CN102383316B - Micro-fiber environment-friendly water-base synthetic leather and preparation method thereof - Google Patents
Micro-fiber environment-friendly water-base synthetic leather and preparation method thereof Download PDFInfo
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- CN102383316B CN102383316B CN 201110232140 CN201110232140A CN102383316B CN 102383316 B CN102383316 B CN 102383316B CN 201110232140 CN201110232140 CN 201110232140 CN 201110232140 A CN201110232140 A CN 201110232140A CN 102383316 B CN102383316 B CN 102383316B
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Abstract
The invention discloses micro-fiber environment-friendly water-base synthetic leather and a preparation method thereof. The synthetic leather comprises a micro-fiber non-woven fabric, a bottom layer and a surface layer, wherein the bottom layer is coated on the micro-fiber non-woven fabric; the surface layer is coated on the bottom layer; the surface layer comprises at least four layers of coatings; the coatings are coated with sizing agents; and the sizing agents contain waterborne polyurethane, water and waterborne auxiliaries. Instead of solvent-base polyurethane resins, the waterborne polyurethane resins are adopted in the synthetic leather, so that the prepared synthetic leather is environment-friendly and is harmless to human body. Besides, the synthetic leather is excellent in moisture penetrability and air penetrability and feels like real leather, but is better than natural real leather in the aspects of tearing strength, durability, low-temperature resistance, flexibility, mildew resistance and the like. The grade of a product is greatly promoted.
Description
Technical field
The present invention relates to the synthetic leather field, especially relate to environment-friendly water-based synthetic leather of a kind of super fibre and preparation method thereof.
Background technology
Along with the development of society, human living standard's raising, more and more higher for the requirement of the consumer goods, natural leather is a kind of focus consumption product wherein just.The consciousness reinforcement to watching for animals due to the restriction that is subject to natural conditions and countries in the world, natural leather reduces year by year, and in order to substitute this natural leather, synthetic leather is invented.
Present domestic synthetic leather aggregate demand reaches 800,000,000 m
2In/every year, the demand of high-performance, high-environmental, high-quality synthetic leather is reached 200,000,000 m
2/ every year, and have the trend that continues rising.Along with the development of synthetic leather, the consumer is also more and more higher to the requirement of synthetic leather quality.
Yet, the most solvent borne polyurethanes that adopt of existing synthetic leather are made, this solvent borne polyurethane synthetic leather contains a large amount of organic solvents, to human body in process of production or the harm of environment is all sizable, so banned gradually at some developed country's solvent-borne type synthetic leather.
In order to satisfy consumer's requirement, the inexorable trend that to develop a kind of environmental protection and high-quality synthetic leather product be market development.
Summary of the invention
The object of the invention is, provides a kind of environmental protection and quality higher super fine environmental protection flame retardant synthetic leather.
For this reason, provide in the present invention a kind of super fibre environment-friendly water-based synthetic leather, comprise super fine nonwoven fabric, cover the bottom on nonwoven fabric, and cover surface layer on bottom, wherein, surface layer comprises that at least 4 layers are coated with by slurry and scrape the coating that forms, and each slurry comprises: aqueous polyurethane, water and aqueous promoter.
Further, the environment-friendly water-based synthetic leather surface layer of above-mentioned super fibre comprises 4 layers of coating, be respectively: tack coat, cover bottom above, the slurry of tack coat comprises following raw material by weight: first waterborne polyurethane resin 80-100 part, water 10-20 part, aqueous promoter 0-5 part; The first intermediate layer, cover tack coat above, the slurry in the first intermediate layer comprises following raw material by weight: second waterborne polyurethane resin 80-100 part, water 20-30 part, aqueous promoter 0-5 part; The second intermediate layer, cover the first intermediate layer above, the slurry in the second intermediate layer comprises following raw material by weight: the 3rd waterborne polyurethane resin 80-100 part, water 20-30 part, aqueous promoter 0-5 part; Superficial layer, cover the second intermediate layer above, the slurry of superficial layer comprises following raw material by weight; The 4th waterborne polyurethane resin 80-100 part, water 30-40 part, aqueous promoter 0-5 part,
Wherein, the first polyurethane resin is that modulus is 25-35kg/cm
2, molecular weight is 0.5 * 10
5-0.6 * 10
5Polyurethane resin; The second polyurethane resin is that modulus is 55-65kg/cm
2, molecular weight is 0.6 * 10
5-0.7 * 10
5Polyurethane resin; The 3rd polyurethane resin is that modulus is 55-65kg/cm
2, molecular weight is 0.6 * 10
5-0.7 * 10
5Polyurethane resin; The 4th polyurethane resin is that modulus is 65-75kg/cm
2, molecular weight 0.7 * 10
5-0.8 * 10
5Polyurethane resin.
Further, in the environment-friendly water-based synthetic leather of above-mentioned super fibre, the viscosity of tack coat slurry is 5000-5500CPS; The viscosity of the first intermediate layer slurry is 3000-3500CPS; The viscosity of the second intermediate layer slurry is 2000-2500CPS; The viscosity of superficial layer slurry is 1000-1500CPS.
Further, in the environment-friendly water-based synthetic leather of above-mentioned super fibre, aqueous promoter is one or more in water-based thickener, water-based levelling agent, water-based defoamer.
Further, the base pastes in the environment-friendly water-based synthetic leather of above-mentioned super fibre in bottom comprises by weight: the 5th waterborne polyurethane resin 80-100 part, water 70-80 part, aqueous promoter 0-5 part, described the 5th polyurethane resin are that modulus is 25-35kg/cm
2, molecular weight is 0.5 * 10
5-0.6 * 10
5The polyurethane resin of Mr.
Simultaneously, also provide in the present invention a kind of preparation method of the above-mentioned environment-friendly water-based synthetic leather of super fibre, it is characterized in that, comprised the following steps: the production of nonwoven fabric; The wet method base contains nonwoven fabric in the base pastes that is immersed in bottom, preparation end base; The dry method veneer is coated with successively on carrier side and scrapes the superficial layer slurry and form superficial layer, be coated with and scrape the second intermediate layer slurry and form the second intermediate layer, be coated with and scrape the first intermediate layer slurry and form the first intermediate layer and be coated with and scrape the tack coat slurry and form tack coat, generates surface layer; Tack coat one side in surface layer and end base applying, oven dry, cooling, glass are generated super fine environmental protection flame retardant synthetic leather.
Further, in above-mentioned preparation method, the dry method veneer is further comprising the steps: the preparation of superficial layer comprises the following steps: after the 4th waterborne polyurethane resin high-speed stirred 30-60min, be under 50-70 ℃ in temperature, add aqueous promoter, then after stirring 15-20min, add water and be modulated into the superficial layer slurry that viscosity is 1000-1500CPS, superficial layer slurry gapless is coated with scrapes on carrier side, form the coating of 1-2 silk, oven dry forms superficial layer; The preparation in the second intermediate layer, comprise the following steps: after the 3rd waterborne polyurethane resin high-speed stirred 30-60min, be under 50-70 ℃ in temperature, add aqueous promoter, after stirring 15-20min again, add entry and be modulated into the second intermediate layer slurry that viscosity is 2000-2500CPS, the second intermediate layer slurry is coated with scrapes on superficial layer, form the coating of 8-12 silk, oven dry forms the second intermediate layer; The preparation in the first intermediate layer, comprise the following steps: after the second waterborne polyurethane resin high-speed stirred 30-60min, be under 50-70 ℃ in temperature, add aqueous promoter, after stirring 15-20min again, add entry and be modulated into the first intermediate layer slurry that viscosity is 3000-3500CPS, the first intermediate layer slurry is coated with scrapes on the second intermediate layer, form the coating of 8-12 silk, oven dry forms the first intermediate layer; The preparation of tack coat, comprise the following steps: after the first waterborne polyurethane resin high-speed stirred 30-60min, be under 50-70 ℃ in temperature, add aqueous promoter, after stirring 15-20min again, add entry and be modulated into the slurry that viscosity is 5000-5500CPS, the tack coat slurry is coated with scrapes on the intermediate layer, form the tack coat of 2-12 silk;
Further, in above-mentioned preparation method, the dry method veneer is further comprising the steps: in the preparation process of superficial layer, the step of oven dry further comprises: will be coated with the carrier side of scraping the superficial layer slurry and move with the speed of 8-9m/min, respectively through the oven dry that progressively heats up of 65-75 ℃, 75-85 ℃ temperature section, the length of each temperature section is 3m, and rotation speed of fan is 300 rev/mins; In the preparation process in the second intermediate layer, the step of oven dry further comprises: will be coated with the carrier side of scraping the second intermediate layer slurry and move with the speed of 8-9m/min, respectively through the oven dry that progressively heats up of 65-75 ℃, 70-80 ℃, 75-85 ℃, 80-90 ℃ temperature section, the length of each temperature section is 4m, and rotation speed of fan is 400 rev/mins; In the preparation process in the first intermediate layer, the step of oven dry further comprises: will be coated with the carrier side of scraping by the first intermediate layer slurry and move with the speed of 8-9m/min, respectively through the oven dry that progressively heats up of 70-80 ℃, 75-85 ℃, 80-90 ℃, 85-95 ℃ temperature section, the length of each temperature section is 4m, and rotation speed of fan is 500 rev/mins;
Further, in above-mentioned preparation method, the preparation of end base is further comprising the steps: after the 5th waterborne polyurethane resin high-speed stirred 30-60min, be under 50-70 ℃ in temperature, add aqueous promoter, after stirring 15-20min again, add entry and be modulated into the base pastes that viscosity is 150-170CPS, will super fine nonwoven fabric contain and be immersed in base pastes, solidify rear extraction, washing, oven dry, softness, dyeing, mill skin until slurry and make end base.
Further, step with tack coat one side in surface layer and the applying of end base in above-mentioned preparation method further comprises: the mode that adopts wet method to fit, with end base after 100-110 ℃ of lower high temperature preheating, tack coat and end base are fitted, laminate pressure is 0.5-0.8MPa, dry under 100-105 ℃ after fitting, in drying course, the applying thing moves 20 meters with the speed of 6m/min; After oven dry, cooling peeling off forms super fine environmental protection flame retardant synthetic leather.
Beneficial effect of the present invention:
The environment-friendly water-based synthetic leather of super fibre provided by the present invention, by adopting waterborne polyurethane resin, avoided the employing solvent type polyurethane resin, make prepared synthetic leather environmental protection, do not harm human body, and saturating wet, good permeability, feel is near leather effect, tear, on the performance such as wear-resisting, lower temperature resistance, anti-tortuosity, anti-mildew change considerably beyond natural leather, greatly improved the class of product
The preparation method of the environment-friendly water-based synthetic leather of super fibre provided by the present invention, simple and practical, by changing the parameter in production process, just can produce environmental protection, high-quality synthetic leather on the basis of old synthetic leather production equipment adopting, and production process environmental protection, pollution-free is without extra equipment cost.
Except purpose described above, feature and advantage, the present invention also has other purpose, feature and advantage.The below is with reference to the specific embodiment, and the present invention is further detailed explanation.
The specific embodiment
Below embodiments of the invention are elaborated, but following embodiment understands the present invention, and can not limit the present invention, the multitude of different ways that the present invention can be defined by the claims and cover is implemented.
The polyurethane resin that uses in the present invention all belongs to waterborne polyurethane resin, and its solid content selects the commercially available prod to get final product according to suitable modulus and molecular weight between 30%-50%.
In a kind of exemplary embodiment of the present invention, the environment-friendly water-based synthetic leather of a kind of super fibre, comprise super fine nonwoven fabric, cover the bottom on nonwoven fabric, and cover surface layer on bottom, wherein, surface layer comprises that at least 4 layers are coated with by slurry and scrape the coating that forms, and each slurry comprises: aqueous polyurethane, water and aqueous promoter.The aqueous polyurethane that uses in the present invention is toluene di-isocyanate(TDI) polyurethane, and it can be bought by the excellent Nike aqueous polyurethane of Lishui of Zhejiang company.
In the above-described embodiment, replace solvent borne polyurethane to make prepared synthetic leather environmental protection, pollution-free by adopting aqueous polyurethane, use comfortable.Simultaneously, by adopting, the mode of at least 4 layers is set in surface layer, has strengthened the intensity of synthetic leather, make its wet, good permeability thoroughly, good hand touch, and tear, wear-resisting, lower temperature resistance, anti-tortuosity, etc. aspect of performance also increase.
Preferably, in the environment-friendly water-based synthetic leather of above-mentioned super fibre, surface layer comprises 4 layers of coating, is respectively: tack coat, the first intermediate layer, the second intermediate layer and superficial layer.Tack coat cover bottom above, the slurry of tack coat comprises following raw material by weight: first waterborne polyurethane resin 80-100 part, water 10-20 part, aqueous promoter 0-5 part; The first intermediate layer cover tack coat above, the slurry in the first intermediate layer comprises following raw material by weight: second waterborne polyurethane resin 80-100 part, water 20-30 part, aqueous promoter 0-5 part; The second intermediate layer cover the first intermediate layer above, the slurry in the second intermediate layer comprises following raw material by weight: the 3rd waterborne polyurethane resin 80-100 part, water 20-30 part, aqueous promoter 0-5 part; Superficial layer cover the second intermediate layer above, the slurry of superficial layer comprises following raw material by weight; The 4th waterborne polyurethane resin 80-100 part, water 30-40 part, aqueous promoter 0-5 part.
The surface layer of the environment-friendly water-based synthetic leather of above-mentioned super fibre can also be 5 layers, 6 layers, 7 layers etc. in the present invention, when it is 5 layers, 6 layers, 7 layers etc., be equivalent in the centre in the first intermediate layer and the second intermediate layer, the 3rd, the 4th, the 5th intermediate layer is set, three, the raw material in the 4th, the 5th intermediate layer is identical with the raw material in first, second intermediate layer, is only that its viscosity is reduced to the second intermediate layer direction gradually by the first intermediate layer.
Preferably, in the environment-friendly water-based synthetic leather of above-mentioned super fibre, the viscosity of tack coat slurry is 5000-5500CPS; The viscosity of the first intermediate layer slurry is 3000-3500CPS; The viscosity of the second intermediate layer slurry is 2000-2500CPS; The viscosity of superficial layer slurry is 1000-1500CPS.
In above-mentioned synthetic leather in each coating of surface layer, the range of viscosities of the slurry of coating is not limited to above-mentioned scope, just in above-mentioned scope, make prepared each coating not can because of viscosity too high be unfavorable for being coated with scrape, can not hang down very much to produce in drying course because of viscosity yet and too much steam the hole, and reduce the surface strength of synthetic leather.And then can prepare all comparatively outstanding synthetic leather of various aspects of performance.
Preferably, above-mentioned aqueous promoter is one or more in water-based thickener, water-based levelling agent, water-based defoamer.The selection of this water-based thickener, water-based levelling agent and/or water-based defoamer raw material and consumption is that those skilled in the art can access through rational analysis, does not describe in detail at this.
In above-mentioned slurry, can increase suitable environmental protection color chips according to the color of the synthetic leather of institute wish preparation, adding of environmental protection color chips belongs to conventional means, and those skilled in the art have the ability to select suitable raw material and use amount through reasonable analysis.
In a kind of typical embodiment of the present invention, the base pastes in the environment-friendly water-based synthetic leather of above-mentioned super fibre in bottom comprises by weight: the 5th waterborne polyurethane resin 80-100 part, water 70-80 part, aqueous promoter 0-5 part.The 5th polyurethane resin is that modulus is 25-35kg/cm
2, molecular weight is 0.5 * 10
5-0.6 * 10
5Polyurethane resin.Wherein the kind of aqueous promoter and consumption are with reference to the consumption of slurry in above-mentioned surface layer.
In a kind of typical embodiment of the present invention, in above-mentioned super fine environmental protection flame retardant synthetic leather, nonwoven fabric can be a kind of in terylene, poly-ethamine, nylon, buys the commercially available prod and gets final product.
Simultaneously, in a kind of typical embodiment of the present invention, the preparation method of the environment-friendly water-based synthetic leather of a kind of above-mentioned super fibre comprises the following steps: the production of nonwoven fabric; The wet method base contains nonwoven fabric in the base pastes that is immersed in bottom, preparation end base; The dry method veneer is coated with successively on carrier side and scrapes the superficial layer slurry and form superficial layer, be coated with and scrape the second intermediate layer slurry and form the second intermediate layer, be coated with and scrape the first intermediate layer slurry and form the first intermediate layer and be coated with and scrape the tack coat slurry and form tack coat, generates surface layer; Tack coat one side in surface layer and end base applying, oven dry, cooling, glass are generated super fine environmental protection flame retardant synthetic leather.This preparation method, simple easily realization, thing organic solvent volatilization in production process, environmental protection, avirulence more are conducive to the healthy of operating personnel.
Obtained carrier side refers to the common paper with certain texture in the above-described embodiment, and this carrier side has the face of providing support and makes the synthetic leather surface have the effect of beautiful texture.
Preferably, in above-mentioned preparation method, the dry method veneer is further comprising the steps: the preparation of superficial layer, comprise the following steps: after the 4th waterborne polyurethane resin high-speed stirred 30-60min, be under 50-70 ℃ in temperature, add aqueous promoter, after stirring 15-20min again, add water and be modulated into the superficial layer slurry that viscosity is 1000-1500CPS, superficial layer slurry gapless is coated with scrapes on carrier side, form the coating of 1-2 silk, oven dry forms superficial layer; The preparation in the second intermediate layer, comprise the following steps: after the 3rd waterborne polyurethane resin high-speed stirred 30-60min, be under 50-70 ℃ in temperature, add aqueous promoter, after stirring 15-20min again, add entry and be modulated into the second intermediate layer slurry that viscosity is 2000-2500CPS, the second intermediate layer slurry is coated with scrapes on superficial layer, form the coating of 8-12 silk, oven dry forms the second intermediate layer; The preparation in the first intermediate layer, comprise the following steps: after the second waterborne polyurethane resin high-speed stirred 30-60min, be under 50-70 ℃ in temperature, add aqueous promoter, after stirring 15-20min again, add entry and be modulated into the first intermediate layer slurry that viscosity is 3000-3500CPS, the first intermediate layer slurry is coated with scrapes on the second intermediate layer, form the coating of 8-12 silk, oven dry forms the first intermediate layer; The preparation of tack coat, comprise the following steps: after the first waterborne polyurethane resin high-speed stirred 30-60min, be under 50-70 ℃ in temperature, add aqueous promoter, after stirring 15-20min again, add entry and be modulated into the slurry that viscosity is 5000-5500CPS, the tack coat slurry is coated with scrapes on the intermediate layer, form the tack coat of 8-12 silk.
In the present invention, if the aqueous promoter that adds comprises water-based levelling agent, water-based thickener and water-based defoamer, first add simultaneously water-based levelling agent and water-based thickener, stir after 15-20 minute, add the water-based defoamer, high-speed stirred 2-3 minute, static 10-15 minute, so that the bubble in the minimizing slurry, strengthen the intensity of prepared coating.
In the present invention, can also filter after above-mentioned each layer slurry made, can filter 2-3 just by adopting 200 purpose screen packs, so that in slurry, particle is evenly fine and smooth, strengthen the feel of prepared synthetic leather.
Adopt this preparation method, it is even that various slurries mix, and the strength of coating of generation is good, is conducive to prepare high-quality synthetic leather.
Preferably, above-mentioned dry method veneer is further comprising the steps: in the preparation process of superficial layer, the step of oven dry further comprises: will be coated with the carrier side of scraping the superficial layer slurry and move with the speed of 8-9m/min, pass through respectively 65-75 ℃, 75-85 ℃ temperature section, be preferably the oven dry that progressively heats up of 70 ℃, 80 ℃ temperature sections, the length of each temperature section is 3m, and rotation speed of fan is 300 rev/mins; In the preparation process in the second intermediate layer, the step of oven dry further comprises: will be coated with the carrier side of scraping the second intermediate layer slurry and move with the speed of 8-9m/min, pass through respectively 65-75 ℃, 70-80 ℃, 75-85 ℃, 80-90 ℃ temperature section, be preferably the oven dry that progressively heats up of 70 ℃, 75 ℃, 80 ℃, 85 ℃ temperature sections, the length of each temperature section is 4m, and rotation speed of fan is 400 rev/mins; In the preparation process in the first intermediate layer, the step of oven dry further comprises: will be coated with the carrier side of scraping by the first intermediate layer slurry and move with the speed of 8-9m/min, pass through respectively 70-80 ℃, 75-85 ℃, 80-90 ℃, 85-95 ℃, be preferably the oven dry that progressively heats up of 75 ℃, 80 ℃, 85 ℃, 90 ℃ temperature section sections, the length of each temperature section is 4m, and rotation speed of fan is 500 rev/mins;
The mode of this oven dry that progressively heats up is conducive to make the waterborne polyurethane resin film forming gradually that is not easy film forming, and every one deck coating all obtains good film forming characteristics, more is conducive to prepare high-quality synthetic leather.And these temperature requirements are all the scopes that existing synthetic leather production equipment can reach, and can adopt directly this Waterborne synthetic leather of production of existing synthetic leather production equipment, have reduced equipment cost.
Preferably, in above-mentioned preparation method, the preparation of end base is further comprising the steps: after the 5th waterborne polyurethane resin, high-speed stirred 30-60min, be under 50-70 ℃ in temperature, add aqueous promoter, then after stirring 15-20min, add entry and be modulated into the base pastes that viscosity is 150-170CPS, will super fine nonwoven fabric contain and be immersed in base pastes, solidify rear extraction, washing, oven dry, softness, dyeing, mill skin until slurry and make end base.
Preferably, the step of tack coat one side in surface layer and the applying of end base is further comprised: the mode that adopts wet method to fit, with end base after 100-110 ℃ of lower high temperature preheating, tack coat and end base are fitted, laminate pressure is 0.5-0.8MPa, dry under 100-105 ℃ after fitting, in drying course, the applying thing moves 20 meters with the speed of 6m/min; After oven dry, cooling peeling off forms super fine environmental protection flame retardant synthetic leather.
Adopt the synthetic leather applying of this method preparation closely seamless, be more conducive to long-term use.
In a kind of concrete embodiment of the present invention, in the preparation process of above-mentioned super fine environmental protection flame retardant synthetic leather, the production of nonwoven fabric comprises acupuncture, impregnation and 3 parts of finalizing the design, and the concrete operation of acupuncture is divided into again the part of feeding-shredding-mixing-combing-lapping-acupuncture.This operation all belongs to conventional operation, is not again describing in detail.
Further illustrate the beneficial effect of the super fine environmental protection flame retardant synthetic leather of the present invention below with reference to embodiment 1-3 and Comparative Examples 1.
For the outward appearance of Waterborne synthetic leather provided by the present invention is described better; be to adopt the auxiliary agent of same amount in example 1 at embodiment of the present invention 1-3 and contrast; the consumption of the auxiliary agent that certainly uses in embodiment can not limit protection scope of the present invention; to those skilled in the art; can according to its common practise and conventional means, can analyze raw material and the consumption of the aqueous promoter that uses.
The water-based levelling agent that uses in the present invention is the Lishui of Zhejiang city excellent Nike aqueous polyurethane F3 of company product, at the water-based thickener Lishui of Zhejiang used in the present invention city excellent Nike aqueous polyurethane F5 of company product, the water-based defoamer that uses in the present invention is the F6 product of Lishui of Zhejiang city excellent Nike aqueous polyurethane company.
Embodiment 1
Raw material:
Nonwoven fabric: one synthetic leather company of Zhejiang section produces.
Base pastes: modulus is 25kg/cm
2, molecular weight is 0.5 * 10
5The 5th waterborne polyurethane resin 80g, water 70g.
The superficial layer slurry: modulus is 65kg/cm
2, molecular weight 0.7 * 10
5The 4th waterborne polyurethane resin 80g, water 40g;
The second intermediate layer slurry: modulus is 55kg/cm
2, molecular weight is 0.6 * 10
5The 3rd waterborne polyurethane resin 80g, water 30g;
The first intermediate layer slurry: modulus is 55kg/cm
2, molecular weight is 0.6 * 10
5The second waterborne polyurethane resin 80g, water 30g;
The tack coat slurry; Modulus is 25kg/cm
2, molecular weight is 0.5 * 10
5The first waterborne polyurethane resin 80g, water 20g.
The preparation method:
The production of nonwoven fabric;
The wet method base, with the 5th waterborne polyurethane resin high-speed stirred 30 minutes, add entry and be modulated into the base pastes that viscosity is 150CPS, will super fine nonwoven fabric contain and be immersed in described base pastes, solidify rear extraction, washing, oven dry, softness, dyeing, mill skin until slurry and make base of the described end.
The dry method veneer,
Preparation table surface layer: with the 4th waterborne polyurethane resin high-speed stirred after 30 minutes, be under 50 ℃ in temperature, add water and be modulated into the superficial layer slurry that viscosity is 1500CPS, superficial layer slurry gapless is coated with scrapes on carrier side, form the coating of 2, will be coated with the carrier side of scraping the superficial layer slurry speed operation with 8m/min, respectively through the oven dry that progressively heats up of 75 ℃, 85 ℃ temperature sections, the length of each temperature section is 3m, and rotation speed of fan is 300 rev/mins; Form superficial layer;
In preparation the second intermediate layer on superficial layer: with the 3rd waterborne polyurethane resin high-speed stirred after 30 minutes, be under 50 ℃ in temperature, add entry and be modulated into the second intermediate layer slurry that viscosity is 2500CPS, the second intermediate layer slurry is coated with scrapes on superficial layer, form the coating of 12, move with the speed of 8m/min being coated with the carrier side of scraping the second intermediate layer slurry, respectively through the oven dry that progressively heats up of 65 ℃, 70 ℃, 75 ℃, 80 ℃ temperature sections, the length of each temperature section is 4m, and rotation speed of fan is 400 rev/mins; Oven dry forms the second intermediate layer;
In preparation the first intermediate layer on the second intermediate layer: with the second waterborne polyurethane resin high-speed stirred after 30 minutes, be to add entry under 50 ℃ to be modulated into the first intermediate layer slurry that viscosity is 3500CPS in temperature, the first intermediate layer slurry is coated with scrapes on the second intermediate layer, form the coating of 12, move with the speed of 8m/min being coated with the carrier side of scraping by the first intermediate layer slurry, respectively through the oven dry that progressively heats up of 70 ℃, 75 ℃, 80 ℃, 85 ℃ temperature sections, the length of each temperature section is 4m, and rotation speed of fan is 500 rev/mins; Oven dry forms the first intermediate layer;
Preparing tack coat on the first intermediate layer: after 30 minutes, be 50 ℃ under in temperature with the first waterborne polyurethane resin high-speed stirred, add entry and be modulated into the slurry that viscosity is 5500CPS, the tack coat slurry is coated with scrapes on the intermediate layer, form the tack coat of 12;
The mode that the employing wet method is fitted after 100 ℃ of lower high temperature preheatings, is fitted base of the described end with tack coat and base of the described end, laminate pressure is 0.5MPa, dries under 100 ℃ after fitting, and in drying course, the applying thing moves 20 meters with the speed of 6m/min; After oven dry, cooling peeling off forms super fine environmental protection flame retardant synthetic leather.
Embodiment 2
Nonwoven fabric: one synthetic leather company of Zhejiang section produces.
Base pastes: modulus is 35kg/cm
2, molecular weight is 0.6 * 10
5The 5th waterborne polyurethane resin 100g, water 80g, water-based levelling agent 2g, water-based defoamer 2g.
The superficial layer slurry: modulus is 75kg/cm
2, molecular weight 0.8 * 10
5The 4th waterborne polyurethane resin 100g, water 30g, water-based levelling agent 2g, water-based thickener 1g, water-based defoamer 1g;
The second intermediate layer slurry: modulus is 65kg/cm
2, molecular weight 0.7 * 10
5The 3rd waterborne polyurethane resin 100g, water 20g, water-based levelling agent 1g, water-based thickener 1.5g, water-based defoamer 1.5g;
The first intermediate layer slurry: modulus is 65kg/cm
2, molecular weight 0.7 * 10
5The second waterborne polyurethane resin 100g, water 20g, water-based levelling agent 1g, water-based thickener 1.5g, water-based defoamer 1.5g;
The tack coat slurry; Modulus is 35kg/cm
2, molecular weight 0.6 * 10
5The first waterborne polyurethane resin 100g, water 10g, water-based levelling agent 1g, water-based thickener 2g, water-based defoamer 1.5g.
The preparation method:
The production of nonwoven fabric;
The wet method base, with the 5th waterborne polyurethane resin high-speed stirred after 30 minutes, for being under 50 ℃ in temperature, add the water-based levelling agent in temperature, stir after 15 minutes, add the water-based defoamer, stirred 2 minutes, and static 10 minutes, added entry and be modulated into the base pastes that viscosity is 170CPS, will super fine nonwoven fabric contain and be immersed in described base pastes, solidify rear extraction, washing, oven dry, softness, dyeing, mill skin until slurry and make base of the described end.
The dry method veneer,
preparation table surface layer: with the 4th waterborne polyurethane resin high-speed stirred after 30 minutes, be under 50 ℃ in temperature, add water-based levelling agent and water-based thickener, stir after 15 minutes, add the water-based defoamer, stirred 2 minutes, static 10 minutes, add water and be modulated into the superficial layer slurry that viscosity is 1200CPS, superficial layer slurry gapless is coated with scrapes on carrier side, form the coating of 2, move with the speed of 8m/min being coated with the carrier side of scraping the superficial layer slurry, respectively through 65 ℃, the oven dry that progressively heats up of 75 ℃ of temperature sections, the length of each temperature section is 3m, rotation speed of fan is 300 rev/mins, form superficial layer,
in preparation the second intermediate layer on superficial layer: with the 3rd waterborne polyurethane resin high-speed stirred after 30 minutes, be under 50 ℃ in temperature, add water-based levelling agent and water-based thickener, stir after 15 minutes, add the water-based defoamer, stirred 2 minutes, static 10 minutes, add entry and be modulated into the second intermediate layer slurry that viscosity is 2200CPS, the second intermediate layer slurry is coated with scrapes on superficial layer, form the coating of 12, move with the speed of 8m/min being coated with the carrier side of scraping the second intermediate layer slurry, respectively through 75 ℃, 80 ℃, 85 ℃, the oven dry that progressively heats up of 90 ℃ of temperature sections, the length of each temperature section is 4m, rotation speed of fan is 400 rev/mins, oven dry forms the second intermediate layer,
in preparation the first intermediate layer on the second intermediate layer: with the second waterborne polyurethane resin high-speed stirred after 50 minutes, be under 70 ℃ in temperature, add water-based levelling agent and water-based thickener, stir after 20 minutes, add the water-based defoamer, stirred 3 minutes, static 10 minutes, add entry and be modulated into the first intermediate layer slurry that viscosity is 3300CPS, the first intermediate layer slurry is coated with scrapes on the second intermediate layer, form the coating of 12, move with the speed of 8m/min being coated with the carrier side of scraping by the first intermediate layer slurry, respectively through 80 ℃, 85 ℃, 90 ℃, the oven dry that progressively heats up of 95 ℃ of temperature sections, the length of each temperature section is 4m, rotation speed of fan is 500 rev/mins, oven dry forms the first intermediate layer,
Preparing tack coat on the first intermediate layer: with the first waterborne polyurethane resin high-speed stirred after 50 minutes, be under 70 ℃ in temperature, add water-based levelling agent and water-based thickener, stir after 15 minutes, add the water-based defoamer, stirred 2 minutes, static 10 minutes, add entry and be modulated into the slurry that viscosity is 5300CPS, the tack coat slurry is coated with scrapes on the intermediate layer, form the tack coat of 12;
The mode that the employing wet method is fitted after 100 ℃ of lower high temperature preheatings, is fitted base of the described end with tack coat and base of the described end, laminate pressure is 0.8MPa, dries under 100 ℃ after fitting, and in drying course, the applying thing moves 20 meters with the speed of 6m/min; After oven dry, cooling peeling off forms super fine environmental protection flame retardant synthetic leather.
Embodiment 3
Nonwoven fabric: one synthetic leather company of Zhejiang section produces.
Base pastes: modulus is 30kg/cm
2, molecular weight is 0.5 * 10
5The 5th waterborne polyurethane resin 90g, water 75g, water-based levelling agent 2g, water-based defoamer 2g.
The superficial layer slurry: modulus is 30kg/cm
2, molecular weight is 0.5 * 10
5The 4th waterborne polyurethane resin 90g, water 35g, water-based levelling agent 2g, water-based thickener 1g, water-based defoamer 1g;
The second intermediate layer slurry: modulus is 60kg/cm
2, molecular weight is 0.6 * 10
5The 3rd waterborne polyurethane resin 90g, water 25g, water-based levelling agent 1g, water-based thickener 1.5g, water-based defoamer 1.5g;
The first intermediate layer slurry: modulus is 60kg/cm
2, molecular weight is 0.6 * 10
5The second waterborne polyurethane resin 90g, water 25g, water-based levelling agent 1g, water-based thickener 1.5g, water-based defoamer 1.5g;
The tack coat slurry; Modulus is 30kg/cm
2, molecular weight is 0.5 * 10
5The first waterborne polyurethane resin 90g, water 15g, water-based levelling agent 1g, water-based thickener 2g, water-based defoamer 1.5g.
The preparation method:
The production of nonwoven fabric;
The wet method base, with waterborne polyurethane resin high-speed stirred 50 minutes, add entry and be modulated into the base pastes that viscosity is 160CPS, will super fine nonwoven fabric contain and be immersed in described base pastes, solidify rear extraction, washing, oven dry, softness, dyeing, mill skin until slurry and make base of the described end.
The dry method veneer,
preparation table surface layer: with the waterborne polyurethane resin high-speed stirred after 30 minutes, be under 60 ℃ in temperature, add water-based levelling agent and water-based thickener, stir after 20 minutes, add the water-based defoamer, stirred 3 minutes, static 10 minutes, add water and be modulated into the superficial layer slurry that viscosity is 1000CPS, superficial layer slurry gapless is coated with scrapes on carrier side, form the coating of 2, move with the speed of 9m/min being coated with the carrier side of scraping the superficial layer slurry, respectively through 70 ℃, the oven dry that progressively heats up of 80 ℃ of temperature sections, the length of each temperature section is 3m, rotation speed of fan is 300 rev/mins, form superficial layer,
in preparation the second intermediate layer on superficial layer: with the waterborne polyurethane resin high-speed stirred after 30 minutes, be under 50 ℃ in temperature, add water-based levelling agent and water-based thickener, stir after 15 minutes, add the water-based defoamer, stirred 2 minutes, static 10 minutes, add entry and be modulated into the second intermediate layer slurry that viscosity is 2000CPS, the second intermediate layer slurry is coated with scrapes on superficial layer, form the coating of 12, move with the speed of 8m/min being coated with the carrier side of scraping the second intermediate layer slurry, respectively through 70 ℃, 75 ℃, 80 ℃, the oven dry that progressively heats up of 85 ℃ of temperature sections, the length of each temperature section is 4m, rotation speed of fan is 400 rev/mins, oven dry forms the second intermediate layer,
in preparation the first intermediate layer on the second intermediate layer: with the waterborne polyurethane resin high-speed stirred after 30 minutes, be under 50 ℃ in temperature, add water-based levelling agent and water-based thickener, stir after 15 minutes, add the water-based defoamer, stirred 2 minutes, static 10 minutes, add entry and be modulated into the first intermediate layer slurry that viscosity is 3000CPS, the first intermediate layer slurry is coated with scrapes on the second intermediate layer, form the coating of 12, move with the speed of 8m/min being coated with the carrier side of scraping by the first intermediate layer slurry, respectively through 75 ℃, 80 ℃, 85 ℃, the oven dry that progressively heats up of 90 ℃ of temperature sections, the length of each temperature section is 4m, rotation speed of fan is 500 rev/mins, oven dry forms the first intermediate layer,
Preparing tack coat on the first intermediate layer: with the waterborne polyurethane resin high-speed stirred after 30 minutes, be under 50 ℃ in temperature, add water-based levelling agent and water-based thickener, stir after 15 minutes, add the water-based defoamer, stirred 2 minutes, static 10 minutes, add entry and be modulated into the slurry that viscosity is 5000CPS, the tack coat slurry is coated with scrapes on the intermediate layer, form the tack coat of 12;
The mode that the employing wet method is fitted after 100 ℃ of lower high temperature preheatings, is fitted base of the described end with tack coat and base of the described end, laminate pressure is 0.8MPa, dries under 100 ℃ after fitting, and in drying course, the applying thing moves 20 meters with the speed of 6m/min; After oven dry, cooling peeling off forms super fine environmental protection flame retardant synthetic leather.
Embodiment 4
Nonwoven fabric: one synthetic leather company of Zhejiang section produces.
Base pastes: modulus is 30kg/cm
2, molecular weight is 0.5 * 10
5The 5th waterborne polyurethane resin 90g, water 75g, water-based levelling agent 2g, water-based defoamer 2g.
The superficial layer slurry: modulus is 30kg/cm
2, molecular weight is 0.5 * 10
5The 4th waterborne polyurethane resin 90g, water 35g, water-based levelling agent 2g, water-based thickener 1g, water-based defoamer 1g;
The second intermediate layer slurry: modulus is 60kg/cm
2, molecular weight is 0.6 * 10
5The 3rd waterborne polyurethane resin 90g, water 25g, water-based levelling agent 1g, water-based thickener 1.5g, water-based defoamer 1.5g;
The 3rd intermediate layer slurry: modulus is 60kg/cm
2, molecular weight is 0.6 * 10
5The 6th waterborne polyurethane resin 90g, water 25g, water-based levelling agent 1g, water-based thickener 1.5g, water-based defoamer 1.5g;
The first intermediate layer slurry: modulus is 60kg/cm
2, molecular weight is 0.6 * 10
5The second waterborne polyurethane resin 90g, water 25g, water-based levelling agent 1g, water-based thickener 1.5g, water-based defoamer 1.5g;
The tack coat slurry; Modulus is 30kg/cm
2, molecular weight is 0.5 * 10
5The first waterborne polyurethane resin 90g, water 15g, water-based levelling agent 1g, water-based thickener 2g, water-based defoamer 1.5g.
Preparation method: with embodiment 3
Wherein, also comprise the making in the 3rd intermediate layer between the second intermediate layer and the first intermediate layer.
in preparation the 3rd intermediate layer on the second intermediate layer: with the 6th waterborne polyurethane resin high-speed stirred after 30 minutes, be under 50 ℃ in temperature, add water-based levelling agent and water-based thickener, stir after 15 minutes, add the water-based defoamer, stirred 2 minutes, static 10 minutes, add entry and be modulated into the 3rd intermediate layer slurry that viscosity is 2500CPS, the first intermediate layer slurry is coated with scrapes on the second intermediate layer, form the coating of 12, move with the speed of 8m/min being coated with the carrier side of scraping by the 3rd intermediate layer slurry, respectively through 75 ℃, 80 ℃, 85 ℃, the oven dry that progressively heats up of 90 ℃ of temperature sections, the length of each temperature section is 4m, rotation speed of fan is 500 rev/mins, oven dry forms the 3rd intermediate layer,
Preparation the first intermediate layer on the 3rd intermediate layer.
Comparative Examples 1
Raw material:
Nonwoven fabric: common double suede base cloth
Base pastes: polyethers, 100 parts of poly-calcareous type ammonia ester resins, DMF50 part, 1 part, solvent-borne type colorant, 5 parts of wood powders.
The superficial layer slurry: polyethers, 100 parts of poly-calcareous type ammonia ester resins, 10 parts of solvents, 15 parts, colorant, 1 part of levelling agent, help 1 part of stripping meter.
Tack coat slurry: polyethers, 100 parts of poly-calcareous type ammonia ester resins, 10 parts of solvents, 10 parts, colorant, 0.5 part of levelling agent.
Preparation technology:
The first step: two suede base cloth-impregnations-damping-wet coating-solidify-wash-dry-PU wet method base material
Second step: the surperficial slurry of release liners-unreeling-smear-dry-smear tack coat slurry-preliminary drying-with PU wet method base material applying-oven dry-maturation-synthetic leather.
Below Waterborne synthetic leather that embodiment of the present invention 1-4 is prepared and have the various aspects of performance of the prepared synthetic leather of Comparative Examples 1 to make a concrete analysis of.
The contrast of feel and outward appearance
The outward appearance observed result of the synthetic leather that embodiment 1-4 is prepared and Comparative Examples 1 natural leather is listed in table 1.
Table 1
| Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 | Comparative Examples 1 | |
| Elasticity | Better | Better | Excellent | Excellent | Better |
| Fullness | Better | Full | Full | Full | Better |
| Pliability | Better | Excellent | Excellent | Excellent | Better |
| Graining | Clear | Normally | Clear | Clear | Clear |
Can be found out by data in table 1, compared by the common synthetic leather that the prepared Waterborne synthetic leather of the present invention and documents 1 are prepared, outward appearance and feel can both meet or exceed the level of common synthetic leather.The performance indications contrast
The outward appearance observed result of the synthetic leather that embodiment 1-4 is prepared and Comparative Examples 1 natural leather is listed in table 2.
Table 2
| Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 | Comparative Examples 1 | |
| Tensile strength (N/mm 2) | 13 | 15 | 12 | 15 | 15 |
| Tearing strength (N/mm 2) | 110 | 108 | 103 | 115 | 120 |
| Water permeability (mg/10cm 2，24h) | 400 | 420 | 418 | 435 | 460 |
| Surface colour fastness (level) | 4.5 | 4.5 | 4.5 | 4.5 | 4.5 |
| Wear-resisting (1Kg/ turns) | 800 turn | 800 turn | 800 turn | 800 turn | 900 turn |
| Heatproof folding endurance (subzero 20 ℃, inferior) | 80000 | 85000 | 83000 | 88000 | 100000 |
Can be found out by data in table 2, the various aspects of performance of the Waterborne synthetic leather that embodiment of the present invention 1-3 is prepared is near common synthetic leather prepared in documents 1.And do not contain organic solvent in the prepared Waterborne synthetic leather of the present invention, and be the use of synthetic leather or the effect that the production of synthetic leather has all realized environmental protection, more be conducive to health.
These are only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (9)
1. a super fine environment-friendly water-based synthetic leather, is characterized in that, comprises super fine nonwoven fabric, covers the bottom on described super fine nonwoven fabric, and cover the surface layer on described bottom, and wherein, described surface layer comprises that 4 layers are coated with by slurry and scrape the coating that forms, and are respectively:
Tack coat, cover described bottom above, the slurry of described tack coat comprises following raw material by weight:
First waterborne polyurethane resin 80-100 part, water 10-20 part, aqueous promoter 0-5 part, wherein said aqueous promoter is not 0 part;
The first intermediate layer, cover described tack coat above, the slurry in described the first intermediate layer comprises following raw material by weight:
Second waterborne polyurethane resin 80-100 part, water 20-30 part, aqueous promoter 0-5 part, wherein said aqueous promoter is not 0 part;
The second intermediate layer, cover described the first intermediate layer above, the slurry in described the second intermediate layer comprises following raw material by weight:
The 3rd waterborne polyurethane resin 80-100 part, water 20-30 part, aqueous promoter 0-5 part, wherein said aqueous promoter is not 0 part;
Superficial layer, cover described the second intermediate layer above, the slurry of described superficial layer comprises following raw material by weight;
The 4th waterborne polyurethane resin 80-100 part, water 30-40 part, aqueous promoter 0-5 part, wherein said aqueous promoter is not 0 part;
Wherein, described the first waterborne polyurethane resin is that modulus is 25-35kg/cm
2, molecular weight is 0.5 * 10
5-0.6 * 10
5Polyurethane resin; Described the second waterborne polyurethane resin is that modulus is 55-65kg/cm
2, molecular weight is 0.6 * 10
5-0.7 * 10
5Polyurethane resin; Described the 3rd waterborne polyurethane resin is that modulus is 55-65kg/cm
2, molecular weight is 0.6 * 10
5-0.7 * 10
5Polyurethane resin; Described the 4th waterborne polyurethane resin is that modulus is 65-75kg/cm
2, molecular weight 0.7 * 10
5-0.8 * 10
5Polyurethane resin.
2. the environment-friendly water-based synthetic leather of super fibre according to claim 1, is characterized in that, the viscosity of described tack coat slurry is 5000-5500CPS; The viscosity of described the first intermediate layer slurry is 3000-3500CPS; The viscosity of described the second intermediate layer slurry is 2000-2500CPS; The viscosity of described superficial layer slurry is 1000-1500CPS.
3. the environment-friendly water-based synthetic leather of super fibre according to claim 1, is characterized in that, described aqueous promoter is one or more in water-based thickener, water-based levelling agent, water-based defoamer.
4. the environment-friendly water-based synthetic leather of super fibre according to claim 1, it is characterized in that, base pastes in described bottom comprises by weight: the 5th waterborne polyurethane resin 80-100 part, water 70-80 part, aqueous promoter 0-5 part, described the 5th waterborne polyurethane resin are that modulus is 25-35kg/cm
2, molecular weight is 0.5 * 10
5-0.6 * 10
5Polyurethane resin.
5. the preparation method as the environment-friendly water-based synthetic leather of the described super fibre of any one in claim 1-4, is characterized in that, comprises the following steps:
The production of nonwoven fabric;
The wet method base contains described nonwoven fabric in the base pastes that is immersed in described bottom, preparation end base;
The dry method veneer, be coated with successively on carrier side and scrape the superficial layer slurry and form described superficial layer, be coated with and scrape the second intermediate layer slurry and form described the second intermediate layer, be coated with and scrape the first intermediate layer slurry and form described the first intermediate layer and be coated with and scrape the tack coat slurry and form described tack coat, generate described surface layer;
With tack coat one side in described surface layer and the base applying of the described end, oven dry, cooling, peel off and generate the environment-friendly water-based synthetic leather of described super fibre.
6. preparation method according to claim 5, is characterized in that, described dry method veneer is further comprising the steps:
The preparation of described superficial layer comprises the following steps:
After the 4th waterborne polyurethane resin high-speed stirred 30-60min, be under 50-70 ℃ in temperature, add aqueous promoter, then after stirring 15-20min, add water and be modulated into the superficial layer slurry that viscosity is 1000-1500CPS,
Superficial layer slurry gapless is coated with scrapes on carrier side, form the coating of 1-2 silk, oven dry forms superficial layer; The preparation in described the second intermediate layer comprises the following steps:
After the 3rd waterborne polyurethane resin high-speed stirred 30-60min, be under 50-70 ℃ in temperature, add aqueous promoter, then after stirring 15-20min, add entry and be modulated into the second intermediate layer slurry that viscosity is 2000-2500CPS,
The second intermediate layer slurry is coated with scrapes on superficial layer, form the coating of 8-12 silk, oven dry forms the second intermediate layer;
The preparation in described the first intermediate layer comprises the following steps:
After the second waterborne polyurethane resin high-speed stirred 30-60min, be under 50-70 ℃ in temperature, add aqueous promoter, then after stirring 15-20min, add entry and be modulated into the first intermediate layer slurry that viscosity is 3000-3500CPS,
The first intermediate layer slurry is coated with scrapes on the second intermediate layer, form the coating of 8-12 silk, oven dry forms the first intermediate layer;
The preparation of described tack coat comprises the following steps:
After the first waterborne polyurethane resin high-speed stirred 30-60min, be under 50-70 ℃ in temperature, add aqueous promoter, after stirring 15-20min again, add entry and be modulated into the slurry that viscosity is 5000-5500CPS, the tack coat slurry is coated with scrapes on the intermediate layer, form the tack coat of 2-12 silk.
7. preparation method according to claim 6, is characterized in that, described dry method veneer is further comprising the steps:
In the preparation process of described superficial layer, the step of oven dry further comprises:
To be coated with the carrier side of scraping the superficial layer slurry speed operation with 8-9m/min, through the oven dry that progressively heats up of 65-75 ℃, 75-85 ℃ temperature section, the length of each temperature section is 3m respectively, and rotation speed of fan is 300 rev/mins;
In the preparation process in described the second intermediate layer, the step of oven dry further comprises:
To be coated with the carrier side of scraping the second intermediate layer slurry speed operation with 8-9m/min, through the oven dry that progressively heats up of 65-75 ℃, 70-80 ℃, 75-85 ℃, 80-90 ℃ temperature section, the length of each temperature section is 4m respectively, and rotation speed of fan is 400 rev/mins;
In the preparation process in described the first intermediate layer, the step of oven dry further comprises:
Scrape by the speed operation with 8-9m/min of the carrier side of the first intermediate layer slurry being coated with, through the oven dry that progressively heats up of 70-80 ℃, 75-85 ℃, 80-90 ℃, 85-95 ℃ temperature section, the length of each temperature section is 4m respectively, and rotation speed of fan is 500 rev/mins.
8. preparation method according to claim 7, is characterized in that, the preparation of base of the described end is further comprising the steps:
After the 5th waterborne polyurethane resin high-speed stirred 30-60min, be under 50-70 ℃ in temperature, add aqueous promoter, then after stirring 15-20min, add entry and be modulated into the base pastes that viscosity is 150-170CPS,
Will super fine nonwoven fabric contain and be immersed in described base pastes, solidify rear extraction, washing, oven dry, softness, dyeing, mill skin until slurry and make base of the described end.
9. preparation method according to claim 8, is characterized in that, the step that tack coat one side in described surface layer and base of the described end are fitted further comprises:
The mode that adopts wet method to fit, base of the described end after 100-110 ℃ of lower high temperature preheating, is fitted tack coat and base of the described end, and laminate pressure is 0.5-0.8MPa, dry under 100-105 ℃ after fitting, in drying course, the applying thing moves 20 meters with the speed of 6m/min;
After oven dry, cooling peeling off forms super fine environment-friendly water-based synthetic leather.
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101613448A (en) * | 2009-07-10 | 2009-12-30 | 烟台道成化学有限公司 | The preparation method of a kind of waterborne polyurethane resin and dipping sizing agent for synthetic leather base material |
| CN101725052A (en) * | 2009-11-04 | 2010-06-09 | 烟台万华超纤股份有限公司 | Waterborne polyurethane resin superfiber leather and manufacturing method thereof |
| CN101942767A (en) * | 2010-07-28 | 2011-01-12 | 丽水市优耐克水性树脂科技有限公司 | Interior wall adornment leather and preparation method |
| CN101941321A (en) * | 2010-08-03 | 2011-01-12 | 丽水市优耐克水性树脂科技有限公司 | Method for manufacturing synthetic leather and synthetic leather |
| CN102115983A (en) * | 2011-01-26 | 2011-07-06 | 烟台华大化学工业有限公司 | Aqueous polyurethane superfine fiber synthetic leather and preparation method thereof |
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| CN102383316A (en) | 2012-03-21 |
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