CN102168384A - 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 PDF

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Publication number
CN102168384A
CN102168384A CN 201010609339 CN201010609339A CN102168384A CN 102168384 A CN102168384 A CN 102168384A CN 201010609339 CN201010609339 CN 201010609339 CN 201010609339 A CN201010609339 A CN 201010609339A CN 102168384 A CN102168384 A CN 102168384A
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polyurethane
parts
nano
tourmaline powder
synthetic leather
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CN 201010609339
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CN102168384B (en
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张树仁
孙卫东
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福建隆上超纤有限公司
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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 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

A kind of synthetic leather and manufacture method thereof that can discharge anion

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 discharge anion, this synthetic leather especially is fit to be used for making the automotive trim leather.

Background technology

Along with the fast development of Domestic Automotive Industry, the demand of automotive trim leather is also increasing year by year.The corium leather is the first-selection of high-grade automotive trim leather always, but is subjected to the deficient day by day and more and more high environmental requirement of corium resource, and corium automobile leather is not the fashion trend of following automotive trim leather.Artificial synthetic leather will play a significant role at following automotive trim leather, because the domestic automobile industry starts to walk soft evening, automotive trim design and developing material also relatively lag behind, and the main PVC artificial leather of using can't satisfy the pursuit of people to 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 super-refinement 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 big specific area of superfine fibre and water imbibition function, make superfine fiber chemical leather have the ultra-fine collagenous fibres of pencil natural leather intrinsic moisture absorption feature.Thereby realized that microstructure internally to aspects such as appearance tactile impression, can compare favourably with high-grade natural leather.Aspects such as its mechanics physical property, chemical resistance, quality homogeneity, big 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 corium 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 the molten marine facies component of going of solvent, just can obtain the superfine fibre that the island constitutes 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 particular structure, even small temperature or pressure take place to be changed, also can cause between the tourmaline crystal to produce potential difference, and lure airborne hydrone or oxygen molecule generation ionization into and generate corresponding anion.Anion is called air vitamin or auxin, its health, human body is kept the energetic great effect that has to human body, utilize anion to purify air, this is because airborne harmful components are positively charged mostly, therefore anion very easily with air in small contamination particle adsorb mutually and the ground that sinks, thereby make air cleaning; In like manner, utilize anion can also play pernicious gases such as effectively dispeling ammonia, formaldehyde, benzene and 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 the blood of human body circulation.

Automobile has become instrument indispensable in the people life, and people also become more and more longer the time in car, and the space in the car is limited, and the circulation of air degree is relatively poor, so the interior space environmentAL safety, health comfortablely becomes more important.If can produce the nano-tourmaline powder of anion adds in the automotive trim leather, produce can negative ion-releasing function the automotive trim leather, bring revolutionary breakthrough will for so the lifting of environmental quality in the automobile, not be seen in report and see this technical scheme as yet in the present prior art.

Summary of the invention

The purpose of this invention is to provide a kind of synthetic leather that can discharge anion,, utilize the automotive trim leather of this synthetic leather manufacturing of the present invention to have the function that discharges anion to solve the above-mentioned problems in the prior art.

Another object of the present invention provides a kind of manufacture method of above-mentioned synthetic leather.

A kind of synthetic leather that can discharge anion of the present invention, comprise base layer, polyurethane inner coating and polyurethane skin layer, described base layer is made up 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, utilize cutting machine to cut off by different size again;

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, solidify then, 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 super-refinement 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, dry back solvent evaporates forms polyurethane skin layer, with the viscoelastic polyurethane resin base cloth and this polyurethane skin layer that step G forms is bonded together then, drying is peeled off this release liners after handling again.

In said method, the mass ratio that mixes back 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 back 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 that discharges anion, therefore it is used to make the beneficial effect that the automotive trim leather can be achieved as follows:

(1) has the function of permanent release anion, 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,, promote the blood of human body circulation with human body far infrared wave appearance coupling;

(3) can effectively dispel the peculiar smell such as human body stink with perspiration, smoke of 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

To synthetic leather of the present invention and manufacture method thereof be described in further detail by specific embodiment below.

Embodiment 1: a kind of manufacture method of the synthetic leather that can discharge anion 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 the island with PA6, 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, carry out machine crimp then, 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 the 420 grams/fiber web of three-dimensional net structure square metre is arranged through mechanical carding, laying, and becoming density by needing machine acupuncture again is the non-weaving cloth of 0.24 gram/square centimeter;

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 the decrement 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, back dryness finalization 2 minutes under 160 ℃ temperature.Handle through containing 2% concentration softener again, increase the pliability and the tearing strength of base cloth.Dry back one-tenth thickness is 1.10~1.15 millimeters base cloth.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 relevant parameters in the parameter alternative 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 PA6 color 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 gram/square centimeter 0.24 gram/square centimeter 0.27 gram/square centimeter Setting temperature 120℃ 125℃ 115℃

Among the above embodiment, the trade name of PA6 is a polyamide fibre 6, and P E is a polyethylene.

The above only is an 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 (12)

1. synthetic leather that can discharge anion, comprise base layer, polyurethane inner coating and polyurethane skin layer, described base layer is made up 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, it is characterized in that: described PA6 superfine fibre contains the nano-tourmaline powder.
2. synthetic leather according to claim 1 is characterized in that: the mass ratio of the PA6 in described nano-tourmaline powder and the described PA6 superfine fibre is 1:100~4:100.
3. synthetic leather according to claim 1 and 2 is characterized in that: the particle size range of described nano-tourmaline powder is 50~100 nanometers.
4. synthetic leather according to claim 1 is characterized in that: 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.
5. synthetic leather according to claim 1 is characterized in that: 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, 60 parts of solvents, 0.5~2 part of auxiliary agent, 1~5 part in nano-tourmaline powder.
6. make the method for the described synthetic leather of claim 1, 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, utilize cutting machine to cut off by different size again;
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, solidify then, 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 super-refinement 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, dry back solvent evaporates forms the polyurethane surface facial mask, with the viscoelastic polyurethane resin base cloth and this polyurethane surface facial mask that step G forms is bonded together then, drying is peeled off this release liners after handling again.
7. method according to claim 6 is characterized in that: the mass ratio that mixes back nano-tourmaline powder and PA6 in the b step is 1:100~4:100.
8. method according to claim 6 is characterized in that: in a step in the PA6 masterbatch weight of nano-tourmaline powder account for 20%-30%.
9. method according to claim 6 is characterized in that: the mass ratio that mixes back PA6 and PE in the b step is 45:55~70:30.
10. method according to claim 6 is characterized in that: the particle size range of described nano-tourmaline powder is 50~100 nanometers.
11. method according to claim 6 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.
12. method according to claim 6 is characterized in that: 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, 60 parts of solvents, 0.5~2 part of auxiliary agent, 1~5 part in nano-tourmaline powder.
CN 201010609339 2010-12-28 2010-12-28 Synthetic leather capable of releasing negative ions and preparation method of the synthetic leather CN102168384B (en)

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WO2015058507A1 (en) * 2013-10-21 2015-04-30 成恵民 Method for manufacturing interior decoration material, active material and manufacturing method therefor
CN103753918A (en) * 2013-12-10 2014-04-30 马鞍山湖滨无纺布科技有限公司 Degerming deodorization non-woven fabric and preparation method thereof
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CN103710881A (en) * 2013-12-24 2014-04-09 福建南纺股份有限公司 Anion non-woven fabric and manufacturing method thereof and mask
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CN105313796A (en) * 2014-07-03 2016-02-10 上海斯米克控股股份有限公司 Automobile interior plate capable of releasing anions
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CN105316867A (en) * 2015-10-21 2016-02-10 吴江耀迪纺织品有限公司 Cloth capable of releasing negative ions and processing method thereof
CN105544236B (en) * 2016-01-18 2018-06-26 安徽安利材料科技股份有限公司 A kind of anion high-releasing amount Synthetic Leather and its manufacturing method
CN105544236A (en) * 2016-01-18 2016-05-04 安徽安利材料科技股份有限公司 Negative-ion high-release-amount polyurethane synthetic leather and manufacturing method thereof
CN106544874A (en) * 2016-10-27 2017-03-29 泉州众信超纤科技股份有限公司 The preparation technology of natural biological, Plant fiber's woven fabric material and product
CN106544878A (en) * 2016-10-27 2017-03-29 泉州众信超纤科技股份有限公司 The preparation technology of the compound woven fabric material of natural animal collagen albumen and product
CN106544883A (en) * 2016-10-27 2017-03-29 泉州众信超纤科技股份有限公司 Hot light prepares the preparation technology of the woven fabric material and product of stereo natural light
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CN108084697A (en) * 2017-12-01 2018-05-29 中燊璨环保科技有限公司 A kind of PVC fabrics for generating small particle negative oxygen ion and preparation method thereof
CN108894003A (en) * 2018-09-04 2018-11-27 四川大学 A kind of superfine fibre suede and preparation method thereof generating negative oxygen ion
CN109371707A (en) * 2018-09-29 2019-02-22 中国第汽车股份有限公司 A kind of preparation method of antifouling negative ion fabric mask
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