CN103981729B - A kind of aqueous polyurethane for superfine fiber chemical leather manufacture makes face method - Google Patents
A kind of aqueous polyurethane for superfine fiber chemical leather manufacture makes face method Download PDFInfo
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Abstract
The present invention relates to a kind of aqueous polyurethane for superfine fiber chemical leather manufacture and make face method, take superfine fiber synthetic leather base cloth as base material, first, by the surface layer slurry containing compositions such as waterborne polyurethane coating agent, aqueous color paste, nano silicon, wetting agent, coupling agent and crosslinking agents, blade coating forms surface layer in release liners, and carries out drying; Then, by the binding sizing agent of the composition such as aqueous polyurethane adhesive and crosslinking agent, blade coating on surface layer, then is fitted with superfine fiber synthetic leather base cloth; Finally, the superfine fiber chemical leather with aqueous polyurethane coating is obtained through super-dry, cooling, stripping.Adopt and thisly make face method, the solvent contamination problem that superfine fiber chemical leather makes face can not only be solved, and the superfine fiber chemical leather obtained, peel strength is greater than 20 (N/20mm), surface color fastness, xerotripsis is greater than 4 grades, and wet rubbing is greater than 3.5 grades, and water vapor permeability is greater than 1.1 (mg/cm
2h).
Description
Technical field
The present invention relates to superfine fiber chemical leather technical field, particularly a kind of aqueous polyurethane for superfine fiber chemical leather manufacture makes face method.
Background technology
Superfine fibre is the one of development in recent years fibre in differentiation rapidly, is the Typical Representative of novel synthetic fiber.Do not define accurately in the world at present, various countries' definition is slightly different, but is all definition standard with line density.PET line density is referred to as superfine fibre lower than 1.0dtex, PA line density lower than the single fiber of 1.0dtex by the textiles association of Germany, monofilament fineness is that the fiber of 0.3dtex ~ 1.0dtex is defined as superfine fibre by the PET committee of the U.S., AKZO then thinks that the upper limit of superfine fibre should be 0.3dtex, Italian then the fiber of below 0.5dtex is called superfine fibre, domesticly substantially monofilament fineness is referred to as superfine fibre at the fiber of below 1.1dtex at present, and be less than 0.1dtex be called superfine fibre.The synthetic fiber of each large kind all can spin superfine fibre, as polyester, polyamide, polyacrylonitrile, polypropylene fibre etc.Because the line density of superfine fibre monofilament is significantly less than general fibre, the thinnest reached at 0.0001dtex, due to the sharply reduction of monofilament linear density, just determining superfine fibre has many characteristics being different from conventional fibre.
Along with the development of modern science and technology, the production system of synthetic leather constantly absorbs the new and high technology of other industry, if initial artificial leather is first generation product, so synthetic leather is exactly second generation product, and the appearance of superfine fiber polyurethane leather just belongs to third generation product naturally.This product take not weaving fabric of superfine fiber as base material, dipping has the polyurethane slurry of open-celled structure, the huge surface area of superfine fibre and strong water imbibition effect are played, the part moisture-absorption characteristics making superfine fiber polyurethane leather be provided with leather to have, no matter thus from internal microstructure, or appearance tactile impression and the aspect such as physical characteristic and people's snugness of fit, all with leather closely.In addition, superfine fiber chemical leather has exceeded leather in chemical-resistant stability, mass uniformity, large production and processing adaptability and waterproof, anti-mildew etc.
The appearance of superfine fiber chemical leather, most important meaning is the status that this product improves whole industry.Superfine fibre and products thereof to take the lead in Study and Development primarily of Japan, starts to commercially produce, and achieve huge success beginning of the seventies late 1960s in synthetic leather product development.Nineteen sixty-five, Kuraray Co., Ltd. mainstream product " Kuraray Na " comes out, and has pulled open the history curtain that superfine fibre is produced.Japanese Kanebo Ltd in 1969 starts to produce shoe lining leather use, and the synthetic leather of commodity " Bereza " by name, selling point is abrasive polishing materials.1970, first toray Co., Ltd. was proposed the artificial suede shape synthetic leather " Ecsaina " that sea-island composite fiber manufactures.1981, Kuraray company started selling grain type dermatine " Sofrina ".After this high performance superfine fiber chemical leather progressively moves towards market, mainly contain " SavinaDP " of Zhong Fang company, " HilakeElettes " of Di Ren company, " HepaWool " of Asahi Kasei Corporation, " Nordfaser " of Germany, gondola " Anicfibre " etc.Du pont company, ICI company of Britain, German Hirst company, Eastern Europe, the former Soviet Union also add exploitation ranks in succession subsequently.At present, the production of superfine fiber chemical leather mainly concentrates on the countries such as Japan, China, Korea S.
The production of China's superfine fiber chemical leather is grown up behind the basis of Introduced from Japan Kuraray company technique in nineteen eighty-three by Yantai Synthetic Leather General Factory (rear title ten thousand Hua Chaoxian limited companies).Adopted lotus root shape porous fibre at that time, produce light face emulational leather, the fiber number that this factory's independent development in 1997 is different from imported technology is 0.01 dawn not figured type island superfine fiber, batch production " great Fu leather " ultra-fine emulational leather of light Noodles in 1999, and expanded production capacity further in 2003 on this basis, go up Article 3 emulational leather production line.After this, Changshu, Jiangsu Province synthetic leather head factory (being now the special leather Co., Ltd of Changshu bass) introduce technology and equipment basis on succeed in developing figured type superfine fibre height imitation leather, Shanghai Hua Feng group has succeeded in developing the ultra-fine imitation leather in indefinite island, and carrying out large-scale production rapidly, this group also has 3 production lines at present; In addition, nineteen ninety-five, Shandong Tongda Haidao New Material Co., Ltd successfully develops the ultra-fine emulational leather in indefinite island with Chinese characteristics, fibre fineness the most carefully can reach for 0.003 ~ 0.0005 dawn, there is independent intellectual property right, and develop into 4 production lines rapidly, become one of maximum ultra-fine emulational leather manufacturing enterprise of China, in addition Wen Zhou the Yellow River, east, Laiwu Thailand, Zhejiang section skill, Mei Sheng, Wenzhou Ge Jibu Co., Ltd, Shandong Jin Feng, Zibo friendship machinery; The a collection of enterprises such as Wuxi Zhong Jin plastics Co., Ltd of Jiangsu echo group have also all built up production line and have put into production successively, and also in 2005, the year-end ultra-fine emulational leather production line building up annual output 4000000 square metres put into production with the glad cooperation of Zhejiang Jiaxing standing grain in Kuraray company.
The development of China's superfine fiber chemical leather industry only has the course of more than ten years, obtains fast development in recent years, and China's Mainland has become the largest production base of global superfine fiber chemical leather.According to State Statistics Bureau's information material display, China's annual total import and export volume 36.36 of superfine fiber chemical leather in 2011 is with dollar, its middle outlet 10.7 hundred million meters (56.96 ten thousand tons), increase by 12.96 on a year-on-year basis, export volume account for 23.36% of total output, export trade volume 30.4 hundred million dollars, increases by 35.11% on a year-on-year basis, starts to define the third generation production development new historical stage.
At present, in superfine fiber chemical leather technical field, usually adopt solvent-borne type dry method to move film and carry out making face, serious solvent contamination can be caused to environment, and to make the superfine fiber chemical leather water vapor permeability that surface technology obtains very poor through this, causes its sanitation performance not high, make it apply and be restricted.The trend of current technical development is as follows: (1) adopts aqueous polyurethane to make surface technology and solves solvent contamination problem.(2) by coupling and crosslinking technological, resistance to water and the mechanical property of aqueous coating is improved.
Summary of the invention
The object of the present invention is to provide a kind of aqueous polyurethane for superfine fiber chemical leather manufacture to make face method, the method effectively can solve prior art solvent contamination problem, and improves resistance to water, the mechanical property of superfine fiber chemical leather, and sanitation performance.
The present invention is achieved through the following technical solutions: comprise the following steps:
1) preparation of surface layer slurry
With weight parts, aqueous polyurethane finishing agent 80 ~ 90 parts, aqueous color paste 3 ~ 10 parts, nano silicon 1 ~ 2 part, coupling agent 0.1 ~ 0.5 part, crosslinking agent 0.1 ~ 0.5 part of Homogeneous phase mixing, obtains surface layer slurry;
2) blade coating of surface layer
First, by surface layer slurry blade coating in release liners, and to control coating layer thickness be 0.02 ~ 0.1mm; Then dry process, obtains the release liners with surface layer;
3) preparation of adhesive layer slurry
With weight parts, aqueous polyurethane binder 90 ~ 98 parts, crosslinking agent 0.5 ~ 2 part mix, and obtain adhesive layer slurry;
4) blade coating of adhesive layer
First, by adhesive layer slurry blade coating in step 2) on the surface layer of gained with the release liners of surface layer, the thickness controlling adhesive layer slurry coating is 0.05 ~ 0.2mm; Then, fit with the release liners of binding sizing agent coating and superfine fiber synthetic leather base cloth; Last carry out drying process, cooling successively, by release liners stripping, namely complete aqueous polyurethane and make face on superfine fiber synthetic leather base cloth.
Further, step 2) concrete operations of described drying process are: putting into baking oven first segment baking oven by scraping the release liners scribbling surface layer slurry, at 60 ~ 90 DEG C, drying 1 ~ 2min, then enter second section baking oven, at 90 ~ 150 DEG C, dry 1 ~ 2min, make coating bone dry.
Further, step 4) concrete operations of described drying process are: first put into first segment baking oven, at 90 ~ 110 DEG C, dry 1 ~ 2min, then enter second section baking oven, at 110 ~ 150 DEG C, dry 2 ~ 3min.
Further, step 1) described waterborne polyurethane coating agent is aq. polyurethane resin.
Further, step 1) described coupling agent is silane coupler.
Further, step 1) and 3) described crosslinking agent is water-dispersed polyisocyanic ester cross-linking agent.
Further, step 1) described nano silicon is hydrophilic nano silica.
Further, step 1) described aqueous color paste is water-base resin colouring agent.
Further, step 3) described aqueous polyurethane adhesive is aq. polyurethane resin.
Further, described blade coating uses doctor knife coater.
Compared with prior art, the present invention has following useful technique effect: one, aqueous polyurethane is adopted in surface layer slurry, aqueous polyurethane adhesive is adopted in adhesive layer slurry, due on aqueous polyurethane with hydrophilic radical, aqueous polyurethane coating is strengthened the transmission capacity of water, show as superfine fiber chemical leather vapor pervious performance improve, sanitation performance is better, effectively solves the solvent contamination problem of prior art simultaneously.Two, silane coupler is added in surface layer slurry, can erect between inorganic substances and the interface of organic substance " molecular bridge ", the material of two kinds of character great disparities is linked together, effectively can fix the coloring material in aqueous color paste, improve look rubbing fastness and the bonding strength of coating surface, effectively improve mechanical property.By superfine fiber chemical leather prepared by method provided by the invention, peel strength is greater than 20 (N/20mm), surface color fastness, and xerotripsis is greater than 4 grades, and wet rubbing is greater than 3.5 grades, and water vapor permeability is greater than 1.1 (mg/cm
2h).
Further, by using water-dispersed polyisocyanic ester cross-linking agent, can be formed crosslinked between the macromolecular chain of aqueous polyurethane, further improving the resistance to water of coating surface.
Further, use hydrophilic nano silica, can not only well be dispersed in surface layer slurry, and due to its particle diameter of nano silicon very little, specific area is large, and superficial attractive forces is strong, and surface energy is large, make it have good reinforcing, improve surface abrasion resistance and the mechanical property of aqueous polyurethane coating further.
Detailed description of the invention
Below in conjunction with embodiment, the present invention is described in further detail.
A kind of aqueous polyurethane for superfine fiber chemical leather manufacture provided by the invention makes face method, comprises the following steps:
1) preparation of surface layer slurry
With weight parts, aqueous polyurethane finishing agent 80 ~ 90 parts, aqueous color paste 3 ~ 10 parts, nano silicon 1 ~ 2 part, coupling agent 0.1 ~ 0.5 part, crosslinking agent 0.1 ~ 0.5 part of Homogeneous phase mixing, obtains surface layer slurry;
Wherein waterborne polyurethane coating agent is aq. polyurethane resin, as synthetic leather surface layer use polyurethane resin DEG-3751, DEG-3731, DEG-3732 etc. of Yantai Daocheng Chemicals Co., Ltd.;
Coupling agent is silane coupler, if Nanjing is through the silane resin acceptor kh-550 of Tian Wei Chemical Co., Ltd.; Crosslinking agent is water-dispersed polyisocyanic ester cross-linking agent, as water-dispersed polyisocyanic ester cross-linking agent EC600, EC601, EC602 etc. of Shanghai Si Sheng polymeric material Co., Ltd.
Nano silicon is hydrophilic nano silica, as the LF33 type hydrophilic nano silica of Xiushan Mountain Long Fei new material Co., Ltd; Aqueous color paste is industrialized water-base resin colouring agent.
2) blade coating of surface layer
First, use doctor knife coater by surface layer slurry blade coating in release liners, and to control coating layer thickness be 0.02 ~ 0.1mm; Then dry process, obtains the release liners with surface layer; The concrete operations of dry process are: put into baking oven first segment baking oven by scraping the release liners scribbling surface layer slurry, dry 1 ~ 2min, then enter second section baking oven at 60 ~ 90 DEG C, dry 1 ~ 2min, make coating bone dry at 90 ~ 150 DEG C.
3) preparation of adhesive layer slurry
With weight parts, aqueous polyurethane binder 90 ~ 98 parts, crosslinking agent 0.5 ~ 2 part mix, and obtain adhesive layer slurry; Aqueous polyurethane adhesive is aq. polyurethane resin, as synthetic leather surface layer use polyurethane resin DG-1201, DG-1208, DG-1209 etc. of Yantai Daocheng Chemicals Co., Ltd..Crosslinking agent is water-dispersed polyisocyanic ester cross-linking agent, as water-dispersed polyisocyanic ester cross-linking agent EC600, EC601, EC602 etc. of Shanghai Si Sheng polymeric material Co., Ltd.
4) blade coating of adhesive layer
First, doctor knife coater is used by adhesive layer slurry blade coating in step 2) on the surface layer of gained with the release liners of surface layer, the thickness controlling adhesive layer slurry coating is 0.05 ~ 0.2mm; Then, fit with the release liners of binding sizing agent layer and superfine fiber synthetic leather base cloth; Last carry out drying process, cooling successively, by release liners stripping, namely complete aqueous polyurethane and make face on superfine fiber synthetic leather base cloth.
The concrete operations of dry process are: first put into first segment baking oven, dry 1 ~ 2min, then enter second section baking oven at 90 ~ 110 DEG C, at 110 ~ 150 DEG C, dry 2 ~ 3min.
Embodiment 1
Comprise the following steps:
1) preparation of surface layer slurry
With weight parts, aqueous polyurethane finishing agent 80 parts, aqueous color paste 3 parts, nano silicon 1 part, coupling agent 0.1 part, crosslinking agent 0.1 part of Homogeneous phase mixing, obtains surface layer slurry;
Wherein aqueous polyurethane is the synthetic leather surface layer use polyurethane resin DEG-3751 of Yantai Daocheng Chemicals Co., Ltd.; Coupling agent is the silane resin acceptor kh-550 of Nanjing through Tian Wei Chemical Co., Ltd.; Crosslinking agent is the water-dispersed polyisocyanic ester cross-linking agent EC600 of ShangHai SiSheng polymer Materials Co., Ltd.Nano silicon is the LF33 type hydrophilic nano silica of Xiushan Mountain Long Fei new material Co., Ltd; Aqueous color paste is industrialized water-base resin colouring agent,
2) blade coating of surface layer
First, use doctor knife coater by surface layer slurry blade coating in release liners, and to control coating layer thickness be 0.02mm; Then dry process is to coating bone dry, obtains the release liners with surface layer; The concrete operations of dry process are: putting into baking oven first segment baking oven by scraping the release liners scribbling surface layer slurry, drying 1min, then entering second section baking oven, at 90 DEG C, drying 1min, make coating bone dry at 60 DEG C.
3) preparation of adhesive layer slurry
With weight parts, aqueous polyurethane binder 90 parts, crosslinking agent 0.5 part mix, and obtain adhesive layer slurry; Aqueous polyurethane adhesive is the synthetic leather surface layer use polyurethane resin DG-1201 of Yantai Daocheng Chemicals Co., Ltd..Crosslinking agent is the water-dispersed polyisocyanic ester cross-linking agent EC600 of ShangHai SiSheng polymer Materials Co., Ltd.
4) blade coating of adhesive layer
First, doctor knife coater is used by adhesive layer slurry blade coating in step 2) on the surface layer of gained with the release liners of surface layer, the thickness controlling adhesive layer slurry coating is 0.05mm; Then, fit with the release liners of binding sizing agent and superfine fiber synthetic leather base cloth; Last carry out drying process, cooling successively, by release liners stripping, namely complete aqueous polyurethane and make face on superfine fiber synthetic leather base cloth.
The concrete operations of dry process are: first put into first segment baking oven, at 90 DEG C, dry 2min, then enter second section baking oven, at 110 DEG C, dry 3min.
Embodiment 2
Comprise the following steps:
1) preparation of surface layer slurry
With weight parts, aqueous polyurethane finishing agent 90 parts, aqueous color paste 10 parts, nano silicon 2 parts, coupling agent 0.5 part, crosslinking agent 0.5 part of Homogeneous phase mixing, obtains surface layer slurry;
Wherein waterborne polyurethane coating agent is the synthetic leather surface layer use polyurethane resin DEG-3731 of Yantai Daocheng Chemicals Co., Ltd.; Coupling agent is the silane resin acceptor kh-550 of Nanjing through Tian Wei Chemical Co., Ltd.; Crosslinking agent is the water-dispersed polyisocyanic ester cross-linking agent EC601 of ShangHai SiSheng polymer Materials Co., Ltd.Nano silicon is the LF33 type hydrophilic nano silica of Xiushan Mountain Long Fei new material Co., Ltd; Aqueous color paste is industrialized water-base resin colouring agent,
2) blade coating of surface layer
First, use doctor knife coater by surface layer slurry blade coating in release liners, and to control coating layer thickness be 0.1mm; Then dry process, obtains the release liners with surface layer; The concrete operations of dry process are: putting into baking oven first segment baking oven by scraping the release liners scribbling surface layer slurry, drying 1min, then entering second section baking oven, at 150 DEG C, drying 1min, make coating bone dry at 90 DEG C.
3) preparation of adhesive layer slurry
With weight parts, aqueous polyurethane binder 98 parts, crosslinking agent 2 parts mix, and obtain adhesive layer slurry; Aqueous polyurethane adhesive is the synthetic leather surface layer use polyurethane resin DG-1208 of Yantai Daocheng Chemicals Co., Ltd..Crosslinking agent is the water-dispersed polyisocyanic ester cross-linking agent EC600 of ShangHai SiSheng polymer Materials Co., Ltd.
4) blade coating of adhesive layer
First, doctor knife coater is used by adhesive layer slurry blade coating in step 2) on the surface layer of gained with the release liners of surface layer, the thickness controlling adhesive layer slurry coating is 0.2mm; Then, fit with the release liners of binding sizing agent layer and superfine fiber synthetic leather base cloth; Last carry out drying process, cooling successively, by release liners stripping, namely complete aqueous polyurethane and make face on superfine fiber synthetic leather base cloth.
The concrete operations of dry process are: first put into first segment baking oven, at 110 DEG C, dry 1min, then enter second section baking oven, at 150 DEG C, dry 2min.
Embodiment 3
Comprise the following steps:
1) preparation of surface layer slurry
With weight parts, aqueous polyurethane finishing agent 85 parts, aqueous color paste 5 parts, nano silicon 2 parts, coupling agent 0.3 part, crosslinking agent 0.4 part of Homogeneous phase mixing, obtains surface layer slurry;
Wherein waterborne polyurethane coating agent is the synthetic leather surface layer use polyurethane resin DEG-3732 of Yantai Daocheng Chemicals Co., Ltd.; Coupling agent is the silane resin acceptor kh-550 of Nanjing through Tian Wei Chemical Co., Ltd.; Crosslinking agent is the water-dispersed polyisocyanic ester cross-linking agent EC602 of ShangHai SiSheng polymer Materials Co., Ltd.Nano silicon is the LF33 type hydrophilic nano silica of Xiushan Mountain Long Fei new material Co., Ltd; Aqueous color paste is industrialized water-base resin colouring agent.
2) blade coating of surface layer
First, use doctor knife coater by surface layer slurry blade coating in release liners, and to control coating layer thickness be 0.08mm; Then dry process, obtains the release liners with surface layer; The concrete operations of dry process are: putting into baking oven first segment baking oven by scraping the release liners scribbling surface layer slurry, drying 1min, then entering second section baking oven, at 140 DEG C, drying 1min, make coating bone dry at 80 DEG C.
3) preparation of adhesive layer slurry
With weight parts, aqueous polyurethane binder 95 parts, crosslinking agent 1.5 parts mix, and obtain adhesive layer slurry; Aqueous polyurethane adhesive is the synthetic leather surface layer use polyurethane resin DG-1209 of Yantai Daocheng Chemicals Co., Ltd..Crosslinking agent is the water-dispersed polyisocyanic ester cross-linking agent EC602 of ShangHai SiSheng polymer Materials Co., Ltd.
4) blade coating of adhesive layer
First, doctor knife coater is used by adhesive layer slurry blade coating in step 2) on the surface layer of gained with the release liners of surface layer, the thickness controlling adhesive layer slurry coating is 0.15mm; Then, fit with the release liners of binding sizing agent layer and superfine fiber synthetic leather base cloth; Last carry out drying process, cooling successively, by release liners stripping, namely complete aqueous polyurethane and make face on superfine fiber synthetic leather base cloth.
The concrete operations of dry process are: first put into first segment baking oven, at 105 DEG C, dry 1min, then enter second section baking oven, at 140 DEG C, dry 2.5min.
Embodiment 4
Comprise the following steps:
1) preparation of surface layer slurry
With weight parts, aqueous polyurethane finishing agent 88 parts, aqueous color paste 4 parts, nano silicon 1.5 parts, coupling agent 0.5 part, crosslinking agent 0.1 part of Homogeneous phase mixing, obtains surface layer slurry;
Wherein waterborne polyurethane coating agent is the synthetic leather surface layer use polyurethane resin DEG-3731 of Yantai Daocheng Chemicals Co., Ltd.; Coupling agent is the silane resin acceptor kh-550 of Nanjing through Tian Wei Chemical Co., Ltd.; Crosslinking agent is the water-dispersed polyisocyanic ester cross-linking agent EC602 of ShangHai SiSheng polymer Materials Co., Ltd.Nano silicon is the LF33 type hydrophilic nano silica of Xiushan Mountain Long Fei new material Co., Ltd; Aqueous color paste is industrialized water-base resin colouring agent.
2) blade coating of surface layer
First, use doctor knife coater by surface layer slurry blade coating in release liners, and to control coating layer thickness be 0.1mm; Then dry process, obtains the release liners with surface layer; The concrete operations of dry process are: putting into baking oven first segment baking oven by scraping the release liners scribbling surface layer slurry, drying 2min, then entering second section baking oven, at 100 DEG C, drying 2min, make coating bone dry at 70 DEG C.
3) preparation of adhesive layer slurry
With weight parts, aqueous polyurethane binder 92 parts, crosslinking agent 1 part mix, and obtain adhesive layer slurry; Aqueous polyurethane adhesive is the synthetic leather surface layer use polyurethane resin DG-1201 of Yantai Daocheng Chemicals Co., Ltd..Crosslinking agent is the water-dispersed polyisocyanic ester cross-linking agent EC600 of ShangHai SiSheng polymer Materials Co., Ltd.
4) blade coating of adhesive layer
First, doctor knife coater is used by adhesive layer slurry blade coating in step 2) on the surface layer of gained with the release liners of surface layer, the thickness controlling adhesive layer slurry coating is 0.1mm; Then, fit with the release liners of binding sizing agent layer and superfine fiber synthetic leather base cloth; Last carry out drying process, cooling successively, by release liners stripping, namely complete aqueous polyurethane and make face on superfine fiber synthetic leather base cloth.
The concrete operations of dry process are: first put into first segment baking oven, at 100 DEG C, dry 1.5min, then enter second section baking oven, at 150 DEG C, dry 2min.
Embodiment 5
Comprise the following steps:
1) preparation of surface layer slurry
With weight parts, aqueous polyurethane finishing agent 82 parts, aqueous color paste 9 parts, nano silicon 1.2 parts, coupling agent 0.1 part, crosslinking agent 0.3 part of Homogeneous phase mixing, obtains surface layer slurry;
Wherein waterborne polyurethane coating agent is the synthetic leather surface layer use polyurethane resin DEG-3751 of Yantai Daocheng Chemicals Co., Ltd.; Coupling agent is the silane resin acceptor kh-550 of Nanjing through Tian Wei Chemical Co., Ltd.; Crosslinking agent is the water-dispersed polyisocyanic ester cross-linking agent EC602 of ShangHai SiSheng polymer Materials Co., Ltd.Nano silicon is the LF33 type hydrophilic nano silica of Xiushan Mountain Long Fei new material Co., Ltd; Aqueous color paste is industrialized water-base resin colouring agent.
2) blade coating of surface layer
First, use doctor knife coater by surface layer slurry blade coating in release liners, and to control coating layer thickness be 0.05mm; Then dry process, obtains the release liners with surface layer; The concrete operations of dry process are: putting into baking oven first segment baking oven by scraping the release liners scribbling surface layer slurry, drying 1min, then entering second section baking oven, at 90 DEG C, drying 2min, make coating bone dry at 90 DEG C.
3) preparation of adhesive layer slurry
With weight parts, aqueous polyurethane binder 98 parts, crosslinking agent 0.5 part mix, and obtain adhesive layer slurry; Aqueous polyurethane adhesive is the synthetic leather surface layer use polyurethane resin DG-1209 of Yantai Daocheng Chemicals Co., Ltd..Crosslinking agent is the water-dispersed polyisocyanic ester cross-linking agent EC600 of ShangHai SiSheng polymer Materials Co., Ltd.
4) blade coating of adhesive layer
First, doctor knife coater is used by adhesive layer slurry blade coating in step 2) on the surface layer of gained with the release liners of surface layer, the thickness controlling adhesive layer slurry coating is 0.18mm; Then, fit with the release liners of binding sizing agent layer and superfine fiber synthetic leather base cloth; Last carry out drying process, cooling successively, by release liners stripping, namely complete aqueous polyurethane and make face on superfine fiber synthetic leather base cloth.
The concrete operations of dry process are: first put into first segment baking oven, at 110 DEG C, dry 1min, then enter second section baking oven, at 150 DEG C, dry 2min.
Embodiment 6
Comprise the following steps:
1) preparation of surface layer slurry
With weight parts, aqueous polyurethane finishing agent 90 parts, aqueous color paste 5 parts, nano silicon 1.5 parts, coupling agent 0.5 part, crosslinking agent 0.3 part of Homogeneous phase mixing, obtains surface layer slurry;
Wherein waterborne polyurethane coating agent is the synthetic leather surface layer use polyurethane resin DEG-3751 of Yantai Daocheng Chemicals Co., Ltd.; Coupling agent is the silane resin acceptor kh-550 of Nanjing through Tian Wei Chemical Co., Ltd.; Crosslinking agent is the water-dispersed polyisocyanic ester cross-linking agent EC602 of ShangHai SiSheng polymer Materials Co., Ltd.Nano silicon is the LF33 type hydrophilic nano silica of Xiushan Mountain Long Fei new material Co., Ltd; Aqueous color paste is industrialized water-base resin colouring agent.
2) blade coating of surface layer
First, use doctor knife coater by surface layer slurry blade coating in release liners, and to control coating layer thickness be 0.1mm; Then dry process, obtains the release liners with surface layer; The concrete operations of dry process are: putting into baking oven first segment baking oven by scraping the release liners scribbling surface layer slurry, drying 2min, then entering second section baking oven, at 120 DEG C, drying 2min, make coating bone dry at 75 DEG C.
3) preparation of adhesive layer slurry
With weight parts, aqueous polyurethane binder 90 parts, crosslinking agent 2 parts mix, and obtain adhesive layer slurry; Aqueous polyurethane adhesive is the synthetic leather surface layer use polyurethane resin DG-1209 of Yantai Daocheng Chemicals Co., Ltd..Crosslinking agent is the water-dispersed polyisocyanic ester cross-linking agent EC600 of ShangHai SiSheng polymer Materials Co., Ltd.
4) blade coating of adhesive layer
First, doctor knife coater is used by adhesive layer slurry blade coating in step 2) on the surface layer of gained with the release liners of surface layer, the thickness controlling adhesive layer slurry coating is 0.08mm; Then, fit with the release liners of binding sizing agent layer and superfine fiber synthetic leather base cloth; Last carry out drying process, cooling successively, by release liners stripping, namely complete aqueous polyurethane and make face on superfine fiber synthetic leather base cloth.
The concrete operations of dry process are: first put into first segment baking oven, at 100 DEG C, dry 2min, then enter second section baking oven, at 130 DEG C, dry 3min.
Claims (8)
1. the aqueous polyurethane for superfine fiber chemical leather manufacture makes a face method, it is characterized in that, comprises the following steps:
1) preparation of surface layer slurry
With weight parts, aqueous polyurethane finishing agent 80 ~ 90 parts, aqueous color paste 3 ~ 10 parts, nano silicon 1 ~ 2 part, coupling agent 0.1 ~ 0.5 part, crosslinking agent 0.1 ~ 0.5 part of Homogeneous phase mixing, obtains surface layer slurry;
2) blade coating of surface layer
First, by surface layer slurry blade coating in release liners, and to control coating layer thickness be 0.02 ~ 0.1mm; Then dry process, the concrete operations of dry process are: put into baking oven first segment baking oven by scraping the release liners scribbling surface layer slurry, at 60 ~ 90 DEG C, dry 1 ~ 2min, enter second section baking oven again, at 90 ~ 150 DEG C, dry 1 ~ 2min, make coating bone dry, obtain the release liners with surface layer;
3) preparation of adhesive layer slurry
With weight parts, aqueous polyurethane binder 90 ~ 98 parts, crosslinking agent 0.5 ~ 2 part mix, and obtain adhesive layer slurry;
4) blade coating of adhesive layer
First, by adhesive layer slurry blade coating in step 2) on the surface layer of gained with the release liners of surface layer, the thickness controlling adhesive layer slurry coating is 0.05 ~ 0.2mm; Then, fit with the release liners of binding sizing agent coating and superfine fiber synthetic leather base cloth; Finally carry out drying process, cooling successively, release liners is peeled off, the concrete operations of dry process are: first put into first segment baking oven, 1 ~ 2min is dried at 90 ~ 110 DEG C, enter second section baking oven again, at 110 ~ 150 DEG C, dry 2 ~ 3min, namely complete aqueous polyurethane and make face on superfine fiber synthetic leather base cloth.
2. a kind of aqueous polyurethane for superfine fiber chemical leather manufacture according to claim 1 makes face method, it is characterized in that, step 1) described waterborne polyurethane coating agent is aq. polyurethane resin.
3. a kind of aqueous polyurethane for superfine fiber chemical leather manufacture according to claim 1 makes face method, it is characterized in that, step 1) described coupling agent is silane coupler.
4. a kind of aqueous polyurethane for superfine fiber chemical leather manufacture according to claim 1 makes face method, it is characterized in that, step 1) and 3) described crosslinking agent is water-dispersed polyisocyanic ester cross-linking agent.
5. a kind of aqueous polyurethane for superfine fiber chemical leather manufacture according to claim 1 makes face method, it is characterized in that, step 1) described nano silicon is hydrophilic nano silica.
6. a kind of aqueous polyurethane for superfine fiber chemical leather manufacture according to claim 1 makes face method, it is characterized in that, step 1) described aqueous color paste is water-base resin colouring agent.
7. a kind of aqueous polyurethane for superfine fiber chemical leather manufacture according to claim 1 makes face method, it is characterized in that, step 3) described aqueous polyurethane adhesive is aq. polyurethane resin.
8. a kind of aqueous polyurethane for superfine fiber chemical leather manufacture according to claim 1 makes face method, it is characterized in that, described blade coating uses doctor knife coater.
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| CN104195843A (en) * | 2014-08-29 | 2014-12-10 | 江苏南纬悦达纤维科技有限公司 | Quantum energy composite fabric and production process thereof |
| CN105568706A (en) * | 2015-12-18 | 2016-05-11 | 常熟市一心无纺制品有限公司 | Waterproof type polyester oil felt base cloth used for construction and building materials |
| CN105568700A (en) * | 2015-12-21 | 2016-05-11 | 福建宝利特科技股份有限公司 | Energy-saving artificial leather and preparation method thereof |
| CN105442345A (en) * | 2015-12-31 | 2016-03-30 | 昆山阿基里斯人造皮有限公司 | Artificial leather with high seam fatigue strength and manufacturing method of artificial leather |
| CN106939517B (en) * | 2017-04-01 | 2018-12-25 | 江苏科美新材料有限公司 | A kind of high-performance WPU superfine fiber chemical leather and its clean preparation method |
| CN107254783A (en) * | 2017-08-16 | 2017-10-17 | 浙江新旭合成革有限公司 | Improve the method and system of processing of synthetic leather peel strength |
| CN108824010A (en) * | 2018-07-18 | 2018-11-16 | 华伦皮塑（苏州）有限公司 | A kind of massage armchair environmentally friendly super fiber leather and preparation method thereof |
| CN111663342A (en) * | 2020-05-25 | 2020-09-15 | 天守(福建)超纤科技股份有限公司 | Production process of water-based solvent-free polyurethane superfine fiber simulation leather |
| CN111732711B (en) * | 2020-07-01 | 2021-11-12 | 合肥安利聚氨酯新材料有限公司 | Preparation method and application of bio-based modified polyurethane resin |
| CN113818256A (en) * | 2021-09-26 | 2021-12-21 | 南通中豪超纤制品有限公司 | Preparation process of blending modified easy-to-clean leather |
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