CN105297449B - Agent and preparation method at a kind of artificial leather, use for synthetic leather aqueous wear-resistant scratch resistance table - Google Patents
Agent and preparation method at a kind of artificial leather, use for synthetic leather aqueous wear-resistant scratch resistance table Download PDFInfo
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Abstract
The invention discloses agent at a kind of artificial leather, use for synthetic leather aqueous wear-resistant, scratch resistance table, it is made up of the raw material of following weight fraction：0.03 0.06 parts of 50 60 parts of aqueous polyurethane, 30 40 parts of water, Graphene or graphene oxide modifying agent, 26 parts of flatting silica, 0.5 1 parts of organosilicon levelling agent, 1 1.5 parts of organo-silicon coupling agent, 2.0 5.0 parts of feel modifying agent, 0.5 1.0 parts of water-based thickener.The present invention is beneficial to the characteristics such as lubricity, high transparency, electric conductivity, antibacterial and mouldproof, the anti-UV of Graphene, the performance such as artificial leather, the wear-resisting of synthetic leather coating, scratch resistance, antistatic, anti-aging and self-cleaning is greatly improved, so as to lift artificial leather, the grade of synthetic leather and competitiveness in the international market.In addition, the present invention substitutes traditional solvent borne polyurethane with aqueous polyurethane, organic solvent resource is saved, organic contamination has been eliminated from source, eliminated safe hidden trouble, improved labourer's employment environment.VOC content is less than 5 mg/kg in resultant Leather（Leather）, ecological, environmental protective meets European Union's ecological synthetic leather requirement.
Description
Technical field
The present invention relates to a kind of preparation method of agent at environment-friendly artificial leather, use for synthetic leather table, belong to fine chemistry industry
Manufacture field.
Background technology
China is synthetic leather production and consumption big country of the world.2014, China's artificial leather, synthetic leather yield accounted for the world
76%, scale above enterprise artificial leather synthetic leather yield up to 314.26 ten thousand tons, 62.8 hundred million square meter altogether.
In artificial leather, the manufacturing process of synthetic leather, there is one critically important operation to be referred to as surface treatment, material used
Referred to as agent at table（That is surface conditioning agent）.Agent is general at table is formed by polyurethane and special auxiliary agent compounding, mainly assign artificial leather,
It is synthetic leather special surface effect and bandwagon effect, such as bloom, delustring, wear-resisting, scratch resistance, waterproof, antifouling.Wherein, wear-resisting,
Scratch resistance is artificial leather, the very important physical index of synthetic leather, most people's fabricate-leather, synthetic leather are removed from office including automobile, seat is removed from office,
Sofa artificial leather, bag leather, ball leather, luggage leather etc. propose very high request（Wear-resisting experimental method >=5000 time of Taber）.
In traditional artificial leather, synthetic leather manufacturing process, in order to improve the wear-resisting scratch resistance of coating, the agent generally at table
In slurry or addition talcum powder, the inorganic filler such as silica, or the organic filler such as addition wax, stearic acid, or improve polyurethane
The hardness of film（Modulus）To improve wear-resisting, the scratch resistance of coating, but the addition of the inorganic filler such as talcum powder, silica can make into
Leather becomes thick and heavy, reduces the slim and graceful sense and elegant sense of finished leather；Adding the organic fillers such as wax, stearic acid can cause in the case of hot pressing
Coating adhesion and the change of glossiness；Improving the hardness of polyurethane film can cause finished leather feel partially hard and coating cold resistance and low
Warm flexibility declines, and coating there is also cracking when serious.Therefore, high-efficiency abrasion-proof, scratch resistance additive how is developed significantly to carry
While rising the wear-resisting scratch resistance of artificial leather, synthetic leather coating, and the reduction of other physical property of coating is not caused, it appears particularly important.
In addition, traditional synthetic leather industry is also faced with the severe challenge of environmental pollution.Synthetic leather production line can be produced
The substantial amounts of organic exhaust gas of life, these pollutants mostly come from the unordered discharge of organic solvent in solvent type resin, these solvents
There is dimethylformamide（DMF）, toluene, ethyl acetate, butyl acetate, butanone and dimethoxym ethane etc..According to measuring and calculating, every 1 synthesis
Leather production line, annual 10.2 tons of DMF of discharge（Under having a recovering state）, it is annual to discharge 50.8 tons of toluene, butanone is discharged every year
50.80 tons, 24.5 tons of acetate esters solvents.Therefore, artificial leather, synthetic leather industry are faced with environmental improvement high cost, money for a long time
Source wastes the serious, severe challenge of environmental pollution, how to develop water-base resin and substitutes traditional solvent type resin, is to maintain artificial
Leather, the key of synthetic leather industry sustainable development.
In recent years, with the improvement of people ' s living standards, people propose requirement higher to the ecological of leather goods.
The developed countries such as America and Europe, propose to artificial leather, synthetic leather particularly house ornamentation interior decoration leather, interior leather for automobiles, clothing leather, furniture leather etc.
Zero formaldehyde, zero azo, the requirement of zero heavy metal, while requiring VOC（Volatile organic solvent）Content≤5 mg/Kg (leather).
Therefore, traditional synthetic leather manufacturing technology based on Solvent Resin is cannot to meet ecological synthetic leather requirement.
The content of the invention
The purpose of the present invention is directed to the deficiencies in the prior art and provides artificial leather, use for synthetic leather aqueous wear-resistant scratch resistance table
Place agent and preparation method.Its feature is one is lubricity, high transparency, electric conductivity, antibacterial and mouldproof, anti-UV beneficial to Graphene
Etc. characteristic, the performance such as artificial leather, the wear-resisting of synthetic leather coating, scratch resistance, antistatic, anti-aging and self-cleaning is greatly improved, so as to carry
Rise artificial leather, the grade of synthetic leather and competitiveness in the international market；The second is poly- instead of traditional solvent-borne type using aqueous polyurethane
Urethane eliminates organic solvent pollution as resin at table from source, saves organic solvent resource, eliminates safe hidden trouble, and improves just
Dealer's working environment, improves ecological grades and the competitiveness in the international market of synthetic leather.
The purpose of the present invention is realized by following technical measures, wherein described raw material number is unless otherwise indicated, attached most importance to
Amount number.
Agent and preparation method are implemented to comprise the following steps at a kind of artificial leather, use for synthetic leather aqueous wear-resistant scratch resistance table：
（1）The pretreatment of Graphene or graphene oxide anti-wear agent：
1. Graphene is soaked with propylene glycol methyl ether acetate, adds the wetting agent of Graphene weight portion 1%, ultrasonic wavelength-division
1-2 h are dissipated, it is standby；
2. graphene oxide is soaked with dimethylformamide, adds the modifying agent of graphene oxide weight portion 5%, ultrasound
Wavelength-division dissipates 1-2 h, standby；
（2）The preparation of waterborne surface treatment agent：
Aqueous polyurethane 50-60 parts of fraction by weight, water 30-40 parts, the Graphene or graphene oxide of pretreatment are resistance to
Grinding agent 0.03-0.06 parts（Solid part meter）, flatting silica 0-6 parts, organosilicon levelling agent 0.5-1.0 parts, water cross-linking agent 1.0-1.5
Part, 2.0-5.0 parts of feel modifying agent, water-based thickener 0.5-1.0 parts be well mixed, at 20-30 DEG C react 2-3 h, be made into
Viscosity is 1000-2000 mPa.s slurries, ground, and filtering obtains waterborne surface treatment agent.
With aqueous polyurethane it is highlight type, middle light type and/or extinction type, modulus 50-80 Mpa, solid content 30-35% at table
Aliphatic and/or aromatic urethane at least one.
Anti-wear agent is the one kind in Graphene or graphene oxide.
The wetting agent of Graphene is at least one in isopropanol and OP-10；The modifying agent of graphene oxide be KH560 and
At least one in KH550.
Water cross-linking agent is at least one in polycarbodiimide, polyaziridine and/or end-sealed type water-based isocyanate.
Water-based thickener is at least one in nonionic polyurethane thickener and carbomer thickeners.
Feel modifying agent is birdsed of the same feather flock together in compound, oil/wax compound and/or organic fluoride class polymer at least for waterborne organic silicon
It is a kind of.
At table provided by the present invention agent be adapted to artificial leather, synthetic leather include clothing leather, luggage leather, upper leather, sofa artificial leather,
The manufacture of multiple kinds such as house ornamentation interior decoration leather and/or automobile leather, finished leather feel, gloss are adjustable, wear-resisting scratch resistance, and VOC content is low in leather
In 5 mg/kg（Leather）, also with good antibacterial and mouldproof, the performance such as ageing-resistant, antistatic, other performance reaches or is better than
Professional standard.
The present invention has following innovative point：
（1）The present invention is beneficial to the lubricity of Graphene or graphene oxide, high transparency, electric conductivity, antibacterial and mouldproof, anti-
The characteristics such as UV, greatly improve artificial leather, the wear-resisting of synthetic leather coating, scratch resistance and the performance such as antistatic, anti-aging and self-cleaning,
Rebuild traditional industry with new materials such as Graphenes, the physical property of artificial leather, synthetic leather is substantially improved, its innovation is obvious；
（2）By wet with solvent Graphene or graphene oxide, Graphene and oxidation stone are controlled by ultrasonic wave dispersion
The granularity of black alkene, it is ensured that the two is dispersed in aqueous polyurethane system；Modified dose of graphene oxide (KH550, KH560)
The modified siloxane group for introducing activity, the hydroxyl that siloxanes hydrolysis is produced can interact with rear crosslinking agents, realize stone
The grafting of black alkene and polyurethane, its technology has novelty；
（3）The addition of Graphene or graphene oxide is between 0.03-0.06% in the present invention（Agent total amount meter at table）,
Addition is few, does not result in negative effect to coating other physical property such as gloss, cold resistance, but greatly improve wear-resisting scratch resistance simultaneously
Property, and to the preferable antibacterial and mouldproof of precoat, electric conductivity, resistance to bond and the performance such as ageing-resistant,
（4）Solvent borne polyurethane is substituted using aqueous polyurethane and eliminates the environmental pollution that organic solvent is caused from source, section
A large amount of organic solvent resources are saved, disaster hidden-trouble is eliminated, labourer's employment environment is significantly improved, VOC content in finished leather is reduced, had
Beneficial to the sustainable development of industry.
Specific embodiment
The present invention is specifically described below by embodiment.Be necessary it is pointed out here that to be that the present embodiment is served only for right
The present invention is further described, it is impossible to be interpreted as limiting the scope of the invention, and the person skilled in the art in the field can
Some nonessential modifications and adaptations are made with according to the content of foregoing invention.
In addition, and also what deserves to be explained is, number used by following embodiment is weight portion.
Embodiment 1
（1）The pretreatment of Graphene anti-wear agent：
Graphene is soaked with propylene glycol methyl ether acetate, the isopropanol of Graphene weight portion 1%, ultrasonic wave dispersion is added
1-2 h, it is standby；
（2）The preparation of waterborne surface treatment agent：
50 parts of the aliphatic delustring aqueous polyurethane of the Mpa of fraction modulus amount 50 by weight, solid content 30%, 40 parts of water is pressed
（1）0.03 part of the Graphene anti-wear agent of pretreatment（Solid part meter）, 2.0 parts of flatting silica, 0.5 part of organosilicon levelling agent, aziridine
1.0 parts of crosslinking agent, 2.0 parts of organic silicon hand feeling modifying agent, 0.5 part of aqueous polyurethane thickener are well mixed, at 20-30 DEG C
2 h, regulation viscosity to 1000 mPa.s or so are reacted, ground, filtering obtains waterborne surface treatment agent.
From the relatively low aliphatic water-based polyurethane of modulus, modified graphene addition is relatively low, coating for agent at the table
It is soft, there are preferable wear-resisting, scratch resistance, antibacterial and mouldproof and yellowing resistance higher and atomized surface effect, VOC content is low
In 5 mg/kg (leather), it is adapted to make the surface treatment of clothes, sofa, shole leather etc..
Embodiment 2
（1）The pretreatment of graphene oxide anti-wear agent：
Graphene oxide is soaked with dimethylformamide, the KH560 of graphene oxide weight portion 5%, ultrasonic wavelength-division is added
1-2 h are dissipated, it is standby；
（2）The preparation of waterborne surface treatment agent：
60 parts of the delustring aromatic waterborne polyurethane of the Mpa of fraction modulus amount 80 by weight, solid content 35%, 40 parts of water, warp
（1）0.06 part of the graphene oxide anti-wear agent of pretreatment（Solid part meter）, 6 parts of flatting silica, 1.0 parts of organosilicon levelling agent, end-blocking
1.5 parts of water-based isocyanate crosslinking agent, 5.0 parts of feel modifying agent are well mixed, 0.6 part of aqueous polyurethane thickener, aqueous third
0.4 part of olefin(e) acid polymer viscosifier is well mixed, and in 3 h are reacted at 20-30 DEG C, regulation viscosity to 2000 mPa.s slurries is passed through
Grinding, filtering obtains waterborne surface treatment agent.
From modulus aromatic series delustring water-based polyurethane higher, modified graphene addition is higher, coating for agent at the table
With good wear-resisting, scratch resistance and cloudy surface high（Delustring）Effect, VOC content be less than 5 mg/kg (leather), be adapted to automobile remove from office,
The wear-resisting, scratch resistances such as seat leather, sofa artificial leather and mist degree requirement artificial leather higher, the surface treatment of synthetic leather.
Embodiment 3
（1）The pretreatment of Graphene and graphene oxide anti-wear agent：
Graphene is soaked with propylene glycol methyl ether acetate, the OP-10 of Graphene weight portion 1%, ultrasonic wave dispersion 1- is added
2 h, it is standby；Graphene oxide is soaked with dimethylformamide, the KH550 of graphene oxide weight portion 5%, ultrasonic wave is added
Disperse 1-2 h, it is standby；
（2）The preparation of waterborne surface treatment agent：
The Mpa of fraction modulus amount 60 by weight, admittedly containing 35% aliphatic in 55 parts of light aqueous polyurethane, 35 parts of water, warp（1）
0.02 part of the graphene oxide anti-wear agent of pretreatment, 0.3 part of Graphene（Solid part meter）, 0.7 part of organosilicon levelling agent, carbonization two
1.2 parts of imines crosslinking agent, oily 3 parts of wax feel modifying agent, 0.6 part of aqueous polyurethane thickener are well mixed, at 20-30 DEG C
Reaction 2-3 h, regulation viscosity is ground to 1500 mPa.s slurries, and filtering obtains waterborne surface treatment agent.
Resin uses medium modulus resin at the table, without organosilicon flatting silica, can assign coating preferably wear-resisting, resistance to
Scraping property, flexibility and antibacterial and mouldproof, glossiness nature, VOC content are less than 5 mg/kg (leather), are adapted to do upper leather, boot-shoe leather
Deng.
Embodiment 4
（1）The pretreatment of graphene oxide anti-wear agent：
Graphene oxide is soaked with dimethylformamide, the KH560 of graphene oxide weight portion 5%, ultrasonic wavelength-division is added
1-2 h are dissipated, it is standby；
（2）The preparation of waterborne surface treatment agent：
55 parts of the highlight water-based polyurethane of aliphatic of the Mpa of fraction modulus amount 70 by weight, solid content 35%, 35 parts of water, warp
（1）0.05 part of the graphene oxide anti-wear agent of pretreatment（Solid part meter）, 1.0 parts of organosilicon levelling agent, aziridine crosslinker 1.5
Part, 4.0 parts of Organic fluoride feel modifying agent are well mixed, and 0.8 part of aqueous polyurethane thickener is well mixed, at 20-30 DEG C
2.5 h are reacted, regulation viscosity is ground to 1500 mPa.s slurries, and filtering obtains waterborne surface treatment agent.
Agent is from bloom, modulus aliphatic race water-based polyurethane higher and Organic fluoride, modified graphene addition at the table
Amount is higher, and coating has excellent wear-resisting, scratch resistance, and yellowing resistance, water proof anti-soil and glossiness high, VOC content are less than 5
Mg/kg (leather), is adapted to the surface treatment of bloom luggage leather, upper leather, seat leather, house ornamentation interior decoration leather etc..
Claims (6)
1. at a kind of artificial leather, use for synthetic leather aqueous wear-resistant scratch resistance table agent preparation method, it is characterised in that comprise the following steps：
（1）The pretreatment of Graphene or graphene oxide anti-wear agent：
1. Graphene is soaked with propylene glycol methyl ether acetate, adds the isopropanol or OP-10 wetting agents of Graphene weight portion 1%,
Ultrasonic wave disperses 1-2 h, standby；
2. graphene oxide is soaked with dimethylformamide, adds the KH560 of graphene oxide weight portion 1%（γ-shrink is sweet
Oily ether oxygen propyl trimethoxy silicane）Or KH550（Gamma-aminopropyl-triethoxy-silane）Modifying agent, ultrasonic wave dispersion 1-2 h,
It is standby；
（2）The preparation of waterborne surface treatment agent：
It is aqueous by weight polyurethane 50-60 parts, water 30-40 parts, the Graphene or graphene oxide anti-wear agent of pretreatment
0.03-0.06 parts, flatting silica 0-6 parts, organosilicon levelling agent 0.5-1.0 parts, water cross-linking agent 1.0-1.5 parts, feel modifying agent
2-5 parts, water-based thickener 0.5-1.0 parts is well mixed, and in 2-3 h are reacted at 20-30 DEG C, is made into viscosity for 1000-2000
MPas slurries, ground, filtering, obtain waterborne surface treatment agent.
2. as claimed in claim 1 a kind of artificial leather, at use for synthetic leather aqueous wear-resistant scratch resistance table agent preparation method, its feature exists
With the aliphatic that aqueous polyurethane is highlight type, middle light type or extinction type, modulus 50-80 MPa, solid content 30-35% at table
Or at least one in aromatic urethane.
3. as claimed in claim 1 a kind of artificial leather, at use for synthetic leather aqueous wear-resistant scratch resistance table agent preparation method, its feature exists
At least one in water cross-linking agent is polycarbodiimide, polyaziridine, epoxy resin or end-sealed type water-based isocyanate.
4. as claimed in claim 1 a kind of artificial leather, at use for synthetic leather aqueous wear-resistant scratch resistance table agent preparation method, its feature exists
At least one in water-based thickener is nonionic polyurethane thickener or carbomer thickeners.
5. as claimed in claim 1 a kind of artificial leather, at use for synthetic leather aqueous wear-resistant scratch resistance table agent preparation method, its feature exists
At least one in feel modifying agent birdss of the same feather flock together compound, oil/wax compound or organic fluoride class polymer for waterborne organic silicon.
6. at a kind of artificial leather as claimed in claim 1, use for synthetic leather aqueous wear-resistant scratch resistance table agent preparation method, its feature
It is that the artificial leather, synthetic leather are clothing leather, luggage leather, upper leather, sofa artificial leather, house ornamentation interior decoration leather and the automobile multiple product of leather
Kind.
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| CN103669021B (en) * | 2013-12-27 | 2015-08-19 | 四川大学 | A kind of low energy consumption ecological artificial leather manufacture method |
| CN104164208B (en) * | 2014-08-13 | 2016-05-04 | 东华大学 | A kind of preparation method of Graphene/polyimides composite adhesive |
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