Resin composite material and artificial leather prepared from same

Abstract

The invention provides a resin composite material and artificial leather prepared from the same. The resin composite material comprises first resin and first polyolefin, the melting point of the first resin is greater than or equal to 110 DEG C; the first resin includes an olefin block copolymer and / or a modified nylon. According to the resin composite material disclosed by the invention, the first resin with a specific type and a melting point within a specific range is compounded with the first polyolefin, so that not only can the warping degree of the artificial leather be improved, but also the flexibility of the artificial leather is not influenced, and the artificial leather comprising the resin composite material has low normal and high temperature warping degree, low hardness and good high temperature resistance.

Description

Technical Field

[0001] This invention belongs to the field of artificial leather materials technology, specifically relating to a resin composite material and artificial leather prepared therefrom. Background Technology

[0002] Artificial leather is a material similar to genuine leather. Common artificial leathers include polyvinyl chloride (PVC) artificial leather and polyurethane (PU) artificial leather. They are prepared by laminating a PVC or polyurethane layer onto a base fabric layer and are widely used in clothing, automotive interiors, footwear, furniture, and bags. However, PVC has poor high-temperature resistance, unpleasant odor, and is not environmentally friendly; polyurethane has poor abrasion resistance. Especially in the relatively enclosed environment of automotive interiors where high abrasion resistance is required, existing artificial leather materials cannot adequately meet the needs. Therefore, thermoplastic polyolefin elastomer (TPO) artificial leather is more widely used due to its environmental friendliness and good mechanical properties.

[0003] However, conventional TPO synthetic leather has poor heat processing properties and is prone to warping under high-temperature conditions. To improve the warping problem of synthetic leather, TPO elastomers are usually blended with polyolefins for modification. For example, CN111361244A discloses a warping-resistant TPO synthetic leather, comprising a TPO outer layer and a sponge layer, wherein the TPO outer layer contains polypropylene, polyethylene, and TPO elastomer. Although the warping of the TPO synthetic leather is improved to some extent, it still needs further improvement. Furthermore, while blending TPO with polyolefins improves the warping, it also leads to material hardening, affecting the softness of the synthetic leather.

[0004] Therefore, developing a synthetic leather material that has good high-temperature aging resistance, low warpage and hardness, and good softness is an urgent problem to be solved in this field. Summary of the Invention

[0005] In view of the shortcomings of the existing technology, the purpose of this invention is to provide a resin composite material and artificial leather made therefrom; it solves the problem that artificial leather in the prior art cannot have both low warpage and low hardness, and has poor softness.

[0006] To achieve this objective, the present invention adopts the following technical solution:

[0007] In a first aspect, the present invention provides a resin composite material comprising a first resin and a first polyolefin; the first resin having a melting point ≥110°C; the first resin comprising an olefin block copolymer (OBC resin) and / or modified nylon (modified PA).

[0008] In this invention, a first resin of a specific type and with a melting point within a specific range is compounded with a first polyolefin, which can improve the warpage of artificial leather without affecting its softness. This results in artificial leather including the resin composite material having both low warpage at normal and high temperatures and low hardness, as well as good high-temperature resistance.

[0009] In this invention, the high temperature refers to 100-180℃.

[0010] Preferably, the mass ratio of the first resin to the first polyolefin is (1-4):1, wherein the specific values ​​of (1-4) can be 1, 1.2, 1.4, 1.6, 1.8, 2, 2.2, 2.4, 2.6, 2.8, 3, 3.2, 3.4, 3.6, 3.8, 4, etc., and preferably (2.8-3.8):1.

[0011] In this invention, the melting point of the first resin is ≥110℃, for example, it can be 110℃, 112℃, 114℃, 116℃, 118℃, 120℃, 122℃, 124℃, 126℃, 128℃, 130℃, 132℃, 134℃, 136℃, 138℃, 140℃, 142℃, 144℃, 145℃, 146℃, 148℃, etc.

[0012] Preferably, the melting point of the first resin is 118–132°C.

[0013] In this invention, the melting point of the first resin is within a specific range, which is beneficial to reduce the warpage of the artificial leather and ensure that the artificial leather has good softness; if the melting point is too low, the warpage is high; if the melting point is too high, the hardness is high and the softness is poor.

[0014] Preferably, the first resin comprises an olefin block copolymer and modified nylon, wherein the mass ratio of the olefin block copolymer to the modified nylon is (1.4–2.8):1, and the specific values ​​of (1.4–2.8) can be, for example, 1.4, 1.45, 1.5, 1.55, 1.6, 1.65, 1.7, 1.75, 1.8, 1.85, 1.9, 1.95, 2, 2.05, 2.1, 2.15, 2.2, 2.25, 2.3, 2.35, 2.4, 2.45, 2.5, 2.55, 2.6, 2.65, 2.7, 2.75, 2.8, etc.

[0015] In this invention, the first resin is preferably a combination of olefin block copolymer and modified nylon, and the ratio of the two is within a specific range. The resulting artificial leather has lower high-temperature warpage, lower hardness, and better softness.

[0016] Preferably, the modified nylon comprises any one or a blend of at least two of the following: modified nylon 11 (modified poly(ω-aminodecanoyl, modified PA11), modified nylon 6 (modified polycaprolactam, modified PA6), modified nylon 56 (modified poly(pentanediamine adipate, modified PA56), modified nylon 1010 (modified poly(decanoyl decanediamine, modified PA1010), modified nylon 66 (modified poly(hexamethylene adipate, modified PA66), or modified nylon 12 (modified poly(dodecanoyl lactam, modified PA12), preferably including at least modified nylon 11.

[0017] Preferably, the modified nylon comprises second polyolefin modified nylon and / or dimer acid modified nylon.

[0018] Preferably, the second polyolefin or dimer acid is chemically bonded to nylon.

[0019] In this invention, taking a second polyolefin-modified nylon as an example, the modified nylon is obtained by reacting maleic anhydride-grafted polyolefin with nylon, and the second polyolefin-modified nylon has the structure shown in Formula I or Formula II:

[0020]

[0021] Where x is selected from an integer from 6 to 12; y is selected from an integer from 4 to 10; z is selected from an integer from 6 to 12. For example, when x is selected from 6, it represents PA6, that is, second polyolefin modified nylon 6; when y is selected from 6 and z is selected from 6, it represents PA66, that is, second polyolefin modified nylon 66, where the maleic anhydride group is linked to nylon through an amide bond; n is selected from an integer ≥ 1.

[0022] Preferably, the second polyolefin modified nylon comprises polyethylene modified nylon and / or polypropylene modified nylon.

[0023] Preferably, the modified nylon contains 25-50% by mass of the second polyolefin or dimer acid, for example, 25%, 26%, 27%, 28%, 29%, 30%, 31%, 32%, 33%, 34%, 35%, 36%, 37%, 38%, 39%, 40%, 41%, 42%, 43%, 44%, 45%, 46%, 47%, 48%, 49%, 50%, etc., more preferably 30-45%. Preferably, the first polyolefin includes polyethylene and / or polypropylene.

[0024] Preferably, the resin composite material further includes a toughening agent.

[0025] Preferably, the toughening agent in the resin composite material has a mass percentage content of 8-25%, for example, it can be 8%, 9%, 10%, 11%, 12%, 13%, 14%, 15%, 16%, 17%, 18%, 19%, 20%, 21%, 22%, 23%, 24%, 25%, etc.

[0026] In this invention, the addition of a toughening agent helps to further reduce the warpage and hardness of artificial leather at normal and high temperatures, ensuring that the artificial leather has good softness.

[0027] Preferably, the toughening agent comprises at least one of natural rubber (NR), ethylene propylene diene monomer (EPM), ethylene propylene diene monomer (EPDM), styrene-butadiene-styrene block copolymer (SBS), styrene-isoprene-styrene block copolymer (SIS), or a modified form of the aforementioned toughening agent.

[0028] In this invention, the aforementioned toughening agent refers to the natural rubber (NR), ethylene propylene diene monomer (EPM), ethylene propylene diene monomer (EPDM), styrene-butadiene-styrene block copolymer (SBS), and styrene-isoprene-styrene block copolymer (SIS) mentioned above.

[0029] Preferably, the modified toughening agent includes at least one of epoxy modified, methacrylate grafted modified, acrylonitrile grafted modified, or maleic anhydride grafted modified.

[0030] Preferably, the modifier of the toughening agent includes at least one of the following: epoxidized natural rubber (ENR), epoxy-modified styrene-isoprene-styrene block copolymer, methyl methacrylate (MMA) grafted styrene-isoprene-styrene block copolymer, butyl methacrylate (BMA) grafted styrene-isoprene-styrene block copolymer, acrylonitrile (AN) grafted styrene-isoprene-styrene block copolymer, maleic anhydride grafted hydrogenated styrene-butadiene-styrene block copolymer (SEBS-g-MAH), or maleic anhydride (MAH) grafted styrene-isoprene-styrene block copolymer.

[0031] Preferably, based on 100 parts by weight of the first resin and the first polyolefin, the resin composite material further includes 0.1 to 5 parts of other additives, such as 0.1, 0.2, 0.5, 1, 2, 3, 4, 5, etc.

[0032] Preferably, the other additives include any one or a combination of at least two of antioxidants, light stabilizers, or crosslinking agents.

[0033] In this invention, based on 100 parts by weight of the first resin and the first polyolefin, the resin composite material includes 0.1 to 0.5 parts of antioxidant; 0.2 to 0.6 parts of light stabilizer; and 0.5 to 1.5 parts of co-crosslinking agent.

[0034] Preferably, the antioxidant comprises any one or a mixture of at least two of N,N′-bis-[3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionyl]hexanediamine (antioxidant 1098), pentaerythritol tetrakis[β-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate] (antioxidant 1010), octadecyl β-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate (antioxidant 1076), tris(2,4-di-tert-butylphenyl) phosphite (antioxidant 168), pentaerythritol dioctadecyl phosphite (antioxidant 618), and 2,6-di-tert-butyl-p-cresol (antioxidant 264), preferably antioxidant 1010 and antioxidant 168.

[0035] Preferably, the light stabilizer includes The light stabilizer is any one or a mixture of at least two of the following: 7001EF, 622, 944, 123, and 3853, preferably. 7001EF.

[0036] Preferably, the crosslinking agent comprises any one or a mixture of at least two of triallyl cyanurate, trimethylolpropane triacrylate, trimethylolpropane trimethacrylate, and tetramethyltetraethyltetrasiloxane, preferably tetramethyltetraethyltetrasiloxane.

[0037] In this invention, the preparation method of the resin composite material includes: mixing the components evenly.

[0038] In a second aspect, the present invention provides an artificial leather comprising a base fabric layer and a surface layer; the material of the surface layer comprises a resin composite material according to the first aspect.

[0039] Preferably, the thickness of the surface layer is 100-250 μm, for example, it can be 100 μm, 110 μm, 120 μm, 140 μm, 160 μm, 180 μm, 200 μm, 220 μm, 240 μm, 250 μm, etc.

[0040] Preferably, the thickness of the base fabric layer is 150–300 μm, for example, it can be 150 μm, 160 μm, 180 μm, 200 μm, 220 μm, 240 μm, 250 μm, 260 μm, 280 μm, 300 μm, etc. In this invention, the base fabric layer includes cotton woven fabric, canvas, knitted fabric, napped fabric, nonwoven fabric, recycled fabric, plain weave fabric, bleached fabric, dyed plain weave fabric, nylon fabric, polyester fabric, etc.

[0041] Preferably, the material of the base fabric layer includes polyethylene terephthalate and / or a polyethylene terephthalate and polyethylene composite material with a core-skin structure; when selected from a polyethylene terephthalate and polyethylene composite material with a core-skin structure (PE / PET core-skin structure), the skin layer is a polyethylene skin layer, the core layer is a polyethylene terephthalate core layer, and the skin layer is far away from the surface layer.

[0042] In the PE / PET skin-core structure, the PE is grafted and modified with a silane coupling agent, and the crosslinking agent is fully absorbed into the grafted PE, which is beneficial to improving the compatibility between the base fabric layer and the surface layer. At the same time, during subsequent irradiation crosslinking, the PE graft material as the outer layer will also undergo a crosslinking reaction, which is beneficial to further improve the mechanical properties of the base fabric layer.

[0043] In this invention, the base fabric layer includes, but is not limited to, Yaolong Spunbond's ET-Z.

[0044] Thirdly, the present invention provides a method for preparing artificial leather according to the second aspect, the method comprising:

[0045] The artificial leather is obtained by layering the base fabric layer and the surface layer in sequence.

[0046] Preferably, the preparation method includes: mixing the resin composite material evenly, casting it to obtain the surface layer; and combining the surface layer with the base fabric layer and crosslinking it to obtain the artificial leather.

[0047] Preferably, the casting temperature is 100-180°C, for example, 100°C, 120°C, 140°C, 160°C, 180°C, etc.

[0048] Preferably, the crosslinking method includes crosslinking using electron beam irradiation.

[0049] Preferably, the energy of the electron beam irradiation is 200–440 keV, for example, 200 keV, 220 keV, 240 keV, 260 keV, 280 keV, 300 keV, 320 keV, 340 keV, 360 keV, 380 keV, 400 keV, 420 keV, 440 keV, etc.; the dose of the electron beam irradiation is 30–90 kGy, for example, 30 kGy, 35 kGy, 40 kGy, 45 kGy, 50 kGy, 55 kGy, 60 kGy, 65 kGy, 70 kGy, 75 kGy, 80 kGy, 85 kGy, 90 kGy, etc.

[0050] The numerical range described in this invention includes not only the point values ​​listed above, but also any point values ​​within the numerical ranges not listed above. Due to space limitations and for the sake of brevity, this invention will not exhaustively list all the specific point values ​​included in the range.

[0051] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0052] The resin composite material provided by the present invention uses a first resin of a specific type and a first polyolefin with a melting point within a specific range to be compounded, so that the artificial leather including the resin composite material has good high temperature resistance, low warpage under normal and high temperature conditions, low hardness, and good softness; the artificial leather prepared by the resin composite material has a warpage ≤0.8cm at room temperature, a warpage ≤1.8cm after treatment at 120℃ for 10min, and a hardness ≤102. Detailed Implementation

[0053] The technical solution of the present invention will be further illustrated below through specific embodiments. Those skilled in the art should understand that the embodiments described are merely illustrative of the present invention and should not be construed as limiting the invention in any way.

[0054] Example 1

[0055] This embodiment provides a resin composite material comprising OBC resin (DOW 9807, melting point 120°C) and polyethylene (melting point 90°C, leaf core material SF32Y) in a mass ratio of 4:1. Based on a total mass of 100 parts of OBC resin and polyethylene, it also comprises 1 part of tetramethyltetraethyltetrasiloxane, 0.1 parts of antioxidant 1010, 0.1 parts of antioxidant 168, and 0.2 parts of light stabilizer 622.

[0056] Example 2

[0057] This embodiment provides a resin composite material comprising polyethylene-modified PA11 and polyethylene (melting point 90℃, leaf core material SF32Y) in a mass ratio of 1:1. Based on a total mass of 100 parts of polyethylene-modified PA11 and polyethylene, it also includes 1 part of tetramethyltetraethyltetrasiloxane, 0.1 parts of antioxidant 1010, 0.1 parts of antioxidant 168, and 0.2 parts of light stabilizer 622. The polyethylene-modified PA11 has a melting point of 130℃ and a polyethylene mass percentage of 32%. The preparation method of the polyethylene-modified PA11 includes: grafting low molecular weight PA11 (number average molecular weight 8000 g / mol) and maleic anhydride-grafted PE (Mitsui Chemicals ADMER). TM The AT2397E was mixed evenly at a mass ratio of 68:32 and then extruded through a twin-screw extruder at 270℃. After granulation, it was dried at 100℃ and 0.08MPa for later use.

[0058] Example 3

[0059] This embodiment provides a resin composite material, comprising a first resin and polyethylene (melting point 90°C, core material SF32Y) in a mass ratio of 4:1; the first resin comprises OBC resin (DOW 9807, melting point 120°C) in a mass ratio of 1.67:1 and polyethylene-modified PA11, wherein the polyethylene-modified PA11 is the same as in Example 2.

[0060] Example 4

[0061] This embodiment provides a resin composite material comprising a first resin and polyethylene (melting point 90°C, core material SF32Y) in a mass ratio of 3:1; the first resin comprises OBC resin (DOW 9807, melting point 120°C) and polyethylene-modified PA11 in a mass ratio of 2:1, wherein the polyethylene-modified PA11 is the same as in Example 2; the resin composite material further comprises 20% maleic anhydride grafted modified SEBS (Kerteng FG1901) by mass percentage.

[0062] Example 5

[0063] This embodiment provides a resin composite material comprising a first resin and polyethylene (melting point 90°C, core material SF32Y) in a mass ratio of 3.5:1; the first resin comprises OBC resin (DOW 9807, melting point 120°C) in a mass ratio of 2.5:1 and polyethylene-modified PA11, wherein the polyethylene-modified PA11 is the same as in Example 2; the resin composite material further comprises 10% EPDM (SK S512F) by mass percentage.

[0064] Example 6

[0065] This embodiment provides a resin composite material, which differs from Example 5 only in that the polyethylene modified PA11 contains 42% polyethylene by mass, and the preparation method of the polyethylene modified PA11 uses a low molecular weight PA11 to maleic anhydride grafted PE by mass ratio of 58:42. Other components and amounts are the same as in Example 5.

[0066] Example 7

[0067] This embodiment provides a resin composite material, which differs from Example 5 only in that the total amount of OBC resin and polyethylene modified PA11 remains unchanged, the mass ratio is 1:1, and the other components and amounts are the same as in Example 5.

[0068] Example 8

[0069] This embodiment provides a resin composite material, which differs from Example 5 only in that the total amount of OBC resin and polyethylene modified PA11 remains unchanged, and the mass ratio is 3.4:1. The other components and amounts are the same as in Example 5.

[0070] Example 9

[0071] This embodiment provides a resin composite material, which differs from Example 5 only in that the polyethylene-modified PA11 is replaced with an equal mass of polyethylene-modified PA66. The preparation method and polyethylene content of the polyethylene-modified PA66 are the same as those of the polyethylene-modified PA11. The only difference is that PA11 is replaced with PA66. All other components and amounts are the same as those in Example 5.

[0072] Example 10

[0073] This embodiment provides a resin composite material, which differs from Example 5 only in that the polyethylene modified PA11 contains 22% polyethylene by mass, and the preparation method of the polyethylene modified PA11 uses a low molecular weight PA11 to maleic anhydride grafted PE by mass ratio of 78:22. Other components and amounts are the same as in Example 5.

[0074] Example 11

[0075] This embodiment provides a resin composite material, which differs from Example 5 only in that the polyethylene modified PA11 contains 52% polyethylene by mass, and the preparation method of the polyethylene modified PA11 uses a low molecular weight PA11 to maleic anhydride grafted PE by mass ratio of 48:52. Other components and amounts are the same as in Example 5.

[0076] Example 12

[0077] This embodiment provides a resin composite material, which differs from Embodiment 5 only in that the total mass of the first resin and polyethylene remains unchanged, the mass ratio is 0.5:1, and the other components, dosages, and proportions are the same as in Embodiment 5.

[0078] Example 13

[0079] This embodiment provides a resin composite material, which differs from Embodiment 5 only in that the total mass of the first resin and polyethylene remains unchanged, the mass ratio is 4.5:1, and the other components, dosages, and proportions are the same as in Embodiment 5.

[0080] Comparative Example 1

[0081] This comparative example provides a resin composite material, which differs from Example 1 only in that the OBC resin is replaced with an equal mass of TPO resin (Dow ENGAGE). TM8540 (melting point 104℃), other components, dosages, and ratios are the same as in Example 1.

[0082] Comparative Example 2

[0083] This comparative example provides a resin, which is a POE resin, Dow 8660.

[0084] Comparative Example 3

[0085] This comparative example provides a resin, which is a polypropylene resin, specifically Korean Yuhwa 4017M.

[0086] Comparative Example 4

[0087] This comparative example provides a resin, which is a TPO resin, Dow 8480.

[0088] Application examples

[0089] This application example provides an artificial leather comprising a base fabric layer (a 250 μm thick nonwoven fabric, Yaolong spunbond ET-Z) and a surface layer (150 μm thick) stacked sequentially; the surface layer is made of equal masses of the resin composite materials provided in Examples 1-13 and Comparative Examples 1-4.

[0090] The method for preparing the artificial leather includes: mixing the resin composite material evenly and casting it at 180°C to obtain the surface layer; composite a base fabric layer on the surface layer and crosslink it by electron beam irradiation, with an irradiation energy of 220 keV, an irradiation dose of 60 kGy, and an irradiation rate of 8 m / min to obtain the artificial leather.

[0091] Performance testing

[0092] (1) Warpage: Cut the obtained artificial leather into 10cm×10cm squares and measure the warpage of the artificial leather under normal temperature and high temperature conditions; the specific test method includes: placing the sample on a horizontal test table and measuring the vertical distance between the highest point of the warped edge and the test table.

[0093] Among them, the high temperature warpage test: the artificial leather is aged in an oven at 120℃ for 10 minutes, and after cooling to room temperature, the sample is placed on a horizontal test table, and the vertical distance between the highest point of the warped edge and the test table is measured.

[0094] (2) Hardness: The Shore hardness of artificial leather was tested according to GB / T2411-2008 standard.

[0095] The specific test results are shown in Table 1:

[0096] Table 1

[0097]

[0098] As shown in Table 1 and Examples 1-6, the resin composite material provided by the present invention uses a specific type of first resin with a melting point within a specific range to be compounded with polyolefin, so that the artificial leather including the resin composite material has a warpage of 0.4-0.8 cm at room temperature, and a warpage of 0.4-1.2 cm and a hardness of 59-68 after being treated at 120°C for 10 min.

[0099] As can be seen from the comparison between Example 1 and Comparative Example 1, the artificial leather obtained by compounding high-melting-point olefin block copolymer with polyolefin has lower warpage and better softness. As can be seen from Example 1 and Comparative Examples 2-4, the artificial leather obtained by using the resin composite material formulation provided by the present invention has lower warpage and better softness.

[0100] As can be seen from Examples 1, 2 and 3, the first resin is a combination of olefin block copolymer and modified nylon, which is beneficial to further improve the softness of artificial leather and reduce its high-temperature warpage.

[0101] As can be seen from Examples 5 and 7-13, when the mass ratio of the olefin block copolymer to the modified nylon, the content of the modifier in the modified nylon, and the mass ratio of the first resin to the first polyolefin are within a specific range, the softness of the artificial leather can be further improved and its high-temperature warpage reduced.

[0102] The applicant declares that the above description is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Those skilled in the art should understand that any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention fall within the protection and disclosure scope of the present invention.

Claims

1. A resin composite material, characterized by, The resin composite comprises a first resin and a first polyolefin; The melting point of the first resin is ≥ 110℃; The first resin comprises an olefin block copolymer and / or a modified nylon.

2. The resin composite material according to claim 1, characterized by The mass ratio of the first resin to the first polyolefin is (1-4):1, preferably (2.8-3.8):1; Preferably, the melting point of the first resin is 118-132℃.

3. The resin composite material according to claim 1 or 2, characterized by The first resin comprises an olefin block copolymer and a modified nylon, and the mass ratio of the olefin block copolymer to the modified nylon is (1.4-2.8):

1.

4. The resin composite material according to any one of claims 1 to 3, characterized by The modified nylon comprises any one or a combination of at least two of modified nylon 11, modified nylon 6, modified nylon 56, modified nylon 1010, modified nylon 66 or modified nylon 12, and preferably at least comprises modified nylon 11; Preferably, the modified nylon comprises a second polyolefin modified nylon and / or a dimer acid modified nylon; Preferably, the second polyolefin or dimer acid is connected to the nylon through a chemical bond; Preferably, the second polyolefin modified nylon has a structure shown in Formula I or Formula II: wherein x is an integer selected from 6-12; y is an integer selected from 4-10; z is an integer selected from 6-12; n is an integer ≥1; Preferably, the second polyolefin modified nylon comprises a polyethylene modified nylon and / or a polypropylene modified nylon; Preferably, the mass percentage of the second polyolefin or dimer acid in the modified nylon is 25-50%.

5. The resin composite material according to any one of claims 1 to 4, characterized by The first polyolefin comprises polyethylene and / or polypropylene.

6. The resin composite material according to any one of claims 1 to 5, characterized by The resin composite further comprises a toughening agent; Preferably, the mass percentage of the toughening agent in the resin composite is 8-25%; Preferably, the toughening agent comprises at least one of natural rubber, ethylene-propylene rubber, ethylene-propylene-diene rubber, styrene-butadiene-styrene block copolymer, styrene-isoprene-styrene block copolymer or a modified product of the foregoing toughening agent; Preferably, the modified product of the foregoing toughening agent comprises at least one of an epoxy modified product, a methacrylate grafted modified product, an acrylonitrile grafted modified product or a maleic anhydride grafted modified product; Preferably, the modified product of the toughening agent comprises at least one of epoxidized natural rubber, an epoxy modified styrene-isoprene-styrene block copolymer, a methyl methacrylate grafted styrene-isoprene-styrene block copolymer, a butyl methacrylate grafted styrene-isoprene-styrene block copolymer, an acrylonitrile grafted styrene-isoprene-styrene block copolymer or a maleic anhydride grafted styrene-isoprene-styrene block copolymer; Preferably, the resin composite further comprises 0.1-5 parts of other auxiliary agents based on 100 parts of the first resin and the first polyolefin; Preferably, the other auxiliary agents comprise any one or a combination of at least two of an antioxidant, a light stabilizer or a co-crosslinking agent. Preferably, the antioxidant comprises any one or mixture of at least two of N,N'-bis-[3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionyl]hexylenediamine, pentaerythrityl tetra-β-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate, octadecyl β-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate, tris(2,4-di-tert-butylphenyl)phosphite, pentaerythrityl diphosphite dioctadecyl ester, 2,6-di-tert-butyl-p-cresol, preferably pentaerythrityl tetra-β-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate and tris(2,4-di-tert-butylphenyl)phosphite; Preferably, the light stabilizer comprises 7001EF, any one of Light Stabilizer 622, Light Stabilizer 944, Light Stabilizer 123, Light Stabilizer 3853, or a mixture of at least two thereof, preferably 7001EF; Preferably, the co-crosslinking agent comprises any one or mixture of at least two of triallyl cyanurate, trimethylolpropane triacrylate, trimethylolpropane trimethacrylate, tetramethyltetraethyltetrasiloxane, preferably tetramethyltetraethyltetrasiloxane.

7. An artificial leather, characterized by, The artificial leather comprises a base cloth layer and a surface layer; The material of the surface layer comprises the resin composite material according to any one of claims 1-6.

8. The artificial leather according to claim 7, characterized by The thickness of the surface layer is 100-250 μm; Preferably, the thickness of the base cloth layer is 150-300 μm; Preferably, the material of the base cloth layer comprises polyethylene terephthalate and / or polyethylene terephthalate and polyethylene composite material with a skin-core structure.

9. A method for producing the artificial leather according to claim 7 or 8, characterized by, The preparation method comprises: Stacking the base cloth layer and the surface layer in sequence to obtain the artificial leather.

10. The method of claim 9, wherein, The preparation method comprises: uniformly mixing the resin composite material, casting to obtain the surface layer; and compounding the surface layer with the base cloth layer and crosslinking to obtain the artificial leather; Preferably, the temperature of the casting is 100-180 ℃; Preferably, the crosslinking method comprises electron beam irradiation crosslinking.

Images