CN110409195A - A kind of preparation method of high resiliency synthetic leather - Google Patents
A kind of preparation method of high resiliency synthetic leather Download PDFInfo
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- CN110409195A CN110409195A CN201810378340.6A CN201810378340A CN110409195A CN 110409195 A CN110409195 A CN 110409195A CN 201810378340 A CN201810378340 A CN 201810378340A CN 110409195 A CN110409195 A CN 110409195A
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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
- D06N3/0011—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the substrate using non-woven fabrics
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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
- D06N3/0056—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the compounding ingredients of the macro-molecular coating
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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
- D06N3/0056—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the compounding ingredients of the macro-molecular coating
- D06N3/0061—Organic fillers or organic fibrous fillers, e.g. ground leather waste, wood bark, cork powder, vegetable flour; Other organic compounding ingredients; Post-treatment with organic compounds
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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
- D06N3/145—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 two or more layers of 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
- D06N2209/00—Properties of the materials
- D06N2209/16—Properties of the materials having other properties
- D06N2209/1635—Elasticity
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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
- D06N2209/00—Properties of the materials
- D06N2209/16—Properties of the materials having other properties
- D06N2209/1642—Hardnes
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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
- D06N2211/00—Specially adapted uses
- D06N2211/12—Decorative or sun protection articles
- D06N2211/28—Artificial leather
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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)
- Wood Science & Technology (AREA)
- Synthetic Leather, Interior Materials Or Flexible Sheet Materials (AREA)
Abstract
The present invention provides a kind of preparation methods of high resiliency synthetic leather, are related to synthetic leather preparation technical field, to solve the poor technical problem of traditional non-woven cloth PU synthetic leather resilience.The present invention is that high-elastic impregnation material and high-elastic wet process slurry are successively coated on high-elastic non-woven fabric surface, again by the high-elastic non-woven fabric after coating successively solidified, washed, dried and ground skin and etc. the physical properties of high resiliency synthetic leather of preparation significantly improve and reach professional standard, and when high resiliency synthetic leather prepared by the present invention is applied to dress ornament, footwear product, softness is more preferable, elasticity can more make movable more smooth, comfort when meeting the needs of physical activity and wearing at the positions such as human elbow, knee joint, ankle-joint.
Description
Technical field
The present invention relates to synthetic leather preparation technical field, in particular to a kind of preparation method of high resiliency synthetic leather.
Background technique
Natural leather has a long history, excellent characteristic, and application field is extensive.Due to the rapid expansion of population,
The demand of society is continuously increased, and the scarcity of former skin resource, natural leather can not meet the normal demand of people, both domestic and external
Scholar starts the research and development synthetic leather close with natural leather appearance, functional performance in order to solve this problem.
Synthetic leather is the plastic products simulated the Nomenclature Composition and Structure of Complexes of natural leather and can be used as its substitute material.Usually through soaking
The non-woven fabrics of stain is lamina reticularis, and microvoid polyurethane layer is made as grain layer.Its front and back sides is all quite similar with leather, and has
Certain gas permeability, than common artificial leather closer to natural leather.Synthetic leather is in the daily life of the mankind in occupation of particularly significant
Status, be widely used in producing luggage, clothes, footwear and interior ornaments etc..
Synthetic leather industry is as having new industry with broad prospects for development, increasingly by the favor of investor.With
Development in science and technology and progress, the new and high technologies such as ultrasonic technology, electronic technology and high pressure technique will all be widely applied and arrive synthetic leather
Field.Although these new high-tech product functions are relatively abundanter, since existing synthetic leather feel feel elasticity is all bad, so that
User experience is very undesirable.
Summary of the invention
It is an object of that present invention to provide a kind of high resiliency synthetic leather, poor to solve traditional non-woven cloth PU synthetic leather resilience
The technical issues of.
To achieve the above object, the present invention provides a kind of preparation method of high resiliency synthetic leather, following step is specifically included
It is rapid:
It is taken turns 1. high-elastic non-woven fabric is plated by the group front of storage cloth holder, pressing temperature is 105-115 DEG C, speed 9m/
Min, after pressing, non-woven fabrics passes through the impregnating groove progress starching added with high-elastic impregnation slurry, and using coating cloth deck after starching, use is soft
After scraper wipes extra high-elastic impregnation material off, first coating is formed；The high-elastic impregnation slurry coating amount of paying is 0.38-
0.42kg/y；
2. using high-elastic wet process slurry along soft blade coating in first coating, forming second coating after coating, first is applied
Layer and the control of second coating gap are at 170-180；The high-elastic wet process slurry coating amount of paying of the high-elastic impregnation slurry is 1.25-
1.35kg/y；
3. by the dimethyl methyl that mass fraction is 15-25% is immersed containing the high-elastic non-woven fabric of first coating and second coating
It is solidified in amide solution, setting time 8-15min controls to get semi-finished product synthetic leather, setting temperature at 26-30 DEG C；
4. the semi-finished product synthetic leather gradient after solidification is washed 15 times, dimethylformamide residual concentration drops to 0%, water
65-70 DEG C again of temperature range control is washed, carrying out eight wheel temperature after washing again is that 110-130 DEG C of boiling hot roller is pre- boiling hot, is then determined again
Width is 5 times dry, and temperature is controlled at 160-140 DEG C, is put into decorticating mill after dry and is gently swept to surfacing with the sand paper of 180 mesh, then
It it is put into heat after being soaked completely with water rubs machine and carries out heat and rub, it is 90 DEG C to get synthetic leather that heat, which rubs machine temperature,.
Further, the high-elastic non-woven fabric thickness control is in 0.58-0.62mm.
Further, it is 3% polyvinyl alcohol that the high-elastic non-woven fabric first uses mass fraction before being coated with high-elastic impregnation slurry
Solution is impregnated with, concrete operation method are as follows: by high-elastic non-woven fabric through pressing after impregnation board is impregnated with what is prepared containing immersion liquid
Roll-in is dry, makes polyvinyl alcohol upper liquid containing immersion liquid concentration up to 30%, is carried out by 30 meters of baking ovens at 170 degree with 10 ms/min of speeds
Drying, thickness of being formed after drying is to 0.55-0.65mm.
Further, the high-elastic impregnation slurry is that highly-elastic urethane is impregnated with portions of resin dimethylformamide: tear-proof helps
Agent: anionic surfactant: water-fast enzymolysis auxiliary agent: color by 100: 200: 15: 2: 1: 15 weight ratio mixing at normal temperature with
The mixing speed of 1000-1500r/min is stirred 15-20 minutes to resin, and color, water-fast enzymolysis auxiliary agent is completely dissolved, viscosity
Control is controlled in 200-300cps, temperature at 26 DEG C.
Further, the high-elastic wet process slurry is by highly-elastic urethane portions of resin dimethylformamide: non-ionic surface is living
Property agent: water-fast enzymolysis auxiliary agent: color by 100: 32: 2: 0.5: 3 weight ratio mixing after at normal temperature with 1000-1500r/min's
Mixing speed carries out high-speed stirred 30-35 minutes to polyurethane, and color, water-fast enzymolysis auxiliary agent uniform dissolution, attenuating mixing speed is extremely
250-350r/min carries out vacuum defoamation 90min, and viscosity control is controlled in 16000cps-17000cps, temperature at 26 DEG C.
Further, the specific steps of gradient washing are as follows: first wash semi-finished product synthetic leather 6 times, so that semi-finished product
Dimethylformamide residual concentration drops to 10-20% in synthetic leather；Followed by washing 6 times, so that two in semi-finished product synthetic leather
Methylformamide residual concentration drops to 5-10%；It finally then washes 3 times, so that dimethylformamide in semi-finished product synthetic leather
Residual concentration drops to 0%；
Further, the dry specific temperature control of the tentering are as follows: the first secondary control oven temperature is 150 DEG C, second
It is 160 DEG C to four secondary control oven temperatures, the 5th secondary control oven temperature is 140 DEG C to being completely dried.
The invention has the following advantages:
1, compared with traditional non-woven cloth PU synthetic leather, the physical properties of high resiliency synthetic leather prepared by the present invention are significant
Professional standard is improved and reaches, through detecting, high resiliency synthetic leather tensile strength 42.39N/mm of the present invention2, elongation at break
109%, bursting strength 317N/mm, tearing strength 146N/mm, water vapour permeability 1438/mg. (10cm2.24h)-1；Due to the present invention
The characteristic of the synthetic leather of preparation, when being applied to dress ornament, footwear product, softness is more preferable, and elasticity can more be such that human body elbow closes
Movable more smooth, comfort when meeting the needs of physical activity and wearing at the positions such as section, knee joint, ankle-joint.
2, the present invention prepare high-elastic impregnation expect when, the present invention select highly-elastic urethane contain resin pickup based on expect diformazan again
Other auxiliary agents such as base formamide, tear-proof auxiliary agent, anionic surfactant are prepared high-elastic after mixing in specific proportions
Impregnation material storage stability is high, and can store in normal temperature environment 6-8 months, and moderate viscosity, slurry fluidity is good, and film is flat
Whole property and softness are higher, and water vapor permeability is more preferably.
(highly-elastic urethane is impregnated with portions of resin dimethylformamide: tear-proof auxiliary agent: anion table with the high-elastic impregnation material of tradition
Face activating agent: water-fast enzymolysis auxiliary agent: color is mixed by 100: 300: 15: 2: 1: 15 weight ratio) it compares, the present invention uses high-elastic
(highly-elastic urethane is impregnated with portions of resin dimethylformamide: tear-proof auxiliary agent: anionic surfactant: water-fast enzymolysis auxiliary agent to impregnation material
: color press 100: 200: 15: 2: 1: 15 weight ratio) in solvent dimethylformamide reduce, improve unit area cohesion ammonia
Ester resin content is increased to 10% by original 6.3%, and polyurethane content improves 3.7% in equal unit volume, not only makes
The safer environmental protection of the synthetic leather of preparation, it is more advantageous to impregnation material and is distributed in high-elastic base fabric, it is after measured, consistent in other conditions
In the case where, coat the film water vapor permeability 256.7/mg. (10cm that high-elastic impregnation slurry is formed2.24h)-1, it is softness 9, smooth
Degree 8；The film water vapor permeability 246.18/mg. (10cm that the high-elastic impregnation material of coating tradition is formed2.24h)-1, it is softness 5, smooth
Degree 6.
3, for the present invention when preparing high-elastic wet process slurry, it is major ingredient that the present invention, which selects highly-elastic urethane resin, then is equipped with two
The high resiliency wet process slurry that other auxiliary agents such as methylformamide, nonionic surfactant, water-fast enzymolysis auxiliary agent are mixed with
Same property is stablized, and period of storage reaches 7-9 months under room temperature, moderate viscosity, good fluidity, film planarization and softness
Height, water vapor permeability are good.
With high-elastic wet process slurry (the highly-elastic urethane portions of resin dimethylformamide: nonionic surfactant: water-fast of tradition
Enzymolysis auxiliary agent: color is mixed by 100: 40: 2: 0.5: 3 weight ratio) it compares, the present invention uses high-elastic wet process slurry (high-elastic poly- ammonia
Ester portions of resin dimethylformamide: nonionic surfactant: water-fast enzymolysis auxiliary agent: color presses 100: 32: 2: 0.5: 3 weight ratio
Mixing) in solvent dimethylformamide reduce, improve polyurethane resin content in unit area and by original 21% be increased to 26%,
Polyurethane content improves 5% in equal unit volume, not only makes the safer environmental protection of synthetic leather of preparation, but also returns after forming a film
Elasticity can be more；After measured, under other conditions unanimous circumstances, the film water vapor permeability that high-elastic wet process slurry is formed is coated
264.2/mg.(10cm2.24h)-1, softness 9, smooth degree 8；The film vapor pervious that the high-elastic wet process slurry of coating tradition is formed
Property 239.15/mg. (10cm2.24h)-1, softness 7, smooth degree 5.
Other than objects, features and advantages described above, there are also other objects, features and advantages by the present invention.
The present invention is further detailed explanation below.
Specific embodiment
The embodiment of the present invention is described in detail below, but the present invention can be limited and be covered according to claim
Multitude of different ways implement.
Embodiment 1
A kind of preparation method of high resiliency synthetic leather, specifically includes the following steps:
1. dense to upper liquid by being impregnated with for 3% polyvinyl alcohol containing immersion liquid with a thickness of the high-elastic non-woven fabric of 0.58mm with mass fraction
Degree is dried up to being pressed dry after 30% through pressure roller, by 30 meters of baking ovens at 170 degree with 10 ms/min of speeds, and sizing thickness is extremely after drying
0.59mm；
2. step 1. treated high-elastic non-woven fabric is plated wheel by the group front of storage cloth holder, pressing temperature is 105 DEG C,
Speed 9m/min, after pressing, non-woven fabrics passes through the impregnating groove progress starching added with high-elastic impregnation slurry, using coating after starching
Platform after being wiped off extra high-elastic impregnation material with soft scraper, forms first coating；The high-elastic impregnation slurry coating, which pays to measure, is
0.38kg/y；The high-elastic impregnation slurry is that highly-elastic urethane is impregnated with portions of resin dimethylformamide: tear-proof auxiliary agent: yin
Ionic surface active agent: water-fast enzymolysis auxiliary agent: color is mixed by 100: 200: 15: 2: 1: 15 weight ratio at normal temperature with 1000r/
The mixing speed of min is stirred 15 minutes to resin, and color, water-fast enzymolysis auxiliary agent is completely dissolved, and viscosity control is in 200cps, temperature
Degree control is at 26 DEG C；
3. using high-elastic wet process slurry along soft blade coating in first coating, forming second coating after coating, first is applied
Layer and the control of second coating gap are at 170；The high-elastic wet process slurry is by highly-elastic urethane portions of resin dimethylformamide
: nonionic surfactant: water-fast enzymolysis auxiliary agent: color by 100: 32: 2: 0.5: 3 weight ratio mixing after at normal temperature with
The mixing speed of 1000r/min carries out high-speed stirred 30 minutes to polyurethane, color, water-fast enzymolysis auxiliary agent uniform dissolution, and attenuating is stirred
It mixes speed and carries out vacuum defoamation 90min to 250r/min, viscosity control is controlled in 16000cps, temperature at 26 DEG C；
4. by the dimethyl formyl that mass fraction is 15% is immersed containing the high-elastic non-woven fabric of first coating and second coating
It is solidified in amine aqueous solution, setting time 8min controls to get semi-finished product synthetic leather, setting temperature at 26 DEG C；
5. the semi-finished product synthetic leather gradient after solidification is washed 15 times, dimethylformamide residual concentration drops to 0%, water
65 DEG C again of temperature range control is washed, carrying out eight wheel temperature after washing again is that 110 DEG C of boiling hot rollers are pre- boiling hot, then carries out tentering dry 5 again
Secondary, temperature is controlled at 160-140 DEG C, is put into decorticating mill after dry and is gently swept to surfacing with the sand paper of 180 mesh, then is complete with water
Be put into after soaking heat rub machine carry out heat rub, heat rub machine temperature be 90 DEG C to get synthetic leather；The specific steps of the gradient washing
Are as follows: semi-finished product synthetic leather is first washed 6 times, so that dimethylformamide residual concentration drops to 10% in semi-finished product synthetic leather；
Followed by washing 6 times, so that dimethylformamide residual concentration drops to 5% in semi-finished product synthetic leather；Finally then wash 3
It is secondary, so that dimethylformamide residual concentration drops to 0% in semi-finished product synthetic leather；The dry specific temperature control of the tentering
Be made as: the first secondary control oven temperature is 150 DEG C, and the second to four secondary control oven temperature is 160 DEG C, the 5th secondary control baking oven temperature
Degree is for 140 DEG C to being completely dried.
Embodiment 2
A kind of preparation method of high resiliency synthetic leather, specifically includes the following steps:
1. dense to upper liquid by being impregnated with for 3% polyvinyl alcohol containing immersion liquid with a thickness of the high-elastic non-woven fabric of 0.62mm with mass fraction
Degree is dried up to being pressed dry after 30% through pressure roller, by 30 meters of baking ovens at 170 degree with 10 ms/min of speeds, and sizing thickness is extremely after drying
0.63mm；
2. step 1. treated high-elastic non-woven fabric is plated wheel by the group front of storage cloth holder, pressing temperature is 115 DEG C,
Speed 9m/min, after pressing, non-woven fabrics passes through the impregnating groove progress starching added with high-elastic impregnation slurry, using coating after starching
Platform after being wiped off extra high-elastic impregnation material with soft scraper, forms first coating；The high-elastic impregnation slurry coating, which pays to measure, is
0.42kg/y；The high-elastic impregnation slurry is that highly-elastic urethane is impregnated with portions of resin dimethylformamide: tear-proof auxiliary agent: yin
Ionic surface active agent: water-fast enzymolysis auxiliary agent: color by 100: 200: 15: 2: 1: 15 weight ratio mixing at normal temperature with
The mixing speed of 11500r/min is stirred 20 minutes to resin, and color, water-fast enzymolysis auxiliary agent is completely dissolved, and viscosity control exists
300cps, temperature are controlled at 26 DEG C；
3. using high-elastic wet process slurry along soft blade coating in first coating, forming second coating after coating, first is applied
Layer and the control of second coating gap are at 180；The high-elastic wet process slurry coating amount of paying of the high-elastic impregnation slurry is 1.35kg/y；
The high-elastic wet process slurry is by highly-elastic urethane portions of resin dimethylformamide: nonionic surfactant: water-fast enzymolysis auxiliary agent
: color carries out high-speed stirred at normal temperature after mixing by 100: 32: 2: 0.5: 3 weight ratio with the mixing speed of 1500r/min
Color, water-fast enzymolysis auxiliary agent uniform dissolution lowers mixing speed to 350r/min and carries out vacuum defoamation to polyurethane within 35 minutes
90min, viscosity control are controlled in 17000cps, temperature at 26 DEG C；
4. by the dimethyl formyl that mass fraction is 17% is immersed containing the high-elastic non-woven fabric of first coating and second coating
It is solidified in amine aqueous solution, setting time 15min controls to get semi-finished product synthetic leather, setting temperature at 30 DEG C；
5. the semi-finished product synthetic leather gradient after solidification is washed 15 times, dimethylformamide residual concentration drops to 0%, water
70 DEG C again of temperature range control is washed, carrying out eight wheel temperature after washing again is that 130 DEG C of boiling hot rollers are pre- boiling hot, then carries out tentering dry 5 again
Secondary, temperature is controlled at 160-140 DEG C, is put into decorticating mill after dry and is gently swept to surfacing with the sand paper of 180 mesh, then is complete with water
Be put into after soaking heat rub machine carry out heat rub, heat rub machine temperature be 90 DEG C to get synthetic leather；The specific steps of the gradient washing
Are as follows: semi-finished product synthetic leather is first washed 6 times, so that dimethylformamide residual concentration drops to 12% in semi-finished product synthetic leather；
Followed by washing 6 times, so that dimethylformamide residual concentration drops to 6% in semi-finished product synthetic leather；Finally then wash 3
It is secondary, so that dimethylformamide residual concentration drops to 0% in semi-finished product synthetic leather；The dry specific temperature control of the tentering
Be made as: the first secondary control oven temperature is 150 DEG C, and the second to four secondary control oven temperature is 160 DEG C, the 5th secondary control baking oven temperature
Degree is for 140 DEG C to being completely dried.
Embodiment 3
A kind of preparation method of high resiliency synthetic leather, specifically includes the following steps:
1. dense to upper liquid by being impregnated with for 3% polyvinyl alcohol containing immersion liquid with a thickness of the high-elastic non-woven fabric of 0.6mm with mass fraction
Degree is dried up to being pressed dry after 30% through pressure roller, by 30 meters of baking ovens at 170 degree with 10 ms/min of speeds, and sizing thickness is extremely after drying
0.61mm；
2. step 1. treated high-elastic non-woven fabric is plated wheel by the group front of storage cloth holder, pressing temperature is 110 DEG C,
Speed 9m/min, after pressing, non-woven fabrics passes through the impregnating groove progress starching added with high-elastic impregnation slurry, using coating after starching
Platform after being wiped off extra high-elastic impregnation material with soft scraper, forms first coating；The high-elastic impregnation slurry coating, which pays to measure, is
0.4kg/y；The high-elastic impregnation slurry be by highly-elastic urethane be impregnated with portions of resin dimethylformamide: tear-proof auxiliary agent: yin from
Sub- surfactant: water-fast enzymolysis auxiliary agent: color is mixed by 100: 200: 15: 2: 1: 15 weight ratio at normal temperature with 1300r/
The mixing speed of min is stirred 18 minutes to resin, and color, water-fast enzymolysis auxiliary agent is completely dissolved, and viscosity control is in 250cps, temperature
Degree control is at 26 DEG C；
3. using high-elastic wet process slurry along soft blade coating in first coating, forming second coating after coating, first is applied
Layer and the control of second coating gap are at 175；The high-elastic wet process slurry coating amount of paying of the high-elastic impregnation slurry is 1.3kg/y；
The high-elastic wet process slurry is by highly-elastic urethane portions of resin dimethylformamide: nonionic surfactant: water-fast enzymolysis auxiliary agent
: color carries out high-speed stirred at normal temperature after mixing by 100: 32: 2: 0.5: 3 weight ratio with the mixing speed of 1300r/min
Color, water-fast enzymolysis auxiliary agent uniform dissolution lowers mixing speed to 300r/min and carries out vacuum defoamation to polyurethane within 32 minutes
90min, viscosity control are controlled in 16500cps, temperature at 26 DEG C；
4. by the dimethyl formyl that mass fraction is 25% is immersed containing the high-elastic non-woven fabric of first coating and second coating
It carries out coagulating in amine aqueous solution together, setting time 10min controls to get semi-finished product synthetic leather, setting temperature at 28 DEG C；
5. the semi-finished product synthetic leather gradient after solidification is washed 15 times, dimethylformamide residual concentration drops to 0%, water
68 DEG C again of temperature range control is washed, carrying out eight wheel temperature after washing again is that 120 DEG C of boiling hot rollers are pre- boiling hot, then carries out tentering dry 5 again
Secondary, temperature is controlled at 160-140 DEG C, is put into decorticating mill after dry and is gently swept to surfacing with the sand paper of 180 mesh, then is complete with water
Be put into after soaking heat rub machine carry out heat rub, heat rub machine temperature be 90 DEG C to get synthetic leather；The specific steps of the gradient washing
Are as follows: semi-finished product synthetic leather is first washed 6 times, so that dimethylformamide residual concentration drops to 18% in semi-finished product synthetic leather；
Followed by washing 6 times, so that dimethylformamide residual concentration drops to 8% in semi-finished product synthetic leather；Finally then wash 3
It is secondary, so that dimethylformamide residual concentration drops to 0% in semi-finished product synthetic leather；The dry specific temperature control of the tentering
Be made as: the first secondary control oven temperature is 150 DEG C, and the second to four secondary control oven temperature is 160 DEG C, the 5th secondary control baking oven temperature
Degree is for 140 DEG C to being completely dried.
The comparison of the various performances of high resiliency synthetic leather and traditional non-woven cloth PU synthetic leather prepared by the present invention, the results are shown in Table
1
1. calculating synthetic leather by bearing maximum power in analytical unit product according to QB 4689.5-1984 standard
Tensile strength；And it is obtained from starting to be stretched to the ratio of the length and raw footage extended when being pulled off by synthetic leather
Elongation at break.
2. so that grain is cracked and remove from office the intensity that body ruptures by measurement according to QB 4689.7-1984 standard,
3. obtaining the tearing strength of synthetic leather according to the tear edge of QB 4689.6-1984 standard test unit thickness.
4. go out its water vapour amount penetrated within the unit area time according to GB/T 4689.22-1996 standard test,
Its result is with mg. (10cm2.24h)-1Metering.
1 two kinds of synthesising leather performances of table compare
As shown in Table 1, each performance for the high resiliency synthetic leather that prepared by the embodiment of the present invention 1, embodiment 2 and embodiment 3
It can achieve synthetic leather professional standard, various performances significantly improve compared with traditional non-woven cloth PU synthetic leather.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field
For art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, made any to repair
Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (5)
1. a kind of preparation method of high resiliency synthetic leather, which is characterized in that specifically includes the following steps:
It is taken turns 1. high-elastic non-woven fabric is plated by the group front of storage cloth holder, pressing temperature is 105-115 DEG C, speed 9m/min, is scalded
After flat, non-woven fabrics, which passes through, carries out starching added with the high-elastic impregnating groove for being impregnated with slurry, will with soft scraper using coating cloth deck after starching
After extra high-elastic impregnation material is wiped off, first coating is formed；The high-elastic impregnation slurry coating amount of paying is 0.38-0.42kg/
y；
2. high-elastic wet process slurry is used along soft blade coating in first coating, forming second coating after coating, first coating and
Second coating gap is controlled at 170-180；The high-elastic wet process slurry coating amount of paying of the high-elastic impregnation slurry is 1.25-
1.35kg/y；
3. by the dimethylformamide that mass fraction is 15-25% is immersed containing the high-elastic non-woven fabric of first coating and second coating
It is solidified in solution, setting time 8-15min controls to get semi-finished product synthetic leather, setting temperature at 26-30 DEG C；
4. the semi-finished product synthetic leather gradient after solidification is washed 15 times, dimethylformamide residual concentration drops to 0%, washing temperature
65-70 DEG C again of scope control of degree, carrying out eight wheel temperature after washing again is that 110-130 DEG C of boiling hot roller is pre- boiling hot, and it is dry then to carry out tentering again
Dry 5 times, temperature is controlled at 160-140 DEG C, is put into decorticating mill after dry and is gently swept to surfacing with the sand paper of 180 mesh, then uses water
Be put into after soaking completely heat rub machine carry out heat rub, heat rub machine temperature be 90 DEG C to get synthetic leather；
The high-elastic impregnation slurry is that highly-elastic urethane is impregnated with portions of resin dimethylformamide: tear-proof auxiliary agent: anion table
Face activating agent: water-fast enzymolysis auxiliary agent: color is mixed by 100: 200: 15: 2: 1: 15 weight ratio at normal temperature with 1000-1500r/
The mixing speed of min is stirred 15-20 minutes to resin, and color, water-fast enzymolysis auxiliary agent is completely dissolved, and viscosity is controlled in 200-
300cps, temperature are controlled at 26 DEG C；
The high-elastic wet process slurry is by highly-elastic urethane portions of resin dimethylformamide: nonionic surfactant: hydrolysis
Auxiliary agent: color is carried out at normal temperature with the mixing speed of 1000-1500r/min after mixing by 100: 32: 2: 0.5: 3 weight ratio
High-speed stirred 30-35 minutes to polyurethane, color, water-fast enzymolysis auxiliary agent uniform dissolution lowers mixing speed to 250-350r/min
Vacuum defoamation 90min is carried out, viscosity control is controlled in 16000cps-17000cps, temperature at 26 DEG C.
2. a kind of preparation method of high resiliency synthetic leather according to claim 1, which is characterized in that the high-elastic nonwoven
Cloth thickness control is in 0.58-0.62mm.
3. a kind of preparation method of high resiliency synthetic leather according to claim 1, which is characterized in that the high-elastic nonwoven
Cloth is first impregnated with before being coated with high-elastic impregnation slurry with mass fraction for 3% poly-vinyl alcohol solution, concrete operation method are as follows: will
High-elastic non-woven fabric press dry after impregnation board is impregnated with what is prepared containing immersion liquid through pressure roller, makes the polyvinyl alcohol concentration of upper liquid containing immersion liquid
It up to 30%, is dried by 30 meters of baking ovens at 170 degree with 10 ms/min of speeds, thickness of being formed after drying is to 0.55-
0.65mm。
4. a kind of preparation method of high resiliency synthetic leather according to claim 1, which is characterized in that the gradient washing
Specific steps are as follows: semi-finished product synthetic leather is first washed 6 times, so that in semi-finished product synthetic leather under dimethylformamide residual concentration
It is down to 10-20%；Followed by washing 6 times, so that dimethylformamide residual concentration drops to 5-10% in semi-finished product synthetic leather；
It finally then washes 3 times, so that dimethylformamide residual concentration drops to 0% in semi-finished product synthetic leather.
5. a kind of preparation method of high resiliency synthetic leather according to claim 1, which is characterized in that the tentering is dry
Specific temperature control are as follows: the first secondary control oven temperature is 150 DEG C, and the second to four secondary control oven temperature is 160 DEG C, the 5th
Secondary control oven temperature is 140 DEG C to being completely dried.
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| CN111519444A (en) * | 2020-05-07 | 2020-08-11 | 吕兴鹏 | Hydrolysis-resistant PU synthetic leather and production method thereof |
| CN117148809A (en) * | 2023-10-31 | 2023-12-01 | 南通中奥车用新材料有限公司 | Process optimization method and system for artificial leather production equipment |
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| CN104631137A (en) * | 2015-03-06 | 2015-05-20 | 安安(中国)有限公司 | Production method of polyurethane synthetic leather |
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| CN102619095A (en) * | 2011-01-27 | 2012-08-01 | 吉林润泽超细纤维科技有限公司 | Manufacturing method of environmentally-friendly flame-retardant bunched sea-island chamois leather |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111519444A (en) * | 2020-05-07 | 2020-08-11 | 吕兴鹏 | Hydrolysis-resistant PU synthetic leather and production method thereof |
| CN117148809A (en) * | 2023-10-31 | 2023-12-01 | 南通中奥车用新材料有限公司 | Process optimization method and system for artificial leather production equipment |
| CN117148809B (en) * | 2023-10-31 | 2023-12-29 | 南通中奥车用新材料有限公司 | Process optimization method and system for artificial leather production equipment |
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Application publication date: 20191105 |