CN117166259A - Artificial leather and manufacturing method thereof - Google Patents

Artificial leather and manufacturing method thereof Download PDF

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Publication number
CN117166259A
CN117166259A CN202210530068.5A CN202210530068A CN117166259A CN 117166259 A CN117166259 A CN 117166259A CN 202210530068 A CN202210530068 A CN 202210530068A CN 117166259 A CN117166259 A CN 117166259A
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China
Prior art keywords
layer
molecular sieve
parts
polyvinyl chloride
artificial leather
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CN202210530068.5A
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Chinese (zh)
Inventor
廉成波
马垚
周莹
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Benecke Changshun Auto Trim Zhangjiagang Co Ltd
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Benecke Changshun Auto Trim Zhangjiagang Co Ltd
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Application filed by Benecke Changshun Auto Trim Zhangjiagang Co Ltd filed Critical Benecke Changshun Auto Trim Zhangjiagang Co Ltd
Priority to CN202210530068.5A priority Critical patent/CN117166259A/en
Priority to PCT/EP2023/062291 priority patent/WO2023222461A1/en
Publication of CN117166259A publication Critical patent/CN117166259A/en
Pending legal-status Critical Current

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    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
    • D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
    • D06N3/0002—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the substrate
    • D06N3/0009—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the substrate using knitted fabrics
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M11/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising
    • D06M11/77—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with silicon or compounds thereof
    • D06M11/79—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with silicon or compounds thereof with silicon dioxide, silicic acids or their salts
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
    • D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
    • D06N3/0043—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by their foraminous structure; Characteristics of the foamed layer or of cellular layers
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
    • D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
    • D06N3/0056—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the compounding ingredients of the macro-molecular coating
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
    • D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
    • D06N3/0056—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the compounding ingredients of the macro-molecular coating
    • D06N3/0065—Organic pigments, e.g. dyes, brighteners
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
    • D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
    • D06N3/04—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • D06N3/06—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds with polyvinylchloride or its copolymerisation products
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
    • D06N2205/00—Condition, form or state of the materials
    • D06N2205/10—Particulate form, e.g. powder, granule
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
    • D06N2207/00—Treatments by energy or chemical effects
    • D06N2207/06—Treatments by energy or chemical effects using liquids, e.g. water
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
    • D06N2209/00—Properties of the materials
    • D06N2209/08—Properties of the materials having optical properties
    • D06N2209/0807—Coloured
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
    • D06N2209/00—Properties of the materials
    • D06N2209/12—Permeability or impermeability properties
    • D06N2209/121—Permeability to gases, adsorption
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
    • D06N2209/00—Properties of the materials
    • D06N2209/16—Properties of the materials having other properties
    • D06N2209/165—Odour absorbing, deodorizing ability
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
    • D06N2213/00—Others characteristics
    • D06N2213/02—All layers being of the same kind of material, e.g. all layers being of polyolefins, all layers being of polyesters

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Synthetic Leather, Interior Materials Or Flexible Sheet Materials (AREA)

Abstract

The invention discloses artificial leather and a manufacturing method thereof, wherein the artificial leather comprises a skin layer and a base cloth layer, the base cloth layer contains a molecular sieve adsorbent, the pore canal size of the molecular sieve adsorbent is 0.4-1nm, and the silicon-aluminum ratio of the molecular sieve adsorbent is more than 30. The applicant has unexpectedly found through a large number of experiments and researches that the odor grade and the VOC emission of the artificial leather prepared by the molecular sieve adsorbent can be effectively reduced by adding the molecular sieve adsorbent with specific pore canal size (0.4-1 nm) and specific silicon-aluminum ratio (more than 30) into the base cloth layer, so that the requirements of people on the odor grade and the VCO emission are met, the pleasure of the user is effectively improved, the health of the user is ensured, and unexpected technical effects are obtained.

Description

Artificial leather and manufacturing method thereof
[ field of technology ]
The present invention relates to an artificial leather containing a molecular sieve adsorbent and a method for manufacturing the same.
[ background Art ]
Leather is widely used as a surface finishing material in many fields of automobiles, home furnishings, etc., and common leather is dermis, polar artificial leather such as polyvinyl chloride (hereinafter referred to as PVC) artificial leather, nonpolar artificial leather such as thermoplastic polyolefin elastomer (TPO) artificial leather, etc.
In recent years, with the improvement of the overall living standard of society, people are increasingly pursuing healthy life. In addition to the concern for air quality in home, air quality in automobiles is also becoming increasingly of concern to consumers. Taking PVC artificial leather widely used in automotive interiors as an example, since the raw materials thereof contain volatile organic substances (hereinafter referred to as VOC) such as alcohols, acids, and benzene, the odor and emission of VOC thereof have been receiving particular attention from host factories and consumers. With the issuance and implementation of GB 27630 in-car air quality guide, the requirements of a host factory on the odor and VOC emission of automotive interior materials are more and more stringent, however, the requirements of the host factory on the odor grade and VOC emission are difficult to meet by the existing PVC artificial leather.
Therefore, a new solution is desired to solve the above technical problems.
[ invention ]
The technical problems to be solved by the invention are as follows: provided are an artificial leather having a low odor level and a low VOC emission, and a method for manufacturing the same.
In order to solve the technical problems, the invention adopts the following technical scheme: an artificial leather comprising a skin layer and a base layer, the base layer containing a molecular sieve adsorbent having a pore size in the range of 0.4 to 1nm, for example 0.4nm, 0.5nm, 0.6nm, 0.7nm, 0.8nm, 0.9nm, 1nm or any range between any two of these values, preferably 0.5 to 0.8nm; the molecular sieve adsorbent has a silica to alumina ratio of greater than 30, preferably greater than 300, more preferably greater than 800, and more preferably from 800 to 1000. In the invention, the molecular sieve adsorbent is zeolite, and the chemical composition general formula is: (M) 2/ n O·Al 2 O 3 ·xSiO 2 ·pH 2 O, wherein M is a metal ion, n is the valence of the metal ion, and x is SiO 2 Also known as the silicon to aluminum ratio, and P is the number of moles of water.
In the present invention, the skin layer may be a polar skin layer or a nonpolar skin layer.
In the invention, the surface layer is a PVC compact layer and a PVC foaming layer, and the artificial leather further comprises a PVC glue layer positioned between the PVC foaming layer and the base cloth layer. The PVC dense layer comprises a PVC resin, a plasticizer, a stabilizer, a toner, and the molecular sieve adsorbent, the PVC dense layer comprising 40-60 parts of the PVC resin, 40-60 parts of the plasticizer, 1-5 parts of the stabilizer, 1-5 parts of the toner, and 0.5-1.2 parts, e.g., 0.5 parts, 0.7 parts, 0.9 parts, 1.0 parts, 1.2 parts, or a molecular sieve adsorbent in a range between any two of these values, based on 100 parts of the total weight of the PVC resin and the plasticizer. The PVC foam layer comprises a PVC resin, a plasticizer, a stabilizer, a foaming agent, a flame retardant, a toner and the molecular sieve adsorbent, wherein the PVC foam layer comprises 40-60 parts of the PVC resin, 40-60 parts of the plasticizer, 1-5 parts of the stabilizer, 1-3 parts of the foaming agent, 3-5 parts of the flame retardant, 1-3 parts of the toner and 0.5-1.2 parts, such as 0.5 parts, 0.7 parts, 0.9 parts, 1.0 parts, 1.2 parts or a molecular sieve adsorbent in a range between any two of these values, based on 100 parts of the total weight of the PVC resin and the plasticizer. The PVC glue layer comprises a PVC resin, a plasticizer, a stabilizer and the molecular sieve adsorbent, wherein the PVC glue layer comprises 40-60 parts of the PVC resin, 40-60 parts of the plasticizer, 1-5 parts of the stabilizer and 0.5-1.2 parts, such as 0.5 parts, 0.7 parts, 0.9 parts, 1.0 parts, 1.2 parts or a molecular sieve adsorbent in a range between any two of these values, based on 100 parts of the total weight of the PVC resin and the plasticizer.
In the present invention, a person skilled in the art may select conventional PVC resins, such as Shanghai chlor alkali, shanghai China, and the sold PVC emulsion powder with the trade name P440, for the PVC compact layer, the PVC foaming layer, and the PVC glue layer according to actual needs; for another example, a PVC emulsion powder sold under the trade name KVH in New Jersey, USA; for another example, PVC emulsion powder sold under the trade name PSM-31 in Shenyang chemical industry, china Shenyang.
In the present invention, a person skilled in the art may select conventional plasticizers for the PVC compact layer, the PVC foam layer and the PVC glue layer according to actual needs, may select phthalic plasticizers such as dialkyl phthalate, may select a trimellitic plasticizer such as trialkyl trimellitate, and may select a combination of two or more plasticizers.
In the present invention, a person skilled in the art may select conventional stabilizers, such as an epoxy-based stabilizer, a calcium-zinc stabilizer, and a combination of both, for example, a calcium-zinc stabilizer sold under the trade name MC 9656 EP by the company of the plastic additive of the hundred Luo He (Jiangsu) limited, jiangsu, china, for the dense layer of PVC, the foamed layer of PVC, and the glue layer of PVC according to actual needs.
In the present invention, the person skilled in the art can select to add or not add the toner to the PVC compact layer and the PVC foam layer according to actual needs, and if the toner is required to be added, the person skilled in the art can select conventional toner according to actual needs, and can be inorganic pigment, or can be organic pigment, such as iron oxide red, titanium oxide, iron oxide yellow, chrome yellow and cadmium red.
In the invention, other auxiliary agents such as an antioxidant, an ultraviolet absorber and the like can be added to the PVC compact layer according to the need.
In the present invention, a person skilled in the art may select a conventional foaming agent for the PVC foaming layer according to actual needs, may select a physical foaming agent, for example, a microsphere foaming agent sold under the trade name microsphere Y-150D by torches international trade company, zhejiang, china, may select a chemical foaming agent, for example, azodicarbonamide, or may select a combination of a plurality of foaming agents.
In the present invention, the person skilled in the art can choose to add or not add the flame retardant to the PVC foaming layer according to actual needs, and if the flame retardant is needed, the person skilled in the art can choose conventional flame retardants, such as aluminum hydroxide, magnesium hydroxide, antimony trioxide, halogen flame retardants, phosphorus flame retardants, nitrogen flame retardants, according to actual needs.
In the present invention, it is known to those skilled in the art that the slurry viscosity of the raw materials of the dense layer of PVC is usually controlled to be in the range of 3000 to 30000mpa.s when mixed, and the slurry viscosity of the raw materials of the glue layer of PVC is usually controlled to be in the range of 4000 to 15000mpa.s when mixed. It is well known to those skilled in the art to control the slurry viscosity of the PVC compact layer and the PVC glue layer, mainly by selecting PVC resins of different viscosities and adjusting the ratio of PVC resin and plasticizer.
In the present invention, it is also known to those skilled in the art that the PVC resin in the PVC compact layer, the PVC resin in the PVC foam layer, and the PVC resin in the PVC glue layer may be the same or different; the plasticizer in the PVC compact layer, the plasticizer in the PVC foaming layer and the plasticizer in the PVC glue layer can be the same or different; the stabilizer in the PVC compact layer, the stabilizer in the PVC foaming layer and the stabilizer in the PVC glue layer can be the same or different; the toner in the PVC compact layer and the toner in the PVC foaming layer can be the same or different.
In the present invention, the base cloth layer is provided with the molecular sieve adsorbent on a side facing the skin layer or on both sides of the base cloth layer or on both sides and inside of the base cloth layer.
In the present invention, the base fabric layer contains 0.3% to 2% molecular sieve adsorbent based on the total weight of the base fabric layer. If the molecular sieve adsorbent is too small, the adsorption effect is poor, but the adsorption capacity of the base cloth is limited, and the base cloth cannot adsorb too much molecular sieve adsorbent.
In the invention, the base cloth layer can be made of polyester weft knitted fabric, of course, the base cloth layer can be made of nylon, the style can be made of warp knitting or non-woven fabric, and the knitting mode can be made of weaving.
In the present invention, the PVC artificial leather further includes a paint layer on the surface of the skin layer, and a person skilled in the art can select a conventional paint layer, preferably an aqueous polyurethane paint, according to need.
In order to solve the technical problems, the invention can also adopt the following technical scheme: the base cloth layer of the artificial leather is manufactured by a base cloth through a water washing process, the production process of the base cloth layer comprises weaving, water washing and heat setting, a molecular sieve adsorbent is added into a water washing tank in the water washing step, the molecular sieve adsorbent is attached to the base cloth in the water washing process of the base cloth, and moisture on the base cloth is dried in the heat setting process, and the molecular sieve adsorbent is remained on the base cloth.
Compared with the prior art, the invention has the following beneficial effects: the applicant has unexpectedly found through a large number of experiments and researches that the odor grade and the VOC emission of the artificial leather prepared by the molecular sieve adsorbent can be effectively reduced by adding the molecular sieve adsorbent with specific pore canal size (0.4-1 nm) and specific silicon-aluminum ratio (more than 30) into the base cloth layer, so that the requirements of people on the odor grade and the VCO emission are met, the pleasure of the user is effectively improved, the health of the user is ensured, and unexpected technical effects are obtained.
[ detailed description ] of the invention
The invention is further illustrated by the following examples and comparative examples.
Example 1
The present example is a preparation method of PVC artificial leather, and the preparation method of PVC artificial leather adopted in the present example is a conventional method in the art, and a person skilled in the art can clearly know how to select specific equipment, process steps and conditions, so the following description of the preparation process only relates to key steps and conditions of one of the preparation methods.
Step one, mixing materials
According to the dense layer formulations given in tables 1-1 and 2, the dense layer formulation components given in tables 1-1 and 2 were placed in a mixing tank, followed by mechanical stirring and vacuum pumping until uniformly mixed. This gives a PVC paste of the skin layer.
According to the foam layer formulations given in tables 1-1 and 2, the foam layer formulation components given in tables 1-1 and 2 were placed in a mixing tank, followed by mechanical stirring and vacuum pumping until uniformly mixed. Thus, a PVC paste of a foamed layer was obtained.
According to the glue layer formulations given in tables 1-1 and 2, the glue layer formulation components given in tables 1-1 and 2 were placed in a mixing tank, then mechanically stirred and evacuated until uniformly mixed. This gives a PVC paste of the glue layer.
Step two, manufacturing base cloth
The polyester weft knitting knitted fabric is manufactured by adopting weaving, water washing and heat setting processes.
Step three, coating and base cloth compounding
And (3) coating PVC slurry of the surface layer on release paper by adopting an indirect coating method, and feeding the release paper into a first section of oven for plasticizing and shaping. And then, on the plasticized compact layer, coating PVC slurry of the foaming layer, and continuously feeding the PVC slurry into a second section of baking oven for plasticizing and shaping. And then, coating PVC slurry of a water layer on the plasticized and shaped foaming layer by a roller, compounding polyester weft knitted fabric, and sending the PVC slurry into a third section of baking oven for final shaping to obtain the PVC artificial leather coating material. And (3) after the PVC artificial leather coating material is discharged from the oven, separating the PVC artificial leather coating material from the release paper, and respectively rolling the PVC artificial leather coating material and the release paper. The rolled PVC artificial leather coating material is sent to a printing stage.
Step four, printing
And in the printing stage, after unreeling the reeled PVC artificial leather coating material, printing aqueous polyurethane paint on a compact layer of the PVC artificial leather coating material. And (3) after the aqueous polyurethane paint is printed by a printer, sending the aqueous polyurethane paint into an oven for drying, and then cooling and rolling the aqueous polyurethane paint to obtain a rolled PVC artificial leather printing semi-finished product. The printed semi-finished product of the PVC artificial leather is sent to an embossing stage.
Step five, embossing
And in the embossing stage, unreeling the rolled PVC artificial leather printing semi-finished product. After the surface of the printed semi-finished product of the PVC artificial leather is softened by heating, the embossing roller is used for endowing the surface of the embossing roller with patterns by pressure. And cooling to obtain the PVC artificial leather with the patterns on the surface.
Examples 2 to 8
Examples 2-8 are also the preparation of PVC artificial leather, and the preparation process of PVC artificial leather, the raw material of paint layer and the choice of base cloth layer are all exactly the same as example 1, except that reference is made to tables 1-1, tables 1-2 and table 2.
Examples 9 to 12
Examples 9 to 12 are also the preparation of PVC artificial leather, and the preparation process of the PVC artificial leather and the raw materials of the paint layer are all identical to those of example 1, except that reference is made to tables 1 to 1, tables 1 to 3 and Table 2. Regarding the manufacture of the base cloth, in the washing step, a molecular sieve adsorbent is added in a washing tank, the molecular sieve adsorbent is attached to the base cloth in the washing process of the base cloth, and in the drying and shaping process, the moisture on the base cloth is dried, and the molecular sieve adsorbent is left on the base cloth.
Comparative examples 1 to 3
Comparative examples 1 to 3 are also the preparation of PVC artificial leather, and the preparation process of the PVC artificial leather, the raw material of the paint layer, and the choice of the base cloth layer are all exactly the same as in example 1, except for the differences described in tables 1 to 1, 1 to 4, and 2.
TABLE 1-1
TABLE 1-2
Tables 1 to 3
Tables 1 to 4
TABLE 2
Odor grade and VOC test of PVC imitation leather:
the odor grades of the PVC artificial leathers prepared in examples 1 to 12 and comparative examples 1 to 3 were tested according to the popular automobile odor test method PV 3900 C3, and the test results are shown in Table 3.
The odor properties of materials are classified according to standard regulations:
grade 1, odorless;
grade 2, odorous, but no interfering odor;
grade 3, having a distinct smell, but no disturbing smell;
grade 4, having an interfering odour;
grade 5, having a strong interfering odour;
grade 6, intolerable odors.
The TVOC of the PVC artificial leathers prepared in examples 1 to 12 and comparative examples 1 to 3 were tested according to the general automotive Total Volatile Organic Compound (TVOC) test method 2000L bag method, and the test results are shown in table 3.
Fatigue resistance test of PVC artificial leather:
the PVC artificial leathers prepared in examples 1 to 12 and comparative examples 1 to 3 were subjected to fatigue resistance test according to the test method of ISO 5402, and the test results are shown in Table 3.
TABLE 3 Table 3
From the above examples, comparative examples and test results, it is understood that the pore size and the silica-alumina ratio of the molecular sieve adsorbent affect the odor class and VOC emission of the PVC artificial leather in combination. When molecular sieve adsorbents with pore channel sizes of 0.4-1nm and silicon-aluminum ratio of more than 30 are selected to be added into the PVC compact layer, the PVC foaming layer, the PVC glue layer and the base cloth layer, the odor grade and the VOC emission of the prepared PVC artificial leather are low; in the above range, when the silicon-aluminum ratio of the molecular sieve adsorbent is determined, the larger the pore channel size of the molecular sieve adsorbent is, the better the adsorption effect of the molecular sieve adsorbent is; in the above range, when the pore size of the molecular sieve adsorbent is determined, the larger the silica-alumina ratio of the molecular sieve adsorbent is, the better the adsorption effect of the molecular sieve adsorbent is, but when the silica-alumina ratio of the molecular sieve adsorbent is more than 800, the influence of the change of the silica-alumina ratio on the adsorption effect of the molecular sieve adsorbent is insignificant, and the larger the silica-alumina ratio is, the more complicated the processing technology of the molecular sieve adsorbent is, and the higher the cost is. When the molecular sieve adsorbent is contained in the base cloth layer, the fatigue resistance of the PVC artificial leather can be improved by reducing the content of the molecular sieve adsorbent in the PVC compact layer, the PVC foaming layer and the PVC glue layer, and the odor grade and the VOC emission of the PVC artificial leather cannot be greatly influenced.
It will be appreciated that the above embodiments of the invention can be combined with each other to obtain further embodiments without conflict. The individual technical features described in the above embodiments may be combined in any suitable manner without contradiction.
The above embodiments are only preferred embodiments of the present invention, and not all embodiments. It will be appreciated by those skilled in the art that many reasonable variations may be made to the present invention without departing from the true spirit and scope of the invention, and that such reasonable variations are intended to be within the scope of the invention.

Claims (11)

1. An artificial leather comprising a skin layer and a base fabric layer, characterized in that: the base cloth layer contains a molecular sieve adsorbent, the pore canal size of the molecular sieve adsorbent is 0.4-1nm, and the silicon-aluminum ratio of the molecular sieve adsorbent is more than 30.
2. The artificial leather of claim 1, wherein: the chemical composition general formula of the molecular sieve adsorbent is as follows: (M) 2/n O·Al 2 O 3 ·xSiO 2 ·pH 2 O, wherein M is a metal ion, n is the valence of the metal ion, and x is SiO 2 P is the number of moles of water.
3. The artificial leather of claim 1, wherein: the pore canal size of the molecular sieve adsorbent is 0.5-0.8nm.
4. The artificial leather of claim 1, wherein: the molecular sieve adsorbent has a silica to alumina ratio of greater than 300, preferably greater than 800, and more preferably from 800 to 1000.
5. The artificial leather of claim 1, wherein: the base cloth layer is provided with the molecular sieve adsorbent on one side facing the epidermis layer or on two sides of the base cloth layer or on two sides and inside of the base cloth layer.
6. The artificial leather of claim 1, wherein: the base fabric layer contains 0.3% to 2% of the molecular sieve adsorbent based on the total weight of the base fabric layer.
7. The artificial leather according to any one of claims 1 to 6, wherein: the surface layer is a polyvinyl chloride compact layer and a polyvinyl chloride foaming layer, the artificial leather further comprises a polyvinyl chloride glue layer positioned between the polyvinyl chloride foaming layer and the base cloth layer, and the polyvinyl chloride compact layer, the polyvinyl chloride foaming layer and the polyvinyl chloride glue layer all contain the molecular sieve adsorbent.
8. The artificial leather of claim 7, wherein: the polyvinyl chloride compact layer comprises a polyvinyl chloride resin and a plasticizer, and comprises 40-60 parts of the polyvinyl chloride resin, 40-60 parts of the plasticizer, 1-5 parts of a stabilizer, 1-5 parts of toner and 0.5-1.2 parts of the molecular sieve adsorbent based on 100 parts of the total weight of the polyvinyl chloride resin and the plasticizer.
9. The artificial leather of claim 7, wherein: the polyvinyl chloride foaming layer comprises a polyvinyl chloride resin and a plasticizer, and comprises 40-60 parts of the polyvinyl chloride resin, 40-60 parts of the plasticizer, 1-5 parts of a stabilizer, 1-3 parts of a foaming agent, 1-3 parts of toner and 0.5-1.2 parts of the molecular sieve adsorbent based on 100 parts of the total weight of the polyvinyl chloride resin and the plasticizer.
10. The artificial leather of claim 7, wherein: the polyvinyl chloride glue layer comprises a polyvinyl chloride resin and a plasticizer, and based on 100 parts of the total weight of the polyvinyl chloride resin and the plasticizer, the polyvinyl chloride glue layer comprises 40-60 parts of the polyvinyl chloride resin, 40-60 parts of the plasticizer, 1-5 parts of a stabilizer and 0.5-1.2 parts of the molecular sieve adsorbent.
11. A method of manufacturing an artificial leather according to any one of claims 1 to 10, characterized in that: the base cloth layer of the artificial leather is manufactured by a base cloth through a water washing process, the production process of the base cloth layer comprises weaving, water washing and heat setting, in the water washing step, a molecular sieve adsorbent is added into a water washing tank, the molecular sieve adsorbent is attached to the base cloth in the water washing process of the base cloth, in the heat setting process, the moisture on the base cloth is dried, and the molecular sieve adsorbent is remained on the base cloth.
CN202210530068.5A 2022-05-16 2022-05-16 Artificial leather and manufacturing method thereof Pending CN117166259A (en)

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JP2010265561A (en) * 2009-05-14 2010-11-25 Suminoe Textile Co Ltd Fiber fabric having deodorization and voc removing function
KR101519737B1 (en) * 2013-11-21 2015-05-12 현대자동차주식회사 Method for removing smell of an artificial leather and the artificial leather using thereof
CN107190521B (en) * 2017-05-24 2019-10-29 贝内克-长顺汽车内饰材料（张家港）有限公司 A kind of low smell PVC artificial leather and preparation method thereof
CN107747233A (en) * 2017-10-27 2018-03-02 佛山威明塑胶有限公司 A kind of PVC artificial leather of low smell and preparation method thereof
CN107938371A (en) * 2017-11-15 2018-04-20 佛山市高明区生产力促进中心 A kind of PVC artificial leather and preparation method thereof
CN115369658A (en) * 2021-05-21 2022-11-22 贝内克-长顺汽车内饰材料（张家港）有限公司 Compact polyvinyl chloride layer composition, foamed polyvinyl chloride layer composition, glue layer composition and artificial polyvinyl chloride leather

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