CN106702758A - Polyurethane ultrafine fiber synthetic leather and preparation method thereof - Google Patents
Polyurethane ultrafine fiber synthetic leather and preparation method thereof Download PDFInfo
- Publication number
- CN106702758A CN106702758A CN201611149963.3A CN201611149963A CN106702758A CN 106702758 A CN106702758 A CN 106702758A CN 201611149963 A CN201611149963 A CN 201611149963A CN 106702758 A CN106702758 A CN 106702758A
- Authority
- CN
- China
- Prior art keywords
- base fabric
- synthetic leather
- aqueous
- fiber synthetic
- polyurethane
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 229920002635 polyurethane Polymers 0.000 title claims abstract description 39
- 239000004814 polyurethane Substances 0.000 title claims abstract description 39
- 239000002649 leather substitute Substances 0.000 title claims abstract description 26
- 229920001410 Microfiber Polymers 0.000 title claims abstract description 18
- 238000002360 preparation method Methods 0.000 title claims abstract description 18
- 239000004744 fabric Substances 0.000 claims abstract description 49
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 claims abstract description 44
- 229920005989 resin Polymers 0.000 claims abstract description 27
- 239000011347 resin Substances 0.000 claims abstract description 27
- 238000000034 method Methods 0.000 claims abstract description 26
- 239000004698 Polyethylene Substances 0.000 claims abstract description 18
- -1 polyethylene Polymers 0.000 claims abstract description 18
- 229920000573 polyethylene Polymers 0.000 claims abstract description 18
- 239000002245 particle Substances 0.000 claims abstract description 15
- 239000004745 nonwoven fabric Substances 0.000 claims abstract description 10
- 239000000839 emulsion Substances 0.000 claims abstract description 9
- 239000000945 filler Substances 0.000 claims abstract description 5
- 239000000835 fiber Substances 0.000 claims description 16
- 238000007598 dipping method Methods 0.000 claims description 13
- 238000001035 drying Methods 0.000 claims description 6
- 239000007788 liquid Substances 0.000 claims description 6
- 239000003921 oil Substances 0.000 claims description 6
- 239000007787 solid Substances 0.000 claims description 5
- 239000002562 thickening agent Substances 0.000 claims description 5
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 4
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 claims description 4
- 229910021502 aluminium hydroxide Inorganic materials 0.000 claims description 4
- 239000000080 wetting agent Substances 0.000 claims description 3
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical group [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims description 2
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 claims description 2
- 239000004721 Polyphenylene oxide Substances 0.000 claims description 2
- 229920000570 polyether Polymers 0.000 claims description 2
- 229940088417 precipitated calcium carbonate Drugs 0.000 claims description 2
- 239000004408 titanium dioxide Substances 0.000 claims description 2
- 241000790917 Dioxys <bee> Species 0.000 claims 1
- 229910003978 SiClx Inorganic materials 0.000 claims 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 9
- 229920005749 polyurethane resin Polymers 0.000 abstract description 7
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 239000002904 solvent Substances 0.000 abstract description 4
- 238000003912 environmental pollution Methods 0.000 abstract description 2
- 238000011282 treatment Methods 0.000 abstract description 2
- 210000003850 cellular structure Anatomy 0.000 abstract 2
- 230000003247 decreasing effect Effects 0.000 abstract 1
- 239000010985 leather Substances 0.000 description 17
- 239000000126 substance Substances 0.000 description 8
- 238000004458 analytical method Methods 0.000 description 4
- 238000002389 environmental scanning electron microscopy Methods 0.000 description 4
- 239000002994 raw material Substances 0.000 description 4
- 238000007619 statistical method Methods 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 3
- 208000035126 Facies Diseases 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
- 238000004043 dyeing Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 238000007664 blowing Methods 0.000 description 2
- 239000008367 deionised water Substances 0.000 description 2
- 229910021641 deionized water Inorganic materials 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 239000000284 extract Substances 0.000 description 2
- 239000006260 foam Substances 0.000 description 2
- 238000005187 foaming Methods 0.000 description 2
- 238000004806 packaging method and process Methods 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 1
- 206010000269 abscess Diseases 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000004088 foaming agent Substances 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 238000002803 maceration Methods 0.000 description 1
- 238000012805 post-processing Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 239000002759 woven fabric Substances 0.000 description 1
Classifications
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
- D06N3/12—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. gelatine proteins
- D06N3/14—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. gelatine proteins with polyurethanes
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
- D06N3/0002—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the substrate
- D06N3/0004—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the substrate using ultra-fine two-component fibres, e.g. island/sea, or ultra-fine one component fibres (< 1 denier)
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
- D06N3/0002—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the substrate
- D06N3/0011—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the substrate using non-woven fabrics
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
- D06N3/0043—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by their foraminous structure; Characteristics of the foamed layer or of cellular layers
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
- D06N3/0056—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the compounding ingredients of the macro-molecular coating
- D06N3/0061—Organic fillers or organic fibrous fillers, e.g. ground leather waste, wood bark, cork powder, vegetable flour; Other organic compounding ingredients; Post-treatment with organic compounds
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
- D06N3/0056—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the compounding ingredients of the macro-molecular coating
- D06N3/0063—Inorganic compounding ingredients, e.g. metals, carbon fibres, Na2CO3, metal layers; Post-treatment with inorganic compounds
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
- D06N3/0056—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the compounding ingredients of the macro-molecular coating
- D06N3/0068—Polymeric granules, particles or powder, e.g. core-shell particles, microcapsules
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
- D06N3/0086—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the application technique
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N2205/00—Condition, form or state of the materials
- D06N2205/02—Dispersion
- D06N2205/023—Emulsion, aqueous dispersion, latex
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N2211/00—Specially adapted uses
- D06N2211/12—Decorative or sun protection articles
- D06N2211/28—Artificial leather
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Wood Science & Technology (AREA)
- Inorganic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Dispersion Chemistry (AREA)
- Synthetic Leather, Interior Materials Or Flexible Sheet Materials (AREA)
- Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
Abstract
The invention discloses a polyurethane ultrafine fiber synthetic leather and a preparation method thereof. The preparation method comprises the following steps: (1) impregnating a sea-island nonwoven fabric in a water-based impregnating resin containing polyethylene particles to obtain an impregnated base fabric; (2) putting the impregnated base fabric into methylbenzene, and decreasing to obtain a primary base fabric; and (3) performing after-treatment on the obtained primary base fabric to obtain the water-based polyurethane ultrafine fiber synthetic leather. According to the invention, the water-based polyurethane emulsion is used instead of a solvent type polyurethane resin, so that environmental pollution is reduced; under the condition of not increasing any working procedure, the size and quantity of cellular structures are adjusted by changing the size and quantity of the polyethylene particles, thereby realizing diversification of the product; and the water-based polyurethane ultrafine fiber synthetic leather prepared by the method has dense cellular structures. Meanwhile, the addition of a filler can further lower the manufacturing cost of the water-based polyurethane ultrafine fiber synthetic leather.
Description
Technical field
The present invention relates to the preparation method of polyurethane ultrafine fiber synthetic leather.
Background technology
Superfine fiber chemical leather is the composite being made up of superfine fibre and polyurethane, with structure simulation, is breathed freely
The features such as property, flexibility, be one of preferable alternative materials of corium, is widely used in the fields such as sofa, automobile, case and bag, shoemaking.
At present, most of domestic superfine fiber chemical leather is all that toluene decrement process is prepared from, and its exemplary steps is as follows：1) by sea
The DMF solution of island non-woven fabrics impregnating polyurethane, and in DMF-H2Solidification forms microporous polyurethane in O solution；2) by hot first
Benzene extracts the marine facies in fiber out；3) by drying, oil, the handling process such as dye and be made superfine fiber synthetic leather base cloth；4) lead to
Cross the technique such as veneer or mill skin and be made resultant Leather.The advantage of the technique is that the polyurethane component in superfine fiber chemical leather possesses
Substantial amounts of microcellular structure, the synthetic leather good hand feeling being made, softness, kishke feel are strong；Shortcoming has largely used molten during being
Agent DMF, certain pollution is caused to environment, and need to consume the substantial amounts of energy when DMF is reclaimed.
Aqueous polyurethane superfine fiber synthetic leather is replaced with water in preparation process by by solvent borne polyurethane maceration extract
Property polyurethane impregnated liquid, the solvent reduced in production process is used.But during fabric of island-in-sea type non-woven fabrics dipping waterborne polyurethane resin
Microcellular structure how is produced to annoying the development of aqueous ultrafine fiber synthetic leather always.Domestic pharmaceutical industry proposed certain methods, such as
Mechanical foaming, salt bath cohesion, acid bath cohesion, chemical blowing etc..But mechanical foaming can filter out part gas by fabric of island-in-sea type non-woven fabrics
Steep and be difficult to control to, salt bath and acid bath cohesion can increase leather fragility and cause pliability not enough, chemical blowing there is presently no
Suitable for the foaming agent of aqueous polyurethane system.
The content of the invention
It is existing to overcome it is an object of the invention to provide a kind of aqueous polyurethane superfine fiber synthetic leather and preparation method thereof
With the presence of the defect of technology.
The method of the present invention, comprises the following steps：
(1) in fabric of island-in-sea type non-woven fabrics impregnated in into the aqueous impregnating resin containing Polyethylene Particles, control liquid holdup is 80
~100%, the resin of fabric of island-in-sea type nonwoven surface is then struck off, 110~130 DEG C of drying obtain dipping base fabric；
(2) decrement is carried out in above-mentioned dipping base fabric being put into toluene, toluene temperature is 85~90 DEG C, the time is 2~3 small
When, the base fabric after decrement is dried at 110~130 DEG C, obtain primary base fabric；
(3) and then by conventional method, the primary base fabric to obtaining is post-processed, you can aqueous poly- described in obtaining
Urethane superfine fiber chemical leather；
The method of described post processing is conventional, and those skilled in the art can be according to document (such as document：Qu Jian
Ripple synthetic leather technology [M] Chemical Industry Press, 2010.) report method carry out the dyeing of primary base fabric, oil, grind
The PROCESS FOR TREATMENTs such as skin, napping obtain aqueous ultrafine fiber polyurethane synthetic leather base fabric, and the base fabric can be used for footwear leather, waist-belt leather, hand
The production of set leather, packaging leather etc., according to the difference of target product, may be selected the aqueous of different 100% modulus and solid weight part
Polyethylene Particles of polyaminoester emulsion, Different Weight part and size etc. are realized.
The described aqueous impregnating resin containing Polyethylene Particles, is made up of the component of following weight portion：
Described Polyethylene Particles, can use commercially available prod, such as：Using Nanjing Tianshi New Material Technologies Co., Ltd.'s trade mark
Product for PEW-0204, PEW-0221 etc., or be 8~16 microns by polyethylene ball mill grinding to D50；
Preparation method is conventional physical mixed, and said components are well mixed, and obtains 5000~8000mPa.S of viscosity@25
DEG C aqueous impregnating resin；
The solid weight part of described aqueous polyurethane emulsion is 40~60%, is preferably 45~55%；
100% modulus of described aqueous polyurethane emulsion is 2.0~10.0Mpa, is preferably 4.0~7.0MPa；
Described filler is one or more in precipitated calcium carbonate, aluminium hydroxide, silica, silicate, titanium dioxide.
Described wetting agent is polyether modified silicon oil, can use commercially available prod such as XIAMETER OFX-5211FLUID etc..
Described thickener is acrylic thickener, can be such as sub- happy along ASE-60 using commercially available prod.
Know-why of the invention is：
The characteristics of being dissolved in hot toluene using Polyethylene Particles, when aqueous impregnating resin is prepared, to be added thereto to polyethylene micro-
Grain, and the Polyethylene Particles in subtracting impregnating resin while sea-island fibre marine facies form superfine fibre are subtracted in toluene, so that
Microporous polyurethane is formed, the foam structure of polyurethane component in conventional superfine fiber chemical leather is simulated, aqueous ultrafine is realized
Fiber synthetic leather it is plentiful, soft, the characteristics of kishke feel is strong.
Compared with prior art, the beneficial effects of the invention are as follows：
Replace solvent type polyurethane resin using aqueous polyurethane emulsion, significantly reduce environmental pollution, using toluene
The process characteristic of decrement, under conditions of operation is not increased, abscess is adjusted by changing the size of Polyethylene Particles with how many
The size of structure with it is how many, so as to realize the variation of product, the decrement recycling together with marine facies of polyethylene out should
Aqueous polyurethane superfine fiber synthetic leather prepared by method possesses more fine and closely woven foam structure.Meanwhile, the present invention is because filler
Introducing can also reduce the manufacturing cost of aqueous polyurethane superfine fiber synthetic leather.
Brief description of the drawings
Fig. 1 is the electromicroscopic photograph of the product of embodiment 1.
Fig. 2 is the electromicroscopic photograph of the product of embodiment 2.
Fig. 3 is the electromicroscopic photograph of the product of embodiment 3.
Fig. 4 is the electromicroscopic photograph of the product of comparative example 1.
Specific embodiment
With reference to specific embodiment, the present invention is expanded on further.It should be understood that these embodiments are merely to illustrate this hair
It is bright, rather than limit protection scope of the present invention.Technical staff makes according to the present invention in actual applications improvement and tune
It is whole, still fall within protection scope of the present invention.Following examples are raw materials used to be commercially available or self-control.
Embodiment 1
The preparation process of the aqueous ultrafine fiber synthetic leather of the present embodiment is as follows：
The preparation of aqueous impregnating resin：
Table 1
Raw material in table 1 is well mixed, prepared viscosity is for about the aqueous impregnating resin of 25 DEG C of 5000mPa.S.
The preparation of primary base fabric：
Fabric of island-in-sea type non-woven fabrics be impregnated in into the aqueous impregnating resin, liquid holdup 100% is controlled, surface resin is scraped with scraper
Fall, then dried in 110 DEG C of baking ovens, dipping base fabric is obtained；To be subtracted with 85 DEG C of toluene during dipping base fabric puts into decrement operation
Amount 3 hours, and the base fabric that decrement is completed is dried on 110~130 DEG C of expanding drying equipments, primary base fabric is obtained.
By primary base fabric according to the method for document report by dyeing, oiling, grind skin, veneer, you can obtain described water
Property polyurethane ultrafine fiber synthetic leather, can be used to manufacture waistband.
PHENOM desk-top ESEMs and its hole statistical analysis system using Fu Na scientific instrument (Shanghai) Co., Ltd.
The micropore size D50 of system analysis polyurethane resin component.The pliability of leather is detected using standard ISO17235-2002.Survey
Test result and feel are as follows：
Polyurethane component micropore size D50：7.9 microns, pliability：2.2, feel：It is hard but flexible, kishke feel are strong.Electricity
Mirror photo is shown in Fig. 1.
Embodiment 2
The preparation of aqueous impregnating resin：
Table 2
Raw material in table 2 is well mixed, prepared viscosity is for about the aqueous impregnating resin of 25 DEG C of 8000mPa.S.
The preparation of primary base fabric：
Fabric of island-in-sea type non-woven fabrics be impregnated in into the aqueous impregnating resin, liquid holdup 80% is controlled, surface resin is scraped with scraper
Fall, then dried in 130 DEG C of baking ovens, dipping base fabric is obtained；To be subtracted with 90 DEG C of toluene during dipping base fabric puts into decrement operation
Amount 2 hours, and the base fabric that decrement is completed is dried on 110~130 DEG C of expanding drying equipments, primary base fabric is obtained；
Primary base fabric is closed according to the method for document report by dyeing, napping, the prepared matte aqueous ultrafine fiber that oils
Finished leather, can be used to make Electron product packaging case etc..
PHENOM desk-top ESEMs and its hole statistical analysis system using Fu Na scientific instrument (Shanghai) Co., Ltd.
The micropore size D50 of system analysis polyurethane resin component.The pliability of leather is detected using standard ISO17235-2002.Survey
Test result and feel are as follows：
Polyurethane component micropore size D50：15.8 microns, pliability：5.7, feel：Soft and full, sense of touch is good, sense of hanging down
It is good.Electromicroscopic photograph is shown in Fig. 2.
Embodiment 3
The preparation process of the aqueous ultrafine fiber synthetic leather of the present embodiment is as follows：
The preparation of aqueous impregnating resin：
Table 3
| Material name | Weight (unit：Kilogram) |
| Aqueous polyurethane emulsion (100% modulus 5.0MPa, solid content 50%) | 100 |
| Polyethylene Particles, D50 is 12 microns | 25 |
| Filler aluminium hydroxide | 15 |
| Deionized water | 100 |
| Wetting agent XIAMETER OFX-5211FLUID | 0.7 |
| Thickener is sub- happy along ASE-60 | 1.0 |
Raw material in table 3 is well mixed, prepared viscosity is for about the aqueous impregnating resin of 25 DEG C of 7000mPa.S.
The preparation of primary base fabric：
Fabric of island-in-sea type non-woven fabrics be impregnated in into aqueous impregnating resin, liquid holdup 90% is controlled, is wiped off surface resin with scraper,
Then dried in 120 DEG C of baking ovens, dipping base fabric is obtained；Will be during dipping base fabric puts into decrement operation, with 90 DEG C of toluene decrements 2
Hour, and the base fabric that decrement is completed is dried on 110~130 DEG C of expanding drying equipments, primary base fabric is obtained.
Primary base fabric is obtained into aqueous ultrafine fiber by dye, oil, grind skin, veneer according to the method for document report to close
Finished leather, can be used for women's shoes etc..
PHENOM desk-top ESEMs and its hole statistical analysis system using Fu Na scientific instrument (Shanghai) Co., Ltd.
The micropore size D50 of system analysis polyurethane resin component.The pliability of leather is detected using standard ISO17235-2002.Survey
Test result and feel are as follows：
Polyurethane component micropore size D50：11.4 microns, pliability：4.1, feel：Soft and full, pliability is good.Electronic Speculum
Photo is shown in Fig. 3.
Comparative example 1
Aqueous impregnating resin in embodiment 3 is added without Polyethylene Particles, and ensures consolidating for polyurethane in impregnating resin
Content is constant, therefore aqueous impregnating resin proportioning is：100% modulus is 5.0MPa, the aqueous polyurethane emulsion that solid content is 50%
100 parts, 125 parts of deionized water, 15 parts of aluminium hydroxide, 0.7 part of XIAMETER OFX-5211FLUID, Asia is happy along ASE-60
1.0 parts.Remaining technique is constant, and aqueous ultrafine fiber synthetic leather is obtained.
PHENOM desk-top ESEMs and its hole statistical analysis system using Fu Na scientific instrument (Shanghai) Co., Ltd.
The micropore size D50 of system analysis polyurethane resin component.The pliability of leather is detected using standard ISO17235-2002.Survey
Test result and feel are as follows：
Polyurethane component micropore size D50：Pore-free, pliability：2.0, feel：Modeling sense is strong, Boardy Feeling, poor flexibility.Electricity
Mirror photo is shown in Fig. 4.
Knowable to various embodiments above and comparative example, aqueous impregnating resin of the invention and aqueous polyurethane woven fabric are fine
The preparation method for tieing up synthetic leather obtains fine and closely woven microcellular structure, realizes the plentiful, soft, true of aqueous ultrafine fiber synthetic leather
The characteristics of skin sense is strong.
Claims (10)
1. the preparation method of polyurethane ultrafine fiber synthetic leather, it is characterised in that comprise the following steps：
(1) in fabric of island-in-sea type non-woven fabrics impregnated in into the aqueous impregnating resin containing Polyethylene Particles, dipping base fabric is obtained；
(2) decrement is carried out in above-mentioned dipping base fabric being put into toluene, primary base fabric is obtained；
(3) the primary base fabric and then to obtaining is post-processed, you can obtain described aqueous polyurethane superfine fiber synthetic leather.
2. method according to claim 1, it is characterised in that in step (1), fabric of island-in-sea type non-woven fabrics impregnated in containing poly-
In the aqueous impregnating resin of polyethylene particles, then control liquid holdup strikes off the tree of fabric of island-in-sea type nonwoven surface 80~100%
Fat, 110~130 DEG C of drying.
3. method according to claim 1, it is characterised in that in step (2), will above-mentioned dipping base fabric put into toluene in enter
Row decrement, toluene temperature is 85~90 DEG C, and the time is 2~3 hours, and the base fabric after decrement is dried at 110~130 DEG C.
4. method according to claim 2, it is characterised in that in step (2), will above-mentioned dipping base fabric put into toluene in enter
Row decrement, toluene temperature is 85~90 DEG C, and the time is 2~3 hours, and the base fabric after decrement is dried at 110~130 DEG C.
5. the method according to any one of Claims 1 to 4, it is characterised in that described contains the aqueous of Polyethylene Particles
Impregnating resin, is made up of the component of following weight portion：
6. method according to claim 5, it is characterised in that described Polyethylene Particles, D50 is 8~16 microns.
7. method according to claim 5, it is characterised in that the viscosity of aqueous impregnating resin is 5000~8000mPa.S@
25℃。
8. method according to claim 5, it is characterised in that the solid weight part of described aqueous polyurethane emulsion is 40
~60%, 100% modulus of aqueous polyurethane emulsion is 2.0~10.0Mpa.
9. method according to claim 5, it is characterised in that described filler is precipitated calcium carbonate, aluminium hydroxide, dioxy
One or more in SiClx, silicate, titanium dioxide, described wetting agent is polyether modified silicon oil, and described thickener is third
Alkene Acrylic associative thickener.
10. the polyurethane ultrafine fiber synthetic leather for being prepared according to any one of claim 1~9 methods described.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109972399A (en) * | 2019-03-08 | 2019-07-05 | 上海华峰超纤材料股份有限公司 | Skin-imitated superfine fiber synthetic leather and its preparation method and application |
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| CN109972399B (en) * | 2019-03-08 | 2021-11-12 | 上海华峰超纤科技股份有限公司 | Leather-imitated superfine fiber synthetic leather and preparation method and application thereof |
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| CN106702758B (en) | 2019-07-02 |
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Address after: 201508, No. 888 Ting Wei Road, Shanghai, Jinshan District Patentee after: Shanghai Huafeng Super Fiber Technology Co.,Ltd. Address before: 201508, No. 888 Ting Wei Road, Shanghai, Jinshan District Patentee before: HUAFON MICROFIBRE (SHANGHAI) Co.,Ltd. |