CN102168384B - Synthetic leather capable of releasing negative ions and preparation method of the synthetic leather - Google Patents
Synthetic leather capable of releasing negative ions and preparation method of the synthetic leather Download PDFInfo
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- CN102168384B CN102168384B CN 201010609339 CN201010609339A CN102168384B CN 102168384 B CN102168384 B CN 102168384B CN 201010609339 CN201010609339 CN 201010609339 CN 201010609339 A CN201010609339 A CN 201010609339A CN 102168384 B CN102168384 B CN 102168384B
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Abstract
The invention relates to synthetic leather capable of releasing negative ions and a preparation method of the synthetic leather. The synthetic leather includes a matrix layer, a polyurethane inner coating layer and a polyurethane surface layer, wherein the matrix layer consists of PA6 superfine fibers; the polyurethane inner coating layer is formed by being dipped in polyurethane solution through a wet method and solidified on the surface of the matrix layer; the polyurethane surface layer is prepared from a polyurethane sizing agent through a dry method and the polyurethane surface layer is adhered with the polyurethane inner coating layer through polyurethane adhesive resin; and the PA6 superfine fibers contain nanometer tourmaline powder. The method comprises the following steps: manufacturing sea-island fiber, processing non-woven, sizing and planishing, steeping using wet process, extracting with decrement, drying and sizing, mellowing, and shifting membrane in a dry method. The synthetic leather has the function of releasing negative ions and is especially suitable for producing high-grade synthetic leather such as automobile inner decoration leather with a health-care function, and the like.
Description
Technical field
The present invention relates to a kind of synthetic leather and manufacture method thereof, more particularly, the present invention relates to a kind of synthetic leather and manufacture method thereof that can anion releasing, this synthetic leather especially is fit to make interior leather for automobiles.
Background technology
Along with the fast development of Domestic Automotive Industry, the demand of interior leather for automobiles is also increasing year by year.Leather is the first-selection of high-grade interior leather for automobiles always, but is subjected to the day by day deficient and more and more high environmental requirement of corium resource, and corium automobile leather is not the fashion trend of future automobile interior decoration leather.Artificial synthetic leather will play a significant role at the future automobile interior decoration leather, because the domestic automobile industry starts to walk soft evening, Trimming Design for Motor Vehicle and developing material also relatively lag behind, and the main PVC artificial leather of using can't satisfy people to the pursuit of luxurious sense in the car in automotive trim.Superfine fiber chemical leather is the most high-grade product among the present artificial tanning, and the fine fiber that uses during it is produced, the non-weaving cloth that acupuncture becomes three-dimensional net structure etc. provide its performance to surmount the condition of natural leather.In conjunction with the polyurethane wet impregnation technology that possesses open-celled structure, the compound process technology of making face, give full play to the large specific area of superfine fibre and water imbibition function, make superfine fiber chemical leather have the intrinsic moisture absorption feature of natural leather of the ultra-fine collagenous fibres of pencil.Thereby realized that microstructure internally to aspects such as appearance tactile impression, can compare favourably with high-grade natural leather.The aspects such as its mechanical and physical character, chemical resistance, quality homogeneity, large production and processing adaptability, waterproof, mildew-resistant sex change, color variation, stylishness all are better than natural leather simultaneously, and superfine fiber chemical leather has become the best substitute of leather.
Superfine fibre can be made by islands-in-sea type fibre, islands-in-sea type fibre is with a kind of polymer dispersed formed composite fibre in another kind of polymer, because each constituent content of polymer and viscosity there are differences, irregular sea-island the type that is shaped as in composite fibre cross section, decentralized photo is that the polymer dispersed of island phase is in the marine facies polymer in continuous phase, utilize solvent to dissolve the marine facies component, just can obtain the superfine fibre that the island consists of mutually.
Tourmaline is the general name of tourmaline family mineral, and it is a kind of natural gemstone level ore.Tourmaline has permanent piezo-electric effect and pyroelectric effect because of its unique structure, even small temperature or pressure occur to be changed, also can cause between the tourmaline crystal to produce potential difference, and lure that airborne hydrone or oxygen molecule ionization occur and generate corresponding anion into.Anion is called air vitamin or auxin, its health to human body, human body is kept the energetic great effect that has, utilize anion to purify air, this is because airborne harmful components are mostly positively charged, therefore anion very easily with air in small contamination particle adsorb mutually and the ground that sinks, thereby so that air cleaning; In like manner, utilize anion can also play pernicious gases such as effectively dispelling ammonia, formaldehyde, benzene and the peculiar smell such as human body stink with perspiration, smoke, and effectively floating dust in the decontamination chamber, kill bacteria, in and the effect of electromagnetic wave and positive static, activation organism.In addition, tourmaline can also be launched and is called as far infrareds " light of life ", wavelength 4～14 μ m, itself and human body far infrared wave appearance coupling, thereby can promote blood circulation of human body.
Automobile has become instrument indispensable in the people life, and people also become more and more longer the time in car, and the limited space in the car, and the circulation of air degree is relatively poor, so the safety of interior space environment, health comfortablely becomes more important.If can produce the nano-tourmaline powder of anion adds in the interior leather for automobiles, produce can negative ion-releasing function interior leather for automobiles, bring revolutionary breakthrough will for so the lifting of environmental quality in the automobile, be seen in report and not yet see this technical scheme in the present prior art.
Summary of the invention
The purpose of this invention is to provide a kind of synthetic leather that can anion releasing, to solve the above-mentioned problems in the prior art, utilize the interior leather for automobiles of this synthetic leather manufacturing of the present invention to have the function of anion releasing.
Another object of the present invention provides a kind of manufacture method of above-mentioned synthetic leather.
A kind of synthetic leather that can anion releasing of the present invention, comprise base layer, polyurethane inner coating and polyurethane skin layer, described base layer is comprised of the PA6 superfine fibre, described polyurethane inner coating is by the polyurethane solutions wet impregnation and freeze solidly on the surface formation of described base layer, described polyurethane skin layer is made by the dry method polyurethane slurry, and bonding by viscoelastic polyurethane resin and described polyurethane inner coating, described PA6 superfine fibre contains the nano-tourmaline powder.
In above-mentioned synthetic leather, the mass ratio of the PA6 in described nano-tourmaline powder and the described PA6 superfine fibre is 1:100～4:100.
In above-mentioned synthetic leather, the particle size range of described nano-tourmaline powder is 50～100 nanometers.
In above-mentioned synthetic leather, the polyurethane solutions proportioning that forms described polyurethane inner coating is as follows: by weight, and 100 parts of polyurethane resins, 25～45 parts of dimethyl formamides, 0.5～2 part of auxiliary agent, 3～6 parts in nano-tourmaline powder, 0～10 part of pigment.
In above-mentioned synthetic leather, the prescription of described dry method polyurethane slurry is as follows: by weight, and top layer: 100 parts of polyurethane resins, 60 parts of solvents, 1～5 part in nano-tourmaline powder, 0.5～2 part of auxiliary agent, 0～10 part of pigment; Middle level: 100 parts of polyurethane resins, 60 parts of solvents, 0.5～2 part of auxiliary agent, 1～5 part in nano-tourmaline powder, 0～10 part of pigment; Tack coat: 100 parts of polyurethane resins, 40 parts of solvents, 0.5～2 part of auxiliary agent, 1～5 part in nano-tourmaline powder.
The manufacture method of synthetic leather of the present invention, it may further comprise the steps successively:
A, manufacturing islands-in-sea type fibre:
A, PA6 section and nano-tourmaline powder are extruded in constant weight ratio mixed melting, made the PA6 masterbatch that contains the nano-tourmaline powder;
B, this PA6 masterbatch and PE and PA6 are mixed according to the constant weight ratio;
C, mixed material is sent into screw extruder carry out the melt blending spinning;
Machine crimp, drying and shaping are then carried out in d, drawing-off, and the recycling cutting machine cuts off by different size;
B, non-weaving cloth processing: the acupuncture behind carding of this islands-in-sea type fibre is become three-dimensional cross-linked non-weaving cloth;
C, typing flatten: this non-weaving cloth is eliminated stress through heat shrink, be processed into the pressure roller that can set the gap again have certain thickness, density and powerful pressing cloth;
D, wet impregnation: should pressing cloth wet polyurethane solution impregnation, then solidify, wash, form a polyurethane inner coating on described pressing cloth surface, by different condition control, obtain having the synthetic leather base cloth in minute aperture or huge hole;
E, extract decrement out: utilize hot toluene that this base cloth is carried out the continuous extraction of convection current multistage, the polyethylene in its inner islands-in-sea type fibre is removed and be pencil fine structure, extract out after the decrement treatment again succeeded by multiple tracks and wash to clean the toluene on the base cloth after this decrement;
F, dryness finalization: the base cloth after will washing in setting machine through the moulding of high temperature drying heat fixation;
G, soft treatment: this fixed-type base cloth is carried out soft treatment with containing a certain proportion of softener solution;
H, dry method are moved film: equably be coated on release liners on certain interval deployed dry method polyurethane slurry, solvent evaporates forms polyurethane skin layer after dry, then with the viscoelastic polyurethane resin base cloth and this polyurethane skin layer that step G forms is bonded together, drying is peeled off this release liners after processing again.
In said method, the mass ratio that mixes rear nano-tourmaline powder and PA6 in the b step is preferably 1:100～4:100.
In said method, in a step in the PA6 masterbatch weight of nano-tourmaline powder account for 20%～30%.
In said method, the mass ratio that mixes rear PA6 and PE in the b step is preferably 45:55～70:30.
In said method, the particle size range of nano-tourmaline powder described in the described fiber is 50～100 nanometers.
In said method, the polyurethane solutions prescription described in the D step is as follows: by weight, and 100 parts of polyurethane resins, 25～45 parts of dimethyl formamides, 0.5～2 part of auxiliary agent, 3～6 parts in nano-tourmaline powder, 0～10 part of pigment.
In said method, the prescription of dry method polyurethane slurry is as follows described in the H step: by weight, and top layer: 100 parts of polyurethane resins, 60 parts of solvents, 1～5 part in nano-tourmaline powder, 0.5～2 part of auxiliary agent, 0～10 part of pigment; Middle level: 100 parts of polyurethane resins, 60 parts of solvents, 0.5～2 part of auxiliary agent, 1～5 part in nano-tourmaline powder, 0～10 part of pigment; Tack coat: 100 parts of polyurethane resins, 40 parts of solvents, 0.5～2 part of auxiliary agent, 1～5 part in nano-tourmaline powder.
Synthetic leather of the present invention has the function of anion releasing, therefore with it beneficial effect that can be achieved as follows for the manufacture of interior leather for automobiles:
(1) has the function of permanent anion releasing, can effectively improve environment inside car;
(2) can launch the far infrared (wavelength 4～14 μ m) of the light ＂ that is called as ＂ life, with human body far infrared wave appearance coupling, promote blood circulation of human body;
(3) can effectively dispel the peculiar smell such as human body stink with perspiration, smoke of the pernicious gases such as ammonia, formaldehyde, benzene and Che Nei;
(4) effectively floating dust, kill bacteria in the decontamination chamber purify air;
(5) can in and electromagnetic wave, positive static, play the effect of activation organism.
The specific embodiment
The below will describe in further detail synthetic leather of the present invention and manufacture method thereof by specific embodiment.
Embodiment 1: a kind of manufacture method of synthetic leather that can anion releasing is as follows:
A, 14 parts of (weight portion) PA6 sections are extruded with the nano-tourmaline powder mixed melting that 6 parts of particle diameters are 50 nanometers, make the PA6 masterbatch that contains the nano-tourmaline powder, then with these 3 parts of PA6 tourmaline powder masterbatch and 42 parts of PE sections, 55 parts of PA6 sections are closed evenly, then mixed material is sent into screw extruder carries out the melt blending spinning, formation is take PA6 as the island, PE is the islands-in-sea type fibre long filament in sea, this long filament monofilament linear density is 17～20 dtexs, this long filament is carried out drawing-off under 65 ℃ water-bath, percentage elongation is 3.0～3.5 times, final line density is 5.5～7.0 dtexs, intensity is 3.0 lis more than ox/dtex, then carry out machine crimp, and it cut-out is become the staple fibre of 50 millimeters long;
The processing of B, non-weaving cloth: sea-island staple fiber becomes 420 g/ms of fiber webs that three-dimensional net structure is arranged through mechanical carding, laying, and becoming density by needing machine acupuncture again is 0.24 g/cm non-weaving cloth;
C, typing flatten: non-weaving cloth thermoplastic under 110 ℃ the temperature 5 minutes, after plate through the mechanical compaction roll of fixed interval (FI) and to become the former cloth of processing of 1.45～1.55 millimeters of thickness;
D, wet impregnation: process former cloth and flood through polyurethane resin, maceration extract is by weight ratio: 100 parts of polyurethane resins, and 45 parts of dimethyl formamides, 0.5 part of auxiliary agent is received and is expected 5 parts of tourmaline powders.Former cloth behind the dipping enters solidification liquid again to carry out wet method and solidifies, and forms foam structure, the proportioning of solidification liquid: contain dimethyl formamide concentration and be 32%, the aqueous solution of 35 ℃ of temperature;
E, extract decrement out: the former cloth after wet method is solidified in deweighing machine by 85 ℃ hot toluene with molten the removing of sea component polyethylene in the islands-in-sea type fibre, form the superfine fibre of monofilament linear density below 0.05 dtex, rear under 160 ℃ temperature dryness finalization 2 minutes.Process through containing 2% concentration softener again, increase pliability and the tearing strength of base cloth.One-tenth thickness is 1.10～1.15 millimeters base cloth after dry.Base cloth is after 20% the solution impregnation through phosphorous-nitrogen composite combustion inhibitor concentration, and under 160 ℃ temperature dry 3 minutes, it was about 8% to increase weight, and can guarantee burning velocity≤50mm/min;
F, dry method are moved film: the release liners of selecting the DE90 decorative pattern, top layer proportioning: 100 parts of polyurethane resins, 60 parts of solvents, 1.5 parts of auxiliary agents, 80 ℃ of baking temperatures, time 2.5min. middle level: 100 parts of polyurethane resins, 60 parts of solvents, 3 parts in nano-tourmaline powder, 110 ℃ of baking temperatures, time 3.5min..Tack coat: 100 parts of polyurethane resins, 60 parts of solvents, 1.5 parts of crosslinking agents, 5 parts in nano-tourmaline powder is fitted laminate pressure 0.5 mpa with fire-retardant base cloth, 125 ℃ of baking temperatures, 4 minutes time. peel off release liners after the drying, batch the finished product leather, be cut into 30 meters segment length, the boarding machine that in temperature is 70 ℃ rotates kneading with the vapours heating, makes finished product leather surface detail plentiful.Rub leather behind the line mechanical bundler is gone out 0.2 millimeter open-work with mould after, test package.
Embodiment 2～4
In embodiment 2～4, adopt corresponding parameter among the parameter replacement embodiment 1 shown in the following table, all the other conditions are with embodiment 1;
| Parameter | Embodiment 2 | Embodiment 3 | Embodiment 4 |
| The tourmaline powder particle diameter | 100 nanometers | 75 nanometers | 75 nanometers |
| PA6 tourmaline powder masterbatch | 3 parts | 3.7 part | 6 parts |
| The PE section | 40 parts | 29.7 part | 54 parts |
| The PA6 section | 54 parts | 66.6 part | 40 parts |
| The PA6 colour masterbatch | 3 parts | 0 part | 0 part |
| The long filament monofilament linear density | 20～22 dtexs | 15～18 dtexs | 20～25 dtexs |
| Percentage elongation | 2.8～3.2 times | 3 | 2.8 |
| Final line density | 6.5～7.5 dtexs | 5～6 dtexs | 7～8 dtexs |
| Non-weaving cloth density | 0.26 g/cm | 0.24 g/cm | 0.27 g/cm |
| Setting temperature | 120℃ | 125℃ | 115℃ |
Among the above embodiment, the trade name of PA6 is polyamide fibre 6, and P E is polyethylene.
The above only is illustrative, but not is restricted person.Any spirit and category that does not break away from the present invention, and to its equivalent modifications of carrying out or change, all should be contained in the claim of the present invention.
Claims (7)
- One kind can anion releasing the manufacture method of synthetic leather, it is characterized in that may further comprise the steps in order:A, manufacturing islands-in-sea type fibre:A, PA6 section and nano-tourmaline powder are extruded in constant weight ratio mixed melting, made the PA6 masterbatch that contains the nano-tourmaline powder;B, this PA6 masterbatch and PE and PA6 are mixed according to the constant weight ratio;C, mixed material is sent into screw extruder carry out the melt blending spinning;Machine crimp, drying and shaping are then carried out in d, drawing-off, and the recycling cutting machine cuts off by different size;B, non-weaving cloth processing: the acupuncture behind carding of this islands-in-sea type fibre is become three-dimensional cross-linked non-weaving cloth;C, typing flatten: this non-weaving cloth is eliminated stress through heat shrink, be processed into the pressure roller that can set the gap again have certain thickness, density and powerful pressing cloth;D, wet impregnation: should pressing cloth wet polyurethane solution impregnation, then solidify, wash, form a polyurethane inner coating on described pressing cloth surface, by different condition control, obtain having the synthetic leather base cloth in minute aperture or huge hole;E, extract decrement out: utilize hot toluene that this base cloth is carried out the continuous extraction of convection current multistage, the polyethylene in its inner islands-in-sea type fibre is removed and be pencil fine structure, extract out after the decrement treatment again succeeded by multiple tracks and wash to clean the toluene on the base cloth after this decrement;F, dryness finalization: the base cloth after will washing in setting machine through the moulding of high temperature drying heat fixation;G, soft treatment: this fixed-type base cloth is carried out soft treatment with containing a certain proportion of softener solution;H, dry method are moved film: equably be coated on release liners on certain interval deployed dry method polyurethane slurry, solvent evaporates forms the polyurethane surface facial mask after dry, then with the viscoelastic polyurethane resin base cloth and this polyurethane surface facial mask that step G forms is bonded together, drying is peeled off this release liners after processing again.
- 2. method according to claim 1, it is characterized in that: the mass ratio that mixes rear nano-tourmaline powder and PA6 in the b step is 1:100～4:100.
- 3. method according to claim 1 is characterized in that: in a step in the PA6 masterbatch weight of nano-tourmaline powder account for 20%-30%.
- 4. method according to claim 1, it is characterized in that: the mass ratio that mixes rear PA6 and PE in the b step is 45:55～70:30.
- 5. method according to claim 1, it is characterized in that: the particle size range of described nano-tourmaline powder is 50～100 nanometers.
- 6. method according to claim 1 is characterized in that: the polyurethane solutions prescription described in the D step is as follows: by weight, and 100 parts of polyurethane resins, 25～45 parts of dimethyl formamides, 0.5～2 part of auxiliary agent, 3～6 parts in nano-tourmaline powder, 0～10 part of pigment.
- 7. method according to claim 1, it is characterized in that: the prescription of dry method polyurethane slurry is as follows described in the H step: by weight, top layer: 100 parts of polyurethane resins, 60 parts of solvents, 1～5 part in nano-tourmaline powder, 0.5～2 part of auxiliary agent, 0～10 part of pigment; Middle level: 100 parts of polyurethane resins, 60 parts of solvents, 0.5～2 part of auxiliary agent, 1～5 part in nano-tourmaline powder, 0～10 part of pigment; Tack coat: 100 parts of polyurethane resins, 60 parts of solvents, 0.5～2 part of auxiliary agent, 1～5 part in nano-tourmaline powder.
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Effective date of registration: 20200927 Address after: 366100 Datian County of Sanming City Fujian province Jingkou Industrial Zone Patentee after: Fujian xinlongshang Super Fiber Co., Ltd Address before: Gold town, West Ring Road of Jinjiang city in Fujian province 362000 Quanzhou city edge (Technology Industrial Zone) Patentee before: FUJIAN LONGSHANG MICROFIBER Co.,Ltd. |
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