Hybrid antistatic EPDM composite foamed material and preparation method thereof

Abstract

The application discloses a kind of hybrid antistatic EPDM composite foamed materials and preparation method thereof, belong to polymer composite foam material field. According to weight fraction, the hybrid antistatic EPDM composite foamed material includes EPDM particle 80-90 parts, EVA particle 10-20 parts, antistatic hybrid composite filler 7-12 parts, zinc oxide 2 parts, stearic acid 2 parts, foaming agent azobisformamide 7 parts, crosslinking agent dicumyl peroxide 0.5 parts, talc 2-4 parts.Among them, antistatic hybrid composite filler is first prepared with acidified carbon fiber, zirconium dioxide to prepare zirconium dioxide on acidified carbon fiber, then combined with the preparation of graphene oxide using improved Hummers method to obtain compound.The antistatic hybrid composite filler and EPDM are prepared by double roll mixing, mould pressing foaming method to obtain hybrid antistatic EPDM composite foamed material, formula scientific and reasonable, process flow is simple and practical;The compatibility of the prepared hybrid antistatic filler and matrix is good, dispersed uniformly and has excellent antistatic effect, simultaneously has excellent mechanical property.

Description

TECHNICAL FIELD

[0001] The application belongs to the field of high polymer composite foam materials, and particularly relates to a hybrid antistatic EPDM composite foaming material and a preparation method thereof. BACKGROUND

[0002] Ethylene propylene diene rubber (EPDM) is a copolymer obtained by curing and granulating ethylene, propylene and a small amount of a third monomer, and belongs to a kind of ethylene propylene rubber. According to the different third monomers, the ethylene propylene diene rubber can be divided into the following three types: 1,4-hexadiene type, dicyclopentadiene type and ethylidenenorbornene type. The molecular structure is linear and a double bond is introduced in the side chain, so that sulfur can be used for vulcanization and peroxide such as dicumyl peroxide can also be used for vulcanization; according to the different propylene content in the ethylene propylene diene rubber, it can be divided into high propylene, medium propylene and low propylene types, and the higher the propylene content in the main body, the more the elasticity and mechanical properties of the ethylene propylene diene rubber vulcanized rubber decrease. The high molecular main chain is composed of soft segment and hard segment. Among many synthetic rubber materials, the ethylene propylene diene rubber (EPDM) exhibits high elasticity of traditional rubber at room temperature, and has plasticity of ordinary plastic at high temperature, and has the characteristics of plastic and rubber. The production efficiency of EPDM is high, and it can use the common processing technology of thermoplastic plastic, such as melt blending extrusion molding. EPDM has excellent chemical stability, electrical insulation, aging resistance and waterproof performance, good ductility, high strength and high filling plasticizing ability, and other excellent properties, and is widely used in automobile engineering, building engineering, air conditioning, refrigeration and other industries.

[0003] However, the static problem of EPDM is very serious in the use process, and the volume resistivity is generally about 10 16 Q·cm, and the breakdown voltage reaches 30-40 MV / m. The poor conductivity of EPDM material itself needs to be improved to make it be applied in more aspects. The EPDM material needs to be modified by antistatic functionalization to have certain antistatic function. The addition of antistatic agent can form a conductive network in the internal structure of the ethylene propylene diene rubber matrix, so that the accumulated charge can be released faster through the conductive network to improve the static phenomenon. SUMMARY

[0004] The purpose of the present application is to provide a hybrid antistatic EPDM composite foaming material which has good antistatic effect and processing performance.

[0005] To achieve the above purpose, the technical scheme adopted by the present application is as follows:

[0006] A hybrid antistatic EPDM composite foaming material, which comprises, in parts by weight, 80-90 parts of EPDM particles, 10-20 parts of EVA particles, 7-12 parts of an antistatic hybrid composite filler, 2 parts of zinc oxide, 2 parts of stearic acid, 7 parts of a foaming agent azodicarbonamide, 0.5 parts of a crosslinking agent dicumyl peroxide, and 2-4 parts of talc.

[0007] Further, the antistatic hybrid composite filler is prepared by compounding acidified carbon fiber loaded zirconium dioxide oCF@ZrO2 and graphene oxide GO at a mass ratio of 1:1.

[0008] Further, the preparation steps of the acidified carbon fiber loaded zirconium dioxide oCF@ZrO2 are as follows:

[0009] (1) Preparation of acidified carbon fiber oCF: 35 mL of 98% concentrated sulfuric acid and 15 mL of 68% concentrated nitric acid are mixed, then 4 g of carbon fiber is added and reacted for 4 h, after centrifugation, the precipitate is vacuum dried at 60°C for 12 h, and after grinding, oCF is obtained;

[0010] (2) Preparation of acidified carbon fiber loaded zirconium dioxide oCF@ZrO2: carbon fiber is added to deionized water and ultrasonically shaken at 25°C until uniformly dispersed, then transferred to a 60°C water bath for magnetic stirring; then zirconium dioxide is slowly added in batches, and the stirring is continued at 60°C for 6 h, then placed at room temperature for continuous stirring for 4 h and then left overnight; finally, the mixed solution after the reaction is completed is centrifuged and dried to obtain acidified carbon fiber loaded zirconium dioxide oCF@ZrO2.

[0011] In step (2), the amount ratio of carbon fiber, zirconium dioxide and deionized water is 2:1:100 mL.

[0012] In step (2), the drying temperature is 60°C, and the time is 12 h.

[0013] The preparation method of the graphene oxide GO is as follows: 1 g of flake graphite is weighed and added to 60 mL of 98% concentrated sulfuric acid, stirred at room temperature for 30 min, then heated to 40°C, 5 g of potassium permanganate is added in batches slowly, reacted for 6 h, then 100 mL of deionized water is slowly added while heating to 80°C, then 5% hydrogen peroxide solution is added dropwise until the system is yellow and no bubbles come out; then 25 mL of 30% hydrochloric acid is added to the system, and finally deionized water is added to 1 L in the mixed solution, left to stand for 12 h, centrifuged and washed until the solution is neutral, then freeze-dried for 48 h using a freeze dryer to obtain graphene oxide GO.

[0014] The application also provides a preparation method of the hybrid antistatic EPDM composite foaming material.

[0015] (1) EPDM particles, EVA particles, antistatic hybrid composite filler, zinc oxide, stearic acid, foaming agent azodicarbonamide, crosslinking agent dicumyl peroxide and talc powder are uniformly mixed for 10-20 min using a preheated two-roll open mill, the heating temperature is 50-60℃, after the rubber compound is completely mixed and uniform, the rubber compound sheet with a thickness of 2-4mm is obtained after thin passing 4-6 times.

[0016] (2) After the rubber compound sheet obtained in step (1) is placed in the mold cavity of a preheated flat plate mold press for 4-6h, the hybrid antistatic EPDM composite foaming material is obtained after foaming at 175℃, 10MPa for 450s and cooling.

[0017] The beneficial effects of the present application are:

[0018] The acidified carbon fiber loaded zirconium dioxide oCF@ZrO2 prepared by the present application and graphene oxide GO and their application in EPDM composite foaming material have scientific and reasonable formula, simple and practical process flow; the surface acidified carbon fiber is prepared by a relatively green and environmentally friendly method, and the zirconium dioxide is loaded on the surface of the acidified carbon fiber, the acidified carbon fiber loaded zirconium dioxide oCF@ZrO2 is successfully prepared, and the graphene oxide GO is prepared by the improved Hummers method, and the antistatic hybrid filler is obtained by combining the two. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 The SEM image of the acidified carbon fiber loaded zirconium dioxide oCF@ZrO2 prepared by the present application.

[0020] Figure 2 The SEM image of the graphene oxide GO prepared by the present application.

[0021] Figure 3 The FTIR image of the acidified carbon fiber loaded zirconium dioxide oCF@ZrO2 prepared by the present application.

[0022] Figure 4 The SEM image of the hybrid antistatic EPDM foaming material example 3 prepared by the present application. DETAILED DESCRIPTION

[0023] In order to make the content described in the present application more convenient to understand, the technical solutions described in the present application will be further described below in combination with specific embodiments, but the present application is not limited thereto.

[0024] The materials in the following examples can be purchased from the market; EPDM particles are purchased from DuPont Company, EVA particles are purchased from Formosa Plastics Group; carbon fiber is carbon fiber powder, single filament diameter is 5μm, mesh number is 300 mesh.

[0025] A method for preparing acidified carbon fiber loaded zirconium dioxide oCF@ZrO2, comprising the following steps:

[0026] 1) Preparation of acidified carbon fiber oCF: 35 mL of 98% concentrated sulfuric acid and 15 mL of 68% concentrated nitric acid are mixed, then 4 g of carbon fiber is added, and the acidification reaction is carried out for 4 h. After centrifugation, the precipitate is vacuum dried at 60°C for 12 h, and then ground to obtain oCF for standby;

[0027] 2) Preparation of acidified carbon fiber loaded zirconium dioxide oCF@ZrO2: 4 g of acidified carbon fiber oCF is weighed and added to a 200 mL beaker of deionized water, and ultrasonic oscillation is carried out at 25°C until it is uniformly dispersed. The beaker is transferred to a 60°C water bath and continuously stirred with a magnetic stirrer. Then 2 g of zirconium dioxide is weighed and added to the previous mixture in batches at a rate of 0.5 g each time, and the stirring reaction is continued at 60°C for 6 h. After the beaker is taken out of the water bath, it is continuously stirred for 4 h and then left overnight. Finally, the completed reaction mixture is centrifuged to obtain a gray precipitate, which is placed in a 60°C vacuum drying oven for 12 h to obtain acidified carbon fiber loaded zirconium dioxide oCF@ZrO2.

[0028] A method for preparing graphene oxide by improved Hummers method, comprising the following steps:

[0029] Preparation of graphene oxide by improved Hummers method: 1 g of flake graphite is weighed and added to 60 mL of 98% concentrated sulfuric acid, and stirred at room temperature for 30 min, then heated to 40°C, and then 5 g of potassium permanganate is weighed and added to the beaker in batches at a rate of 0.1 g, 0.2 g, 0.3 g, 0.4 g, 0.5 g, 0.5 g, 0.5 g…, with an addition of 10 min each time, and the total addition time is controlled to be about 2 h. The reaction is carried out for 6 h until the solution becomes sticky. Then 100 mL of deionized water is slowly added to dilute the reaction solution, and the temperature is increased to 80°C. Then 5% hydrogen peroxide solution is added dropwise until the system turns yellow and no bubbles are generated. Then 25 mL of 30% hydrochloric acid is added to the system, and finally deionized water is added to the mixture until the volume reaches 1 L. After standing for 12 h, the solution is washed and centrifuged until it becomes neutral, and then freeze-dried for 48 h to obtain graphene oxide GO. Finally, the prepared acidified carbon fiber loaded zirconium dioxide oCF@ZrO2 and graphene oxide GO are uniformly mixed in a mass ratio of 1:1 to obtain an antistatic hybrid composite filler.

[0030] Figure 1The SEM image of the acidified carbon fiber loaded zirconium dioxide oCF@ZrO2 prepared in the application can be seen that the prepared acidified carbon fiber loaded zirconium dioxide oCF@ZrO2 does not present an agglomeration state, and the zirconium dioxide particles loaded on the surface of the acidified carbon fiber can be obviously seen, the loading amount is higher and the distribution is uniform. Figure 2 The SEM image of the graphene oxide GO prepared in the application can be seen that the prepared graphene oxide GO is a wrinkled nanosheet. Figure 3 The FTIR image of the acidified carbon fiber loaded zirconium dioxide oCF@ZrO2 prepared in the application, at 3420cm -1 The obvious hydroxyl characteristic peak appears at 1635cm -1 , 1590cm -1 , 1093cm -1 The characteristic peaks caused by the carbon-oxygen double bond, carbon-oxygen single bond and conjugated carbon-carbon double bond of carbon fiber appear at 512cm -1 The Zr-O characteristic peak of ZrO2 appears at 512cm -1 , which indicates that the zirconium dioxide is successfully attached to the surface of the acidified carbon fiber oCF.

[0031] Example 1

[0032] A preparation method of a hybrid antistatic EPDM composite foaming material, comprising the following steps:

[0033] 1) 80 parts of EPDM particles, 20 parts of EVA particles, 7 parts of antistatic hybrid composite filler, 2 parts of zinc oxide, 2 parts of stearic acid, 7 parts of foaming agent AC (azodicarbonamide), 0.5 parts of crosslinking agent DCP (dicumyl peroxide), 4 parts of talc, a preheated double roller mill is used to mix at 50℃ for 20min, until all the raw materials are uniformly mixed, after the raw materials are fully mixed, the mixed raw materials are pressed into 4mm sheets by using a double roller mill, and the raw material sheets are placed in a blast drying oven for drying for 5 hours;

[0034] 2) The sheet prepared in step 1) is placed in a preheated flat curing machine film cavity, and after 450s of molding foaming at 10MPa and 175℃, the hybrid antistatic EPDM foaming material is obtained.

[0035] Example 2

[0036] A preparation method of a hybrid antistatic EPDM composite foaming material, comprising the following steps:

[0037] 1) EPDM particles 80 parts, EVA particles 20 parts, antistatic hybrid filler 10 parts, zinc oxide 2 parts, stearic acid 2 parts, foaming agent AC (azodicarbonamide) 7 parts, crosslinking agent DCP (dicumyl peroxide) 0.5 parts, talc 4 parts, using a preheated two-roll open mill to mix at 50°C for 20 min, until all the raw materials are uniformly mixed, after the raw materials are mixed, the mixed raw materials are pressed into 4mm sheets using a two-roll open mill, and the raw material sheets are placed in a forced air drying oven for 5 hours;

[0038] 2) The sheet prepared in step 1) is placed in a preheated flat vulcanizing machine film cavity, and after 450s of molding and foaming at 10MPa, 175°C, it is taken out, and a hybrid antistatic EPDM foaming material is obtained.

[0039] Example 3

[0040] A method for preparing a hybrid antistatic EPDM composite foaming material, comprising the following steps:

[0041] 1) EPDM particles 80 parts, EVA particles 20 parts, antistatic hybrid filler 12 parts, zinc oxide 2 parts, stearic acid 2 parts, foaming agent AC (azodicarbonamide) 7 parts, crosslinking agent DCP (dicumyl peroxide) 0.5 parts, talc 4 parts, using a preheated two-roll open mill to mix at 50°C for 20 min, until all the raw materials are uniformly mixed, after the raw materials are mixed, the mixed raw materials are pressed into 4mm sheets using a two-roll open mill, and the raw material sheets are placed in a forced air drying oven for 5 hours;

[0042] 2) The sheet prepared in step 1) is placed in a preheated flat vulcanizing machine film cavity, and after 450s of molding and foaming at 10MPa, 175°C, it is taken out, and a hybrid antistatic EPDM foaming material is obtained.

[0043] Figure 4 The SEM image of the hybrid antistatic EPDM foaming material prepared in Example 3 of the present application can be seen from the image, the hybrid antistatic EPDM foaming material prepared by the present application has a uniform cell distribution, and the hybrid antistatic composite filler prepared therein has good dispersibility.

[0044] Comparative Example 1

[0045] A method for preparing an EPDM composite foaming material, comprising the following steps:

[0046] 1) EPDM particles 80 parts, EVA particles 20 parts, zinc oxide 2 parts, stearic acid 2 parts, foaming agent AC (azodicarbonamide) 7 parts, crosslinking agent DCP (dicumyl peroxide) 0.5 parts, talc 4 parts, using a preheated two-roll open mill to mix at 50°C for 20 min, until all the raw materials are uniformly mixed, after the raw materials are fully mixed, the mixed raw materials are pressed into 4mm sheets using a two-roll open mill, and the raw material sheets are placed in a forced air drying oven for 5 hours;

[0047] 2) The sheet prepared in step 1) is placed in a preheated flat vulcanizing machine membrane cavity, and after 450s of molding and foaming at 10MPa and 175°C, it is taken out, and an EPDM composite foaming material is obtained.

[0048] Comparative Example 2

[0049] A method for preparing an EPDM composite foaming material, comprising the following steps:

[0050] 1) EPDM particles 80 parts, EVA particles 20 parts, carbon fibers 10 parts, zinc oxide 2 parts, stearic acid 2 parts, foaming agent AC (azodicarbonamide) 7 parts, crosslinking agent DCP (dicumyl peroxide) 0.5 parts, talc 4 parts, using a preheated two-roll open mill to mix at 50°C for 20 min, until all the raw materials are uniformly mixed, after the raw materials are fully mixed, the mixed raw materials are pressed into 4mm sheets using a two-roll open mill, and the raw material sheets are placed in a forced air drying oven for 5 hours;

[0051] 2) The sheet prepared in step 1) is placed in a preheated flat vulcanizing machine membrane cavity, and after 450s of molding and foaming at 10MPa and 175°C, it is taken out, and an EPDM composite foaming material is obtained.

[0052] Comparative Example 3

[0053] A method for preparing an EPDM composite foaming material, comprising the following steps:

[0054] 1) EPDM particles 80 parts, EVA particles 20 parts, conductive carbon black 10 parts, zinc oxide 2 parts, stearic acid 2 parts, foaming agent AC (azodicarbonamide) 7 parts, crosslinking agent DCP (dicumyl peroxide) 0.5 parts, talc 4 parts, using a preheated two-roll open mill to mix at 50°C for 20 min, until all the raw materials are uniformly mixed, after the raw materials are fully mixed, the mixed raw materials are pressed into 4mm sheets using a two-roll open mill, and the raw material sheets are placed in a forced air drying oven for 5 hours;

[0055] 2) Put the sheet prepared in step 1) into the membrane cavity of a preheated flat vulcanizing machine, and after molding and foaming at 10 MPa and 175℃ for 450s, take out, to obtain the EPDM composite foaming material.

[0056] Comparative Example 4

[0057] A preparation method of an EPDM composite foaming material, comprising the following steps:

[0058] 1) Mix 80 parts of EPDM particles, 20 parts of EVA particles, 10 parts of antistatic filler (obtained by mixing acidified carbon fiber oCF and graphene oxide GO at a mass ratio of 1:1, wherein the graphene oxide GO is prepared by the Hammers method), 2 parts of zinc oxide, 2 parts of stearic acid, 7 parts of foaming agent AC (azodicarbonamide), 0.5 parts of crosslinking agent DCP (dicumyl peroxide), and 4 parts of talc in a preheated double-roller open mill at 50℃ for 20 min, until all the raw materials are uniformly mixed, and after the raw materials are fully mixed, press the mixed raw materials into 4mm sheets by using the double-roller open mill, and dry the raw material sheets in a forced air drying oven for 5 hours;

[0059] 2) Put the sheet prepared in step 1) into the membrane cavity of a preheated flat vulcanizing machine, and after molding and foaming at 10 MPa and 175℃ for 450s, take out, to obtain the EPDM composite foaming material.

[0060] Comparative Example 5

[0061] A preparation method of an EPDM composite foaming material, comprising the following steps:

[0062] 1) Mix 80 parts of EPDM particles, 20 parts of EVA particles, 10 parts of antistatic filler (obtained by mixing acidified carbon fiber oCF and graphene oxide GO at a mass ratio of 1:1, wherein the graphene oxide GO is prepared by the Hammers method), 2 parts of zinc oxide, 2 parts of stearic acid, 7 parts of foaming agent AC (azodicarbonamide), 0.5 parts of crosslinking agent DCP (dicumyl peroxide), and 4 parts of talc in a preheated double-roller open mill at 50℃ for 20 min, until all the raw materials are uniformly mixed, and after the raw materials are fully mixed, press the mixed raw materials into 4mm sheets by using the double-roller open mill, and dry the raw material sheets in a forced air drying oven for 5 hours;

[0063] 2) Put the sheet prepared in step 1) into the membrane cavity of a preheated flat vulcanizing machine, and after molding and foaming at 10 MPa and 175℃ for 450s, take out, to obtain the EPDM composite foaming material.

[0064] The samples obtained in the examples and comparative examples were tested for performance, and the results are shown in Table 1.

[0065] Table 1 sample performance test results

[0066]

[0067] The data in Table 1 shows that when the addition amount of the hybrid antistatic composite filler reaches 10 parts, the resistance of the sample can be reduced to 1.67*10 8 Ω, reaching the range of antistatic materials, and when the addition amount of the hybrid antistatic composite filler reaches 12 parts, the resistance of the sample can be reduced to 7.90*10 7 Ω. And with the increase of the addition amount of the hybrid antistatic composite filler, the tensile strength and elongation at break of the sample also have certain improvement, which shows that the hybrid antistatic composite filler used in the application can also effectively improve the mechanical properties of the sample. At the same time, compared with the comparative example 1 without adding the hybrid antistatic composite filler, the comparative example 2 with only 10 parts by weight of carbon fibers added, and the comparative example 3 with only 10 parts by weight of conductive carbon black added, the antistatic effect of the hybrid antistatic EPDM foaming material prepared in the example 2 is significantly improved, which shows that the prepared antistatic hybrid composite filler has synergistic antistatic effect, and the interpenetration of the zirconium dioxide loaded on the acidified carbon fiber in the foaming material and the layering of the graphene oxide in the composite foaming material build a three-dimensional hybrid conductive network, which is tightly combined with the matrix material, and has the effect of 1+1>2. In addition, compared with the comparative example 4 with 10 parts of acidified carbon fiber and ordinary graphene oxide prepared by the Hammers method (mass ratio 1:1) and the comparative example 5 with unacidified carbon fiber and graphene oxide prepared by the improved Hammers method (mass ratio 1:1), the resistance of the example 2 is still greatly reduced, which shows that the graphene oxide prepared by the improved Hammers method and the acidification of the carbon fiber have better improvement effect on the antistatic effect of the EPDM foaming material, and also have certain improvement in the mechanical properties. In addition, it can be clearly seen from Figure 4 the above that the prepared antistatic hybrid composite filler can be well dispersed in the EPDM-EVA composite foaming material, so that the final product prepared has excellent antistatic effect and mechanical properties.

[0068] The above only describes the preferred embodiments of the application, and any equivalent changes and modifications made within the scope of the application should be included in the scope of the application.

Claims

1. A hybrid antistatic EPDM composite foamed material, characterized in that: The hybrid antistatic EPDM composite foaming material comprises, in parts by weight, 80-90 parts of EPDM particles, 10-20 parts of EVA particles, 7-12 parts of the antistatic hybrid composite filler, 2 parts of zinc oxide, 2 parts of stearic acid, 7 parts of foaming agent azodicarbonamide, 0.5 parts of crosslinking agent dicumyl peroxide, and 2-4 parts of talc. The antistatic hybrid composite filler is prepared by compounding acidified carbon fiber loaded zirconium dioxide oCF@ZrO2 and graphene oxide GO at a mass ratio of 1:

1. The preparation steps of the acidified carbon fiber loaded zirconium dioxide oCF@ZrO2 are as follows: (1) Preparation of acidified carbon fiber oCF: 35 mL of 98% concentrated sulfuric acid and 15 mL of 68% concentrated nitric acid are mixed, then 4 g of carbon fiber is added and reacted for 4 h, the precipitate is centrifuged and dried in a vacuum at 60°C for 12 h, and then ground to obtain oCF; (2) Preparation of acidified carbon fiber loaded zirconium dioxide oCF@ZrO2: carbon fiber is added to deionized water and ultrasonically shaken at 25°C until uniformly dispersed, then transferred to a 60°C water bath for magnetic stirring; then zirconium dioxide is slowly added in batches, and stirring is continued at 60°C for 6 h, then placed at room temperature for continuous stirring for 4 h and overnight standing; finally, the completed reaction mixture is centrifuged and dried to obtain acidified carbon fiber loaded zirconium dioxide oCF@ZrO2.

2. The hybrid antistatic EPDM composite foamed material according to claim 1, characterized in that: The amount ratio of carbon fiber, zirconium dioxide and deionized water in step (2) is 2:1:100 mL.

3. The hybrid antistatic EPDM composite foamed material according to claim 1, characterized in that: The drying temperature in step (2) is 60°C, and the time is 12 h.

4. The hybrid antistatic EPDM composite foamed material according to claim 1, characterized in that: The preparation method of the graphene oxide GO is as follows: 1 g of flake graphite is added to 60 mL of 98% concentrated sulfuric acid, stirred at room temperature for 30 min, then heated to 40°C, 5 g of potassium permanganate is added in batches slowly, reacted for 6 h, then 100 mL of deionized water is slowly added while heating to 80°C, then 5% hydrogen peroxide solution is added dropwise until the system is yellow and no bubbles are generated; then 25 mL of 30% hydrochloric acid is added to the system, and finally deionized water is added to 1 L, left to stand for 12 h, centrifuged and washed until the solution is neutral, then freeze-dried for 48 h to obtain graphene oxide GO.

5. The preparation method of the hybrid antistatic EPDM composite foam material as described in claim 1, characterized in that: The following steps are included: (1) The EPDM particles, EVA particles, antistatic hybrid composite filler, zinc oxide, stearic acid, foaming agent azodicarbonamide, crosslinking agent dicumyl peroxide and talc are uniformly mixed for 10-20 min using a preheated two-roll open mill, the heating temperature is 50-60°C, and after the rubber compound is completely mixed and uniform, it is passed through the mill 4-6 times to obtain a 2-4 mm thick rubber sheet; (2) The rubber sheet obtained in step (1) is left to stand for 4-6 h, then placed in the mold cavity of a preheated flat plate mold press, and molded and foamed at 175°C and 10 MPa for 450 s, and then cooled to obtain the hybrid antistatic EPDM composite foaming material.

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