CN105671989B - Soft imitative sheepskin polyurethane resin, preparation method and the method for preparing imitative sheepskin synthetic leather with the soft imitative sheepskin polyurethane resin - Google Patents
Soft imitative sheepskin polyurethane resin, preparation method and the method for preparing imitative sheepskin synthetic leather with the soft imitative sheepskin polyurethane resin Download PDFInfo
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- CN105671989B CN105671989B CN201510969753.8A CN201510969753A CN105671989B CN 105671989 B CN105671989 B CN 105671989B CN 201510969753 A CN201510969753 A CN 201510969753A CN 105671989 B CN105671989 B CN 105671989B
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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
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- 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
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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
- D06N3/0002—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
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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
- D06N3/0034—Polyamide fibres
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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
- 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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- 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
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- 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
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- D06N2209/00—Properties of the materials
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- D06N2209/103—Resistant to mechanical forces, e.g. shock, impact, puncture, flexion, shear, compression, tear
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- D06N2209/16—Properties of the materials having other properties
- D06N2209/1692—Weather resistance
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- D06N2211/10—Clothing
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Abstract
The present invention relates to a kind of soft imitative sheepskin polyurethane resins, including following component：Wet polyurethane resin, N, N dimethylformamides, pulp powder, hand feeling agent, bleeding agent, Edge curl preventing agent and oiliness colorant.The method that the invention further relates to a kind of to imitate sheepskin synthetic leather made of above-mentioned soft imitative sheepskin polyurethane resin, it is characterised in that this method comprises the following steps：Base fabric is immersed in soft imitative sheepskin polyurethane resin mixed liquor first, after squeeze adjustments starching amount, using wet method bass is made after solidification, washing, drying, polishing.Imitative sheepskin synthetic leather is obtained after wet method bass is carried out veneer, vacuum pattern absorbing again.The imitative frivolous softness of sheepskin synthetic leather produced by the present invention, feel exquisiteness high resilience, tearing strength is high, and weather-proof wearability is good, and surface color is soft naturally, lines is full, and three-dimensional sense is strong.
Description
Technical field
The present invention relates to a kind of soft imitative sheepskin polyurethane resin, preparation method and with the soft imitative sheepskin polyurethane resin
Prepare the method for imitating sheepskin synthetic leather.
Background technology
Along with the application of high-tech development and advanced industrial equipment both at home and abroad, China's synthetic leather industry technology is horizontal,
Product specification has qualitative leap.No matter current Synthetic Leather is obtained in product quality, kind or yield
Development at full speed, performance become closer to natural leather, and the performance in terms of some 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 performances such as sucting wet air permeability can be better than corium,
Reach performance and appearance and the very indistinguishable degree of natural leather.
Soft imitative sheepskin Synthetic Leather is to cater to the real leather intimating synthetic leather that has the call currently on the market this hair
The product opened up direction and developed.But there is the not frivolous softness of synthetic leather, feels for soft imitative sheepskin Synthetic Leather at present
Fineless and smooth high resilience, tearing strength is not high, and weather-proof wearability is bad, and surface color is not soft naturally, lines is not full, three-dimensional
Sense is not strong.
Invention content
One of problem to be solved by this invention is deficiency existing in view of the prior art and provides a kind of soft
Imitative sheepskin polyurethane resin.The frivolous softness of synthetic leather obtained using the soft imitative sheepskin polyurethane resin, feel exquisiteness are rich
Elasticity, tearing strength is high, and weather-proof wearability is good, and surface color is soft naturally, lines is full, and three-dimensional sense is strong.
The second technical problem to be solved by the present invention is to provide the preparation side of above-mentioned soft imitative sheepskin polyurethane resin
Method.
The third technical problem to be solved by the present invention is to provide a kind of soft imitative sheepskin polyurethane resin preparation of utilization
The method of imitative sheepskin synthetic leather.
The technical problems to be solved by the invention can be achieved through the following technical solutions：
As the first aspect of the present invention, a kind of soft imitative sheepskin polyurethane resin, which is characterized in that by following quality hundred
Divide the raw material composition of ratio：
The solid content of the wet polyurethane resin is 29%~31%, 100% modulus of the wet polyurethane resin
For 5~15kg/m2；
The hand feeling agent is polypropylene oxide triol；
The bleeding agent is dioctyl maleate sodium sulfonate；
The Edge curl preventing agent is modified polyorganosiloxane.
In a preferred embodiment of the invention, the modified polyorganosiloxane is the SF-8427 of DOW CORNING.
In a preferred embodiment of the invention, the wet polyurethane resin is Shanghai Huide Chemical Co., Ltd.
HDW-3005EB.
A kind of preparation method of soft imitative sheepskin polyurethane resin as second aspect of the present invention, which is characterized in that packet
Containing following steps：
1) n,N-Dimethylformamide and pulp powder are mixed 10-15 minutes, bleeding agent, Edge curl preventing agent, hand is added
Feel agent, is mixed 10-15 minutes；
2) wet polyurethane resin and oiliness colorant are added in the mixture that step 1) obtains, is sufficiently stirred 30-40 points
Clock, deaeration 30 minutes, speed of agitator are 80 revs/min to get soft imitative sheepskin polyurethane resin.
As third aspect present invention, a kind of prepared using above-mentioned soft imitative sheepskin polyurethane resin imitates sheepskin synthetic leather
Method, which is characterized in that comprise the steps of：
1) prepared by wet method bass：
Hopper is added in soft imitative sheepskin polyurethane resin, so that base fabric undercoat is completely submerged in soft imitative sheepskin up poly-
In urethane resin, speed is 10~15m/min, is 1.20~1.40mm by gap, and pressure is the extruding of 0.3~0.4Mpa
Roller, adjust starching amount, squeeze out extra soft imitative sheepskin polyurethane resin, then immerse a concentration of 18~22%, temperature be 25~
It is solidified in 30 DEG C of n,N-Dimethylformamide aqueous solution, then by the compression roller of 0.4~0.5Mpa of pressure, with 40~60 DEG C
Clear water wash 10 times, remove remaining n,N-Dimethylformamide, expand finally by the baking oven of 125~135 DEG C of drying temperature
Width shaping and drying obtains wet method bass；
2) the sanding processing of wet method bass：
The long hair side of wet method bass obtained by step 1) is subjected to sanding processing in driven type sander, first pass is with 120
Mesh sand paper, at 600~800 revs/min, the second time sand paper with 240 mesh, sand paper rotational speed controls the control of sand paper rotational speed
At 800~1000 revs/min, the control of polishing speed wears away 0.03~0.05mm in 5~8m/min, thickness；
3) veneer of wet method bass：
With 140 ± 10g/m in the release paper membrane of plain weave2Coating weight even spread dry method face strata urethane mixed liquor, vehicle
Speed is 15 ± 2m/mim, through 90 ± 5 DEG C of 6 meters of baking ovens, dries 40 ± 5 seconds, directly by the wet method bass after sanding with 0.25 ±
The pressure of 0.05Mpa, undercoat face are fitted in above-mentioned release liners coating, and fitting gap is 0.25 ± 0.05mm, then through dry temperature
Degree is dried for 130 ± 10 DEG C of baking oven, after chill roll cools down, paper, leather is removed, rolled respectively, obtain semi-finished product leather；
4) semi-finished product remove from office vacuum pattern absorbing：
The semi-finished product leather that step 3) stripping obtains is put into the baking oven that oven temperature is 195 ± 3 DEG C and is preheated 25 ± 5 seconds,
It places into vacuum tattoo machine and inhales line, vacuum 0.15 ± 0.05Mpa of machine negative pressure inhales 8 ± 3 seconds line time, and obtaining to surface has lines, the back of the body
The imitative sheepskin synthetic leather of face sanding.
In the preferred embodiment of the present invention, the base fabric is that the two-sided fluffing brocades of 40D wash blended tWeft Knitted Fabrics.
The present invention a more preferred embodiment in, the dry method face strata urethane mixed liquor, which is characterized in that by with
The raw material of lower mass percent forms：
In a preferred embodiment of the invention, the dry method polyurethane resin is Shanghai Huide Chemical Co., Ltd.
HDS-1050HB。
In a preferred embodiment of the invention, the modified polyoxy silane is the SF-8427 of DOW CORNING.
Beneficial effects of the present invention：
A kind of similar sheepskin of the imitative sheepskin synthetic leather of the present invention primarily directed to exploitations such as middle and high end clothing leather, shoes leather
Synthetic leather product.For the various technological difficulties for making real leather intimating synthetic leather, the present invention is mainly similar to realize in terms of two
The physical property and feel feature of sheepskin.First, in terms of the formula of resin, selects dioctyl maleate sodium sulfonate to be used as and oozed
Saturating agent, the use of bleeding agent are to improve the wetting of base fabric, can significantly reduce surface tension, and resin is made to be easier to immerse base fabric
In, the infiltration capacity that resin penetrates into base fabric can be kept more, improved under the premise of working slurry viscosity and fixed speed technique in this way
The voluptuousness of wet method bass.And with the increase of resin infiltration capacity, the intensity of fiber intersection points can be increased, improve tearing for bass
Resistance to spalling.
The present invention has selected modified polyorganosiloxane as Edge curl preventing agent, is to use tWeft Knitted Fabrics to replace traditional warp knit
Looped fabric makees base fabric.TWeft Knitted Fabrics weave and warp knitting cloth are different, more flexible, and the resultant Leather made is closer to corium
The problems such as elasticity and feel if selection weft-knitted fabric often causes bass crimping, are shunk but in leather-making technology, and door amplitude variation is narrow,
Bass obtained but will be made to become stiff due to shrinking feel, the organic silicon Edge curl preventing agent that the present invention selects can effectively solve weft knitting
The crimping and contraction problem of cloth, ensure that the feel of finished product bass.The present invention selects that 2~6% filling (paper is added in formula
Starch), mainly for increasing the voluptuousness of finished product bass, the addition of filler material so that honeycomb of the abscess of finished product closer to corium
Shape structure, feel is also just closer to the voluptuousness of corium.But if filling addition is too big, and resin solid content in base fabric reduces, and holds
Finished product base intensity differences are easily caused, feel is emptying, and voluptuousness is deteriorated.
Second is that in terms of leather-making technology, the extrusion process that the present invention selects base fabric undercoat face-up ensures that base fabric is entering
When coagulating basin solidifies, undercoat is face-down, becomes mildewed up, and in the leather-making technology of the present invention, emphasizes that coagulating basin temperature will be
Between 25~30 DEG C, these special processes solidify slow when long hair side can be made to solidify, long hair side resin penetrates into base fabric
Infiltration rate is relatively low, this can reduce the sanding difficulty of long hair side, and makes the long hair side after polishing closer to the sheepskin back side
Nap effect.
In aspect of performance, compared with sheepskin, feel is torn strong soft imitative sheepskin synthetic leather of the invention close to sheepskin
Degree is high, good weatherability, and wearability is good.In terms of processability, sheepskin is not only limited by natural resources, but also manufacture craft is numerous
Trivial complexity, loss of the finished product skin in processing is larger, and ultra-soft matter is imitated sheepskin Synthetic Leather and do not limited by raw material then,
Product homogeneity is preferable, breadth is consistent, and loss is small to be easy to reduce processing, can partly replace sheepskin to make medium-to-high grade clothing leather, packet
Package material, gloves, shoes leather etc..
Description of the drawings
Fig. 1 is the surface effect schematic diagram after the atmospheric exposure test of the imitative sheepskin synthetic leather products 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 sheepskin synthetic leather products 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 sheepskin synthetic leather products 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 sheepskin synthetic leather products 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 sheepskin synthetic leather products 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 sheepskin synthetic leather products 1 of comparative example.
Specific implementation mode
With reference to specific embodiment, the present invention is described in more detail.
Unless expressly stated otherwise, wet polyurethane resin selects Shanghai Huide Chemical Co., Ltd. to following example
HDW-3005EB；Modified polyorganosiloxane selects the SF-8427 of DOW CORNING；Remaining is commercially available.
Embodiment 1
1. soft imitative sheepskin polyurethane resin formula
Note：The solid content of wet polyurethane resin described in formula is 29%~31%, the 100% of the polyurethane resin
Modulus is 5~15kg/m2。
2. soft imitative sheepskin polyurethane resin preparation method
1) n,N-Dimethylformamide 50kg and pulp powder 2.3kg are mixed 10 minutes, polypropylene oxide three is added
Alcohol 1.0kg, dioctyl maleate sodium sulfonate 0.5kg, modified polyorganosiloxane 0.3kg are mixed 15 minutes.
2) wet polyurethane resin 44kg and oiliness colorant 0.9kg is added in the mixture that step 1) obtains, fully stirs
It mixes 40 minutes, deaeration 30 minutes, speed of agitator is 80 revs/min to get soft imitative sheepskin polyurethane resin.
4. it is the method that sheepskin synthetic leather is imitated made of primary raw material with above-mentioned soft imitative sheepskin polyurethane resin, including with
Lower step：
1) prepared by wet method bass：
Hopper is added in soft imitative sheepskin polyurethane resin, the two-sided fluffing brocades of 40D are washed into blended tWeft Knitted Fabrics undercoat face
It is completely submerged in mixed liquor upward, speed 10m/min, is 1.20mm by gap, pressure is the compression roller of 0.4Mpa, is squeezed
Go out extra soft imitative sheepskin polyurethane resin, then immerses a concentration of 20%, the n,N-Dimethylformamide water that temperature is 25 DEG C
It is solidified in solution 15 minutes, then by the compression roller of pressure 0.4Mpa, squeezes washing 10 times with 60 DEG C of clear water, remove residual
N,N-Dimethylformamide obtain wet method bass finally by 125 DEG C of baking oven expanding shaping and drying of drying temperature；
2) the sanding processing of wet method bass：
The long hair side of wet method bass obtained by step 1) is subjected to sanding processing in driven type sander, first pass is with 150
Mesh sand paper, at 600 revs/min, the second time sand paper with 240 mesh, sand paper rotational speed is controlled 900 the control of sand paper rotational speed
Rev/min, the control of polishing speed wears away 0.03mm in 6m/min, thickness.
3) veneer of wet method bass：
Dry method face strata urethane mixed liquor raw material composition：
By dry method polyurethane resin 52kg, n,N-Dimethylformamide 21kg butanone 21kg, modified polyorganosiloxane 0.5kg,
Oiliness colorant 5.5kg is mixed 20 minutes, obtains dry method face strata urethane mixed liquor.
With 143g/m in plain weave release paper2Coating weight even spread dry method face strata urethane mixed liquor, speed is
15m/mim dries 42 seconds, through 91 DEG C of 6 meters of baking ovens directly by the wet method bass after sanding with the pressure of 0.25Mpa, undercoat face paste
It closes in above-mentioned release liners coating, fitting gap is 0.25mm, then the baking oven for being 130 DEG C through drying temperature is dried, through chill roll
After cooling, paper, leather are removed, rolled respectively, obtains semi-finished product leather.
4) semi-finished product remove from office vacuum pattern absorbing：
The semi-finished product leather that step 3) stripping obtains is put into the baking oven that oven temperature is 193 DEG C and is preheated 28 seconds, is placed into
Vacuum tattoo machine inhales line, and vacuum machine negative pressure 0.20Mpa inhales 10 seconds line time, and obtaining to surface has lines, the imitative sheepskin of back side sanding
Synthetic leather products 1.
Embodiment 2
1. soft imitative sheepskin polyurethane resin formula
Note：The solid content of wet polyurethane resin described in formula is 29%~31%, the 100% of the polyurethane resin
Modulus is 5~15kg/m2。
2. preparation method
1) n,N-Dimethylformamide 52kg and pulp powder 4.0kg are mixed 11 minutes, polypropylene oxide three is added
Alcohol 0.8kg, dioctyl maleate sodium sulfonate 0.2kg, modified polyorganosiloxane 0.2kg are mixed 15 minutes；
2) wet polyurethane resin 41kg and oiliness colorant 1.8kg is added in the mixture that step 1) obtains, fully stirs
It mixes 35 minutes, deaeration 30 minutes, speed of agitator is 80 revs/min to get soft imitative sheepskin polyurethane resin.
3. it is the method that sheepskin synthetic leather is imitated made of primary raw material with above-mentioned soft imitative sheepskin polyurethane resin, including with
Lower step：
1) prepared by wet method bass：
Hopper is added in soft imitative sheepskin polyurethane resin, the two-sided fluffing brocades of 40D are washed into blended tWeft Knitted Fabrics undercoat face
It is completely submerged in mixed liquor upward, speed 12m/min, is 1.30mm by gap, pressure is the compression roller of 0.4Mpa, is squeezed
Go out extra soft imitative sheepskin polyurethane resin, then immerses a concentration of 23%, the n,N-Dimethylformamide water that temperature is 30 DEG C
It is solidified in solution 13 minutes, then by the compression roller of pressure 0.35Mpa, squeezes washing 10 times with 50 DEG C of clear water, remove residual
The n,N-Dimethylformamide stayed obtains wet method bass finally by 130 DEG C of baking oven expanding shaping and drying of drying temperature.
2) the sanding processing of wet method bass：
The long hair side of wet method bass obtained by step 1) is subjected to sanding processing in driven type sander, first pass is with 150
Mesh sand paper, at 700 revs/min, the second time sand paper with 240 mesh, sand paper rotational speed is controlled 800 the control of sand paper rotational speed
Rev/min, the control of polishing speed wears away 0.04mm in 7m/min, thickness.
3) veneer of wet method bass：
Dry method face strata urethane mixed liquor raw material composition：
By dry method polyurethane resin 54kg, n,N-Dimethylformamide 25kg butanone 16kg, modified polyorganosiloxane 0.5kg,
Oiliness colorant 4.5kg is mixed 20 minutes, obtains dry method face strata urethane mixed liquor.
With 145g/m in plain weave release paper2Coating weight even spread dry method face strata urethane mixed liquor, speed is
16m/mim dries 45 seconds, through 97 DEG C of 6 meters of baking ovens directly by the wet method bass after sanding with the pressure of 0.25Mpa, undercoat face paste
It closes in above-mentioned release liners coating, fitting gap is 0.30mm, then the baking oven for being 135 DEG C through drying temperature is dried, through chill roll
After cooling, paper, leather are removed, rolled respectively, obtains semi-finished product leather.
4) semi-finished product remove from office vacuum pattern absorbing：
The semi-finished product leather that step 3) stripping obtains is put into the baking oven that oven temperature is 196 DEG C and is preheated 27 seconds, is placed into
Vacuum tattoo machine inhales line, and vacuum machine negative pressure 0.20Mpa inhales 10 seconds line time, and obtaining to surface has lines, the imitative sheepskin of back side sanding
Synthetic leather products 2.
Embodiment 3
1. soft imitative sheepskin polyurethane resin formula
Note：The solid content of wet polyurethane resin described in formula is 29%~31%, the 100% of the polyurethane resin
Modulus is 5~15kg/m2。
2. preparation method
1) n,N-Dimethylformamide 54kg and pulp powder 4.6kg are mixed 12 minutes, polypropylene oxide three is added
Alcohol 0.85kg, dioctyl maleate sodium sulfonate 0.8kg, modified polyorganosiloxane 0.15kg are mixed 10 minutes；
2) wet polyurethane resin 38kg and oiliness colorant 1.6kg is added in the mixture that step 1) obtains, fully stirs
It mixes 30 minutes, deaeration 30 minutes, speed of agitator is 80 revs/min to get soft imitative sheepskin polyurethane resin.
3. it is the method that sheepskin synthetic leather is imitated made of primary raw material with above-mentioned soft imitative sheepskin polyurethane resin, including with
Lower step：
1) prepared by wet method bass：
Hopper is added in soft imitative sheepskin polyurethane resin mixed liquor, the two-sided fluffing brocades of 40D are washed into blended tWeft Knitted Fabrics
Undercoat is completely submerged in mixed liquor up, speed 10m/min, is 1.40mm by gap, and pressure is squeezing for 0.4Mpa
Pressure roller squeezes out extra mixed liquor, then immerses a concentration of 19%, is coagulated in the n,N-Dimethylformamide aqueous solution that temperature is 26 DEG C
Gu 15 minutes, then by the compression roller of pressure 0.45Mpa, squeezing washing 10 times with 50 DEG C of clear water, removing remaining N, N-
Dimethylformamide obtains wet method bass finally by 130 DEG C of baking oven expanding shaping and drying of drying temperature.
2) the sanding processing of wet method bass：
The long hair side of wet method bass obtained by step 1) is subjected to sanding processing in driven type sander, first pass is with 150
Mesh sand paper, at 800 revs/min, the second time sand paper with 240 mesh, sand paper rotational speed control exists the control of sand paper rotational speed
1000 revs/min, the control of polishing speed wears away 0.05mm in 8m/min, thickness.
3) veneer of wet method bass：
Dry method face strata urethane mixed liquor raw material composition：
By dry method polyurethane resin 50kg, n,N-Dimethylformamide 25kg butanone 20kg, modified polyorganosiloxane 0.3kg,
Oiliness colorant 4.7kg is mixed 20 minutes, obtains dry method face strata urethane mixed liquor.
With 140g/m in plain weave release paper2Coating weight even spread dry method face strata urethane mixed liquor, speed is
17m/mim dries 40 seconds, through 95 DEG C of 6 meters of baking ovens directly by the wet method bass after sanding with the pressure of 0.25Mpa, undercoat face paste
It closes in above-mentioned release liners coating, fitting gap is 0.25mm, then the baking oven for being 125 DEG C through drying temperature is dried, through chill roll
After cooling, paper, leather are removed, rolled respectively, obtains semi-finished product leather.
4) semi-finished product remove from office vacuum pattern absorbing：
The semi-finished product leather that step 3) stripping obtains is put into the baking oven that oven temperature is 195 DEG C and is preheated 30 seconds, is placed into
Vacuum tattoo machine inhales line, and vacuum machine negative pressure 0.15Mpa inhales 8 seconds line time, and obtaining to surface has lines, the imitative sheepskin of back side sanding
Synthetic leather products 3.
Embodiment 4
1. soft imitative sheepskin polyurethane resin formula
Note：The solid content of wet polyurethane resin described in formula is 29%~31%, the 100% of the polyurethane resin
Modulus is 5~15kg/m2。
2. preparation method
1) n,N-Dimethylformamide 55kg and pulp powder 5.5kg are mixed 15 minutes, polypropylene oxide three is added
Alcohol 0.4kg, dioctyl maleate sodium sulfonate 0.5kg, modified polyorganosiloxane 0.2kg are mixed 10 minutes；
2) wet polyurethane resin 37kg and oiliness colorant 1.4kg is added in the mixture that step 1) obtains, fully stirs
It mixes 40 minutes, deaeration 30 minutes, speed of agitator is 80 revs/min to get soft imitative sheepskin polyurethane resin.
3. it is the method that sheepskin synthetic leather is imitated made of primary raw material with above-mentioned soft imitative sheepskin polyurethane resin, including with
Lower step：
1) prepared by wet method bass：
Hopper is added in soft imitative sheepskin polyurethane resin mixed liquor, the two-sided fluffing brocades of 40D are washed into blended tWeft Knitted Fabrics
Undercoat is completely submerged in mixed liquor up, speed 12m/min, is 1.30mm by gap, and pressure is squeezing for 0.4Mpa
Pressure roller squeezes out extra mixed liquor, then immerses a concentration of 18%, is coagulated in the n,N-Dimethylformamide aqueous solution that temperature is 29 DEG C
Gu 13 minutes, then by the compression roller of pressure 0.4Mpa, squeezing washing 10 times with 45 DEG C of clear water, removing remaining N, N- bis-
Methylformamide obtains wet method bass finally by 135 DEG C of baking oven expanding shaping and drying of drying temperature.
2) the sanding processing of wet method bass：
The long hair side of wet method bass obtained by step 1) is subjected to sanding processing in driven type sander, first pass is with 150
Mesh sand paper, at 600 revs/min, the second time sand paper with 240 mesh, sand paper rotational speed is controlled 800 the control of sand paper rotational speed
Rev/min, the control of polishing speed wears away 0.04mm in 7m/min, thickness.
3) veneer of wet method bass：
Dry method face strata urethane mixed liquor raw material composition：
By dry method polyurethane resin 48kg, n,N-Dimethylformamide 20kg butanone 24kg, modified polyorganosiloxane 0.5kg,
Oiliness colorant 7.5kg is mixed 20 minutes, obtains dry method face strata urethane mixed liquor.
With 140g/m in plain weave release paper2Coating weight even spread dry method face strata urethane mixed liquor, speed is
17m/mim dries 38 seconds, through 90 DEG C of 6 meters of baking ovens directly by the wet method bass after sanding with the pressure of 0.25Mpa, undercoat face paste
It closes in above-mentioned release liners coating, fitting gap is 0.25mm, then the baking oven for being 128 DEG C through drying temperature is dried, through chill roll
After cooling, paper, leather are removed, rolled respectively, obtains semi-finished product leather.
4) semi-finished product remove from office vacuum pattern absorbing：
The semi-finished product leather that step 3) stripping obtains is put into the baking oven that oven temperature is 192 DEG C and is preheated 25 seconds, is placed into
Vacuum tattoo machine inhales line, and vacuum machine negative pressure 0.13Mpa inhales 10 seconds line time, and obtaining to surface has lines, the imitative sheepskin of back side sanding
Synthetic leather products 4.
Embodiment 5
1. soft imitative sheepskin polyurethane resin formula
Note：The solid content of wet polyurethane resin described in formula is 29%~31%, the 100% of the polyurethane resin
Modulus is 5~15kg/m2。
2. preparation method
1) n,N-Dimethylformamide 51kg and pulp powder 3.5kg are mixed 15 minutes, polypropylene oxide three is added
Alcohol 1.0kg, dioctyl maleate sodium sulfonate 0.3kg, modified polyorganosiloxane 0.35kg are mixed 12 minutes；
2) wet polyurethane resin 43kg and oiliness colorant 0.85kg is added in the mixture that step 1) obtains, fully stirs
It mixes 340 minutes, deaeration 30 minutes, speed of agitator is 80 revs/min to get soft imitative sheepskin polyurethane resin.
3. it is the method that sheepskin synthetic leather is imitated made of primary raw material with above-mentioned soft imitative sheepskin polyurethane resin, including with
Lower step：
1) prepared by wet method bass：
Hopper is added in soft imitative sheepskin polyurethane resin mixed liquor, the two-sided fluffing brocades of 40D are washed into blended tWeft Knitted Fabrics
Undercoat is completely submerged in mixed liquor up, speed 15m/min, is 1.40mm by gap, and pressure is squeezing for 0.35Mpa
Pressure roller squeezes out extra mixed liquor, then immerses a concentration of 21%, is coagulated in the n,N-Dimethylformamide aqueous solution that temperature is 26 DEG C
Gu 14 minutes, then by the compression roller of pressure 0.4Mpa, squeezing washing 10 times with 50 DEG C of clear water, removing remaining N, N- bis-
Methylformamide obtains wet method bass finally by 130 DEG C of baking oven expanding shaping and drying of drying temperature.
2) the sanding processing of wet method bass：
The long hair side of wet method bass obtained by step 1) is subjected to sanding processing in driven type sander, first pass is with 150
Mesh sand paper, at 800 revs/min, the second time sand paper with 240 mesh, sand paper rotational speed is controlled 100 the control of sand paper rotational speed
Rev/min, the control of polishing speed wears away 0.05mm in 8m/min, thickness.
3) veneer of wet method bass：
Dry method face strata urethane mixed liquor raw material composition：
By dry method polyurethane resin 46kg, n,N-Dimethylformamide 23kg butanone 23kg, modified polyorganosiloxane 0.6kg,
Oiliness colorant 7.4kg is mixed 20 minutes, obtains dry method face strata urethane mixed liquor.
With 150g/m in plain weave release paper2Coating weight even spread dry method face strata urethane mixed liquor, speed is
17m/mim dries 38 seconds, through 85 DEG C of 6 meters of baking ovens directly by the wet method bass after sanding with the pressure of 0.30Mpa, undercoat face paste
It closes in above-mentioned release liners coating, fitting gap is 0.30mm, then the baking oven for being 140 DEG C through drying temperature is dried, through chill roll
After cooling, paper, leather are removed, rolled respectively, obtains semi-finished product leather.
4) semi-finished product remove from office vacuum pattern absorbing：
The semi-finished product leather that step 3) stripping obtains is put into the baking oven that oven temperature is 195 DEG C and is preheated 25 seconds, is placed into
Vacuum tattoo machine inhales line, and vacuum machine negative pressure 0.15Mpa inhales 10 seconds line time, and obtaining to surface has lines, the imitative sheepskin of back side sanding
Synthetic leather products 5.
1-5 of the embodiment of the present invention is prepared the soft imitative sheepskin synthetic leather 1-5 and the commercially available sheepskin of comparative example of gained by inventor
Leather has carried out atmospheric exposure test, tests the difference of its surface situation of change and peel strength under conditions of identical temperature and humidity
It is different.
1. experimental procedure：
(1) by the commercially available sheep sample of soft imitative sheepskin synthetic leather 1-5 and comparative example, it is cut into the batten of the ㎝ of 20 ㎝ × 30,
Batten number is followed successively by No. 1-6.
(2) the experiment batten that step (1) is prepared to the number 1-6 of gained is vertically hung in climatic chamber, is tested two weeks
Peel strength afterwards and tearing strength, comparison surface situation of change.
2. experimental result：
The surface condition of soft imitative sheepskin synthetic leather and comparative example sheep sample produced by the present invention compares and peel strength
Comparative experiments the results are shown in Table 1~3.
Weatherability test uses GT-7005-T desktop constant temperature and moisture tests, 75 ± 2 DEG C of measuring temperature, humidity 95 ± 2%
2 weeks testing times.
Leather sample surface condition compares, and is changed with 20 times of camera lens observation leather sample surface using VHX-2000E digit microscopes
Situation is evaluated.
Peel strength test, tearing strength test are tested using AL-700S SERVO CONTROL computer system tensile testing machines and are removed from office
The data of peel strength, are evaluated according to test data before and after sample constant temperature and humidity.
Table 1
| Remove from office sample number | Embodiment and comparative example | Constant temperature and humidity front surface situation | Constant temperature and humidity rear surface situation |
| 1 | Soft imitative sheepskin synthetic leather 1 | Surfacing, lines are clear | Surfacing, lines are clear |
| 2 | Soft imitative sheepskin synthetic leather 2 | Surfacing, lines are clear | Surfacing, lines are clear |
| 3 | Soft imitative sheepskin synthetic leather 3 | Surfacing, lines are clear | Surfacing, lines are clear |
| 4 | Soft imitative sheepskin synthetic leather 4 | Surfacing, lines are clear | Surfacing, lines are clear |
| 5 | Soft imitative sheepskin synthetic leather 5 | Surfacing, lines are clear | Surfacing, lines are clear |
| 6 | Commercially available sheep | Surfacing, lines are clear | Surface has broken skin, lines to shoal |
Table 2
Table 3
Shown in table 1 and Fig. 1 to Fig. 6, it can be seen that all items of leather and comparative example of soft imitative sheepskin synthetic leather 1-5 is commercially available
The all items of sheep are compared, obviously better than the leather sample of comparative example 6 in constant temperature and humidity rear surface situation, and the front and back stripping of constant temperature and humidity is strong
The conservation rate of degree is also apparent better than the leather sample of comparative example 6, and the tearing strength before and after constant temperature and humidity is also superior to comparative example, explanation
The weather resistance of the soft imitative sheepskin synthetic leather of the present invention is better than commercially available sheepskin.
1-5 of the embodiment of the present invention is prepared the imitative sheepskin synthetic leather 1-5 of gained and the commercially available sheep of comparative example by inventor to be made
Abrasion test is carried out with ASTM D3884 cloth abrasions test methods, tests the performance of its surface abrasion resistance scratch resistance.
1. experimental procedure：
(1) by soft imitative sheepskin synthetic leather 1-5 and the commercially available sheep sample of comparative example, outer diameter 108mm, internal diameter 8mm samples are cut into
Piece, print number are followed successively by No. 1-6.
(2) print is statically placed in 23 ± 2 DEG C of temperature before experiment, 24 hours in the state of relative humidity 60 ± 5%.
(3) test sample is attached on identical size paster, wear-resisting test is carried out under identical conditions.
(4) test sample is face-up placed on testing machine, fixes test sample with fixed ring, grinding wheel is placed on
Abrasion performance experiment is carried out on test sample, print is mutual with CS-10 standard grinding wheels under conditions of gravity 1000g/ turns when test
Contact, and sample is made to generate " X " type friction by the turning effort of a pair of of friction pulley, so that test specimens is received multidirectional uniform mill
Damage.Observe test sample surface abrasion situation, record experiment Rubbing number.
2. experimental result：
The wear-resisting experimental result of soft imitative sheepskin synthetic leather produced by the present invention and commercially available sheep sample is shown in Table 4.
National Standard of the People's Republic of China GB/T21196.2-2007 is used after wear-resisting test《Textile Martindale's method
The measurement part 2 of fabric abrasion resistance：The measurement of sample breakage》It is evaluated.Specimen surface after the completion of test, which should rub, to be made
At hole, diameter is at least 0.5mm or face coat is partially destroyed to exposing base fabric or have partial coating to fall off conduct
Frictional endpoint is sample breakage.
Table 4
The print of soft imitative sheepskin synthetic leather 1-5 is compared with the print of comparative example as can be seen from Table 4, surface abrasion degree
Gently, and the surface abrasion of comparative example is than more serious.Illustrate that the excellent wear-resisting property of soft imitative sheepskin synthetic leather of the present invention can be with
Corium compares favourably, and can be widely applied to the fields such as clothes, luggage.
Claims (5)
1. a kind of method preparing imitative sheepskin synthetic leather using soft imitative sheepskin polyurethane resin, which is characterized in that comprising with
Lower step：
1) prepared by wet method bass：
Hopper is added in soft imitative sheepskin polyurethane resin, so that base fabric undercoat is completely submerged in mixed liquor up, speed is
10~15m/min is 1.20~1.40mm by gap, and pressure is the compression roller of 0.3~0.4MPa, adjusts starching amount, squeezes out
Extra mixed liquor, then a concentration of 18~23% are immersed, it is coagulated in the n,N-Dimethylformamide aqueous solution that temperature is 25~30 DEG C
Gu then being washed 10 times with 40~60 DEG C of clear water by the compression roller of 0.4~0.5MPa of pressure, removing remaining N, N- bis-
Methylformamide obtains wet method bass finally by 125~135 DEG C of baking oven expanding shaping and drying of drying temperature；
2) the sanding processing of wet method bass：
The long hair side of wet method bass obtained by step 1) is subjected to sanding processing, 120 mesh sand of first pass in driven type sander
Paper, at 600~800 revs/min, the second time sand paper with 240 mesh, sand paper rotational speed control exists the control of sand paper rotational speed
800~1000 revs/min, the control of polishing speed wears away 0.03~0.05mm in 5~8m/min, thickness；
3) veneer of wet method bass：
With 140 ± 10g/m in the release paper membrane of plain weave2Coating weight even spread dry method face strata urethane mixed liquor, speed 15
± 2m/mim dries 40 ± 5 seconds, through 90 ± 5 DEG C of 6 meters of baking ovens directly by the wet method bass after sanding with 0.25 ± 0.05MPa's
Pressure, undercoat face are fitted in above-mentioned release liners coating, fitting gap be 0.25 ± 0.05mm, then through drying temperature be 130 ±
Paper, leather are removed, are rolled respectively after chill roll cools down by 10 DEG C of baking oven drying, obtain semi-finished product leather；
4) semi-finished product remove from office vacuum pattern absorbing：
The semi-finished product leather that step 3) stripping obtains is put into the baking oven that oven temperature is 195 ± 3 DEG C and is preheated 25 ± 5 seconds, then is put
Enter vacuum tattoo machine and inhale line, vacuum 0.15 ± 0.05MPa of machine negative pressure inhales 8 ± 3 seconds line time, and obtaining to surface has lines, the back side
The imitative sheepskin synthetic leather of sanding；
The soft imitative sheepskin polyurethane resin, is made of the raw material of following mass percent：
The wet polyurethane resin is the HDW-3005EB of Shanghai Huide Chemical Co., Ltd.；
The hand feeling agent is polypropylene oxide triol；
The bleeding agent is dioctyl maleate sodium sulfonate；
The Edge curl preventing agent is modified polyorganosiloxane；
The preparation method of the soft imitative sheepskin polyurethane resin, comprises the steps of：
1) n,N-Dimethylformamide and pulp powder are mixed 10-15 minutes, addition bleeding agent, Edge curl preventing agent, hand feeling agent,
It is mixed 10-15 minutes；
2) wet polyurethane resin and oiliness colorant are added in the mixture that step 1) obtains, is sufficiently stirred 30-40 minutes, takes off
Bubble 30 minutes, speed of agitator are 80 revs/min to get soft imitative sheepskin polyurethane resin.
2. according to the method described in claim 1, it is characterized in that, the base fabric, which is the two-sided fluffing brocades of 40D, washs blended weft knitting
Looped fabric becomes mildewed on one side, a face undercoat.
3. according to the method described in claim 1, it is characterized in that, the dry method face strata urethane mixed liquor is by following quality
The raw material of percentage forms：
4. according to the method described in claim 3, it is characterized in that, the dry method polyurethane resin be Shanghai converge chemical industry is limited
The HDS-1050HB of company.
5. according to the method described in claim 3, it is characterized in that, the modified polyoxy silane is trade name DOW CORNING
SF-8427。
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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 |
| CN108035164A (en) * | 2017-12-01 | 2018-05-15 | 南亚塑胶工业（南通）有限公司 | It is a kind of with rub resistance, water suction, sweat proof effect PU Yoga mat products and preparation method thereof |
| CN108823998A (en) * | 2018-08-10 | 2018-11-16 | 福建兰峰制革有限公司 | The production method of flannelette synthetic leather |
| CN108867086B (en) * | 2018-08-20 | 2021-01-01 | 福建华夏合成革有限公司 | Weft-knitted soft protein leather and preparation method thereof |
| 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 |
| 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 |
| CN115584640B (en) * | 2022-10-12 | 2023-12-29 | 泉州众信超纤科技股份有限公司 | Vacuum suction microfiber leather with stable texture and its preparation process |
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