CN105671989A - Soft sheepskin-imitating polyurethane resin, preparation method thereof, and method of producing sheepskin-imitating artificial leather therewith - Google Patents

Soft sheepskin-imitating polyurethane resin, preparation method thereof, and method of producing sheepskin-imitating artificial leather therewith Download PDF

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Publication number
CN105671989A
CN105671989A CN201510969753.8A CN201510969753A CN105671989A CN 105671989 A CN105671989 A CN 105671989A CN 201510969753 A CN201510969753 A CN 201510969753A CN 105671989 A CN105671989 A CN 105671989A
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polyurethane resin
caprae seu
seu ovis
soft
corii caprae
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CN105671989B (en
Inventor
钱建中
钱洪祥
邹佳娜
邹文革
蒋丽文
郝勇
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Shanghai Huide Technology Co Ltd
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Shanghai Huide Technology Co Ltd
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    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
    • D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
    • D06N3/12—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. gelatine proteins
    • D06N3/14—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. gelatine proteins with polyurethanes
    • D06N3/142—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. gelatine proteins with polyurethanes mixture of polyurethanes with other resins in the same layer
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D175/00—Coating compositions based on polyureas or polyurethanes; Coating compositions based on derivatives of such polymers
    • C09D175/04—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
    • D06N3/0009—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 knitted 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
    • D06N3/0002—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
    • D06N3/0015—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 fibres of specified chemical or physical nature, e.g. natural silk
    • D06N3/0034—Polyamide fibres
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    • 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
    • D06N3/0015—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 fibres of specified chemical or physical nature, e.g. natural silk
    • D06N3/0036—Polyester fibres
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    • 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
    • D06N3/004—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 flocked webs or pile fabrics upon which a resin is applied; Teasing, raising web before resin application
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
    • D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
    • D06N3/0086—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the application technique
    • D06N3/0095—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the application technique by inversion technique; by transfer processes
    • D06N3/0097—Release surface, e.g. separation sheets; Silicone papers
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
    • D06N2209/00—Properties of the materials
    • D06N2209/10—Properties of the materials having mechanical properties
    • D06N2209/103—Resistant to mechanical forces, e.g. shock, impact, puncture, flexion, shear, compression, tear
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
    • D06N2209/00—Properties of the materials
    • D06N2209/10—Properties of the materials having mechanical properties
    • D06N2209/105—Resistant to abrasion, scratch
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
    • D06N2209/00—Properties of the materials
    • D06N2209/16—Properties of the materials having other properties
    • D06N2209/1692—Weather resistance
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    • 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
    • D06N2211/10—Clothing
    • 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
    • D06N2211/10—Clothing
    • D06N2211/103—Gloves
    • 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
    • D06N2211/10—Clothing
    • D06N2211/106—Footwear

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Dispersion Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Materials Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Organic Chemistry (AREA)
  • Synthetic Leather, Interior Materials Or Flexible Sheet Materials (AREA)
  • Treatment And Processing Of Natural Fur Or Leather (AREA)

Abstract

The invention relates to soft sheepskin-imitating polyurethane resin which includes the following components: wet-method polyurethane resin, N,N-dimethylformamide, paper pulp powder, a hand feeling agent, a permeation agent, an anti-crimping agent and an oily color material. The invention also relates to a method of producing sheepskin-imitating artificial leather with the soft sheepskin-imitating polyurethane resin, wherein the method includes the following steps: 1) impregnating a base cloth in a soft sheepskin-imitating polyurethane resin mixture liquid; 2) regulating sizing quantity through extrusion, and performing solidification, water washing, drying and polishing to prepare wet-method base; and 3) performing veneering and vacuum grain suction to the wet-method base to prepare the sheepskin-imitating artificial leather. The sheepskin-imitating artificial leather has a soft and light feel, has fine and elastic hand feeling, is high in tear strength and good in weather and wear resistance, has a soft and natural surface color, has full grains and has strong stereoscopic sense.

Description

Soft imitative Corii Caprae seu Ovis polyurethane resin, preparation method and the method with the imitative Corii Caprae seu Ovis synthetic leather of this soft imitative Corii Caprae seu Ovis polyurethane resin preparation
Technical field
The present invention relates to a kind of soft imitative Corii Caprae seu Ovis polyurethane resin, preparation method and the method with the imitative Corii Caprae seu Ovis synthetic leather of this soft imitative Corii Caprae seu Ovis polyurethane resin preparation.
Background technology
Along with the application of domestic and international high-tech development with advanced industrial equipment, China's synthetic leather industry technology level, product specification has had qualitative leap. No matter current Synthetic Leather is obtained for development at full speed in product quality, kind, or yield, and its performance becomes closer to natural leather, and the performance of some aspect is even more than natural leather. Such as chemicals-resistant corrosivity, resistance to ag(e)ing, rub resistance intensity, tear resistance, antimildew and antibacterial, the performance such as sucting wet air permeability can be better than corium, reaches performance and outward appearance and the very indistinguishable degree of natural leather.
Soft imitative Corii Caprae seu Ovis Synthetic Leather is the product catering to this developing direction of real leather intimating synthetic leather having the call in the market and developing. But current soft imitative Corii Caprae seu Ovis Synthetic Leather also exists the not frivolous softness of synthetic leather, the fineless and smooth high resilience of feel, and tearing strength is not high, and weather-proof wearability is bad, and the not soft nature of surface color, lines is not full, and third dimension is not strong.
Summary of the invention
One of problem to be solved by this invention is in that the deficiency existing for existing technology provides a kind of soft imitative Corii Caprae seu Ovis polyurethane resin. Adopting the frivolous softness of synthetic leather that this soft imitative Corii Caprae seu Ovis polyurethane resin obtains, feel exquisiteness high resilience, tearing strength is high, and weather-proof wearability is good, and the soft nature of surface color, lines is full, and third dimension is strong.
The two of the technical problem to be solved are in that the preparation method providing above-mentioned soft imitative Corii Caprae seu Ovis polyurethane resin.
The three of the technical problem to be solved are in that to provide a kind of method utilizing the imitative Corii Caprae seu Ovis synthetic leather of soft imitative Corii Caprae seu Ovis polyurethane resin preparation.
The technical problem to be solved can be achieved through the following technical solutions:
As a first aspect of the present invention, a kind of soft imitative Corii Caprae seu Ovis polyurethane resin, it is characterised in that be made up of the raw material of following mass percent:
The solid content of described wet polyurethane resin is 29%～31%, and 100% modulus of this wet polyurethane resin is 5～15kg/m2;
Described hand feeling agent is polypropylene oxide triol;
Described penetrating agent is dioctyl maleate sodium sulfonate;
Described Edge curl preventing agent is modified polyorganosiloxane.
In a preferred embodiment of the invention, described modified polyorganosiloxane is the SF-8427 of DOW CORNING.
In a preferred embodiment of the invention, described wet polyurethane resin is the HDW-3005EB of Shanghai Huide Chemical Co., Ltd..
Preparation method as a kind of soft imitative Corii Caprae seu Ovis polyurethane resin of second aspect present invention, it is characterised in that comprise the steps of
1) by DMF and pulp powder mix and blend 10-15 minute, penetrating agent, Edge curl preventing agent, hand feeling agent, mix and blend 10-15 minute are added;
2) in step 1) mixture that obtains adds wet polyurethane resin and oiliness colorant, it is sufficiently stirred for 30-40 minute, deaeration 30 minutes, speed of agitator is 80 revs/min, obtains soft imitative Corii Caprae seu Ovis polyurethane resin.
As third aspect present invention, a kind of method utilizing the imitative Corii Caprae seu Ovis synthetic leather of above-mentioned soft imitative Corii Caprae seu Ovis polyurethane resin preparation, it is characterised in that comprise the steps of
1) prepared by wet method bass:
Soft imitative Corii Caprae seu Ovis polyurethane resin is added feed chute, make base fabric undercoat face up and be completely submerged in soft imitative Corii Caprae seu Ovis polyurethane resin, speed is 10～15m/min, it is 1.20～1.40mm by gap, pressure is the compression roller of 0.3～0.4Mpa, regulate starching amount, extrude unnecessary soft imitative Corii Caprae seu Ovis polyurethane resin, immersing concentration again is 18～22%, temperature is the N of 25～30 DEG C, dinethylformamide aqueous solution solidifies, then pass through the compression roller of pressure 0.4～0.5Mpa, wash 10 times with the clear water of 40～60 DEG C, remove the N of residual, dinethylformamide, baking oven expanding shaping and drying finally by baking temperature 125～135 DEG C, obtain wet method bass,
2) sanding of wet method bass processes:
By step 1) face of becoming mildewed of the wet method bass of gained carries out sanding process at driven type polisher, first pass is with 120 order sand paper, sand paper speed of gyration controls at 600～800 revs/min, the second time sand paper with 240 orders, sand paper speed of gyration controls at 800～1000 revs/min, grinding machine speed control system is at 5～8m/min, thickness abrasion 0.03～0.05mm;
3) veneer of wet method bass:
With 140 ± 10g/m in the release paper membrane of plain weave2Coating weight even spread dry method surface layer polyurethane mixed liquor, speed is 15 ± 2m/mim, through 6 meters of baking ovens of 90 ± 5 DEG C, dries 40 ± 5 seconds, the direct pressure by the wet method bass after sanding with 0.25 ± 0.05Mpa, undercoat face is fitted in above-mentioned release paper coating, and laminating gap is 0.25 ± 0.05mm, then through the oven for drying that baking temperature is 130 ± 10 DEG C, after the cooling of cooled roller, paper, leather are peeled off, rolls respectively, obtain semi-finished product leather;
4) semi-finished product leather vacuum pattern absorbing:
By step 3) peel off obtain semi-finished product leather put in the baking oven that oven temperature is 195 ± 3 DEG C preheat 25 ± 5 seconds, place into vacuum tattoo machine and inhale stricture of vagina, vacuum machine negative pressure 0.15 ± 0.05Mpa, inhale 8 ± 3 seconds stricture of vagina time, surface must be arrived and have lines, the imitative Corii Caprae seu Ovis synthetic leather of back side sanding.
In the preferred embodiment of the present invention, described base fabric is that blending tWeft Knitted Fabrics washed by the two-sided fluffing brocade of 40D.
In a more preferred embodiment of the present invention, described dry method surface layer polyurethane mixed liquor, it is characterised in that be made up of the raw material of following mass percent:
In a preferred embodiment of the invention, described dry method polyurethane resin is the HDS-1050HB of Shanghai Huide Chemical Co., Ltd..
In a preferred embodiment of the invention, described modified polyoxy silane is the SF-8427 of DOW CORNING.
Beneficial effects of the present invention:
The imitative Corii Caprae seu Ovis synthetic leather of the present invention is primarily directed to the synthetic leather product of a kind of similar Corii Caprae seu Ovis of the exploitation such as middle and high end clothing leather, footwear leather. For the various technological difficulties making real leather intimating synthetic leather, the present invention mainly realizes physical property and the feel feature of similar Corii Caprae seu Ovis from two aspects. One is the formula aspect from resin, select dioctyl maleate sodium sulfonate as penetrating agent, the use of penetrating agent is the moistening improving base fabric, surface tension can be significantly reduced, resin is made to be easier to immerse in base fabric, the infiltration capacity that so under the premise that work slurry viscosity and speed technique are fixed, can make resin infiltration base fabric is more, improves the voluptuousness of wet method bass. And the increase along with resin infiltration capacity, it is possible to increase the intensity of fiber intersection points, improves the tearing strength of bass.
The present invention has selected modified polyorganosiloxane as Edge curl preventing agent, is to use tWeft Knitted Fabrics to replace tradition tWarp Knitted Fabrics to make base fabric. TWeft Knitted Fabrics weave is different with warp knitting cloth, it has more elasticity, the resultant Leather made is closer to the elasticity of corium and feel, but in leather-making technology, if selecting weft-knitted fabric often to cause bass crimping, shrink, the problems such as door amplitude variation is narrow, the bass prepared more can be made to become deadlock owing to shrinking feel, and the silicone based Edge curl preventing agent that the present invention selects can effectively solve crimping and the contraction problem of weft-knitted fabric, it is ensured that the feel of finished product bass. The present invention selects the filling (pulp powder) of addition 2～6% in formula, mainly for increasing the voluptuousness of finished product bass, the addition of inserts so that the abscess of finished product is closer to the alveolate texture of corium, and feel is also just closer to the voluptuousness of corium. If but fill addition too greatly, resin solid content in base fabric reduces, it is easy to causing finished product base intensity difference, feel is emptying, and voluptuousness is deteriorated.
Two is from leather-making technology aspect, the present invention selects the supine extrusion process of base fabric undercoat, ensure that base fabric is when entering coagulating basin solidification, undercoat faces down, become mildewed and face up, and in the leather-making technology of the present invention, emphasize that coagulating basin temperature will between 25～30 DEG C, when these special processes can make face of becoming mildewed solidify, solidification is slow, the infiltration rate that the face resin that becomes mildewed penetrates into base fabric is relatively low, this just can reduce the sanding difficulty in the face of becoming mildewed, and makes the face of becoming mildewed after polishing closer to the nap effect at the Corii Caprae seu Ovis back side.
At aspect of performance, the soft imitative Corii Caprae seu Ovis synthetic leather of the present invention is compared with Corii Caprae seu Ovis, and its feel is close to Corii Caprae seu Ovis, and tearing strength is high, and good weatherability, wearability is good. In processability, Corii Caprae seu Ovis not only to be limited by the restriction of natural resources, and processing technology very complicated, finished product skin is bigger in the loss adding man-hour, the imitative Corii Caprae seu Ovis Synthetic Leather of ultra-soft matter is not then by raw-material restriction, product homogeneity is better, fabric width consistent, and little being prone to of loss reduces processing, can partly replace Corii Caprae seu Ovis to make the aspects such as medium-to-high grade clothing leather, packaging material, glove, footwear leather.
Accompanying drawing explanation
Fig. 1 is the surface effect schematic diagram after the atmospheric exposure test of the imitative Corii Caprae seu Ovis synthetic leather finished product 1 of the embodiment of the present invention 1.
Fig. 2 is the surface effect schematic diagram after the atmospheric exposure test of the imitative Corii Caprae seu Ovis synthetic leather finished product 2 of the embodiment of the present invention 2.
Fig. 3 is the surface effect schematic diagram after the atmospheric exposure test of the imitative Corii Caprae seu Ovis synthetic leather finished product 3 of the embodiment of the present invention 3.
Fig. 4 is the surface effect schematic diagram after the atmospheric exposure test of the imitative Corii Caprae seu Ovis synthetic leather finished product 4 of the embodiment of the present invention 4.
Fig. 5 is the surface effect schematic diagram after the atmospheric exposure test of the imitative Corii Caprae seu Ovis synthetic leather finished product 5 of the embodiment of the present invention 5.
Fig. 6 is the surface effect schematic diagram after the atmospheric exposure test of the imitative Corii Caprae seu Ovis synthetic leather finished product 1 of comparative example.
Detailed description of the invention
Below in conjunction with specific embodiment, the present invention is described in more detail.
Unless expressly stated otherwise, wet polyurethane resin selects the HDW-3005EB of Shanghai Huide Chemical Co., Ltd. to example below; Modified polyorganosiloxane selects the SF-8427 of DOW CORNING; All the other are commercially available.
Embodiment 1
1. soft imitative Corii Caprae seu Ovis polyurethane resin formula
Note: the solid content of the wet polyurethane resin described in formula is 29%～31%, 100% modulus of this polyurethane resin is 5～15kg/m2。
2. soft imitative Corii Caprae seu Ovis polyurethane resin preparation method
1) by DMF 50kg and pulp powder 2.3kg mix and blend 10 minutes, polypropylene oxide triol 1.0kg, dioctyl maleate sodium sulfonate 0.5kg, modified polyorganosiloxane 0.3kg, mix and blend 15 minutes are added.
2) in step 1) mixture that obtains adds wet polyurethane resin 44kg and oiliness colorant 0.9kg, it is sufficiently stirred for 40 minutes, deaeration 30 minutes, speed of agitator is 80 revs/min, obtains soft imitative Corii Caprae seu Ovis polyurethane resin.
4., by the method that above-mentioned soft imitative Corii Caprae seu Ovis polyurethane resin is the imitative Corii Caprae seu Ovis synthetic leather that primary raw material is made, comprise the steps of
1) prepared by wet method bass:
Soft imitative Corii Caprae seu Ovis polyurethane resin is added feed chute, two-sided for 40D fluffing brocade is washed blending tWeft Knitted Fabrics undercoat face up and be completely submerged in mixed liquor, speed is 10m/min, it is 1.20mm by gap, pressure is the compression roller of 0.4Mpa, extrude unnecessary soft imitative Corii Caprae seu Ovis polyurethane resin, immersing concentration again is 20%, temperature is the N of 25 DEG C, dinethylformamide aqueous solution solidifies 15 minutes, then pass through the compression roller of pressure 0.4Mpa, washing 10 times is extruded with the clear water of 60 DEG C, remove the N of residual, dinethylformamide, baking oven expanding shaping and drying finally by baking temperature 125 DEG C, obtain wet method bass,
2) sanding of wet method bass processes:
By step 1) face of becoming mildewed of the wet method bass of gained carries out sanding process at driven type polisher, first pass is with 150 order sand paper, sand paper speed of gyration controls at 600 revs/min, the second time sand paper with 240 orders, sand paper speed of gyration controls at 900 revs/min, grinding machine speed control system is at 6m/min, thickness abrasion 0.03mm.
3) veneer of wet method bass:
Dry method surface layer polyurethane mixed liquor raw material forms:
By dry method polyurethane resin 52kg, DMF 21kg butanone 21kg, modified polyorganosiloxane 0.5kg, oiliness colorant 5.5kg mix and blend 20 minutes, obtain dry method surface layer polyurethane mixed liquor.
With 143g/m in plain weave release paper2Coating weight even spread dry method surface layer polyurethane mixed liquor, speed is 15m/mim, through 6 meters of baking ovens of 91 DEG C, dries 42 seconds, the direct pressure by the wet method bass after sanding with 0.25Mpa, undercoat face is fitted in above-mentioned release paper coating, and laminating gap is 0.25mm, then through the oven for drying that baking temperature is 130 DEG C, after the cooling of cooled roller, paper, leather are peeled off, rolls respectively, obtain semi-finished product leather.
4) semi-finished product leather vacuum pattern absorbing:
By step 3) peel off obtain semi-finished product leather put in the baking oven that oven temperature is 193 DEG C preheat 28 seconds, place into vacuum tattoo machine and inhale stricture of vagina, vacuum machine negative pressure 0.20Mpa, inhale 10 seconds stricture of vagina time, surface must be arrived and have lines, the imitative Corii Caprae seu Ovis synthetic leather finished product 1 of back side sanding.
Embodiment 2
1. soft imitative Corii Caprae seu Ovis polyurethane resin formula
Note: the solid content of the wet polyurethane resin described in formula is 29%～31%, 100% modulus of this polyurethane resin is 5～15kg/m2。
2. preparation method
1) by DMF 52kg and pulp powder 4.0kg mix and blend 11 minutes, polypropylene oxide triol 0.8kg, dioctyl maleate sodium sulfonate 0.2kg, modified polyorganosiloxane 0.2kg, mix and blend 15 minutes are added;
2) in step 1) mixture that obtains adds wet polyurethane resin 41kg and oiliness colorant 1.8kg, it is sufficiently stirred for 35 minutes, deaeration 30 minutes, speed of agitator is 80 revs/min, obtains soft imitative Corii Caprae seu Ovis polyurethane resin.
3., by the method that above-mentioned soft imitative Corii Caprae seu Ovis polyurethane resin is the imitative Corii Caprae seu Ovis synthetic leather that primary raw material is made, comprise the steps of
1) prepared by wet method bass:
Soft imitative Corii Caprae seu Ovis polyurethane resin is added feed chute, two-sided for 40D fluffing brocade is washed blending tWeft Knitted Fabrics undercoat face up and be completely submerged in mixed liquor, speed is 12m/min, it is 1.30mm by gap, pressure is the compression roller of 0.4Mpa, extrude unnecessary soft imitative Corii Caprae seu Ovis polyurethane resin, immersing concentration again is 23%, temperature is the N of 30 DEG C, dinethylformamide aqueous solution solidifies 13 minutes, then pass through the compression roller of pressure 0.35Mpa, washing 10 times is extruded with the clear water of 50 DEG C, remove the N of residual, dinethylformamide, baking oven expanding shaping and drying finally by baking temperature 130 DEG C, obtain wet method bass.
2) sanding of wet method bass processes:
By step 1) face of becoming mildewed of the wet method bass of gained carries out sanding process at driven type polisher, first pass is with 150 order sand paper, sand paper speed of gyration controls at 700 revs/min, the second time sand paper with 240 orders, sand paper speed of gyration controls at 800 revs/min, grinding machine speed control system is at 7m/min, thickness abrasion 0.04mm.
3) veneer of wet method bass:
Dry method surface layer polyurethane mixed liquor raw material forms:
By dry method polyurethane resin 54kg, DMF 25kg butanone 16kg, modified polyorganosiloxane 0.5kg, oiliness colorant 4.5kg mix and blend 20 minutes, obtain dry method surface layer polyurethane mixed liquor.
With 145g/m in plain weave release paper2Coating weight even spread dry method surface layer polyurethane mixed liquor, speed is 16m/mim, through 6 meters of baking ovens of 97 DEG C, dries 45 seconds, the direct pressure by the wet method bass after sanding with 0.25Mpa, undercoat face is fitted in above-mentioned release paper coating, and laminating gap is 0.30mm, then through the oven for drying that baking temperature is 135 DEG C, after the cooling of cooled roller, paper, leather are peeled off, rolls respectively, obtain semi-finished product leather.
4) semi-finished product leather vacuum pattern absorbing:
By step 3) peel off obtain semi-finished product leather put in the baking oven that oven temperature is 196 DEG C preheat 27 seconds, place into vacuum tattoo machine and inhale stricture of vagina, vacuum machine negative pressure 0.20Mpa, inhale 10 seconds stricture of vagina time, surface must be arrived and have lines, the imitative Corii Caprae seu Ovis synthetic leather finished product 2 of back side sanding.
Embodiment 3
1. soft imitative Corii Caprae seu Ovis polyurethane resin formula
Note: the solid content of the wet polyurethane resin described in formula is 29%～31%, 100% modulus of this polyurethane resin is 5～15kg/m2。
2. preparation method
1) by DMF 54kg and pulp powder 4.6kg mix and blend 12 minutes, polypropylene oxide triol 0.85kg, dioctyl maleate sodium sulfonate 0.8kg, modified polyorganosiloxane 0.15kg, mix and blend 10 minutes are added;
2) in step 1) mixture that obtains adds wet polyurethane resin 38kg and oiliness colorant 1.6kg, it is sufficiently stirred for 30 minutes, deaeration 30 minutes, speed of agitator is 80 revs/min, obtains soft imitative Corii Caprae seu Ovis polyurethane resin.
3., by the method that above-mentioned soft imitative Corii Caprae seu Ovis polyurethane resin is the imitative Corii Caprae seu Ovis synthetic leather that primary raw material is made, comprise the steps of
1) prepared by wet method bass:
Soft imitative Corii Caprae seu Ovis polyurethane resin mixed liquor is added feed chute, two-sided for 40D fluffing brocade is washed blending tWeft Knitted Fabrics undercoat face up and be completely submerged in mixed liquor, speed is 10m/min, it is 1.40mm by gap, pressure is the compression roller of 0.4Mpa, extrude unnecessary mixed liquor, immersing concentration again is 19%, temperature is the N of 26 DEG C, dinethylformamide aqueous solution solidifies 15 minutes, then pass through the compression roller of pressure 0.45Mpa, washing 10 times is extruded with the clear water of 50 DEG C, remove the N of residual, dinethylformamide, baking oven expanding shaping and drying finally by baking temperature 130 DEG C, obtain wet method bass.
2) sanding of wet method bass processes:
By step 1) face of becoming mildewed of the wet method bass of gained carries out sanding process at driven type polisher, first pass is with 150 order sand paper, sand paper speed of gyration controls at 800 revs/min, the second time sand paper with 240 orders, sand paper speed of gyration controls at 1000 revs/min, grinding machine speed control system is at 8m/min, thickness abrasion 0.05mm.
3) veneer of wet method bass:
Dry method surface layer polyurethane mixed liquor raw material forms:
By dry method polyurethane resin 50kg, DMF 25kg butanone 20kg, modified polyorganosiloxane 0.3kg, oiliness colorant 4.7kg mix and blend 20 minutes, obtain dry method surface layer polyurethane mixed liquor.
With 140g/m in plain weave release paper2Coating weight even spread dry method surface layer polyurethane mixed liquor, speed is 17m/mim, through 6 meters of baking ovens of 95 DEG C, dries 40 seconds, the direct pressure by the wet method bass after sanding with 0.25Mpa, undercoat face is fitted in above-mentioned release paper coating, and laminating gap is 0.25mm, then through the oven for drying that baking temperature is 125 DEG C, after the cooling of cooled roller, paper, leather are peeled off, rolls respectively, obtain semi-finished product leather.
4) semi-finished product leather vacuum pattern absorbing:
By step 3) peel off obtain semi-finished product leather put in the baking oven that oven temperature is 195 DEG C preheat 30 seconds, place into vacuum tattoo machine and inhale stricture of vagina, vacuum machine negative pressure 0.15Mpa, inhale 8 seconds stricture of vagina time, surface must be arrived and have lines, the imitative Corii Caprae seu Ovis synthetic leather finished product 3 of back side sanding.
Embodiment 4
1. soft imitative Corii Caprae seu Ovis polyurethane resin formula
Note: the solid content of the wet polyurethane resin described in formula is 29%～31%, 100% modulus of this polyurethane resin is 5～15kg/m2。
2. preparation method
1) by DMF 55kg and pulp powder 5.5kg mix and blend 15 minutes, polypropylene oxide triol 0.4kg, dioctyl maleate sodium sulfonate 0.5kg, modified polyorganosiloxane 0.2kg, mix and blend 10 minutes are added;
2) in step 1) mixture that obtains adds wet polyurethane resin 37kg and oiliness colorant 1.4kg, it is sufficiently stirred for 40 minutes, deaeration 30 minutes, speed of agitator is 80 revs/min, obtains soft imitative Corii Caprae seu Ovis polyurethane resin.
3., by the method that above-mentioned soft imitative Corii Caprae seu Ovis polyurethane resin is the imitative Corii Caprae seu Ovis synthetic leather that primary raw material is made, comprise the steps of
1) prepared by wet method bass:
Soft imitative Corii Caprae seu Ovis polyurethane resin mixed liquor is added feed chute, two-sided for 40D fluffing brocade is washed blending tWeft Knitted Fabrics undercoat face up and be completely submerged in mixed liquor, speed is 12m/min, it is 1.30mm by gap, pressure is the compression roller of 0.4Mpa, extrude unnecessary mixed liquor, immersing concentration again is 18%, temperature is the N of 29 DEG C, dinethylformamide aqueous solution solidifies 13 minutes, then pass through the compression roller of pressure 0.4Mpa, washing 10 times is extruded with the clear water of 45 DEG C, remove the N of residual, dinethylformamide, baking oven expanding shaping and drying finally by baking temperature 135 DEG C, obtain wet method bass.
2) sanding of wet method bass processes:
By step 1) face of becoming mildewed of the wet method bass of gained carries out sanding process at driven type polisher, first pass is with 150 order sand paper, sand paper speed of gyration controls at 600 revs/min, the second time sand paper with 240 orders, sand paper speed of gyration controls at 800 revs/min, grinding machine speed control system is at 7m/min, thickness abrasion 0.04mm.
3) veneer of wet method bass:
Dry method surface layer polyurethane mixed liquor raw material forms:
By dry method polyurethane resin 48kg, DMF 20kg butanone 24kg, modified polyorganosiloxane 0.5kg, oiliness colorant 7.5kg mix and blend 20 minutes, obtain dry method surface layer polyurethane mixed liquor.
With 140g/m in plain weave release paper2Coating weight even spread dry method surface layer polyurethane mixed liquor, speed is 17m/mim, through 6 meters of baking ovens of 90 DEG C, dries 38 seconds, the direct pressure by the wet method bass after sanding with 0.25Mpa, undercoat face is fitted in above-mentioned release paper coating, and laminating gap is 0.25mm, then through the oven for drying that baking temperature is 128 DEG C, after the cooling of cooled roller, paper, leather are peeled off, rolls respectively, obtain semi-finished product leather.
4) semi-finished product leather vacuum pattern absorbing:
By step 3) peel off obtain semi-finished product leather put in the baking oven that oven temperature is 192 DEG C preheat 25 seconds, place into vacuum tattoo machine and inhale stricture of vagina, vacuum machine negative pressure 0.13Mpa, inhale 10 seconds stricture of vagina time, surface must be arrived and have lines, the imitative Corii Caprae seu Ovis synthetic leather finished product 4 of back side sanding.
Embodiment 5
1. soft imitative Corii Caprae seu Ovis polyurethane resin formula
Note: the solid content of the wet polyurethane resin described in formula is 29%～31%, 100% modulus of this polyurethane resin is 5～15kg/m2。
2. preparation method
1) by DMF 51kg and pulp powder 3.5kg mix and blend 15 minutes, polypropylene oxide triol 1.0kg, dioctyl maleate sodium sulfonate 0.3kg, modified polyorganosiloxane 0.35kg, mix and blend 12 minutes are added;
2) in step 1) mixture that obtains adds wet polyurethane resin 43kg and oiliness colorant 0.85kg, it is sufficiently stirred for 340 minutes, deaeration 30 minutes, speed of agitator is 80 revs/min, obtains soft imitative Corii Caprae seu Ovis polyurethane resin.
3., by the method that above-mentioned soft imitative Corii Caprae seu Ovis polyurethane resin is the imitative Corii Caprae seu Ovis synthetic leather that primary raw material is made, comprise the steps of
1) prepared by wet method bass:
Soft imitative Corii Caprae seu Ovis polyurethane resin mixed liquor is added feed chute, two-sided for 40D fluffing brocade is washed blending tWeft Knitted Fabrics undercoat face up and be completely submerged in mixed liquor, speed is 15m/min, it is 1.40mm by gap, pressure is the compression roller of 0.35Mpa, extrude unnecessary mixed liquor, immersing concentration again is 21%, temperature is the N of 26 DEG C, dinethylformamide aqueous solution solidifies 14 minutes, then pass through the compression roller of pressure 0.4Mpa, washing 10 times is extruded with the clear water of 50 DEG C, remove the N of residual, dinethylformamide, baking oven expanding shaping and drying finally by baking temperature 130 DEG C, obtain wet method bass.
2) sanding of wet method bass processes:
By step 1) face of becoming mildewed of the wet method bass of gained carries out sanding process at driven type polisher, first pass is with 150 order sand paper, sand paper speed of gyration controls at 800 revs/min, the second time sand paper with 240 orders, sand paper speed of gyration controls at 100 revs/min, grinding machine speed control system is at 8m/min, thickness abrasion 0.05mm.
3) veneer of wet method bass:
Dry method surface layer polyurethane mixed liquor raw material forms:
By dry method polyurethane resin 46kg, DMF 23kg butanone 23kg, modified polyorganosiloxane 0.6kg, oiliness colorant 7.4kg mix and blend 20 minutes, obtain dry method surface layer polyurethane mixed liquor.
With 150g/m in plain weave release paper2Coating weight even spread dry method surface layer polyurethane mixed liquor, speed is 17m/mim, through 6 meters of baking ovens of 85 DEG C, dries 38 seconds, the direct pressure by the wet method bass after sanding with 0.30Mpa, undercoat face is fitted in above-mentioned release paper coating, and laminating gap is 0.30mm, then through the oven for drying that baking temperature is 140 DEG C, after the cooling of cooled roller, paper, leather are peeled off, rolls respectively, obtain semi-finished product leather.
4) semi-finished product leather vacuum pattern absorbing:
By step 3) peel off obtain semi-finished product leather put in the baking oven that oven temperature is 195 DEG C preheat 25 seconds, place into vacuum tattoo machine and inhale stricture of vagina, vacuum machine negative pressure 0.15Mpa, inhale 10 seconds stricture of vagina time, surface must be arrived and have lines, the imitative Corii Caprae seu Ovis synthetic leather finished product 5 of back side sanding.
Embodiment of the present invention 1-5 is prepared the soft imitative Corii Caprae seu Ovis synthetic leather 1-5 of gained by inventor and the commercially available sheep of comparative example has carried out atmospheric exposure test, tests the difference of its condition lower surface situation of change in identical temperature and humidity and peel strength.
1. experimental procedure:
(1) by the commercially available sheep sample of soft imitative Corii Caprae seu Ovis synthetic leather 1-5 and comparative example, being cut into the batten of 20 × 30, batten numbering is followed successively by No. 1-6.
(2) the test batten of the numbering 1-6 that prepared by step (1) gained is vertically hung in climatic chamber, tests the peel strength after two weeks and tearing strength, comparison surface situation of change.
2. experimental result:
Soft imitative Corii Caprae seu Ovis synthetic leather and the surface condition of comparative example sheep sample that the present invention prepares compare with peel strength comparative experiments result in Table 1～3.
Weatherability test uses GT-7005-T desktop constant temperature and moisture test, measures temperature 75 ± 2 DEG C, 2 weeks humidity 95 ± 2% testing times.
Leather sample surface condition compares, and uses the VHX-2000E digit microscope camera lens of 20 times to observe leather sample surface situation of change and evaluates.
Peel strength test, tearing strength is tested, and uses the data of peel strength before and after AL-700S SERVO CONTROL computer system tensile testing machine test leather sample constant temperature and humidity, evaluates according to test data.
Table 1
Leather sample number Embodiment and comparative example Constant temperature and humidity front surface situation Constant temperature and humidity rear surface situation
1 Soft imitative Corii Caprae seu Ovis synthetic leather 1 Surfacing, lines is clear Surfacing, lines is clear
2 Soft imitative Corii Caprae seu Ovis synthetic leather 2 Surfacing, lines is clear Surfacing, lines is clear
3 Soft imitative Corii Caprae seu Ovis synthetic leather 3 Surfacing, lines is clear Surfacing, lines is clear
4 Soft imitative Corii Caprae seu Ovis synthetic leather 4 Surfacing, lines is clear Surfacing, lines is clear
5 Soft imitative Corii Caprae seu Ovis synthetic leather 5 Surfacing, lines is clear Surfacing, lines is clear
6 Commercially available sheep Surfacing, lines is clear There is broken skin on surface, and lines shoals
Table 2
Table 3
Shown in table 1 and Fig. 1 to Fig. 6, can be seen that all bars of leather of soft imitative Corii Caprae seu Ovis synthetic leather 1-5 are compared with the comparative example all bars of commercially available sheep, in constant temperature and humidity rear surface, situation is substantially good than the leather sample of comparative example 6, before and after constant temperature and humidity the conservation rate of peel strength also than comparative example 6 leather sample substantially good, tearing strength before and after constant temperature and humidity is also superior to comparative example, illustrates that the weather resistance of the soft imitative Corii Caprae seu Ovis synthetic leather of the present invention is better than commercially available Corii Caprae seu Ovis.
Embodiment of the present invention 1-5 is prepared the imitative Corii Caprae seu Ovis synthetic leather 1-5 of gained by inventor and the commercially available sheep of comparative example uses ASTMD3884 cloth abrasion method of testing to carry out abrasion test, tests the performance of its surface abrasion resistance scratch resistance.
1. experimental procedure:
(1) by soft imitative Corii Caprae seu Ovis synthetic leather 1-5 and the commercially available sheep sample of comparative example, being cut into external diameter 108mm, internal diameter 8mm print, print numbering is followed successively by No. 1-6.
(2) before test print is statically placed in temperature 23 ± 2 DEG C, in the state of relative humidity 60 ± 5% 24 hours.
(3) test sample is attached on same size paster, under identical conditions, carries out wear-resisting test.
(4) test sample is faced up it is placed on testing machine, with the fixing test sample of retainer ring, emery wheel is placed on test sample and carries out abrasion performance test, during test, print contacts with each other with CS-10 standard emery wheel when gravity 1000g/ turns, and make the turning effort that sample passes through a pair friction pulley produce " X " type friction, make test specimens receive multidirectional uniform wear. Observe test sample surface abrasion situation, record test Rubbing number.
2. experimental result:
Soft imitative Corii Caprae seu Ovis synthetic leather that the present invention prepares and the wear-resisting experimental result of commercially available sheep sample are in Table 4.
National Standard of the People's Republic of China GB/T21196.2-2007 " the mensuration part 2 of textile Martindale's method fabric abrasion resistance: the mensuration that sample is damaged " is used to evaluate after wear-resisting test. Specimen surface after having tested should rub the hole caused, and its diameter is at least 0.5mm, or face coat is partially destroyed to exposing base fabric or having partial coating to come off to be sample breakage as frictional endpoint.
Table 4
The print of soft imitative Corii Caprae seu Ovis synthetic leather 1-5 is compared with the print of comparative example as can be seen from Table 4, surface abrasion mild degree, and the surface abrasion ratio of comparative example is more serious. Illustrate that the excellent anti-wear performance of the soft imitative Corii Caprae seu Ovis synthetic leather of the present invention can compare favourably with corium, can be widely applied to the field such as clothing, case and bag.

Claims (9)

1. a soft imitative Corii Caprae seu Ovis polyurethane resin, it is characterised in that be made up of the raw material of following mass percent:
The solid content of described wet polyurethane resin is 29%～31%, and 100% modulus of this wet polyurethane resin is 5～15kg/m2;
Described hand feeling agent is polypropylene oxide triol;
Described penetrating agent is dioctyl maleate sodium sulfonate;
Described Edge curl preventing agent is modified polyorganosiloxane.
2. a kind of soft imitative Corii Caprae seu Ovis polyurethane resin as claimed in claim 1, it is characterised in that described modified polyorganosiloxane is the SF-8427 of DOW CORNING.
3. a kind of soft imitative Corii Caprae seu Ovis polyurethane resin as claimed in claim 1, it is characterised in that described wet polyurethane resin is the HDW-3005EB of Shanghai Huide Chemical Co., Ltd..
4. the preparation method of soft imitative Corii Caprae seu Ovis polyurethane resin according to claims 1 to 3 any one claim, it is characterised in that comprise the steps of
1) by DMF and pulp powder mix and blend 10-15 minute, penetrating agent, Edge curl preventing agent, hand feeling agent, mix and blend 10-15 minute are added;
2) in step 1) mixture that obtains adds wet polyurethane resin and oiliness colorant, it is sufficiently stirred for 30-40 minute, deaeration 30 minutes, speed of agitator is 80 revs/min, obtains soft imitative Corii Caprae seu Ovis polyurethane resin.
5. one kind utilizes the soft imitative Corii Caprae seu Ovis polyurethane resin method to prepare imitative Corii Caprae seu Ovis synthetic leather described in claim 1 to 3 any one claim, it is characterised in that comprise the steps of
1) prepared by wet method bass:
Soft imitative Corii Caprae seu Ovis polyurethane resin mixed liquor is added feed chute, make base fabric undercoat face up and be completely submerged in mixed liquor, speed is 10～15m/min, it is 1.20～1.40mm by gap, pressure is the compression roller of 0.3～0.4Mpa, regulate starching amount, extrude unnecessary mixed liquor, immersing concentration again is 18～23%, temperature is the N of 25～30 DEG C, dinethylformamide aqueous solution solidifies, then pass through the compression roller of pressure 0.4～0.5Mpa, wash 10 times with the clear water of 40～60 DEG C, remove the N of residual, dinethylformamide, baking oven expanding shaping and drying finally by baking temperature 125～135 DEG C, obtain wet method bass,
2) sanding of wet method bass processes:
By step 1) face of becoming mildewed of the wet method bass of gained carries out sanding process at driven type polisher, first pass is with 120 order sand paper, sand paper speed of gyration controls at 600～800 revs/min, the second time sand paper with 240 orders, sand paper speed of gyration controls at 800～1000 revs/min, grinding machine speed control system is at 5～8m/min, thickness abrasion 0.03～0.05mm;
3) veneer of wet method bass:
With 140 ± 10g/m in the release paper membrane of plain weave2Coating weight even spread dry method surface layer polyurethane mixed liquor, speed is 15 ± 2m/mim, through 6 meters of baking ovens of 90 ± 5 DEG C, dries 40 ± 5 seconds, the direct pressure by the wet method bass after sanding with 0.25 ± 0.05Mpa, undercoat face is fitted in above-mentioned release paper coating, and laminating gap is 0.25 ± 0.05mm, then through the oven for drying that baking temperature is 130 ± 10 DEG C, after the cooling of cooled roller, paper, leather are peeled off, rolls respectively, obtain semi-finished product leather;
4) semi-finished product leather vacuum pattern absorbing:
By step 3) peel off obtain semi-finished product leather put in the baking oven that oven temperature is 195 ± 3 DEG C preheat 25 ± 5 seconds, place into vacuum tattoo machine and inhale stricture of vagina, vacuum machine negative pressure 0.15 ± 0.05Mpa, inhale 8 ± 3 seconds stricture of vagina time, surface must be arrived and have lines, the imitative Corii Caprae seu Ovis synthetic leather of back side sanding.
6. method according to claim 5, it is characterised in that described base fabric is that blending tWeft Knitted Fabrics washed by the two-sided fluffing brocade of 40D, and one side becomes mildewed, a undercoat.
7. method according to claim 5, it is characterised in that described dry method surface layer polyurethane mixed liquor is made up of the raw material of following mass percent:
8. method according to claim 7, it is characterised in that described dry method polyurethane resin is the HDS-1050HB of Shanghai Huide Chemical Co., Ltd..
9. method according to claim 7, it is characterised in that described modified polyoxy silane is the SF-8427 of commodity DOW CORNING by name.
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CN106087448A (en) * 2016-08-19 2016-11-09 安徽安利材料科技股份有限公司 A kind of preparation method of soft matte high resiliency artificial leather polyurethane synthetic leather for sofa furniture
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CN109098008A (en) * 2018-08-20 2018-12-28 福建华夏合成革有限公司 A kind of suede nap ultra-soft albumen leather
CN109252384A (en) * 2018-10-18 2019-01-22 清远市齐力合成革有限公司 A kind of two-sided leather of Environment-friendlywear-resistant wear-resistant scratch resistance
CN113152116A (en) * 2021-04-29 2021-07-23 浙江旭川树脂有限公司 Method for preparing hydrophobic PU leather by plasma technology
CN113152116B (en) * 2021-04-29 2022-05-24 浙江旭川树脂有限公司 Method for preparing hydrophobic PU leather by plasma technology
CN113817134A (en) * 2021-09-25 2021-12-21 华大化学(安徽)有限公司 Polyurethane resin for air-permeable and moisture-permeable labor protection gloves and preparation method thereof
CN114517415A (en) * 2021-12-22 2022-05-20 盛国(东莞)新材料科技有限公司 Method for manufacturing breathable PU leather
CN115584640A (en) * 2022-10-12 2023-01-10 泉州众信超纤科技股份有限公司 Vacuum grain-absorbing microfiber leather with stable grains and preparation process thereof
CN115584640B (en) * 2022-10-12 2023-12-29 泉州众信超纤科技股份有限公司 Vacuum grain-absorbing microfiber leather with stable grains and preparation process thereof

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