CN111719317A - Environment-friendly styrene thermoplastic elastomer artificial leather and preparation method thereof - Google Patents

Environment-friendly styrene thermoplastic elastomer artificial leather and preparation method thereof Download PDF

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Publication number
CN111719317A
CN111719317A CN202010531407.2A CN202010531407A CN111719317A CN 111719317 A CN111719317 A CN 111719317A CN 202010531407 A CN202010531407 A CN 202010531407A CN 111719317 A CN111719317 A CN 111719317A
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thermoplastic elastomer
styrene
layer
artificial leather
styrene thermoplastic
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CN202010531407.2A
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CN111719317B (en
Inventor
陈大魁
陈健
杨青
曹渊源
黄旭生
谷汉进
肖丽伟
孙卫东
朱卫鹏
周慧源
周凯祥
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Zhejiang Zhongcheng Packing Material Co ltd
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Zhejiang Zhongcheng Packing Material Co ltd
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    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
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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
    • 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
    • D06N3/045—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 polyolefin or polystyrene (co-)polymers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/12—Layered products comprising a layer of synthetic resin next to a fibrous or filamentary layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/30—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers
    • B32B27/302—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers comprising aromatic vinyl (co)polymers, e.g. styrenic (co)polymers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B33/00—Layered products characterised by particular properties or particular surface features, e.g. particular surface coatings; Layered products designed for particular purposes not covered by another single class
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
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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
    • 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
    • D06N3/0006—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 woven fabrics
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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
    • 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
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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
    • 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
    • D06N3/0011—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 non-woven fabrics
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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
    • 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
    • D06N3/0015—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 fibres of specified chemical or physical nature, e.g. natural silk
    • D06N3/0025—Rubber threads; Elastomeric fibres; Stretchable, bulked or crimped fibres; Retractable, crimpable fibres; Shrinking or stretching of fibres during manufacture; Obliquely threaded fabrics
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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
    • 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
    • D06N3/0015—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 fibres of specified chemical or physical nature, e.g. natural silk
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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
    • 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
    • D06N3/005—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 obtained by blowing or swelling agent
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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
    • 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
    • D06N3/0054—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 obtained by mechanical perforations
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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
    • 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
    • D06N3/0061—Organic fillers or organic fibrous fillers, e.g. ground leather waste, wood bark, cork powder, vegetable flour; Other organic compounding ingredients; Post-treatment with organic compounds
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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
    • 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
    • D06N3/0063—Inorganic compounding ingredients, e.g. metals, carbon fibres, Na2CO3, metal layers; Post-treatment with inorganic compounds
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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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    • D06N3/0077—Embossing; Pressing of the surface; Tumbling and crumbling; Cracking; Cooling; Heating, e.g. mirror finish
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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
    • D06N3/0086—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the application technique
    • D06N3/0088—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the application technique by directly applying the resin
    • B—PERFORMING OPERATIONS; TRANSPORTING
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    • B32B2262/02—Synthetic macromolecular fibres
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    • B32B2262/0284—Polyethylene terephthalate [PET] or polybutylene terephthalate [PBT]
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    • B32B2307/00—Properties of the layers or laminate
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    • B32—LAYERED PRODUCTS
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  • Synthetic Leather, Interior Materials Or Flexible Sheet Materials (AREA)

Abstract

The invention relates to an environment-friendly styrene thermoplastic elastomer artificial leather and a preparation method thereof, wherein the thermoplastic elastomer artificial leather comprises a resin layer and a base cloth layer, the resin layer comprises a styrene thermoplastic elastomer bottom layer, a styrene thermoplastic elastomer middle layer and a styrene thermoplastic elastomer surface layer, and the styrene thermoplastic elastomer bottom layer is connected with the base cloth layer; the resin layer and the base cloth layer are formed in one step through multilayer coextrusion casting compounding equipment. The resin layer and the base cloth layer are firmly bonded, and no additional tackifier is needed, so that the adhesive is green and environment-friendly; the preparation method is simple and efficient, and can realize continuous production.

Description

Environment-friendly styrene thermoplastic elastomer artificial leather and preparation method thereof
Technical Field
The invention belongs to the technical field of artificial leather preparation, and particularly relates to environment-friendly styrene thermoplastic elastomer artificial leather and a preparation method thereof.
Background
In daily life, leather products are deeply loved by consumers, and basketballs, bags, automobile interiors, shoes, clothes and the like made of the leather products have a large share in the market. At present, leather products on the market mainly comprise natural leather, PVC leather, PU leather and the like. As is well known, natural dermis has limited resources, high price, complicated processing process and environmental pollution, and cannot meet the increasing demand of people. Although the PVC artificial leather has a wide application range and a low price, the general PVC leather has stiff hand feeling, poor cold resistance, low surface strength, poor softness and poor air permeability, and most importantly, the PVC leather has the environmental and health problems caused by the PVC artificial leather, and the PVC leather can release toxic substances such as dioxin and the like in the production and use processes, and the migration and volatilization of plasticizer additives and the like seriously affect the health of people. Nowadays, people pay more attention to environmental protection and health, PVC artificial leather is gradually being eliminated. The PU leather has the defects of peculiar smell, easy stripping of a surface coating, complex processing technology, environmental-friendly processing process (relating to the use, discharge and recovery of toxic substances such as heavy metal, formaldehyde, chlorophenol, dimethyl formamide and the like), and the like. With the international increasing demand for environmental protection, the development of artificial leather materials with high performance, weather resistance and good touch has been a trend.
TPE (thermoplastic elastomer) material is a material with the characteristics of high elasticity, high strength and high rebound resilience of rubber and injection molding processing. Among TPE materials, TPS (styrene thermoplastic elastomer) materials are a large class, and hydrogenated styrene-butadiene-styrene block copolymer (SEBS) and hydrogenated styrene-isoprene-styrene block copolymer (SEPS) do not contain unsaturated double bonds after hydrogenation, so that the TPS materials have excellent aging resistance, plasticity and high elasticity, can be processed and used without vulcanization, can be reused as leftover materials, and are green and environment-friendly.
Different artificial leathers and methods for their preparation are disclosed in the prior art. For example, chinese patent CN111051605A discloses an artificial leather and a method for manufacturing the same, which uses polyvinyl chloride resin, plasticizer, curing agent, surface treatment agent and other materials to prepare multi-layer foamed polyvinyl chloride-based artificial leather. Although various service performances of the prepared artificial leather reach the standard, the environment-friendly performance of the artificial leather is poor due to the presence of various additives such as a plasticizer and the like.
Chinese patent CN107163545A discloses an environment-friendly artificial leather, which comprises a base layer and a decorative layer on the surface of the base layer, wherein an adhesive layer is arranged between the base layer and the decorative layer; the base layer comprises ECO rubber, polyurethane resin, a solvent, a flame retardant, an anti-aging agent, a dispersing agent, a crosslinking agent, a foaming agent and the like. The used additives are various in types and high in cost.
Chinese patent CN108001024A discloses a thermoplastic elastomer artificial leather and a preparation method thereof, wherein the artificial leather resin layer is prepared from a polyurethane material, a thermoplastic elastomer, an unsaturated grafting monomer, a thickening agent and a defoaming agent through melt grafting or copolymerization, and the preparation method comprises the steps of film preparation, base cloth bonding, release paper bonding, separation, rolling and the like. The preparation method has complicated steps, and integrated molding and continuous production are difficult to realize.
Chinese patent CN109823014A discloses TPE artificial leather and a preparation method thereof, wherein the artificial leather comprises a base fabric, a TPE bottom layer and a TPE fabric layer, the TPE bottom layer and the TPE fabric layer are mainly composed of SEBS, ethylene-octene copolymer, EVA and the like, and the preparation method of the artificial leather mainly comprises the steps of mixing by an internal mixer, mixing and thin passing by an open mill, extruding by an extruder, pressing by a four-roll calender, foaming in a vulcanizer and the like. The preparation method has complicated steps, and integrated molding and continuous production are difficult to realize.
These prior arts can produce various types of artificial leathers, but are still insufficient in environmental protection or continuous production. The artificial leather material can realize high efficiency, integration and continuity of the preparation process while pursuing environmental protection, and is the development direction in the future.
Disclosure of Invention
In order to overcome the defects that the prior art is difficult to realize environmental protection and continuous production, the invention provides environment-friendly styrene thermoplastic elastomer artificial leather and a preparation method thereof.
The technical scheme adopted by the invention is as follows:
an environment-friendly styrene-based thermoplastic elastomer (TPS) artificial leather comprises a resin layer and a base fabric layer, wherein the resin layer comprises a styrene-based thermoplastic elastomer bottom layer, a styrene-based thermoplastic elastomer middle layer and a styrene-based thermoplastic elastomer surface layer, and the styrene-based thermoplastic elastomer bottom layer is connected with the base fabric layer;
the styrene thermoplastic elastomer bottom layer consists of a polarized thermoplastic elastomer;
the styrene thermoplastic elastomer intermediate layer is prepared from the following components in percentage by mass: 50-70% of styrene thermoplastic elastomer, 10-15% of polarized styrene thermoplastic elastomer, 5-20% of filling oil, 5-20% of ethylene-octene copolymer, 5-10% of ternary copolymer polypropylene, 3-8% of talcum powder and 2-8% of calcium carbonate;
the surface layer of the styrene thermoplastic elastomer is prepared from the following components in percentage by mass: 60-75% of styrene thermoplastic elastomer, 5-10% of polarized styrene thermoplastic elastomer, 5-15% of filling oil, 5-20% of ethylene-octene copolymer, 3-8% of talcum powder, 2-8% of polyamide, 2-8% of silicone and 2-5% of color master batch.
Preferably, the polarized thermoplastic elastomer is one or a combination of two or more of maleic anhydride grafted styrene thermoplastic elastomer, polyurethane and styrene thermoplastic elastomer block copolymer and glycidyl methacrylate grafted styrene thermoplastic elastomer.
Preferably, the styrenic thermoplastic elastomer is one or two of a hydrogenated styrene-butadiene-styrene block copolymer (SEBS) and a hydrogenated styrene-isoprene-styrene block copolymer (SEPS).
Preferably, the base fabric layer is one of a non-woven fabric, an elastic fabric, an ultra-fine fiber fabric, a plain woven fabric, a polyester knitted fabric, a nylon fabric and a spunlace fabric.
Preferably, the filling oil is paraffin oil or naphthenic oil, and the kinematic viscosity at 40 ℃ is 50-600 mm2(ii) a flash point of 250-300 ℃; the ethylene-octene copolymer has a melt index of 4-6 g/10min (measured at 230 ℃/2.16kg according to ASTM D1238-04), the Shore hardness of the terpolymer polypropylene is 75-90A (measured according to GB/T2411-2008), and the melt index is 4-7 g/10min (measured at 230 ℃/2.16kg according to ASTM D1238-04); the mesh number of the talcum powder and the calcium carbonate is 1500-3000 meshes.
The invention also provides a preparation method of the environment-friendly styrene thermoplastic elastomer artificial leather, which comprises the following steps:
(1) preparing a styrene thermoplastic elastomer base material:
s101, drying the polarized thermoplastic elastomer;
s102, if more than two types of the polarized thermoplastic elastomers are used, placing the dried polarized thermoplastic elastomers in parts by mass into a high-speed mixer, and uniformly mixing for later use;
(2) preparing a styrene thermoplastic elastomer intermediate layer material:
s201, adding a styrene thermoplastic elastomer and filling oil into a high-speed mixer according to mass percentage for physical mixing, and standing after mixing;
s202, adding the material which is well stood in the S201, a polarized styrene thermoplastic elastomer, an ethylene-octene copolymer, terpolymer polypropylene, talcum powder and calcium carbonate into a high-speed mixer together for physical mixing;
(3) preparing a surface layer material of a styrene thermoplastic elastomer:
s301, adding the styrene thermoplastic elastomer and the filling oil into a high-speed mixer according to the mass percentage for physical mixing, and standing after mixing;
s302, adding the material which is well stood in the S301, a polarized styrene thermoplastic elastomer, an ethylene-octene copolymer, talcum powder, polyamide, silicone and color master batch into a high-speed mixer together for physical mixing;
(4) preparing a base fabric layer
S401, placing a base cloth on a base cloth winding roll of an auxiliary machine roll of the multilayer co-extrusion casting compounding device;
(5) artificial leather for preparing styrene thermoplastic elastomer
S501, adding the styrene thermoplastic elastomer bottom layer material prepared in the step (1) into a feeding bin of a double-screw extruder C of a multilayer co-extrusion casting compounding device; adding the styrene thermoplastic elastomer intermediate layer material prepared in the step (2) into a feeding bin of a double-screw extruder B of the multilayer co-extrusion casting compounding equipment; adding the styrene thermoplastic elastomer surface layer material prepared in the step (3) into a feeding bin of a double-screw extruder A of the multilayer co-extrusion casting compounding equipment; simultaneously starting a double-screw extruder A, B, C, and setting the temperature of the extruder at 160-200 ℃; respectively adjusting the feeding amount and the screw rotating speed of each extruder and adjusting the thickness of a die lip at a leveling die head according to the film thickness and film layer thickness distribution requirements;
s502, unreeling the base cloth while stably casting a film layer at a flat die head die lip of the multilayer co-extrusion casting compounding device, simultaneously compressing a casting roller and an embossing roller, hot-pressing and compounding the resin layer and the base cloth layer, continuously stretching the resin layer and the base cloth layer through a traction roller and a tension roller, and reeling the resin layer and the base cloth layer through a reeling roller to prepare the styrene thermoplastic elastomer artificial leather.
Preferably, the foaming agent is added into the middle layer of the styrene-based thermoplastic elastomer, and the foaming step is carried out to prepare the foamed styrene-based thermoplastic elastomer artificial leather.
Preferably, the breathable porous artificial leather is prepared through a subsequent punching process, so that the breathability of the artificial leather is increased.
Preferably, the steady flow extending film layer of the double-screw extruder A is positioned at the uppermost layer, the steady flow extending film layer of the double-screw extruder B is positioned at the middle layer, and the steady flow extending film layer of the double-screw extruder C is positioned at the lowermost layer.
Preferably, in the step (1), the drying temperature is 80 ℃, the drying time is 2-5 h, and the mixing time in a high-speed mixer is 2-5 min; in the step (2), mixing time in a high-speed mixer is 2-5 min, and standing time after mixing is more than 3 h; in the step (3), the mixing time in the high-speed mixer is 2-5 min, and the standing time after mixing is more than 3 h.
Compared with the prior art, the invention has the beneficial effects that:
(1) the main components of the thermoplastic elastomer material used for leather making by the inventor are one or two of SEBS and SEPS, and the thermoplastic elastomer material does not contain unsaturated double bonds after hydrogenation, so that the thermoplastic elastomer material has excellent aging resistance; the material has plasticity and high elasticity, can be processed and used without vulcanization, can be reused as leftover materials, is green and environment-friendly, and does not contain volatile VOC; moreover, because of the polybutadiene or polyisoprene component of the soft segment, the finished product has good hand feeling and hardness;
(2) the used polarized thermoplastic elastomer plays a role in bonding the base cloth layer and the resin layer, so that the resin layer and the base cloth layer have excellent peel strength, no additional tackifier is needed, and the used polarized thermoplastic elastomer is environment-friendly and nontoxic;
(3) the invention realizes the continuous production of the product by one-step molding by utilizing the multilayer coextrusion casting compounding equipment under the condition of not additionally adding the tackifier.
Drawings
FIG. 1 is a schematic structural view of artificial leather of the present invention;
in the figure: 1. a base cloth layer; 2. a TPS bottom layer; 3. a TPS intermediate layer; 4. a TPS surface layer;
FIG. 2 is a flow chart of the present invention for preparing artificial leather by using a multi-layer coextrusion casting compounding apparatus.
Detailed Description
The present invention is further illustrated by the following examples, which should not be construed as limiting the scope of the invention. Those skilled in the art can and should understand that any simple changes or substitutions based on the spirit of the present invention should fall within the protection scope of the present invention.
Example 1
Referring to fig. 1, an environment-friendly styrene thermoplastic elastomer (TPS) artificial leather includes a resin layer and a base fabric layer 1, the base fabric layer being a polyester knitted fabric; the resin layer comprises a styrene thermoplastic elastomer bottom layer 2, a styrene thermoplastic elastomer middle layer 3 and a styrene thermoplastic elastomer surface layer 4, wherein the styrene thermoplastic elastomer bottom layer 2 is connected with the base cloth layer 1;
the styrene thermoplastic elastomer bottom layer consists of a polarized thermoplastic elastomer, and the polarized thermoplastic elastomer is maleic anhydride grafted hydrogenated styrene-butadiene-styrene block copolymer (SEBS);
the styrene thermoplastic elastomer intermediate layer is prepared from the following components in percentage by mass: SEBS 55%, 10% maleic anhydride grafted SEBS, and kinematic viscosity at 40 ℃ of 70mm210% of paraffin oil/s, 10% of ethylene-octene copolymer with the melt index of 5g/10min measured at 230 ℃/2.16kg, 5% of terpolymer polypropylene with the melt index of 6g/10min measured at 230 ℃/2.16kg, 5% of talcum powder with the mesh number of 1500 meshes and 5% of calcium carbonate with the mesh number of 1500 meshes;
the surface layer of the styrene thermoplastic elastomer is prepared from the following components in percentage by mass: SEBS 65%, 10% maleic anhydride grafted SEBS, and kinematic viscosity at 40 ℃ of 70mm210% of paraffin oil/s, 5% of ethylene-octene copolymer with the melt index of 5g/10min measured at 230 ℃/2.16kg, 3% of talcum powder with the mesh number of 1500 meshes, 2% of Polyamide (PA), 3% of silicone and 2% of color master batch.
The preparation method of the TPS artificial leather comprises the following steps:
(1) preparing a styrene thermoplastic elastomer base material:
s101, drying 100% of maleic anhydride grafted SEBS in a forced air drying oven at 80 ℃ for 3h for later use (the polarized TPS is used after being dried according to the conditions);
(2) preparing a styrene thermoplastic elastomer intermediate layer material:
s201, mixing SEBS 55% by mass and SEBS 70mm in kinematic viscosity at 40 DEG C2Adding 10% of paraffin oil/s into a high-speed mixer for physical mixing, wherein the mixing time is 3min, standing for 4h after the mixing is finished, and grabbing materials by hands to feel dry and not to be stuck on the hands;
s202, adding 10% of S201-well-kept material, 10% of maleic anhydride grafted SEBS, 10% of ethylene-octene copolymer with the melt index of 5g/10min measured at 230 ℃/2.16kg, 5% of ternary copolymer polypropylene with the melt index of 6g/10min measured at 230 ℃/2.16kg, 5% of talcum powder with the mesh number of 1500 and 5% of calcium carbonate with the mesh number of 1500 into a high-speed mixer for physical mixing for 3 min;
(3) preparing a surface layer material of a styrene thermoplastic elastomer:
s301, mixing 65% of SEBS and 70mm of kinematic viscosity at 40 ℃ according to mass percentage2Stone of/sAdding 10% of wax oil into a high-speed mixer for physical mixing, wherein the mixing time is 3min, standing for 4h after the mixing is finished, and grabbing materials by hands to feel dry and not to be stuck on the hands;
s302, adding the S301 well-standing material, 10% of maleic anhydride grafted SEBS, 5% of ethylene-octene copolymer with the melt index of 5g/10min measured at 230 ℃/2.16kg, 3% of talcum powder with the mesh number of 1500 meshes, 2% of PA, 3% of silicone and 2% of color master batch into a high-speed mixer for physical mixing for 3 min;
the mass ratio of the TPS bottom layer material to the TPS middle layer material to the TPS surface layer material is 1: 1: 1;
(4) preparing a base fabric layer
S401, placing a polyester knitted fabric base cloth on a base cloth winding roller of an auxiliary machine roller of multilayer co-extrusion casting compounding equipment;
(5) artificial leather for preparing styrene thermoplastic elastomer
S501, referring to FIG. 2, adding the styrene thermoplastic elastomer bottom layer material prepared in the step (1) into a feeding bin of a double-screw extruder C (a stably cast film layer is positioned on the lowest layer) of a multi-layer co-extrusion casting compounding device; adding the styrene thermoplastic elastomer intermediate layer material prepared in the step (2) into a feeding bin of a double-screw extruder B (a stably cast film layer is positioned in the intermediate layer) of the multilayer co-extrusion casting compounding equipment; adding the surface layer material of the styrene thermoplastic elastomer prepared in the step (3) into a feeding bin of a double-screw extruder A (the stably cast film layer is positioned at the uppermost layer) of the multilayer co-extrusion casting compounding equipment; simultaneously starting a double-screw extruder A, B, C, setting the temperature of the extruder at 160-200 ℃, setting the diameter of the double-screw extruder at 30mm and the rotating speed at 100rpm, and preparing the total thickness of the resin layer to be about 300 mu m;
s502, unreeling the base cloth while stably casting a film layer at a flat die head die lip of the multilayer co-extrusion casting compounding device, simultaneously compressing a casting roller and an embossing roller, hot-pressing and compounding the resin layer and the base cloth layer, continuously stretching the resin layer and the base cloth layer through a traction roller and a tension roller, and reeling the resin layer and the base cloth layer through a reeling roller to prepare the styrene thermoplastic elastomer artificial leather.
The TPS artificial leather prepared by the method is subjected to performance detection, and the detection result is shown in Table 1.
The foaming agent can be added into the middle layer of the styrene thermoplastic elastomer, and the foamed styrene thermoplastic elastomer artificial leather is prepared through a foaming step.
In addition, the breathable porous artificial leather can be prepared through a subsequent punching process, so that the breathability of the artificial leather is improved.
Example 2
The TPS artificial leather is prepared as follows:
(1) preparing TPS bottom layer materials:
s101, drying 100 percent of polyurethane and SEBS segmented copolymer in a forced air drying oven at 80 ℃ for 3 hours for later use;
(2) preparing a TPS middle layer material:
s201, mixing SEBS 65% by mass and 70mm of kinematic viscosity at 40 DEG C2Adding 10% of paraffin oil/s into a high-speed mixer for physical mixing, wherein the mixing time is 3min, standing for 4h after the mixing is finished, and grabbing materials by hands to feel dry and not to be stuck on the hands;
s202, adding the material which is well stood in the S201, 10% of polyurethane-SEBS block copolymer, 5% of ethylene-octene copolymer with the melt index of 5g/10min measured at 230 ℃/2.16kg, 5% of ternary copolymer polypropylene with the melt index of 6g/10min measured at 230 ℃/2.16kg, 3% of talcum powder with the mesh number of 1500 meshes and 2% of calcium carbonate with the mesh number of 1500 meshes into a high-speed mixer for physical mixing for 3 min;
(3) preparing a TPS surface layer material:
s301, mixing 68 percent of SEBS and 70mm of kinematic viscosity at 40 ℃ according to mass percentage2Adding 8% of paraffin oil/s into a high-speed mixer for physical mixing, wherein the mixing time is 3min, standing for 4h after the mixing is finished, and grabbing materials by hands to feel dry and not to be stuck on the hands;
s302, adding the S301 well-placed material, 5% of an ethylene-octene copolymer with a melt index of 5g/10min, 3% of talcum powder with a mesh number of 1500 meshes, 2% of PA, 2% of silicone and 2% of color master batch into a high-speed mixer for physical mixing, wherein the melt index is measured at 230 ℃/2.16kg under the conditions of 10% of polyurethane and SEBS block copolymer, and the mixing time is 3 min;
the mass ratio of the TPS bottom layer material to the TPS middle layer material to the TPS surface layer material is 1: 1: 1;
(4) preparing a base fabric layer
S401, placing a polyester knitted fabric base cloth on a base cloth winding roller of an auxiliary machine roller of multilayer co-extrusion casting compounding equipment;
(5) preparation of TPS Artificial leather
S501, adding the styrene thermoplastic elastomer bottom layer material prepared in the step (1) into a feeding bin of a double-screw extruder C (a stably cast film layer is positioned on the lowest layer) of a multi-layer co-extrusion casting compounding device; adding the styrene thermoplastic elastomer intermediate layer material prepared in the step (2) into a feeding bin of a double-screw extruder B (a stably cast film layer is positioned in the intermediate layer) of the multilayer co-extrusion casting compounding equipment; adding the surface layer material of the styrene thermoplastic elastomer prepared in the step (3) into a feeding bin of a double-screw extruder A (the stably cast film layer is positioned at the uppermost layer) of the multilayer co-extrusion casting compounding equipment; simultaneously starting a double-screw extruder A, B, C, setting the temperature of the extruder at 160-200 ℃, setting the diameter of the double-screw extruder at 30mm and the rotating speed at 100rpm, and preparing the total thickness of the resin layer to be about 300 mu m;
s502, unreeling the base cloth while stably casting a film layer at a flat die head die lip of the multilayer co-extrusion casting compounding device, simultaneously pressing a casting roller and an embossing roller to compound the resin layer and the base cloth layer in a hot-pressing mode, continuously stretching the resin layer and the base cloth layer through a traction roller and a tension roller, and reeling the resin layer and the base cloth layer through a reeling roller to obtain the TPS artificial leather.
The TPS artificial leather prepared by the method is subjected to performance detection, and the detection result is shown in Table 1.
Example 3
The TPS artificial leather is prepared as follows:
(1) preparing TPS bottom layer materials:
s101, drying 100 percent of polyurethane and SEBS segmented copolymer in a forced air drying oven at 80 ℃ for 3 hours for later use;
(2) preparing a TPS middle layer material:
s201, preparing SEPS at 55% and 40 ℃ according to mass percentageKinematic viscosity of 100mm2Adding 10% of paraffin oil/s into a high-speed mixer for physical mixing, wherein the mixing time is 3min, standing for 4h after the mixing is finished, and grabbing materials by hands to feel dry and not to be stuck on the hands;
s202, adding the material which is well kept in the S201, 10% of an ethylene-octene copolymer with the melt index of 5g/10min measured under the condition of 230 ℃/2.16kg, 10% of a terpolymer polypropylene with the melt index of 6g/10min measured under the condition of 230 ℃/2.16kg, 5% of talcum powder with the mesh number of 1500 meshes and 5% of calcium carbonate with the mesh number of 1500 meshes into a high-speed mixer for physical mixing for 3 min;
(3) preparing a TPS surface layer material:
s301, according to the mass percentage, 65 percent of SEPS and 100mm of kinematic viscosity at 40 DEG C2Adding 10% of paraffin oil/s into a high-speed mixer for physical mixing, wherein the mixing time is 3min, standing for 4h after the mixing is finished, and grabbing materials by hands to feel dry and not to be stuck on the hands;
s302, adding the S301 well-placed material, 5% of an ethylene-octene copolymer with a melt index of 5g/10min, 3% of talcum powder with a mesh number of 1500 meshes, 2% of PA, 3% of silicone and 2% of color master batch into a high-speed mixer for physical mixing, wherein the melt index is measured at 230 ℃/2.16kg under the conditions of 10% of polyurethane and SEBS block copolymer, and the mixing time is 3 min;
the mass ratio of the TPS bottom layer material to the TPS middle layer material to the TPS surface layer material is 1: 1: 1;
(4) preparing a base fabric layer
S401, placing a polyester knitted fabric base cloth on a base cloth winding roll of an auxiliary machine roll of multilayer co-extrusion casting compounding equipment;
(5) preparation of TPS Artificial leather
S501, adding the styrene thermoplastic elastomer bottom layer material prepared in the step (1) into a feeding bin of a double-screw extruder C (a stably cast film layer is positioned on the lowest layer) of a multi-layer co-extrusion casting compounding device; adding the styrene thermoplastic elastomer intermediate layer material prepared in the step (2) into a feeding bin of a double-screw extruder B (a stably cast film layer is positioned in the intermediate layer) of the multilayer co-extrusion casting compounding equipment; adding the surface layer material of the styrene thermoplastic elastomer prepared in the step (3) into a feeding bin of a double-screw extruder A (the stably cast film layer is positioned at the uppermost layer) of the multilayer co-extrusion casting compounding equipment; simultaneously starting a double-screw extruder A, B, C, setting the temperature of the extruder at 160-200 ℃, setting the diameter of the double-screw extruder at 30mm and the rotating speed at 100rpm, and preparing the total thickness of the resin layer to be about 300 mu m;
s502, unreeling the base cloth while stably casting a film layer at a flat die head die lip of the multilayer co-extrusion casting compounding device, simultaneously pressing a casting roller and an embossing roller to compound the resin layer and the base cloth layer in a hot-pressing mode, continuously stretching the resin layer and the base cloth layer through a traction roller and a tension roller, and reeling the resin layer and the base cloth layer through a reeling roller to obtain the TPS artificial leather.
The TPS artificial leather prepared by the method is subjected to performance detection, and the detection result is shown in Table 1.
Example 4
The TPS artificial leather is prepared as follows:
(1) preparing TPS bottom layer materials:
s101, drying 50 percent of polyurethane-SEBS block copolymer and 50 percent of maleic anhydride grafted SEBS in a forced air drying oven at 80 ℃ for 3 hours;
s102, placing the dried polarized thermoplastic elastomer into a high-speed mixer, and uniformly mixing for later use;
(2) preparing a TPS middle layer material:
s201, mixing SEBS 55% by mass and SEBS 70mm in kinematic viscosity at 40 DEG C2Adding 10% of paraffin oil/s into a high-speed mixer for physical mixing, wherein the mixing time is 3min, standing for 4h after the mixing is finished, and grabbing materials by hands to feel dry and not to be stuck on the hands;
s202, adding 10% of S201-well-kept material, 10% of maleic anhydride grafted SEBS, 10% of ethylene-octene copolymer with the melt index of 5g/10min measured at 230 ℃/2.16kg, 5% of ternary copolymer polypropylene with the melt index of 6g/10min measured at 230 ℃/2.16kg, 5% of talcum powder with the mesh number of 1500 and 5% of calcium carbonate with the mesh number of 1500 into a high-speed mixer for physical mixing for 3 min;
(3) preparing a TPS surface layer material:
s301, mixing 65% of SEBS and 70mm of kinematic viscosity at 40 ℃ according to mass percentage2Adding 10% of paraffin oil/s into a high-speed mixer for physical mixing, wherein the mixing time is 3min, standing for 4h after the mixing is finished, and grabbing materials by hands to feel dry and not to be stuck on the hands;
s302, adding the S301 well-standing material, 10% of maleic anhydride grafted SEBS, 5% of ethylene-octene copolymer with the melt index of 5g/10min measured at 230 ℃/2.16kg, 3% of talcum powder with the mesh number of 1500 meshes, 2% of PA, 3% of silicone and 2% of color master batch into a high-speed mixer for physical mixing for 3 min;
the mass ratio of the TPS bottom layer material to the TPS middle layer material to the TPS surface layer material is 1: 1: 1;
(4) preparing a base fabric layer
S401, placing a polyester knitted fabric base cloth on a base cloth winding roller of an auxiliary machine roller of multilayer co-extrusion casting compounding equipment;
(5) preparation of TPS Artificial leather
S501, adding the styrene thermoplastic elastomer bottom layer material prepared in the step (1) into a feeding bin of a double-screw extruder C (a stably cast film layer is positioned on the lowest layer) of a multi-layer co-extrusion casting compounding device; adding the styrene thermoplastic elastomer intermediate layer material prepared in the step (2) into a feeding bin of a double-screw extruder B (a stably cast film layer is positioned in the intermediate layer) of the multilayer co-extrusion casting compounding equipment; adding the surface layer material of the styrene thermoplastic elastomer prepared in the step (3) into a feeding bin of a double-screw extruder A (the stably cast film layer is positioned at the uppermost layer) of the multilayer co-extrusion casting compounding equipment; simultaneously starting a double-screw extruder A, B, C, setting the temperature of the extruder at 160-200 ℃, setting the diameter of the double-screw extruder at 30mm and the rotating speed at 100rpm, and preparing the total thickness of the resin layer to be about 300 mu m;
s502, unreeling the base cloth while stably casting a film layer at a flat die head die lip of the multilayer co-extrusion casting compounding device, simultaneously pressing a casting roller and an embossing roller to compound the resin layer and the base cloth layer in a hot-pressing mode, continuously stretching the resin layer and the base cloth layer through a traction roller and a tension roller, and reeling the resin layer and the base cloth layer through a reeling roller to obtain the TPS artificial leather.
The TPS artificial leather prepared by the method is subjected to performance detection, and the detection result is shown in Table 1.
Example 5
The TPS artificial leather is prepared as follows:
(1) preparing TPS bottom layer materials:
s101, drying 100% of maleic anhydride grafted SEBS in a forced air drying oven at 80 ℃ for 3h for later use;
(2) preparing a TPS middle layer material:
s201, mixing SEBS 30 wt%, SEPS25 wt% and 70mm kinematic viscosity at 40 deg.c2Adding 10% of paraffin oil/s into a high-speed mixer for physical mixing, wherein the mixing time is 3min, standing for 4h after the mixing is finished, and grabbing materials by hands to feel dry and not to be stuck on the hands;
s202, adding 10% of S201-well-kept material, 10% of maleic anhydride grafted SEBS, 10% of ethylene-octene copolymer with the melt index of 5g/10min measured at 230 ℃/2.16kg, 5% of ternary copolymer polypropylene with the melt index of 6g/10min measured at 230 ℃/2.16kg, 5% of talcum powder with the mesh number of 1500 and 5% of calcium carbonate with the mesh number of 1500 into a high-speed mixer for physical mixing for 3 min;
(3) preparing a TPS surface layer material:
s301, mixing SEBS 35 wt%, SEPS30 wt% and 70mm kinematic viscosity at 40 deg.c2Adding 10% of paraffin oil/s into a high-speed mixer for physical mixing, wherein the mixing time is 3min, standing for 4h after the mixing is finished, and grabbing materials by hands to feel dry and not to be stuck on the hands;
s302, adding the S301 well-standing material, 10% of maleic anhydride grafted SEBS, 5% of ethylene-octene copolymer with the melt index of 5g/10min measured at 230 ℃/2.16kg, 3% of talcum powder with the mesh number of 1500 meshes, 2% of PA, 3% of silicone and 2% of color master batch into a high-speed mixer for physical mixing for 3 min;
the mass ratio of the TPS bottom layer material to the TPS middle layer material to the TPS surface layer material is 1: 1: 1;
(4) preparing a base fabric layer
S401, placing a polyester knitted fabric base cloth on a base cloth winding roller of an auxiliary machine roller of multilayer co-extrusion casting compounding equipment;
(5) preparation of TPS Artificial leather
S501, adding the styrene thermoplastic elastomer bottom layer material prepared in the step (1) into a feeding bin of a double-screw extruder C (a stably cast film layer is positioned on the lowest layer) of a multi-layer co-extrusion casting compounding device; adding the styrene thermoplastic elastomer intermediate layer material prepared in the step (2) into a feeding bin of a double-screw extruder B (a stably cast film layer is positioned in the intermediate layer) of the multilayer co-extrusion casting compounding equipment; adding the surface layer material of the styrene thermoplastic elastomer prepared in the step (3) into a feeding bin of a double-screw extruder A (the stably cast film layer is positioned at the uppermost layer) of the multilayer co-extrusion casting compounding equipment; simultaneously starting a double-screw extruder A, B, C, setting the temperature of the extruder at 160-200 ℃, setting the diameter of the double-screw extruder at 30mm and the rotating speed at 100rpm, and preparing the total thickness of the resin layer to be about 300 mu m;
s502, unreeling the base cloth while stably casting a film layer at a flat die head die lip of the multilayer co-extrusion casting compounding device, simultaneously compressing a casting roller and an embossing roller, hot-pressing and compounding the resin layer and the base cloth layer, continuously stretching the resin layer and the base cloth layer through a traction roller and a tension roller, and reeling the resin layer and the base cloth layer through a reeling roller to prepare the styrene thermoplastic elastomer artificial leather.
The TPS artificial leather prepared by the method is subjected to performance detection, and the detection result is shown in Table 1.
Example 6
The TPS artificial leather is prepared as follows:
(1) preparing TPS bottom layer materials:
s101, drying 100 percent of polyurethane and SEPS segmented copolymer in a forced air drying oven at 80 ℃ for 3 hours for later use;
(2) preparing a TPS middle layer material:
s201, according to the mass percentage, 65 percent of SEPS is mixed, and the kinematic viscosity at 40 ℃ is 70mm2Adding 10% of paraffin oil/s into a high-speed mixer for physical mixing, wherein the mixing time is 3min, standing for 4h after the mixing is finished, and grabbing materials by hands to feel dry and not to be stuck on the hands;
s202, adding the material which is well stood in the S201, 10% of polyurethane-SEPS block copolymer, 5% of ethylene-octene copolymer with the melt index of 5g/10min measured at 230 ℃/2.16kg, 5% of terpolymer polypropylene with the melt index of 6g/10min measured at 230 ℃/2.16kg, 3% of talcum powder with the mesh number of 1500 meshes and 2% of calcium carbonate with the mesh number of 1500 meshes into a high-speed mixer for physical mixing for 3 min;
(3) preparing a TPS surface layer material:
s301, according to mass percent, 68 percent of SEPS is mixed, and the kinematic viscosity at 40 ℃ is 70mm2Adding 8% of paraffin oil/s into a high-speed mixer for physical mixing, wherein the mixing time is 3min, standing for 4h after the mixing is finished, and grabbing materials by hands to feel dry and not to be stuck on the hands;
s302, adding the material which is well stood in the S301, 5% of an ethylene-octene copolymer with the melt index of 5g/10min, 3% of talcum powder with the mesh number of 1500 meshes, 2% of PA, 2% of silicone and 2% of color master batch which are measured under the conditions of 10% of polyurethane and SEPS block copolymer, 230 ℃/2.16kg, and physically mixing for 3 min;
the mass ratio of the TPS bottom layer material to the TPS middle layer material to the TPS surface layer material is 1: 1: 1;
(4) preparing a base fabric layer
S401, placing a polyester knitted fabric base cloth on a base cloth winding roller of an auxiliary machine roller of multilayer co-extrusion casting compounding equipment;
(5) preparation of TPS Artificial leather
S501, adding the styrene thermoplastic elastomer bottom layer material prepared in the step (1) into a feeding bin of a double-screw extruder C (a stably cast film layer is positioned on the lowest layer) of a multi-layer co-extrusion casting compounding device; adding the styrene thermoplastic elastomer intermediate layer material prepared in the step (2) into a feeding bin of a double-screw extruder B (a stably cast film layer is positioned in the intermediate layer) of the multilayer co-extrusion casting compounding equipment; adding the surface layer material of the styrene thermoplastic elastomer prepared in the step (3) into a feeding bin of a double-screw extruder A (the stably cast film layer is positioned at the uppermost layer) of the multilayer co-extrusion casting compounding equipment; simultaneously starting a double-screw extruder A, B, C, setting the temperature of the extruder at 160-200 ℃, setting the diameter of the double-screw extruder at 30mm and the rotating speed at 100rpm, and preparing the total thickness of the resin layer to be about 300 mu m;
s502, unreeling the base cloth while stably casting a film layer at a flat die head die lip of the multilayer co-extrusion casting compounding device, simultaneously pressing a casting roller and an embossing roller to compound the resin layer and the base cloth layer in a hot-pressing mode, continuously stretching the resin layer and the base cloth layer through a traction roller and a tension roller, and reeling the resin layer and the base cloth layer through a reeling roller to obtain the TPS artificial leather.
The TPS artificial leather prepared by the method is subjected to performance detection, and the detection result is shown in Table 1.
TABLE 1
Figure BDA0002535355540000141
Remarking:
1. the surface appearance was a panel consisting of 10 evaluators who measured whether the difference in gloss on the surface of artificial leather could be visually sensed by humans, and if the number of persons considered to have the difference in gloss was 5 or more, it was defined as having the difference in gloss and was described as "poor appearance", and when the number of persons considered to have the difference in gloss was less than 5, it was defined as having no difference in gloss and was described as "excellent appearance".
2. The sense of touch was directly touched by the hands of the experts inside the artificial leather to evaluate the degree of relative softness. Three grades are divided: very soft, flat touch.
The results show that the TPS artificial leather prepared by mixing the raw materials such as the styrene thermoplastic elastomer, the filling oil, the polarized styrene thermoplastic elastomer and the like through the melt coextrusion processing of the multilayer coextrusion casting compounding equipment reaches and exceeds the use standard, is green and environment-friendly, and has high production efficiency.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (10)

1. An environment-friendly styrene thermoplastic elastomer artificial leather is characterized in that: the artificial leather with the thermoplastic elastomer comprises a resin layer and a base cloth layer, wherein the resin layer comprises a styrene-based thermoplastic elastomer bottom layer, a styrene-based thermoplastic elastomer middle layer and a styrene-based thermoplastic elastomer surface layer, and the styrene-based thermoplastic elastomer bottom layer is connected with the base cloth layer;
the styrene thermoplastic elastomer bottom layer consists of a polarized thermoplastic elastomer;
the styrene thermoplastic elastomer intermediate layer is prepared from the following components in percentage by mass: 50-70% of styrene thermoplastic elastomer, 10-15% of polarized styrene thermoplastic elastomer, 5-20% of filling oil, 5-20% of ethylene-octene copolymer, 5-10% of ternary copolymer polypropylene, 3-8% of talcum powder and 2-8% of calcium carbonate;
the surface layer of the styrene thermoplastic elastomer is prepared from the following components in percentage by mass: 60-75% of styrene thermoplastic elastomer, 5-10% of polarized styrene thermoplastic elastomer, 5-15% of filling oil, 5-20% of ethylene-octene copolymer, 3-8% of talcum powder, 2-8% of polyamide, 2-8% of silicone and 2-5% of color master batch.
2. The environment-friendly styrene-based thermoplastic elastomer artificial leather according to claim 1, characterized in that: the polarized thermoplastic elastomer is any one or the combination of more than two of maleic anhydride grafted styrene thermoplastic elastomer, polyurethane and styrene thermoplastic elastomer block copolymer and glycidyl methacrylate grafted styrene thermoplastic elastomer.
3. The environment-friendly styrene-based thermoplastic elastomer artificial leather according to claim 1, characterized in that: the styrene thermoplastic elastomer is one or two of hydrogenated styrene-butadiene-styrene block copolymer and hydrogenated styrene-isoprene-styrene block copolymer.
4. The environment-friendly styrene-based thermoplastic elastomer artificial leather according to claim 1, characterized in that: the base cloth layer is one of non-woven fabric, elastic cloth, superfine fiber cloth, plain woven fabric, polyester knitted fabric, nylon cloth and spunlace cloth.
5. The environment-friendly styrene-based thermoplastic elastomer artificial leather according to claim 1, characterized in that: the filling oil is paraffin oil or naphthenic oil, and the kinematic viscosity at 40 ℃ is 50-600 mm2(ii) a flash point of 250-300 ℃; the ethylene-octene copolymer has a melt index of 4-6 g/10min as measured according to ASTM D1238-04 at 230 ℃/2.16 kg; the Shore hardness of the ternary copolymer polypropylene is 75-90A according to GB/T2411-2008 standard test, and the melt index is 4-7 g/10min according to ASTM D1238-04 standard under the condition of 230 ℃/2.16 kg; the mesh number of the talcum powder and the calcium carbonate is 1500-3000 meshes.
6. The method for preparing the environment-friendly styrene-based thermoplastic elastomer artificial leather according to any one of claims 1 to 5, which is characterized by comprising the following steps:
(1) preparing a styrene thermoplastic elastomer base material:
s101, drying the polarized thermoplastic elastomer;
s102, if more than two types of the polarized thermoplastic elastomers are used, placing the dried polarized thermoplastic elastomers in parts by mass into a high-speed mixer, and uniformly mixing for later use;
(2) preparing a styrene thermoplastic elastomer intermediate layer material:
s201, adding a styrene thermoplastic elastomer and filling oil into a high-speed mixer according to mass percentage for physical mixing, and standing after mixing;
s202, adding the material which is well stood in the S201, a polarized styrene thermoplastic elastomer, an ethylene-octene copolymer, terpolymer polypropylene, talcum powder and calcium carbonate into a high-speed mixer together for physical mixing;
(3) preparing a surface layer material of a styrene thermoplastic elastomer:
s301, adding the styrene thermoplastic elastomer and the filling oil into a high-speed mixer according to the mass percentage for physical mixing, and standing after mixing;
s302, adding the material which is well stood in the S301, a polarized styrene thermoplastic elastomer, an ethylene-octene copolymer, talcum powder, polyamide, silicone and color master batch into a high-speed mixer together for physical mixing;
(4) preparing a base fabric layer
S401, placing a base cloth on a base cloth winding roll of an auxiliary machine roll of the multilayer co-extrusion casting compounding device;
(5) artificial leather for preparing styrene thermoplastic elastomer
S501, adding the styrene thermoplastic elastomer bottom layer material prepared in the step (1) into a feeding bin of a double-screw extruder C of a multilayer co-extrusion casting compounding device; adding the styrene thermoplastic elastomer intermediate layer material prepared in the step (2) into a feeding bin of a double-screw extruder B of the multilayer co-extrusion casting compounding equipment; adding the styrene thermoplastic elastomer surface layer material prepared in the step (3) into a feeding bin of a double-screw extruder A of the multilayer co-extrusion casting compounding equipment; simultaneously starting a double-screw extruder A, B, C, and setting the temperature of the extruder at 160-200 ℃;
s502, unreeling the base cloth while stably casting a film layer at a flat die head die lip of the multilayer co-extrusion casting compounding device, simultaneously compressing a casting roller and an embossing roller, hot-pressing and compounding the resin layer and the base cloth layer, continuously stretching the resin layer and the base cloth layer through a traction roller and a tension roller, and reeling the resin layer and the base cloth layer through a reeling roller to prepare the styrene thermoplastic elastomer artificial leather.
7. The method for preparing environment-friendly styrene-based thermoplastic elastomer artificial leather according to claim 6, wherein: foaming agent is added into the middle layer of the styrene thermoplastic elastomer, and the foamed styrene thermoplastic elastomer artificial leather is prepared through a foaming step.
8. The method for preparing environment-friendly styrene-based thermoplastic elastomer artificial leather according to claim 6, wherein: the breathable porous artificial leather is prepared through a subsequent punching process.
9. The method for preparing environment-friendly styrene-based thermoplastic elastomer artificial leather according to claim 6, wherein: the smooth flow extending film layer of the double-screw extruder A is positioned at the uppermost layer, the smooth flow extending film layer of the double-screw extruder B is positioned at the middle layer, and the smooth flow extending film layer of the double-screw extruder C is positioned at the lowermost layer.
10. The method for preparing environment-friendly styrene-based thermoplastic elastomer artificial leather according to claim 6, wherein: in the step (1), the drying temperature is 80 ℃, the drying time is 2-5 h, and the mixing time in a high-speed mixer is 2-5 min; in the step (2), mixing time in a high-speed mixer is 2-5 min, and standing time after mixing is more than 3 h; in the step (3), the mixing time in the high-speed mixer is 2-5 min, and the standing time after mixing is more than 3 h.
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CN112497873A (en) * 2020-11-25 2021-03-16 金华楠辉纺织专用设备有限公司 Novel elastic cloth and preparation method thereof
CN112537107A (en) * 2020-12-07 2021-03-23 江苏科美新材料有限公司 High-performance styrene-butadiene block copolymer-based superfine fiber synthetic leather and production method thereof
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