CN107160750A - A kind of aqueous/solvent-free minute surface Synthetic Leather preparation technology - Google Patents
A kind of aqueous/solvent-free minute surface Synthetic Leather preparation technology Download PDFInfo
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- CN107160750A CN107160750A CN201710243235.7A CN201710243235A CN107160750A CN 107160750 A CN107160750 A CN 107160750A CN 201710243235 A CN201710243235 A CN 201710243235A CN 107160750 A CN107160750 A CN 107160750A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
- B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
- B32B5/022—Non-woven fabric
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/12—Layered products comprising a layer of synthetic resin next to a fibrous or filamentary layer
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/40—Layered products comprising a layer of synthetic resin comprising polyurethanes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/06—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the heating method
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
- D06N3/0002—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the substrate
- D06N3/0011—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the substrate using non-woven fabrics
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
- D06N3/0056—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the compounding ingredients of the macro-molecular coating
- D06N3/0059—Organic ingredients with special effects, e.g. oil- or water-repellent, antimicrobial, flame-resistant, magnetic, bactericidal, odour-influencing agents; perfumes
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
- D06N3/0086—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the application technique
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2255/00—Coating on the layer surface
- B32B2255/02—Coating on the layer surface on fibrous or filamentary layer
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2260/00—Layered product comprising an impregnated, embedded, or bonded layer wherein the layer comprises an impregnation, embedding, or binder material
- B32B2260/02—Composition of the impregnated, bonded or embedded layer
- B32B2260/021—Fibrous or filamentary layer
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2260/00—Layered product comprising an impregnated, embedded, or bonded layer wherein the layer comprises an impregnation, embedding, or binder material
- B32B2260/04—Impregnation, embedding, or binder material
- B32B2260/046—Synthetic resin
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/70—Other properties
- B32B2307/724—Permeability to gases, adsorption
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Dispersion Chemistry (AREA)
- Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
- Synthetic Leather, Interior Materials Or Flexible Sheet Materials (AREA)
Abstract
The present invention relates to aqueous/solvent-free minute surface Synthetic Leather preparation technology of one kind, its step is as follows：1) non-woven fabrics base fabric is immersed in aqueous polyurethane solution, maceration extract pickup is the 70 75% of non-woven fabrics base fabric；2) material after dipping is pulled out and leaches unnecessary liquid, then dried；3) the material one side after drying is uniformly coated into one layer of WPU surface layer；4) dry after material on by WPU surface layers bond TPU membrane, and carry out heat it is laminating can high-temperature sterilization, after sterilizing in time cooled down with cold water after be vacuum-packed, vacuum Foie Gras is made.Invention not only address only be also easy to produce hair mist, flexibility it is poor, not color inhibition the problem of, while the gas permeability of product of the present invention, mechanical property and environmental-protecting performance can also be improved.
Description
Technical field
The present invention relates to minute surface Synthetic Leather preparation field, and in particular to a kind of aqueous/solvent-free minute surface polyurethane
Synthetic leather preparation technology.
Background technology
Minute surface Synthetic Leather is lasting as a classic products, be fashion with trend never or lack one
Element is planted, occupies important one seat in all kinds of classical or popular footwear money and case and bag style.And traditional common minute surface
Synthetic Leather processing and fabricating transfer usually on mirror surface release paper is formed, and is reached by the gloss for shifting mirror surface release paper
Mirror effect, its glossiness and bright degree are general, are extremely difficult to the mirror effect of coat of paint class high-penetration high-brightness.
Secondly the minute surface product appearance effect of moisture-curable class is suitable with coat of paint class product, but it is also easy to produce hair mist, song
It is flexible it is poor, not color inhibition the problems such as, it is more difficult to meet the requirement of user, while production operation difficulty is larger, percent defective height.
A kind of existing bloom PET films of the A of patent CN 106049077 shift the preparation method of minute surface Synthetic Leather,
Only address only be also easy to produce hair mist, flexibility it is poor, not color inhibition the problem of see, but its gas permeability, mechanical property and the feature of environmental protection compared with
Difference.
The content of the invention
It is an object of the invention to provide aqueous/solvent-free minute surface Synthetic Leather preparation technology of one kind, health is improved
Property.
To achieve these goals, the technical solution adopted by the present invention is：
A kind of aqueous/solvent-free minute surface Synthetic Leather preparation technology, its step is as follows：
1) non-woven fabrics base fabric is immersed in aqueous polyurethane solution, maceration extract pickup is the 70- of non-woven fabrics base fabric
75%；
2) material after dipping is pulled out and leaches unnecessary liquid, then dried；
3) the material one side after drying is uniformly coated into one layer of WPU surface layer；
4) TPU membrane is bonded by WPU surface layers on the material after drying, and it is laminating to carry out heat.
Further, the material by following parts by weight of step 1 aqueous polyurethane solution is constituted：Aqueous polyurethane 60.0-
86.5 parts, 20.0-35.6 parts of two degree of functionality polyurethane, PVA be 10.2-15.5 parts, 0.1-0.4 parts of levelling agent and defoamer 0.1-
0.4 part, 100-150 parts of water.
Further, material carries out hot water wash after the drying in step 2, is dried after washing, repeats aforesaid operations 2-3
It is secondary, and hot water temperature is 50-55 DEG C, water-washing method is continuous foam washing, and PVA solution is added in water lotion.
Further, wherein, described two degree of functionality polyurethane are two degree of functionality urethane acrylate polymer INV-
UV818。
Further, defoamer is the polysiloxane compound containing hydrophobic particles.
Further, levelling agent is polyether-modified dimethyl silicone polymer.
Further, the mass concentration of PVA solution is 0.5-0.9%.
Further, the mass ratio of PVA solution and water is 1-2:100.
Advantage of the present invention is：Aqueous polyurethane possesses good dispersive property and gluing performance；
Two degree of functionality polyurethane are two degree of functionality urethane acrylate polymer INV-UV818, and its molecular functionality is high,
Ultraviolet light cross-linking quick solidifying, bonding force is strong, and the macro property for showing material is excellent so that the present invention possesses excellent hardness,
High glaze, color inhibition and chemical resistance, because main functional group contains allyl double bonds, radiation-hardenable or chemical crosslinking, product
It is shallow transparent with color, high rigidity damage resistant, bloom is without xanthochromia, and simultaneously for the case hardness and gloss for improving material, bonding is strong
Degree and the color inhibition transparency have remarkable result；
Defoamer is the polysiloxane compound containing hydrophobic particles, with extremely excellent suds and defoaming effect；
Levelling agent is polyether-modified dimethyl silicone polymer, can reduce surface tension so that the present invention possesses fabulous
Wetting and permeability；PVA solution prevents from breaking the material after dipping during drying as emulsifying agent, forming thin film；
To sum up the present invention not only address only be also easy to produce hair mist, flexibility it is poor, not color inhibition the problem of, while can also improve
Gas permeability, mechanical property and the environmental-protecting performance of product of the present invention.
Embodiment
The present invention is described in further details below in conjunction with embodiment.
Embodiment 1
Non-woven fabrics base fabric is immersed in aqueous polyurethane solution first, maceration extract pickup is the 70- of non-woven fabrics base fabric
75%；Secondly the material after dipping is pulled out and leaches unnecessary liquid, then dried；It is again that the material one side after drying is equal
One layer of WPU surface layer of even coating；TPU membrane is bonded by WPU surface layers on material after finally drying, and it is laminating to carry out heat.
The material by following parts by weight of aqueous polyurethane solution is constituted：60.0 parts of aqueous polyurethane, the poly- ammonia of two degrees of functionality
Ester acrylate polymer INV-UV818 is 20.0 parts, PVA is 10.2 parts, 0.1 part of polyether-modified dimethyl silicone polymer and contained
100 parts of 0.1 part of polysiloxane compound, the water of hydrophobic particles.
Wherein, material carries out hot water wash after drying, is dried after washing, repeats aforesaid operations 2-3 times, and hot water temperature
For 50 DEG C, water-washing method is continuous foam washing, and PVA solution is added in water lotion.The mass concentration of PVA solution is 0.5%.PVA
The mass ratio of solution and water is 1:100.
Advantage of the present invention is：Aqueous polyurethane possesses good dispersive property and gluing performance；
Two degree of functionality polyurethane are two degree of functionality urethane acrylate polymer INV-UV818, and its molecular functionality is high,
Ultraviolet light cross-linking quick solidifying, bonding force is strong, and the macro property for showing material is excellent so that the present invention possesses excellent hardness,
High glaze, color inhibition and chemical resistance, because main functional group contains allyl double bonds, radiation-hardenable or chemical crosslinking, product
It is shallow transparent with color, high rigidity damage resistant, bloom is without xanthochromia, and simultaneously for the case hardness and gloss for improving material, bonding is strong
Degree and the color inhibition transparency have remarkable result；
Defoamer is the polysiloxane compound containing hydrophobic particles, with extremely excellent suds and defoaming effect；
Levelling agent is polyether-modified dimethyl silicone polymer, can reduce surface tension so that the present invention possesses fabulous
Wetting and permeability；PVA solution prevents from breaking the material after dipping during drying as emulsifying agent, forming thin film；
To sum up the present invention not only address only be also easy to produce hair mist, flexibility it is poor, not color inhibition the problem of, while can also improve
Gas permeability, mechanical property and the environmental-protecting performance of product of the present invention.
Embodiment 2
Non-woven fabrics base fabric is immersed in aqueous polyurethane solution first, maceration extract pickup is non-woven fabrics base fabric
71%；Secondly the material after dipping is pulled out and leaches unnecessary liquid, then dried；It is again that the material one side after drying is equal
One layer of WPU surface layer of even coating；TPU membrane is bonded by WPU surface layers on material after finally drying, and it is laminating to carry out heat.
The material by following parts by weight of aqueous polyurethane solution is constituted：69.5 parts of aqueous polyurethane, the poly- ammonia of two degrees of functionality
Ester acrylate polymer INV-UV818 is 29.6 parts, PVA is 11.8 parts, 0.1 part of polyether-modified dimethyl silicone polymer and contained
100 parts of 0.2 part of polysiloxane compound, the water of hydrophobic particles.
Wherein, material carries out hot water wash after drying, is dried after washing, repeats aforesaid operations 2-3 times, and hot water temperature
For 51 DEG C, water-washing method is continuous foam washing, and PVA solution is added in water lotion.The mass concentration of PVA solution is 0.6%.PVA
The mass ratio of solution and water is 1:100.
Advantage of the present invention is：Aqueous polyurethane possesses good dispersive property and gluing performance；
Two degree of functionality polyurethane are two degree of functionality urethane acrylate polymer INV-UV818, and its molecular functionality is high,
Ultraviolet light cross-linking quick solidifying, bonding force is strong, and the macro property for showing material is excellent so that the present invention possesses excellent hardness,
High glaze, color inhibition and chemical resistance, because main functional group contains allyl double bonds, radiation-hardenable or chemical crosslinking, product
It is shallow transparent with color, high rigidity damage resistant, bloom is without xanthochromia, and simultaneously for the case hardness and gloss for improving material, bonding is strong
Degree and the color inhibition transparency have remarkable result；
Defoamer is the polysiloxane compound containing hydrophobic particles, with extremely excellent suds and defoaming effect；
Levelling agent is polyether-modified dimethyl silicone polymer, can reduce surface tension so that the present invention possesses fabulous
Wetting and permeability；PVA solution prevents from breaking the material after dipping during drying as emulsifying agent, forming thin film；
To sum up the present invention not only address only be also easy to produce hair mist, flexibility it is poor, not color inhibition the problem of, while can also improve
Gas permeability, mechanical property and the environmental-protecting performance of product of the present invention.
Embodiment 3
Non-woven fabrics base fabric is immersed in aqueous polyurethane solution first, maceration extract pickup is the 70- of non-woven fabrics base fabric
75%；Secondly the material after dipping is pulled out and leaches unnecessary liquid, then dried；It is again that the material one side after drying is equal
One layer of WPU surface layer of even coating；TPU membrane is bonded by WPU surface layers on material after finally drying, and it is laminating to carry out heat.
The material by following parts by weight of aqueous polyurethane solution is constituted：77.7 parts of aqueous polyurethane, the poly- ammonia of two degrees of functionality
Ester acrylate polymer INV-UV818 is 28.9 parts, PVA is 13.3 parts, 0.2 part of polyether-modified dimethyl silicone polymer and contained
130 parts of 0.2 part of polysiloxane compound, the water of hydrophobic particles.
Wherein, material carries out hot water wash after drying, is dried after washing, repeats aforesaid operations 2-3 times, and hot water temperature
For 53 DEG C, water-washing method is continuous foam washing, and PVA solution is added in water lotion.The mass concentration of PVA solution is 0.7%.PVA
The mass ratio of solution and water is 1.2:100.
Advantage of the present invention is：Aqueous polyurethane possesses good dispersive property and gluing performance；
Two degree of functionality polyurethane are two degree of functionality urethane acrylate polymer INV-UV818, and its molecular functionality is high,
Ultraviolet light cross-linking quick solidifying, bonding force is strong, and the macro property for showing material is excellent so that the present invention possesses excellent hardness,
High glaze, color inhibition and chemical resistance, because main functional group contains allyl double bonds, radiation-hardenable or chemical crosslinking, product
It is shallow transparent with color, high rigidity damage resistant, bloom is without xanthochromia, and simultaneously for the case hardness and gloss for improving material, bonding is strong
Degree and the color inhibition transparency have remarkable result；
Defoamer is the polysiloxane compound containing hydrophobic particles, with extremely excellent suds and defoaming effect；
Levelling agent is polyether-modified dimethyl silicone polymer, can reduce surface tension so that the present invention possesses fabulous
Wetting and permeability；PVA solution prevents from breaking the material after dipping during drying as emulsifying agent, forming thin film；
To sum up the present invention not only address only be also easy to produce hair mist, flexibility it is poor, not color inhibition the problem of, while can also improve
Gas permeability, mechanical property and the environmental-protecting performance of product of the present invention.
Embodiment 4
Non-woven fabrics base fabric is immersed in aqueous polyurethane solution first, maceration extract pickup is non-woven fabrics base fabric
74%；Secondly the material after dipping is pulled out and leaches unnecessary liquid, then dried；It is again that the material one side after drying is equal
One layer of WPU surface layer of even coating；TPU membrane is bonded by WPU surface layers on material after finally drying, and it is laminating to carry out heat.
The material by following parts by weight of aqueous polyurethane solution is constituted：80.1 parts of aqueous polyurethane, the poly- ammonia of two degrees of functionality
Ester acrylate polymer INV-UV818 is 32.5 parts, PVA is 13.8 parts, 0.3 part of polyether-modified dimethyl silicone polymer and contained
100-150 parts of 0.3 part of polysiloxane compound, the water of hydrophobic particles.
Wherein, material carries out hot water wash after drying, is dried after washing, repeats aforesaid operations 2-3 times, and hot water temperature
For 504 DEG C, water-washing method is continuous foam washing, and PVA solution is added in water lotion.The mass concentration of PVA solution is 0.8%.PVA
The mass ratio of solution and water is 1-2:100.
Advantage of the present invention is：Aqueous polyurethane possesses good dispersive property and gluing performance；
Two degree of functionality polyurethane are two degree of functionality urethane acrylate polymer INV-UV818, and its molecular functionality is high,
Ultraviolet light cross-linking quick solidifying, bonding force is strong, and the macro property for showing material is excellent so that the present invention possesses excellent hardness,
High glaze, color inhibition and chemical resistance, because main functional group contains allyl double bonds, radiation-hardenable or chemical crosslinking, product
It is shallow transparent with color, high rigidity damage resistant, bloom is without xanthochromia, and simultaneously for the case hardness and gloss for improving material, bonding is strong
Degree and the color inhibition transparency have remarkable result；
Defoamer is the polysiloxane compound containing hydrophobic particles, with extremely excellent suds and defoaming effect；
Levelling agent is polyether-modified dimethyl silicone polymer, can reduce surface tension so that the present invention possesses fabulous
Wetting and permeability；PVA solution prevents from breaking the material after dipping during drying as emulsifying agent, forming thin film；
To sum up the present invention not only address only be also easy to produce hair mist, flexibility it is poor, not color inhibition the problem of, while can also improve
Gas permeability, mechanical property and the environmental-protecting performance of product of the present invention.
Embodiment 5
Non-woven fabrics base fabric is immersed in aqueous polyurethane solution first, maceration extract pickup is non-woven fabrics base fabric
75%；Secondly the material after dipping is pulled out and leaches unnecessary liquid, then dried；It is again that the material one side after drying is equal
One layer of WPU surface layer of even coating；TPU membrane is bonded by WPU surface layers on material after finally drying, and it is laminating to carry out heat.
The material by following parts by weight of aqueous polyurethane solution is constituted：86.5 parts of aqueous polyurethane, the poly- ammonia of two degrees of functionality
Ester acrylate polymer INV-UV818 is 35.6 parts, PVA is 15.5 parts, 0.4 part of polyether-modified dimethyl silicone polymer and contained
150 parts of 0.4 part of polysiloxane compound, the water of hydrophobic particles.
Wherein, material carries out hot water wash after drying, is dried after washing, repeats aforesaid operations 2-3 times, and hot water temperature
For 55 DEG C, water-washing method is continuous foam washing, and PVA solution is added in water lotion.The mass concentration of PVA solution is 0.9%.PVA
The mass ratio of solution and water is 2:100.
Advantage of the present invention is：Aqueous polyurethane possesses good dispersive property and gluing performance；
Two degree of functionality polyurethane are two degree of functionality urethane acrylate polymer INV-UV818, and its molecular functionality is high,
Ultraviolet light cross-linking quick solidifying, bonding force is strong, and the macro property for showing material is excellent so that the present invention possesses excellent hardness,
High glaze, color inhibition and chemical resistance, because main functional group contains allyl double bonds, radiation-hardenable or chemical crosslinking, product
It is shallow transparent with color, high rigidity damage resistant, bloom is without xanthochromia, and simultaneously for the case hardness and gloss for improving material, bonding is strong
Degree and the color inhibition transparency have remarkable result；
Defoamer is the polysiloxane compound containing hydrophobic particles, with extremely excellent suds and defoaming effect；
Levelling agent is polyether-modified dimethyl silicone polymer, can reduce surface tension so that the present invention possesses fabulous
Wetting and permeability；PVA solution prevents from breaking the material after dipping during drying as emulsifying agent, forming thin film；
To sum up the present invention not only address only be also easy to produce hair mist, flexibility it is poor, not color inhibition the problem of, while can also improve
Gas permeability, mechanical property and the environmental-protecting performance of product of the present invention.
Claims (8)
1. a kind of aqueous/solvent-free minute surface Synthetic Leather preparation technology, it is characterised in that its step is as follows：
1) non-woven fabrics base fabric is immersed in aqueous polyurethane solution, maceration extract pickup is the 70-75% of non-woven fabrics base fabric；
2) material after dipping is pulled out and leaches unnecessary liquid, then dried；
3) the material one side after drying is uniformly coated into one layer of WPU surface layer；
4) TPU membrane is bonded by WPU surface layers on the material after drying, and it is laminating to carry out heat.
2. aqueous/solvent-free minute surface Synthetic Leather preparation technology of one kind according to claim 1, it is characterised in that：
The material by following parts by weight of step 1 aqueous polyurethane solution is constituted：60.0-86.5 parts of aqueous polyurethane, two degrees of functionality are gathered
20.0-35.6 parts of urethane, PVA are 10.2-15.5 parts, 0.1-0.4 parts of levelling agent and 0.1-0.4 parts of defoamer, water 100-150
Part.
3. aqueous/solvent-free minute surface Synthetic Leather preparation technology of one kind according to claim 1, it is characterised in that：
Material carries out hot water wash after drying in step 2, is dried after washing, repeats aforesaid operations 2-3 times, and hot water temperature is
50-55 DEG C, water-washing method is continuous foam washing, and PVA solution is added in water lotion.
4. aqueous/solvent-free minute surface Synthetic Leather preparation technology of one kind according to claim 2, it is characterised in that：
Wherein, two described degree of functionality polyurethane are two degree of functionality urethane acrylate polymer INV-UV818.
5. aqueous/solvent-free minute surface Synthetic Leather preparation technology of one kind according to claim 2, it is characterised in that：
Defoamer is the polysiloxane compound containing hydrophobic particles.
6. aqueous/solvent-free minute surface Synthetic Leather preparation technology of one kind according to claim 2, it is characterised in that：
Levelling agent is polyether-modified dimethyl silicone polymer.
7. aqueous/solvent-free minute surface Synthetic Leather preparation technology of one kind according to claim 3, it is characterised in that：
The mass concentration of PVA solution is 0.5-0.9%.
8. aqueous/solvent-free minute surface Synthetic Leather preparation technology of one kind according to claim 3, it is characterised in that：
The mass ratio of PVA solution and water is 1-2:100.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710243235.7A CN107160750A (en) | 2017-04-14 | 2017-04-14 | A kind of aqueous/solvent-free minute surface Synthetic Leather preparation technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN109056363A (en) * | 2018-09-30 | 2018-12-21 | 淮安凯悦科技开发有限公司 | A kind of preparation method of aqueous/solvent-free mirror surface PU synthetic leather |
| CN109457491A (en) * | 2018-10-22 | 2019-03-12 | 福建东诚超纤有限公司 | A kind of Waterborne synthetic leather of DE Specular Lighting and preparation method thereof |
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| CN112342797B (en) * | 2020-11-27 | 2022-11-08 | 苏州瑞高新材料有限公司 | Waterborne polyurethane/TPU synthetic leather |
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Application publication date: 20170915 |