CN111455677A - Preparation method of bio-based artificial leather with high air permeability - Google Patents
Preparation method of bio-based artificial leather with high air permeability Download PDFInfo
- Publication number
- CN111455677A CN111455677A CN202010259943.1A CN202010259943A CN111455677A CN 111455677 A CN111455677 A CN 111455677A CN 202010259943 A CN202010259943 A CN 202010259943A CN 111455677 A CN111455677 A CN 111455677A
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- Prior art keywords
- artificial leather
- foaming
- bio
- controlled
- drying
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 230000035699 permeability Effects 0.000 title claims abstract description 26
- 238000002360 preparation method Methods 0.000 title claims abstract description 17
- 238000005187 foaming Methods 0.000 claims abstract description 68
- 238000000034 method Methods 0.000 claims abstract description 25
- 239000002002 slurry Substances 0.000 claims abstract description 24
- 238000005507 spraying Methods 0.000 claims abstract description 19
- 239000000463 material Substances 0.000 claims abstract description 15
- 229920006025 bioresin Polymers 0.000 claims abstract description 7
- 239000002994 raw material Substances 0.000 claims abstract description 7
- 238000001035 drying Methods 0.000 claims description 28
- 239000000835 fiber Substances 0.000 claims description 28
- 238000005498 polishing Methods 0.000 claims description 14
- 239000000758 substrate Substances 0.000 claims description 14
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- 235000014113 dietary fatty acids Nutrition 0.000 claims description 11
- 229930195729 fatty acid Natural products 0.000 claims description 11
- 239000000194 fatty acid Substances 0.000 claims description 11
- -1 fatty acid ester Chemical class 0.000 claims description 11
- 239000011265 semifinished product Substances 0.000 claims description 11
- 238000004537 pulping Methods 0.000 claims description 10
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 claims description 9
- IMNFDUFMRHMDMM-UHFFFAOYSA-N N-Heptane Chemical compound CCCCCCC IMNFDUFMRHMDMM-UHFFFAOYSA-N 0.000 claims description 9
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- BJQHLKABXJIVAM-UHFFFAOYSA-N bis(2-ethylhexyl) phthalate Chemical compound CCCCC(CC)COC(=O)C1=CC=CC=C1C(=O)OCC(CC)CCCC BJQHLKABXJIVAM-UHFFFAOYSA-N 0.000 claims description 6
- 238000007602 hot air drying Methods 0.000 claims description 6
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- 238000005516 engineering process Methods 0.000 claims description 5
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 claims description 3
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims description 3
- MQIUGAXCHLFZKX-UHFFFAOYSA-N Di-n-octyl phthalate Natural products CCCCCCCCOC(=O)C1=CC=CC=C1C(=O)OCCCCCCCC MQIUGAXCHLFZKX-UHFFFAOYSA-N 0.000 claims description 3
- VOWAEIGWURALJQ-UHFFFAOYSA-N Dicyclohexyl phthalate Chemical compound C=1C=CC=C(C(=O)OC2CCCCC2)C=1C(=O)OC1CCCCC1 VOWAEIGWURALJQ-UHFFFAOYSA-N 0.000 claims description 3
- 239000004115 Sodium Silicate Substances 0.000 claims description 3
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 claims description 3
- 230000006835 compression Effects 0.000 claims description 3
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- 238000001723 curing Methods 0.000 claims description 3
- 238000007710 freezing Methods 0.000 claims description 3
- 230000008014 freezing Effects 0.000 claims description 3
- 229940051841 polyoxyethylene ether Drugs 0.000 claims description 3
- 229920000056 polyoxyethylene ether Polymers 0.000 claims description 3
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- 238000012805 post-processing Methods 0.000 claims description 3
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- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims description 3
- 229910052911 sodium silicate Inorganic materials 0.000 claims description 3
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- 239000011248 coating agent Substances 0.000 claims description 2
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- 239000000843 powder Substances 0.000 claims description 2
- 238000006065 biodegradation reaction Methods 0.000 abstract description 5
- 238000004519 manufacturing process Methods 0.000 abstract 1
- 239000010985 leather Substances 0.000 description 13
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 4
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 description 3
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- 229910002092 carbon dioxide Inorganic materials 0.000 description 2
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- 241001465754 Metazoa Species 0.000 description 1
- 229920001410 Microfiber Polymers 0.000 description 1
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
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- 231100000252 nontoxic Toxicity 0.000 description 1
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- 239000005014 poly(hydroxyalkanoate) Substances 0.000 description 1
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- 231100000331 toxic Toxicity 0.000 description 1
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- D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
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- Synthetic Leather, Interior Materials Or Flexible Sheet Materials (AREA)
Abstract
The invention provides a preparation method of bio-based artificial leather with high air permeability, which specifically comprises the following steps: the method comprises the steps of artificial leather base material manufacturing, foaming layer slurry preparation, spraying, foaming, post-treatment and the like. The bio-based high-permeability artificial leather prepared by the method provided by the invention adopts degradable bio-based raw materials as a base material and bio-based resin as an auxiliary material, and adopts the processes of papermaking, spunlace forming, foaming layer slurry preparation, spraying, foaming, post-treatment and the like, so that the requirements of longitudinal and transverse tearing strength of the artificial leather base material are met, the biodegradation rate of the prepared artificial leather exceeds more than 90%, the hand feeling is soft, the air permeability is good, and the method is particularly suitable for preparing high-end artificial leather products.
Description
Technical Field
The invention relates to a preparation method of artificial leather, in particular to a preparation method of bio-based high-breathability artificial leather.
Background
The breathability of leather is one of its valuable physical properties. Leather products on the market are currently prepared mainly from genuine or artificial leather. The natural leather has excellent air permeability because of more gaps existing between the interweaving of the collagen fibers and the fibers, but the quantity of the dermis is limited by the quantity of animals, the price is relatively high, and the natural leather cannot become the consumption category of the public.
The artificial leather can be classified into three types of PVC, PU and microfiber artificial leather in strict sense. These artificial leathers are made of PVC, PU and other chemical raw materials as base materials, and have certain defects and limitations, such as poor air permeability, too hard leather, pungent smell and the like, even toxic free formaldehyde and the like, although the chemical stability at normal temperature is high and the physical properties such as wear resistance and tear strength are excellent, the requirements of consumers cannot be met.
At present, there are many patents in literature describing the preparation method of breathable leather, for example, patent application "a breathable artificial leather" (publication number CN109457495A) discloses a preparation method of breathable leather, which comprises the following steps: the composite material consists of polyvinyl chloride resin, a toughening agent, a stabilizer, a filler, a lubricant, black paste, a plasticizer, a chain extender and a foaming agent in parts by mass. The artificial leather prepared by the method has the advantages that certain harmful substances such as DMF (dimethyl formamide) can be remained after the foaming agent is used, the hardness of the leather is too high, and pungent odor can be generated during degradation to pollute the environment.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides the preparation method of the bio-based artificial leather with high air permeability.
In order to realize the technical scheme, the invention provides a preparation method of bio-based artificial leather with high air permeability, which comprises the following steps:
s1, making of the artificial leather substrate: selecting regenerated fibers as raw materials, pulping by a disc mill, delivering the pulped regenerated fibers to a net part of a paper machine through a pulp flowing box, combining a spunlace reinforced fiber net forming process, and pressing and drying the pulped regenerated fibers to prepare an artificial leather base material;
s2, preparing foaming layer slurry: according to the mass fraction, mixing 80-120 parts of bio-based resin powder, 80-100 parts of environment-friendly plasticizer, 5-10 parts of foaming agent and 2-5 parts of softening agent, stirring and plasticizing to prepare foaming layer slurry;
s3, spraying: uniformly spraying the prepared foaming layer slurry on the surface of the artificial leather base material by a spraying machine, drying, crosslinking and curing, and pressing into an artificial leather semi-finished product by a film pressing machine;
s4, foaming: sending the semi-finished product of the artificial leather to a foaming furnace for foaming, and cooling and drying in a freezing chamber after foaming is finished;
s5, post-processing: and (5) printing or dyeing the semi-finished product prepared in the step (S4), drying, forming micro air holes on a conveying belt with a needling machine arranged above, polishing, embossing and rolling.
Preferably, the step S1 specifically includes the following steps:
s11, selecting ramie fibers and viscose fibers, mixing the ramie fibers and the viscose fibers according to the mass fraction ratio of 1:1, and then pulping by using a disc mill pulping machine, wherein the pulping degree of the pulp is controlled to be 25-30 DEG SR;
s12, delivering the pulped mixed pulp to the net part of a paper machine through a head box, controlling the sizing concentration to be 1-3%, dehydrating through the net part of the paper machine, obtaining a wet base material by adopting a spunlace reinforced fiber web forming technology, and controlling the spunlace pressure to be 80-120 × 105Pa, the water flow speed is 150-;
s13, drying the formed wet substrate by a shoe press and an oven to obtain the artificial leather substrate, and controlling the basis weight of the artificial leather substrate to be 150-200g/m 2.
Preferably, the pressing pressure of the shoe press is controlled to 600-; the drying temperature of the oven is 60-100 ℃.
Preferably, in step S2, the bio-based resin is one of aqueous polyurethane, acrylic acid and polyhydroxyalkanoate, and the environment-friendly plasticizer is one of dioctyl phthalate, di-sec-octyl phthalate and dicyclohexyl phthalate; the foaming agent is one of fatty alcohol-polyoxyethylene ether sodium sulfate, sodium silicate and n-heptane; the softening agent is one of pentaerythritol fatty acid ester, glycerol mono fatty acid ester and sorbitan fatty acid ester.
Preferably, the stirring speed of the foaming slurry in the step S2 is 1500-; the plasticizing temperature is 150-200 ℃, and the time is controlled to be 20-40 min.
Preferably, the spraying device in step S3 adopts a spiral spraying machine, the spraying speed is controlled at 100-2(ii) a The drying mode is hot air drying, the temperature is controlled to be 60-120 ℃, and the time is controlled to be 5-10 min; the pressure of the compression roller of the laminator is 5-15 kN/m.
Preferably, the foaming process in step S4 comprises three stages, wherein the foaming temperature in the first stage is controlled at 40-50 ℃, and the foaming time is 10-20 min; the second stage foaming temperature is controlled at 55-65 ℃, and the foaming time is 10-20 min; the foaming temperature of the third section is controlled at 45-50 ℃, and the foaming time is 10-20 min; the cooling temperature is set to-10-0 deg.C, and the drying time is 5-10 min.
Preferably, the printing ink mode is adopted in the step S5, and the printing ink amount is 2-5g/m2The drying mode is hot air drying, and the temperature is 40-80 ℃.
Preferably, in step S5, the needling machine number is ZX L-350, and the speed of the needling machine is controlled at 100-160 pcs/min.
Preferably, the pressure of the polishing roller in the polishing treatment in step S5 is 5-15kN/m, and the roller speed of the polishing roller is 120-250 r/min; the pressure of the embossing roller is 5-15 kN/m.
The preparation method of the bio-based artificial leather with high air permeability provided by the invention has the beneficial effects that:
1. the artificial leather prepared by the invention takes the regenerated fiber as a raw material and is assisted by the bio-based resin, is non-toxic and harmless, can be degraded in a natural environment, is green and environment-friendly, can be reused as the raw material after being recovered and treated, and can be recycled, thereby solving the problems of low recovery rate and non-degradability of the traditional genuine leather or artificial leather.
2. The artificial leather prepared by the invention has leather texture, is soft, high in air permeability and tear-resistant, stable micro air holes can be generated by foaming the foaming layer for three times at different degrees, the softness of the artificial leather is improved by adding the softening agent into the foaming slurry, and the texture is almost the same as that of genuine leather.
3. The artificial leather prepared by the invention can form micro air holes by utilizing a needle machine to perform needle punching on the surface of the leather semi-finished product, and can further improve the air permeability of the leather.
Drawings
FIG. 1 is a schematic flow chart of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments obtained by a person skilled in the art without making any inventive step are within the scope of the present invention.
The detection and characterization method of the artificial leather prepared in the specific embodiment of the invention is as follows:
1. and (3) air permeability measurement:
gurley air permeability instrument pair 10cm manufactured by Jinnan Ramsung electromechanical technology Limited2After air with the pressure of 1500Pa is applied to the synthetic leather sample, the air permeability of the sample is tested through a flow sensor.
2. Determination of longitudinal tear resistance and transverse tear resistance:
the longitudinal and transverse tear resistance of the synthetic leather samples was measured using a number S L Y-SI tear resistance tester manufactured by denlan optics electro-mechanical technologies, inc.
3. And (4) measuring the biodegradation rate.
According to the standard of the biodegradability detection, the biodegradability rate is expressed by detecting the ratio of the final release amount of carbon dioxide to the theoretical maximum release amount of carbon dioxide according to the GB/T19277 standard.
Specific examples of the process of the present invention are given below.
Example 1
A preparation method of bio-based artificial leather with high air permeability comprises the following steps:
s1, making artificial leather base material, namely selecting ramie fibers and viscose fibers, mixing the ramie fibers and the viscose fibers according to the mass fraction ratio of 1:1, pulping the ramie fibers and the viscose fibers by using a disc refiner, controlling the pulping degree of the pulp to be 28 +/-2 DEG SR, sending the pulped mixed pulp to a paper machine net part through a head box, controlling the pulp concentration to be 2%, dehydrating the pulp by the paper machine net part, obtaining the wet base material by adopting a spunlace reinforced fiber web forming technology, and controlling the spunlace pressure to be 100 spunlace 100 × 105Pa, the water flow speed is 160 pcs/min; drying the formed wet substrate by a shoe press and an oven to obtain the artificial leather substrate, controlling the pressing pressure of the shoe press to be 800kN/m, controlling the drying temperature of the oven to be 70 ℃, and controlling the quantitative amount of the artificial leather substrate to be 160g/m2;
S2, preparing foaming layer slurry: according to the mass fraction, 100 parts of waterborne polyurethane, 90 parts of environment-friendly plasticizer dioctyl phthalate, 6 parts of foaming agent fatty alcohol-polyoxyethylene ether sodium sulfate and 4 parts of softening agent pentaerythritol fatty acid ester are mixed, stirred and plasticized to prepare foaming layer slurry, wherein the stirring speed of the foaming layer slurry is 2000rpm, and the foaming layer slurry is stirred for 10 min; plasticizing at 180 deg.C for 30 min;
s3, spraying: uniformly spraying the foaming layer slurry prepared in the step S2 on the surface of the artificial leather substrate by a spiral spraying machine, drying, crosslinking and curing, and pressing into an artificial leather semi-finished product by a film pressing machine, wherein the spraying speed is controlled at 150pcs/min, and the coating amount is controlled at 90g/m2The drying mode is hot air drying, the temperature is controlled at 80 ℃, and the time is controlled at 10 min; the pressure of a compression roller of the film pressing machine is 10 kN/m;
s4, foaming: sending the semi-finished product of the artificial leather to a foaming furnace for foaming, and after foaming is finished, putting the semi-finished product of the artificial leather into a freezing chamber for cooling and drying, wherein the foaming process comprises three sections, the foaming temperature of the first section is controlled at 45 ℃, and the foaming time is 15 min; the second stage foaming temperature is controlled at 60 ℃, and the foaming time is 10 min; the foaming temperature of the third section is controlled at 50 ℃, and the foaming time is 15 min; the cooling temperature is set to-4 ℃, and the cooling and drying time is 10 min;
s5, post-processing: printing the semi-finished product prepared in the step S4, drying, forming micro air holes on a conveying belt with a needling machine arranged above, polishing, embossing, and rolling, wherein the printing ink amount is 3g/m2The drying mode is hot air drying, the temperature is 60 ℃, the model of a needle machine is ZX L-350, the speed of the needle machine is controlled at 120pcs/min, the pressure of a polishing roller for polishing treatment is 10kN/m, the speed of the polishing roller is 200r/min, and the pressure of a pressing roller for embossing treatment is 10 kN/m.
Example 2
The preparation method of bio-based artificial leather with high air permeability comprises the following steps of 1, wherein the foaming layer slurry in the step S2 comprises the following formula: according to the mass fraction, 80 parts of acrylic acid, 100 parts of environment-friendly plasticizer di-sec-octyl phthalate, 10 parts of foaming agent sodium silicate and 2 parts of softening agent quaternary glycerol mono fatty acid ester are mixed, stirred and plasticized to prepare foaming layer slurry, wherein the stirring speed of the foaming layer slurry is 2500rpm, and the foaming layer slurry is stirred for 5 min; plasticizing at 150 deg.C for 40 min; the amount of the dope in step S3 was controlled to 80g/m2The other technical features are the same as those of embodiment 1.
Example 3
The preparation method of bio-based artificial leather with high air permeability comprises the following steps of 1, wherein the foaming layer slurry in the step S2 comprises the following formula: according to the mass fraction, mixing 120 parts of polyhydroxy fatty acid ester, 80 parts of environment-friendly plasticizer dicyclohexyl phthalate, 5 parts of foaming agent n-heptane and 5 parts of softener quaternary sorbitan fatty acid ester, stirring and plasticizing to prepare foaming layer slurry, wherein the stirring speed of the foaming layer slurry is 1500rpm, and stirring is carried out for 8 min; plasticizing at 200 deg.C for 10 min; the amount of the dope in step S3 was controlled to 100g/m2Other techniquesThe characteristics are the same as in example 1.
Example 4
A method for preparing bio-based artificial leather with high air permeability, which comprises the steps substantially the same as those of example 1, except that the basis weight of the artificial leather substrate is controlled to 200g/m in step S12(ii) a The amount of the dope in step S3 was controlled to 100g/m2(ii) a In the step S4, the first-stage foaming temperature is controlled at 40 ℃, and the foaming time is 20 min; the second stage foaming temperature is controlled at 65 ℃, and the foaming time is 10 min; the foaming temperature of the third section is controlled at 50 ℃, and the foaming time is 20 min; the cooling temperature is set to-10 deg.C, and the cooling and drying time is 5 min. The remaining technical features are the same as those of example 1.
Example 5
A method for preparing bio-based artificial leather with high air permeability, which comprises the steps substantially the same as those of example 1, except that the sizing concentration is 1% in step S1, and the hydroentangling pressure is controlled to be 80 × 105Pa, water flow speed of 200pcs/min, and the basis weight of the artificial leather substrate is controlled to be 150g/m2(ii) a The amount of the dope in step S3 was controlled to 100g/m2(ii) a The amount of printing ink in step S5 was 2g/m2The drying temperature is 40 ℃, and the speed of the needle machine is controlled at 160 pcs/min; the pressure of the polishing roller is 5kN/m, and the roller speed of the polishing roller is 120 r/min; the pressure of the embossing roller is 15 kN/m; the remaining technical features are the same as those of example 1.
Comparative example 1
The air permeability, tearing resistance and biodegradation rate of the Yuan brand artificial leather (the artificial leather with better quality is on the market at present) purchased from the market are measured.
The air permeability, tear resistance, biodegradation rate and hand softness of the artificially judged products of examples 1 to 5 and comparative example 1 were measured, and the specific data are shown in table 1:
TABLE 1
As can be seen from the data in Table 1, through the comparison between examples 1-5 and comparative example 1, the bio-based artificial leather with high air permeability prepared by the method provided by the invention adopts degradable bio-based raw materials as the base material, is supplemented with bio-based resin, and adopts the processes of papermaking, spunlace forming, foaming layer slurry preparation, spraying, foaming, post treatment and the like, so that the requirements of longitudinal and transverse tearing strength of the artificial leather base material are met, the biodegradation rate of the prepared artificial leather exceeds more than 90%, the hand feeling is soft, the air permeability is good, and the method is particularly suitable for preparing high-end artificial leather products.
The above description is only for the preferred embodiment of the present invention, but the present invention should not be limited to the embodiment and the disclosure of the drawings, and therefore, all equivalent or modifications that do not depart from the spirit of the present invention are intended to fall within the scope of the present invention.
Claims (10)
1. A preparation method of bio-based artificial leather with high air permeability is characterized by comprising the following steps:
s1, making of the artificial leather substrate: selecting regenerated fibers as raw materials, pulping by a disc mill, delivering the pulped regenerated fibers to a net part of a paper machine through a pulp flowing box, combining a spunlace reinforced fiber net forming process, and pressing and drying the pulped regenerated fibers to prepare an artificial leather base material;
s2, preparing foaming layer slurry: according to the mass fraction, mixing 80-120 parts of bio-based resin powder, 80-100 parts of environment-friendly plasticizer, 5-10 parts of foaming agent and 2-5 parts of softening agent, stirring and plasticizing to prepare foaming layer slurry;
s3, spraying: uniformly spraying the prepared foaming layer slurry on the surface of the artificial leather base material by a spraying machine, drying, crosslinking and curing, and pressing into an artificial leather semi-finished product by a film pressing machine;
s4, foaming: sending the semi-finished product of the artificial leather to a foaming furnace for foaming, and cooling and drying in a freezing chamber after foaming is finished;
s5, post-processing: and (5) printing or dyeing the semi-finished product prepared in the step (S4), drying, forming micro air holes on a conveying belt with a needling machine arranged above, polishing, embossing and rolling.
2. The method for preparing artificial leather with high bio-based air permeability according to claim 1, wherein the step S1 specifically comprises the steps of:
s11, selecting ramie fibers and viscose fibers, mixing the ramie fibers and the viscose fibers according to the mass fraction ratio of 1:1, and then pulping by using a disc mill pulping machine, wherein the pulping degree of the pulp is controlled to be 25-30 DEG SR;
s12, delivering the pulped mixed pulp to the net part of a paper machine through a head box, controlling the sizing concentration to be 1-3%, dehydrating through the net part of the paper machine, obtaining a wet base material by adopting a spunlace reinforced fiber web forming technology, and controlling the spunlace pressure to be 80-120 × 105Pa, the water flow speed is 150-;
s13, drying the formed wet substrate by a shoe press and an oven to obtain the artificial leather substrate, and controlling the basis weight of the artificial leather substrate to be 150-200g/m 2.
3. The method for preparing artificial leather with high bio-based breathability according to claim 2, wherein: in the step S13, the pressing pressure of the shoe press is controlled to be 600-900 kN/m; the drying temperature of the oven is 60-100 ℃.
4. The method for preparing artificial leather with high bio-based breathability according to claim 1, wherein: in the step S2, the bio-based resin is one of waterborne polyurethane, acrylic acid and polyhydroxy fatty acid ester, and the environment-friendly plasticizer is one of dioctyl phthalate, di-sec-octyl phthalate and dicyclohexyl phthalate; the foaming agent is one of fatty alcohol-polyoxyethylene ether sodium sulfate, sodium silicate and n-heptane; the softening agent is one of pentaerythritol fatty acid ester, glycerol mono fatty acid ester and sorbitan fatty acid ester.
5. The method for preparing artificial leather with high bio-based breathability according to claim 1, wherein: in the step S2, the stirring speed of the foaming slurry is 1500-; the plasticizing temperature is 150-200 ℃, and the time is controlled to be 20-40 min.
6. The method for preparing artificial leather with high bio-based breathability according to claim 1, wherein: in the step S3, the spraying equipment adopts a spiral spraying machine, the spraying speed is controlled at 100-200pcs/min, and the coating amount is controlled at 80-100g/m2(ii) a The drying mode is hot air drying, the temperature is controlled to be 60-120 ℃, and the time is controlled to be 5-10 min; the pressure of the compression roller of the laminator is 5-15 kN/m.
7. The method for preparing artificial leather with high bio-based breathability according to claim 1, wherein: the foaming process in the step S4 comprises three sections, wherein the foaming temperature of the first section is controlled to be 40-50 ℃, and the foaming time is 10-20 min; the second stage foaming temperature is controlled at 55-65 ℃, and the foaming time is 10-20 min; the foaming temperature of the third section is controlled at 45-50 ℃, and the foaming time is 10-20 min; the cooling temperature is set to-10-0 deg.C, and the drying time is 5-10 min.
8. The method for preparing artificial leather with high bio-based breathability according to claim 1, wherein: step S5 is carried out by printing ink with a printing ink amount of 2-5g/m2The drying mode is hot air drying, and the temperature is 40-80 ℃.
9. The method for preparing artificial leather with high bio-based air permeability as claimed in claim 1, wherein in step S5, the type number of the needling machine is selected from ZX L-350, and the speed of the needling machine is controlled at 100-160 pcs/min.
10. The method for preparing artificial leather with high bio-based breathability according to claim 1, wherein: the pressure of the polishing roller in the polishing treatment in the step S5 is 5-15kN/m, and the roller speed of the polishing roller is 120-250 r/min; the pressure of the embossing roller is 5-15 kN/m.
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