Lite new materials have
Limit company produces PLT-816X；Modified polyurethane resin is selected with excellent light resistance and outdoor ageing resistance, melting temperature
Material low, that there is excellent demoulding peeling effect is spent, can be compounded by acroleic acid resin and aliphatic polyurethane, example
The PLT-103 resins produced such as Fujian Bao Lite new materials Co., Ltd；What the polyurethane resin of model DY-8300 was selected is
The resin of Jinjiang great Yuan polyurethane resins factory production, polyurethane referred herein are that production polyurethane used for artificial leather is by isocyanide
Acid esters (monomer) is polymerized with hydroxy compounds, abbreviation PU.Furthermore, it is desirable to explanation, modified polyurethane of the invention can
How much to adjust stripping difficulty or ease of the modified polyurethane mixed cloth in PVC release papers by dosage.The hot melt of above-mentioned model
Polyurethane resin, modified polyurethane resin and polyurethane resin are used cooperatively, have preferably with PVC release paper fissilities
Energy.
Further, the viscosity of the polyurethane slurry is 900-1500CPS.
Seen from the above description, it is preferred that the viscosity of controllable polyurethane slurry is 900-1500CPS, can make to change
Property polyurethane slurry in later stage preparation process, be more easy to and PVC release papers remove.
In the preparation method of the artificial leather of the present invention：
Further, the polyurethane slurry is 9-13 coated on the coating thickness in PVC release papers.
Seen from the above description, it is preferred that polyurethane slurry is 9-13 coated on the coating thickness in PVC release papers
Silk, further, can also be scratched, foodstuff amount is in 25-60g with dise knife.
Further, the preparation of foaming layer, adhesive layer and base cloth layer, the foaming layer, adhesive layer and base cloth layer are further included
Preparation method be：By foam polyvinyl chloride slurry coated on the surface layer, foaming layer is obtained；Then binding sizing agent is coated
It in polyvinyl chloride foam layer, being bonded artificial leather base fabric on binding sizing agent, is then dried, obtains adhesive layer and base fabric
Layer.
Further, obtain adhesive layer and base cloth layer is cooled down afterwards, then PVC release papers are removed, are obtained
Artificial leather semi-finished product.
The embodiment of the present invention one is：
The preparation method of the artificial leather of the present embodiment, comprises the following steps：
(1) the PVC release papers needed for selecting, in release paper front, application viscosity is 1000CPS/25 DEG C of modified polyurethane
Slurry, the weight of modified polyurethane slurry are specially：
Hot melt polyurethane resin (PLT-618X)：40,
Modified polyurethane resin (PLT-103)：30,
Polyurethane resin (DY-8300)：30,
Dimethylformamide/acetone/butanone (presses 3:3:3.8 ratio mixing)：80,
Levelling agent (BYK-9565)：0.1,
Age resister (SR-02)：15,
Color release agent (BYK-104)：0.3 and
Colorant：0-10.
The coating thickness for mill base material is 9 (can also be scratched with dise knife, foodstuff amount is in 25g).By 100 DEG C of temperature
Dry 1 minute obtained modified polyurethane surface layer.
Modified polyurethane slurry in formula is to adjust stripping difficulty or ease of the surface layer in PVC release papers by dosage size.
As shown in table 1：
Table 1
| Dosage 1 | Dosage 2 | Dosage 3 | Dosage 4 | |
| Hot melt polyurethane (PLT-618X) | 40 | 25 | 15 | 5 |
| Modified polyurethane (PLT-103) | 30 | 20 | 15 | 5 |
| Polyurethane (DY-8300) | 30 | 55 | 70 | 90 |
Release paper (3cm/kg) peel strength is tested using electronics measurer for pulling force, the test result of dosage 1-3
Respectively：Pulling force reading respectively 0.015N, 0.035N and 0.2N when start to remove, the test result of dosage 4 is broken for release paper stripping.
(2) foam polyvinyl chloride paste preparation (in principle, foaming layer of the prior art is also selected in foaming layer, it is preferred that
Select following foaming layers)：
Utilize the plasticizer DOP that 60 parts are sequentially added in dry method PVC batching kettles；Hardness depending on product adjusts deal, then
Addition polymerization vinyl chloride paste resin (the general PVC paste resin for selecting the degree of polymerization 900) simultaneously adds in appropriate 80 parts or so of filler,
Slurry viscosity is adjusted to the thickener of 2000CPS, adds foaming agent (two formyl ammonia of azo) and stabilizer (liquid composite zinc, barium salt
Class) and polyvinyl chloride coloring cream.
The foam polyvinyl chloride thickener prepared is spread evenly across last process transmission by the coating apparatus produced using host
The modified polyurethane fabric come, foam polyvinyl chloride paste amount are 300g/Y, and the thickness and multiplying power with specific reference to sample come
Adjustment.It is just introduced after coating with release paper in host technique in foaming furnace, enters next process after foaming in 170 DEG C.
(3) polyurethane coating medium and base fabric
Using the fitting painting process in host assembly line process, the good PVC foam layer of the postcooling that foams is coated with appetite
For the polyurethane coating medium (i.e. binding sizing agent) of 90G or so, and selected artificial leather base fabric, by attaching process, by release paper and
The material of carrying, which is sent into stove, dries, and temperature is 100 DEG C, and next procedure can be entered by drying 1.5 minutes or so.
(4) clot after the coating medium of drying is removed from release paper；
(5) subsequent processing operations are entered.
The embodiment of the present invention two is：
The preparation method of the artificial leather of the present embodiment, comprises the following steps：
(1) the PVC release papers needed for selecting, in release paper front, application viscosity is 1500CPS/25 DEG C of modified polyurethane
Slurry, the weight of modified polyurethane slurry are specially：
Hot melt polyurethane resin (PLT-618X)：35,
Modified polyurethane resin (PLT-103)：40,
Polyurethane resin (DY-8300)：25,
Dimethylformamide/acetone/butanone (presses 3:3:4.2 ratio mixing)：80,
Levelling agent (BYK-9565)：0.1-0.3,
Age resister (SR-02)：15,
Color release agent (BYK-104)：0.8 and
Colorant：10.
The coating thickness for mill base material is 13 (can also be scratched with dise knife, foodstuff amount is in 60g).By 135 DEG C of temperature
Degree 1.5 minutes obtained modified polyurethane surface layers of drying.
(2) foam polyvinyl chloride paste preparation (in principle, foaming layer of the prior art is also selected in foaming layer, it is preferred that
Select following foaming layers)：
Utilize the plasticizer DOP that 90 parts are sequentially added in dry method PVC batching kettles；Hardness depending on product adjusts deal, then
Addition polymerization vinyl chloride paste resin (the general PVC paste resin for selecting the degree of polymerization 1300) simultaneously adds in appropriate 80 parts or so of filler,
Slurry viscosity is adjusted to the thickener of 3000CPS, adds foaming agent (two formyl ammonia of azo) and stabilizer (liquid composite zinc, barium salt
Class) and polyvinyl chloride coloring cream.
The foam polyvinyl chloride thickener prepared is spread evenly across last process transmission by the coating apparatus produced using host
The modified polyurethane fabric come, foam polyvinyl chloride paste amount are 1000g/Y, and the thickness and multiplying power with specific reference to sample come
Adjustment.It is just introduced after coating with release paper in host technique in foaming furnace, enters next process after foaming in 200 DEG C.
(3) polyurethane coating medium and base fabric
Using the fitting painting process in host assembly line process, the good PVC foam layer of the postcooling that foams is coated with appetite
For the polyurethane coating medium (i.e. binding sizing agent) of 130G or so, and selected artificial leather base fabric, by attaching process, by release paper and
The material of carrying, which is sent into stove, dries, and temperature is 140 DEG C, and next procedure can be entered by drying 1.5 minutes or so.
(4) clot after the coating medium of drying is removed from release paper
(5) subsequent processing operations are entered.
The embodiment of the present invention three is：
The preparation method of the artificial leather of the present embodiment, comprises the following steps：
(1) the PVC release papers needed for selecting, in release paper front, application viscosity is 1200CPS/25 DEG C of modified polyurethane
Slurry, the weight of modified polyurethane slurry are specially：
Hot melt polyurethane resin (PLT-618X)：25,
Modified polyurethane resin (PLT-103)：25,
Polyurethane resin (DY-8300) 50,
Dimethylformamide/acetone/butanone (presses 3:3:4 ratio mixing)：80,
Levelling agent (BYK-9565)：0.2,
Age resister (SR-02)：15,
Color release agent (BYK-104)：0.5 and
Colorant：5.
The coating thickness for mill base material is 10 (can also be scratched with dise knife, foodstuff amount is in 40g).By 125 DEG C of temperature
Degree 1.2 minutes obtained modified polyurethane surface layers of drying.
(2) foam polyvinyl chloride paste preparation (in principle, foaming layer of the prior art is also selected in foaming layer, it is preferred that
Select following foaming layers)：
Utilize the plasticizer DOP that 70 parts are sequentially added in dry method PVC batching kettles；Hardness depending on product adjusts deal, then
Addition polymerization vinyl chloride paste resin (the general PVC paste resin for selecting the degree of polymerization 1100) simultaneously adds in appropriate 80 parts or so of filler,
Slurry viscosity is adjusted to the thickener of 2500CPS, adds foaming agent (two formyl ammonia of azo) and stabilizer (liquid composite zinc, barium salt
Class) and polyvinyl chloride coloring cream.
The foam polyvinyl chloride thickener prepared is spread evenly across last process transmission by the coating apparatus produced using host
The modified polyurethane fabric come, foam polyvinyl chloride paste amount are 700g/Y, and the thickness and multiplying power with specific reference to sample come
Adjustment.It is just introduced after coating with release paper in host technique in foaming furnace, enters next process after foaming in 180 DEG C.
(3) polyurethane coating medium and base fabric
Using the fitting painting process in host assembly line process, the good PVC foam layer of the postcooling that foams is coated with appetite
For the polyurethane coating medium (i.e. binding sizing agent) of 100G or so, and selected artificial leather base fabric, by attaching process, by release paper and
The material of carrying, which is sent into stove, dries, and temperature is 120 DEG C, and next procedure can be entered by drying 1.5 minutes or so.
(4) clot after the coating medium of drying is removed from release paper
(5) subsequent processing operations are entered.
The embodiment of the present invention four is：
The preparation method of the artificial leather of the present embodiment, the only weight of modified polyurethane slurry design not with viscosity
Together, other are identical with embodiment one, and the weight of modified polyurethane slurry is specially：
Hot melt polyurethane resin (PLT-618X)：35,
Modified polyurethane resin (PLT-103)：35,
Polyurethane resin (DY-8300)：30,
Dimethylformamide/acetone/butanone (presses 3:3:3.8 ratio mixing)：100,
Auxiliary agent：0.1 and
Age resister (SR-02)：12.
The viscosity of the polyurethane slurry is 900CPS/25 DEG C.
The embodiment of the present invention five is：
The preparation method of the artificial leather of the present embodiment, the only weight of modified polyurethane slurry design not with viscosity
Together, other are identical with embodiment one, and the weight of modified polyurethane slurry is specially：
Hot melt polyurethane resin (PLT-618X)：40,
Modified polyurethane resin (PLT-103)：35,
Polyurethane resin (DY-8300)：25,
Dimethylformamide/acetone/butanone (presses 3:3:4.2 ratio mixing)：110,
Auxiliary agent：0.3,
Age resister (SR-02)：16 and
Colorant：10.
The viscosity of the polyurethane slurry is 1500CPS/25 DEG C.
The embodiment of the present invention six is：
The preparation method of the artificial leather of the present embodiment, the only weight of modified polyurethane slurry design not with viscosity
Together, other are identical with embodiment one, and the weight of modified polyurethane slurry is specially：
Hot melt polyurethane resin (PLT-618X)：30,
Modified polyurethane resin (PLT-103)：35,
Polyurethane resin (DY-8300)：35,
Dimethylformamide/acetone/butanone (presses 3:3:4 ratio mixing)：105,
Auxiliary agent：0.2,
Age resister (SR-02)：14 and
Colorant：5.
The viscosity of the polyurethane slurry is 1300CPS/25 DEG C.
Performance test
The polyurethane slurry that embodiment one to embodiment six obtains is coated in PVC release papers and face is respectively prepared
Layer, and surface layer obtained is removed from the PVC release papers, using electronics measurer for pulling force to PVC in stripping process
Release paper (3cm/kg) peel strength is tested, and the test result of embodiment one to embodiment six is respectively：Pulling force reading point
Other 0.015N, 0.01N, 0.028N, 0.013N, 0.012N, release paper starts to remove during 0.013N, and release paper remove after it is intact
As before, breakage does not occur.
In conclusion polyurethane slurry provided by the invention and the artificial leather prepared using above-mentioned slurry,
With the stripping performance good to PVC release papers mold, the limitation being formerly only available with the dual-purpose paper production SEMIPU of PU/PVC is overcome.
The foregoing is merely the embodiment of the present invention, are not intended to limit the scope of the invention, every to utilize this hair
The equivalents that bright description is made directly or indirectly are used in relevant technical field, are similarly included in this hair
In bright scope of patent protection.
Claims (10)
1. a kind of polyurethane slurry, which is characterized in that prepare raw material including following weight parts：Hot melt polyurethane resin
100-110 parts of 30-45 parts, 25-40 parts of modified polyurethane resin, 25-40 parts of polyurethane resin and organic solvent.
2. polyurethane slurry according to claim 1, which is characterized in that the raw material for preparing further includes auxiliary agent 0.1-
0-10 parts of 0.3 part, 12-16 parts of age resister and colorant.
3. polyurethane slurry according to claim 1, which is characterized in that the organic solvent is dimethyl formyl
Amine, acetone and butanone press 3:3:The mixed mixed solvent of ratio of 3.8-4.2.
4. polyurethane slurry according to claim 1, which is characterized in that the hot melt polyurethane resin is model
For the hot melt polyurethane of PLT-618X；
The modified polyurethane resin is the modified polyurethane resin of model PLT-103；
The polyurethane resin is the polyurethane resin of model DY-8300.
5. polyurethane slurry according to claim 1, which is characterized in that the viscosity of the polyurethane slurry is
900-1500CPS。
6. a kind of preparation method of artificial leather, the preparation including surface layer, which is characterized in that the preparation method of the surface layer is：It will
Polyurethane slurry described in claim 1-5 any one is dried coated in PVC release papers under the conditions of 100-140 DEG C
It is dry, form surface layer.
7. the preparation method of artificial leather according to claim 6, which is characterized in that the polyurethane slurry is coated on
Coating thickness in PVC release papers is 9-13.
8. the preparation method of artificial leather according to claim 6, which is characterized in that further include foaming layer, adhesive layer and base
The preparation of layer of cloth, the preparation method of the foaming layer, adhesive layer and base cloth layer are：By foam polyvinyl chloride slurry coated on described
On surface layer, foaming layer is obtained；Then binding sizing agent is bonded artificial coated in polyvinyl chloride foam layer on binding sizing agent
Then leather base cloth is dried, obtain adhesive layer and base cloth layer.
9. the preparation method of artificial leather according to claim 8, which is characterized in that obtain the laggard of adhesive layer and base cloth layer
Row cooling, then removes PVC release papers, obtains artificial leather semi-finished product.
10. a kind of artificial leather, which is characterized in that using the preparation method system of the artificial leather described in claim 6-8 any one
It is standby to form.
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1279313A (en) * | 1999-06-29 | 2001-01-10 | 财团法人工业技术研究院 | Process for preparing synthetic polyurethane leather |
| CN101454503A (en) * | 2006-05-30 | 2009-06-10 | 可乐丽股份有限公司 | Base material for artificial leather and grained artificial leather |
| CN101586311A (en) * | 2009-05-07 | 2009-11-25 | 安安(中国)有限公司 | Production process of environmental protection PU composite leather and formula thereof |
| CN104233839A (en) * | 2014-10-14 | 2014-12-24 | 福建宝利特集团有限公司 | Once-formed PU/ PVC synthetic leather and preparation method thereof |
| CN107353862A (en) * | 2017-06-14 | 2017-11-17 | 安徽友捷包装材料有限公司 | A kind of hot melt type polyurethane PUR and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1279313A (en) * | 1999-06-29 | 2001-01-10 | 财团法人工业技术研究院 | Process for preparing synthetic polyurethane leather |
| CN101454503A (en) * | 2006-05-30 | 2009-06-10 | 可乐丽股份有限公司 | Base material for artificial leather and grained artificial leather |
| CN101586311A (en) * | 2009-05-07 | 2009-11-25 | 安安(中国)有限公司 | Production process of environmental protection PU composite leather and formula thereof |
| CN104233839A (en) * | 2014-10-14 | 2014-12-24 | 福建宝利特集团有限公司 | Once-formed PU/ PVC synthetic leather and preparation method thereof |
| CN107353862A (en) * | 2017-06-14 | 2017-11-17 | 安徽友捷包装材料有限公司 | A kind of hot melt type polyurethane PUR and preparation method thereof |
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| CN108103800B (en) | 2019-09-17 |
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