Preparation method of high-elasticity anti-vibration SBS composite material for shoe sole

Abstract

The present application relates to the technical fields of styrene-butadiene-styrene, and disclose a kind of preparation method of high elasticity shock resistance SBS composite material for shoe sole, the grafting SBS modifier, graphene oxide, styrene-butadiene-styrene copolymer, polyurethane elastomer, K resin etc. are mixed, mixed, moulded, and high elasticity shock resistance SBS composite material UVR for shoe sole is obtained.The side chain of the grafting SBS modifier of the present application contains phthalic acid group, carbamate group, can interact with the hydroxyl group, carboxyl group on the surface of graphene oxide and the carbamate group of polyurethane elastomer, it is favorable to reduce the agglomeration of graphene, improve the compatibility between graphene and polyurethane elastomer and styrene-butadiene-styrene copolymer, significantly improve the tensile strength, elongation at break, resilience and other properties of SBS material.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of styrene-butadiene-styrene, in particular to a preparation method of a high-elasticity anti-vibration SBS composite material for shoe soles. BACKGROUND

[0002] Styrene-butadiene-styrene (SBS) is a thermoplastic elastomer with excellent performance, good tensile property, weather resistance, low-temperature resistance, electrical insulation and processing performance, and is widely applied in the fields of shoemaking, toys and daily necessities, sports and medical devices, etc. However, SBS has the problems of low strength and poor resilience, and its practical application is greatly limited.

[0003] Graphene is one of the nanomaterials with the highest strength at present, and also has good toughness, bending and high-temperature resistance, and is widely applied in high polymer materials. Generally, the agglomeration problem of graphene needs to be improved, and the compatibility with high polymer materials needs to be enhanced. Polyurethane elastomer has the advantages of high strength, high elasticity, tear resistance and aging resistance, and is widely applied in the toughening modification of rubber, plastic and other materials. The Chinese patent with the publication number CN112029295B discloses that star-shaped styrene-butadiene polymer SBS, partially hydrogenated styrene-butadiene polymer, mixing type polyurethane elastomer, glass microbead powder and nano calcium carbonate are used as raw materials to obtain a thermoplastic rubber shoe sole with good hardness and wear resistance. However, the tensile strength, tear strength and resilience of the SBS material are not improved. SUMMARY

[0004] (I) The technical problem solved by the application is to provide an SBS composite material with high mechanical strength and high elasticity for shoe soles.

[0005] (II) The technical scheme is a preparation method of a high-elasticity anti-vibration SBS composite material for shoe soles.

[0006] Step A: styrene-butadiene-styrene copolymer is added to toluene, stirred and dissolved, then 4-(methacrylic acid amine carbamate) phthalic acid grafting agent and dibenzoyl peroxide are added, heated to 65-85 DEG C in a nitrogen atmosphere, and stirred for 2-5 h of grafting reaction, then ethanol is added, filtered, and the product is placed in a Soxhlet extractor, extracted with acetone, dried, and the grafted SBS modifier is obtained.

[0007] Step B, graft SBS modifier is added into toluene, heated to 50-65℃, dissolved by stirring, graphene oxide is added, surface modification is carried out by stirring for 1-4h, distilled under reduced pressure, dried, then the mixture is mixed with styrene-butadiene-styrene copolymer, polyurethane elastomer, K resin, auxiliary agent in a high-speed mixer, then the material is added into a torque rheometer, mixed at 160-170℃ for 15-30min, finally hot pressed at 160-170℃ for 10-15min in a flat plate vulcanizing machine, the pressure is 10-12MPa, then cold pressed for 15-30min, the pressure is 7-10MPa, to obtain a high-elasticity anti-vibration SBS composite material for shoe sole (referred to as UVR).

[0008] Preferably, the mass ratio of styrene-butadiene-styrene copolymer, 4-(methyl methacrylate carbamic acid ethyl ester) phthalic acid grafting agent and dibenzoyl peroxide in step A is 100:(10-35):(0.4-1.5).

[0009] Preferably, the mass ratio of SBS modifier, graphene oxide, styrene-butadiene-styrene copolymer, polyurethane elastomer and K resin in step B is (1.2-4):(0.05-0.5):100:(10-30):(6-15).

[0010] Preferably, the auxiliary agent in step B is any one or combination of white mineral oil, paraffin wax and antioxidant.

[0011] Preferably, the preparation method of 4-(methyl methacrylate carbamic acid ethyl ester) phthalic acid grafting agent is: isocyanate methacrylate, 4-hydroxy phthalic acid and dibutyltin dilaurate are added into dichloromethane, toluene or tetrahydrofuran solvent in a mass ratio of 100:(118-130):(1.8-2.6), stirred at 20-40℃ for 2-5h, distilled under reduced pressure, washed with petroleum ether, the product is recrystallized in ethanol to obtain 4-(methyl methacrylate carbamic acid ethyl ester) phthalic acid grafting agent. The reaction formula is:

[0012]

[0013] (III) Technical effects of the present application: the present application uses 4-(methyl methacrylate carbamic acid ethyl ester) phthalic acid grafting agent to graft modify styrene-butadiene-styrene copolymer in solution to obtain graft SBS modifier, so that urethane groups and phthalic acid structures are introduced into the side chains of SBS. Then, styrene-butadiene-styrene copolymer is used as a base material, graphene oxide is used as a reinforcing filler, polyurethane elastomer is used as a toughening agent, mixed with K resin, white mineral oil and the like, and molded to obtain a high-elasticity anti-vibration SBS composite material UVR for shoe sole.

[0014] The side chain of the grafting SBS modifier of the present application contains phthalic acid groups, which can interact with the hydroxyl groups, carboxyl groups and the like on the surface of graphene, thereby modifying the grafting SBS modifier to the surface of graphene, which is beneficial to reducing the agglomeration of graphene, and the grafting SBS modifier has good compatibility with the styrene-butadiene-styrene copolymer, thereby improving the compatibility between graphene and the styrene-butadiene-styrene copolymer, making graphene have better reinforcing effect, and significantly improving the tensile strength, elongation at break, tear strength and the like of SBS.

[0015] The side chain of the grafting SBS modifier of the present application contains a large number of urethane groups, which can form hydrogen bonds and the like with the urethane groups in the polyurethane elastomer, so that the grafting SBS modifier can act as a compatibilizer, improving the compatibility between the polyurethane elastomer and the styrene-butadiene-styrene copolymer, making the polyurethane elastomer play a better reinforcing effect, and significantly improving the elongation at break, resilience and the like of the SBS material. DETAILED DESCRIPTION

[0016] The technical solutions in the embodiments of the present application will be clearly and completely described below in combination with the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0017] The styrene-butadiene-styrene copolymer SBS of the present application is model YH-188, Dongguan Longsheng Engineering Plastics Co., Ltd. The graphene oxide is product specification 0.5-3 pm, Zhongke Leiming (Beijing) Technology Co., Ltd. The white mineral oil is model 10#, Jinan Xinhuihang Chemical Co., Ltd. The K resin is model PB-5903, Dongguan Huayun Plastic Raw Material Co., Ltd. The polyurethane elastomer is model 3695AU, Dongguan Huayun Plastic Raw Material Co., Ltd.

[0018] Example 1

[0019] (1), 5g of isocyanatoethyl methacrylate, 6.5g of 4-hydroxyphthalic acid and 90mg of dibutyltin dilaurate were added to 50mL of toluene solvent, and stirred at 25℃ for 5h, distilled under reduced pressure, washed with petroleum ether, and the product was recrystallized in ethanol to obtain 4-(methacrylic acid urethane ethyl ester) phthalic acid grafting agent.

[0020] (2), to 250 mL of toluene, 20 g of styrene-butadiene-styrene copolymer was added, after stirring and dissolving, 2 g of 4-(methacrylamidoethyl carbamate) phthalic acid grafting agent, 0.08 g of dibenzoyl peroxide was added, heated to 85°C in a nitrogen atmosphere, and the grafting reaction was carried out for 2 h with stirring. After cooling, ethanol was added, and after filtration, the product was placed in a Soxhlet extractor and extracted with acetone for 24 h, dried to obtain a grafted SBS modifier.

[0021] (3), to 80 mL of toluene, 12 g of grafted SBS modifier was added, heated to 60°C, stirred and dissolved, 0.5 g of graphene oxide was added, and surface modification was carried out for 1 h with stirring. After distillation under reduced pressure, drying, the mixture was mixed with 1000 g of styrene-butadiene-styrene copolymer, 100 g of polyurethane elastomer, 120 g of K resin, 100 g of white mineral oil, 8 g of paraffin wax, and 5 g of antioxidant 1010 was added to a high-speed mixer, and then the material was added to a torque rheometer and mixed at 170°C for 20 min. Finally, in a flat plate vulcanizing machine, hot pressing was carried out at 170°C for 10 min at a pressure of 10 MPa, and then cold pressing was carried out for 30 min at a pressure of 8 MPa to obtain a high-elasticity shock-resistant SBS composite material UVR for shoe soles.

[0022] Example 2:

[0023] (1), to 50 mL of tetrahydrofuran solvent, 5 g of isocyanatoethyl methacrylate, 5.9 g of 4-hydroxyphthalic acid, and 130 mg of dibutyltin dilaurate were added, and the reaction was carried out at 20°C for 5 h with stirring. After distillation under reduced pressure, petroleum ether was washed, and the product was recrystallized in ethanol to obtain a 4-(methacrylamidoethyl carbamate) phthalic acid grafting agent.

[0024] (2), to 300 mL of toluene, 20 g of styrene-butadiene-styrene copolymer was added, after stirring and dissolving, 5 g of 4-(methacrylamidoethyl carbamate) phthalic acid grafting agent, 0.2 g of dibenzoyl peroxide was added, heated to 65°C in a nitrogen atmosphere, and the grafting reaction was carried out for 5 h with stirring. After cooling, ethanol was added, and after filtration, the product was placed in a Soxhlet extractor and extracted with acetone for 24 h, dried to obtain a grafted SBS modifier.

[0025] (3), to 100 mL of toluene, 25 g of grafted SBS modifier was added, heated to 50°C, stirred to dissolve, 3 g of graphene oxide was added, and surface modification was carried out for 4 h with stirring, and then distilled under reduced pressure, dried, and then the mixture was mixed with 1000 g of styrene-butadiene-styrene copolymer, 200 g of polyurethane elastomer, 60 g of K resin, 120 g of white mineral oil, 4 g of paraffin wax, and 8 g of antioxidant 1010 was added to a high-speed mixer, and then the material was added to a torque rheometer, and mixed at 160°C for 30 min, and finally in a flat plate vulcanizing machine, first hot pressing at 160°C for 15 min, with a pressure of 12 MPa; then cold pressing for 15 min, with a pressure of 10 MPa, to obtain a high-elasticity shock-resistant SBS composite material UVR for shoe soles.

[0026] Example 3:

[0027] (1), to 40 mL of dichloromethane solvent, 5 g of isocyanatoethyl methacrylate, 6.5 g of 4-hydroxyphthalic acid, and 110 mg of dibutyltin dilaurate were added, and stirred to react at 40°C for 2 h, distilled under reduced pressure, washed with petroleum ether, and the product was recrystallized in ethanol to obtain a 4-(methacrylate carbamoyl ethyl) phthalic acid grafting agent.

[0028] (2), to 300 mL of toluene, 20 g of styrene-butadiene-styrene copolymer was added, stirred to dissolve, then 7 g of 4-(methacrylate carbamoyl ethyl) phthalic acid grafting agent and 0.3 g of dibenzoyl peroxide were added, heated to 80°C in a nitrogen atmosphere, and stirred to graft for 5 h, then cooled and added to ethanol, filtered, and the product was placed in a Soxhlet extractor and extracted with acetone for 24 h, and dried to obtain a grafted SBS modifier.

[0029] (3), to 150 mL of toluene, 40 g of grafted SBS modifier was added, heated to 65°C, stirred to dissolve, 5 g of graphene oxide was added, and surface modification was carried out for 3 h with stirring, and then distilled under reduced pressure, dried, and then the mixture was mixed with 1000 g of styrene-butadiene-styrene copolymer, 300 g of polyurethane elastomer, 150 g of K resin, 50 g of white mineral oil, 6 g of paraffin wax, and 5 g of antioxidant 1010 was added to a high-speed mixer, and then the material was added to a torque rheometer, and mixed at 170°C for 20 min, and finally in a flat plate vulcanizing machine, first hot pressing at 170°C for 10 min, with a pressure of 10 MPa; then cold pressing for 20 min, with a pressure of 7 MPa, to obtain a high-elasticity shock-resistant SBS composite material UVR for shoe soles.

[0030] Comparative Example 1: The difference between this comparative example and Example 1 is that no grafted SBS modifier, graphene oxide, and polyurethane elastomer were added.

[0031] (1), 12 g of grafted SBS modifier, 1000 g of styrene-butadiene-styrene copolymer, 120 g of K resin, 100 g of white mineral oil, 8 g of paraffin wax, and 5 g of antioxidant 1010 were added to a high-speed mixer and mixed, and then the material was added to a torque rheometer and mixed at 170°C for 20 min. Finally, in a flat vulcanizing machine, hot pressing was performed at 170°C for 10 min at a pressure of 10 MPa, and then cold pressing was performed for 30 min at a pressure of 8 MPa to obtain an SBS composite material for shoe soles.

[0032] Comparative Example 2: The difference between this comparative example and Example 1 is that no graphene oxide and polyurethane elastomer were added.

[0033] (1), 12 g of grafted SBS modifier, 1000 g of styrene-butadiene-styrene copolymer, 120 g of K resin, 100 g of white mineral oil, 8 g of paraffin wax, and 5 g of antioxidant 1010 were added to a high-speed mixer and mixed, and then the material was added to a torque rheometer and mixed at 170°C for 20 min. Finally, in a flat vulcanizing machine, hot pressing was performed at 170°C for 10 min at a pressure of 10 MPa, and then cold pressing was performed for 30 min at a pressure of 8 MPa to obtain an SBS composite material for shoe soles.

[0034] Comparative Example 3: The difference between this comparative example and Example 1 is that no grafted SBS modifier and polyurethane elastomer were added.

[0035] (1), 12 g of grafted SBS modifier, 1000 g of styrene-butadiene-styrene copolymer, 120 g of K resin, 100 g of white mineral oil, 8 g of paraffin wax, and 5 g of antioxidant 1010 were added to a high-speed mixer and mixed, and then the material was added to a torque rheometer and mixed at 170°C for 20 min. Finally, in a flat vulcanizing machine, hot pressing was performed at 170°C for 10 min at a pressure of 10 MPa, and then cold pressing was performed for 30 min at a pressure of 8 MPa to obtain an SBS composite material for shoe soles.

[0036] Comparative Example 4: The difference between this comparative example and Example 1 is that no polyurethane elastomer was added.

[0037] (1), 12 g of grafted SBS modifier, 1000 g of styrene-butadiene-styrene copolymer, 120 g of K resin, 100 g of white mineral oil, 8 g of paraffin wax, and 5 g of antioxidant 1010 were added to a high-speed mixer and mixed, and then the material was added to a torque rheometer and mixed at 170°C for 20 min. Finally, in a flat vulcanizing machine, hot pressing was performed at 170°C for 10 min at a pressure of 10 MPa, and then cold pressing was performed for 30 min at a pressure of 8 MPa to obtain an SBS composite material for shoe soles.

[0038] Comparative Example 5: The difference between this comparative example and Example 1 is that no grafted SBS modifier and graphene oxide were added.

[0039] (1) 1000g of styrene-butadiene-styrene copolymer, 100g of polyurethane elastomer, 120g of K resin, 100g of white mineral oil, 8g of paraffin wax, and 5g of antioxidant 1010 were added to a high-speed mixer and mixed. Then the materials were added to a torque rheometer and mixed at 170°C for 20 minutes. Finally, in a flat vulcanizing machine, the materials were first hot-pressed at 170°C for 10 minutes at a pressure of 10MPa; then cold-pressed for 30 minutes at a pressure of 8MPa to obtain SBS composite material for shoe soles.

[0040] Comparative Example 6: The difference between this comparative example and Example 1 is that graphene oxide is not added.

[0041] (1) 12g of grafted SBS modifier, 1000g of styrene-butadiene-styrene copolymer, 100g of polyurethane elastomer, 120g of K resin, 100g of white mineral oil, 8g of paraffin wax, and 5g of antioxidant 1010 were added to a high-speed mixer and mixed. Then the materials were added to a torque rheometer and mixed at 170°C for 20 minutes. Finally, in a flat vulcanizing machine, the materials were first hot-pressed at 170°C for 10 minutes at a pressure of 10MPa, and then cold-pressed for 30 minutes at a pressure of 8MPa to obtain the SBS composite material for shoe soles.

[0042] Comparative Example 7: The difference between this comparative example and Example 1 is that no grafted SBS modifier was added.

[0043] (1) 0.5g graphene oxide, 1000g styrene-butadiene-styrene copolymer, 100g polyurethane elastomer, 120g K resin, 100g white mineral oil, 8g paraffin wax, and 5g antioxidant 1010 were added to a high-speed mixer and mixed. Then the materials were added to a torque rheometer and mixed at 170°C for 20 minutes. Finally, in a flat vulcanizing machine, the materials were first hot-pressed at 170°C for 10 minutes at a pressure of 10MPa, and then cold-pressed for 30 minutes at a pressure of 8MPa to obtain SBS composite material for shoe soles.

[0044] Comparative Example 8: The difference between this comparative example and Example 1 is that acrylic acid is used instead of 4-(urethane methacrylate) phthalic acid grafting agent.

[0045] (1) Into 250 mL of toluene, 20 g of styrene-butadiene-styrene copolymer was added, after stirring and dissolving, 2 g of acrylic acid, 0.08 g of dibenzoyl peroxide was added, heated to 85°C in a nitrogen atmosphere, and the grafting reaction was carried out for 2 h with stirring. After cooling, ethanol was added, and after filtration, the product was placed in a Soxhlet extractor and extracted with acetone for 24 h, dried, and the grafted SBS modifier was obtained.

[0046] (2) Into 80 mL of toluene, 12 g of grafted SBS modifier was added, heated to 60°C, stirred and dissolved, 0.5 g of graphene oxide was added, and surface modification was carried out for 1 h with stirring. After distillation under reduced pressure, drying, the mixture was mixed with 1000 g of styrene-butadiene-styrene copolymer, 100 g of polyurethane elastomer, 120 g of K resin, 100 g of white mineral oil, 8 g of paraffin wax, and 5 g of antioxidant 1010 in a high-speed mixer. Then the material was added to a torque rheometer and mixed at 170°C for 20 min. Finally, in a flat plate vulcanizing machine, hot pressing was carried out at 170°C for 10 min at a pressure of 10 MPa, and then cold pressing was carried out for 30 min at a pressure of 8 MPa to obtain an SBS composite material for shoe soles.

[0047] Tensile properties were tested according to GB / T 528-2009 standard. Tear strength was tested according to GB / T 529-2008 standard. Resilience was tested according to GB / T 1681-2009 standard.

[0048] Table 1: Test results

[0049]

[0050]

[0051] From Table 1, it can be seen that the tensile strength, elongation at break, tear strength and resilience of the SBS composite material of Comparative Example 1 are lower, and the mechanical properties and elasticity are not good.

[0052] Comparative Example 2 added grafted SBS modifier, which contains a styrene-butadiene-styrene main chain, and has good compatibility with styrene-butadiene-styrene copolymer. When added to the SBS material, it has little effect on the mechanical properties of the material, and the tensile strength and other properties of the SBS material are very similar to those of Comparative Example 1.

[0053] Examples 1-3 added graphene oxide, polyurethane elastomer and grafted SBS modifier, and the side chain of the modifier contains phthalic acid groups The grafted SBS modifier can be modified to the surface of graphene by interacting with the hydroxyl, carboxyl and the like on the surface of graphene, thereby reducing the aggregation of graphene. The grafted SBS modifier has good compatibility with styrene-butadiene-styrene copolymer, thereby improving the compatibility between graphene and styrene-butadiene-styrene copolymer, and the graphene has better reinforcing effect. The tensile strength, elongation at break, tear strength and the like of SBS are significantly improved. The side chain of the modifier contains a large number of urethane groups The grafted SBS modifier can be modified to the surface of graphene by interacting with the hydroxyl, carboxyl and the like on the surface of graphene, thereby reducing the aggregation of graphene. The grafted SBS modifier has good compatibility with styrene-butadiene-styrene copolymer, thereby improving the compatibility between graphene and styrene-butadiene-styrene copolymer, and the graphene has better reinforcing effect. The tensile strength, elongation at break, tear strength and the like of SBS are significantly improved. The side chain of the modifier contains a large number of urethane groups

[0054] The compatibility between the graphene and styrene-butadiene-styrene copolymer in Comparative Example 3 is poor, the graphene is easy to aggregate, and the reinforcing effect of the graphene on SBS material is poor, and the mechanical properties such as the tensile strength of SBS material are not obviously improved.

[0055] The compatibility between the graphene and styrene-butadiene-styrene copolymer in Comparative Example 3 is poor, the graphene is easy to aggregate, and the reinforcing effect of the graphene on SBS material is poor, and the mechanical properties such as the tensile strength of SBS material are not obviously improved.

[0056] The compatibility between the graphene and styrene-butadiene-styrene copolymer in Comparative Example 3 is poor, the graphene is easy to aggregate, and the reinforcing effect of the graphene on SBS material is poor, and the mechanical properties such as the tensile strength of SBS material are not obviously improved.

[0057] The compatibility between the graphene and styrene-butadiene-styrene copolymer in Comparative Example 3 is poor, the graphene is easy to aggregate, and the reinforcing effect of the graphene on SBS material is poor, and the mechanical properties such as the tensile strength of SBS material are not obviously improved.

[0058] The compatibility between the graphene and styrene-butadiene-styrene copolymer in Comparative Example 3 is poor, the graphene is easy to aggregate, and the reinforcing effect of the graphene on SBS material is poor, and the mechanical properties such as the tensile strength of SBS material are not obviously improved.

[0059] Comparative Example 8 uses acrylic acid to graft modify styrene-butadiene-styrene copolymer, the obtained grafted SBS modifier only contains carboxyl groups, does not contain phthalic groups, the interaction force between the hydroxyl groups and the carboxyl groups on the surface of graphene oxide is low, and does not contain urethane groups, the interaction force between the polyurethane elastomer is also low, and the compatibility between graphene oxide, polyurethane elastomer and styrene-butadiene-styrene copolymer is not improved well, resulting in that the tensile strength and resilience of the SBS material are lower than those of Example 1.

Claims

1. A method for preparing a high-elasticity anti-vibration SBS composite material for shoe soles, characterized by, The preparation method comprises the following steps: Step A, adding styrene-butadiene-styrene copolymer into toluene, stirring and dissolving, then adding 4-(methacrylate urethane) phthalic acid grafting agent and dibenzoyl peroxide, stirring and carrying out grafting reaction in nitrogen atmosphere, then adding ethanol after cooling, filtering, extracting in Soxhlet extractor, drying to obtain grafted SBS modifier; Step B, adding grafted SBS modifier into toluene, stirring and dissolving after heating, adding graphene oxide, stirring and carrying out surface modification, distilling under reduced pressure, drying, then mixing the mixture with styrene-butadiene-styrene copolymer, polyurethane elastomer, K resin and auxiliary agent in high-speed mixer, then mixing the materials in torque rheometer, finally carrying out molding in flat plate vulcanizing machine to obtain high-elasticity anti-vibration SBS composite material for shoe sole; The mass ratio of styrene-butadiene-styrene copolymer, 4-(methacrylate urethane) phthalic acid grafting agent and dibenzoyl peroxide in step A is 100:(10-35):(0.4-1.5); The mass ratio of SBS modifier, graphene oxide, styrene-butadiene-styrene copolymer, polyurethane elastomer and K resin in step B is (1.2-4):(0.05-0.5):100:(10-30):(6-15); The preparation method of 4-(methacrylate urethane) phthalic acid grafting agent is as follows: adding isocyanate methacrylate, 4-hydroxy phthalic acid and dibutyltin dilaurate with a mass ratio of 100:(118-130):(1.8-2.6) into solvent, stirring and reacting at 20-40℃ for 2-5h, distilling under reduced pressure, washing, recrystallizing to obtain 4-(methacrylate urethane) phthalic acid grafting agent; The auxiliary agent in step B is any one or combination of white mineral oil, paraffin and antioxidant; and / or the solvent is dichloromethane, toluene or tetrahydrofuran.

2. The method for preparing the high-elasticity shock-resistant SBS composite material for shoe soles according to claim 1, characterized in that, The temperature of grafting reaction in step A is 65-85℃, and the reaction time is 2-5h.

3. The method for preparing the high-elasticity shock-resistant SBS composite material for shoe soles according to claim 1, characterized in that, The temperature of heating and stirring in step B is 50-65℃, and the surface modification time is 1-4h.

4. The method for preparing the high-elasticity shock-resistant SBS composite material for shoe soles according to claim 1, characterized in that, The temperature of mixing in step B is 160-170℃, and the time is 15-30min.

5. The method for preparing the high-elasticity shock-resistant SBS composite material for shoe soles according to claim 1, characterized in that, The molding in step B is hot pressing at 160-170℃ for 10-15min with a pressure of 10-12MPa, and then cold pressing for 15-30min with a pressure of 7-10MPa.

6. A high-elasticity anti-vibration SBS composite material for shoe sole prepared by the preparation method in any one of claims 1-5.

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