Preparation method of anti-static ABS (acrylonitrile-butadiene-styrene) composite material

Abstract

The invention discloses a preparation method of an anti-static ABS (Acrylonitrile Butadiene Styrene) composite material, and belongs to the technical field of ABS composite materials. According to the preparation method of the anti-static ABS composite material, the anti-static performance and the mechanical performance of the composite material are remarkably improved through the synergistic effect of the conductive core-shell particles and the surfactant type anti-static agent. The formula comprises ABS resin, conductive core-shell particles, a surfactant type antistatic agent, an antioxidant BHT (butylated hydroxytoluene), EPDM (Ethylene-Propylene-Diene Monomer), a plasticizer and the like. Conductive core-shell particles are prepared through an emulsion polymerization method, and in-situ polymerization and blending reaction are carried out at high temperature to ensure that the conductive particles are uniformly dispersed in the material to form a stable conductive network. According to the method, melt blending is performed through a double-screw extruder, so that the uniformity and stability of the material are ensured. The finally obtained composite material has excellent antistatic property, mechanical strength and thermal stability, is suitable for the industries of electronics, automobiles and the like, and has a wide application prospect.

Description

Technical Field

[0001] The present invention relates to the technical field of ABS composite materials, and more specifically, to a preparation method of an antistatic ABS composite material. Background Art

[0002] With the continuous progress of technology, the requirements for the electronic performance of electronic devices and various industrial products are getting higher and higher, especially in terms of antistatic properties. Electrostatic problems can lead to equipment damage, product quality decline or operation safety problems in many fields. Therefore, the research and application of antistatic materials have become particularly important. Traditional antistatic measures mainly rely on methods such as coating and spraying, but these methods usually have limited effects and have certain impacts on the mechanical properties and long-term stability of the material itself.

[0003] In past research, many antistatic composite materials used conductive fillers such as carbon black and metal particles. Although these materials can effectively reduce static charge accumulation, their conductive properties and mechanical properties are not ideal, and they are easily affected by changes in the external environment. In recent years, conductive polymer composite materials have gradually become a research hotspot, especially the introduction of nanomaterials such as graphene oxide and carbon nanotubes, which has brought breakthroughs in the conductivity and stability of composite materials.

[0004] Currently, with the gradual application of core-shell particles composed of polystyrene and graphene oxide in antistatic composite materials, this new type of material can ensure high conductive performance without affecting the mechanical properties of the material. Especially the introduction of conductive core-shell particles into the ABS resin matrix not only improves the antistatic performance of the material, but also effectively enhances its mechanical properties such as strength and toughness, so it has been widely used.

[0005] However, the existing technology still faces some challenges. For example, poor dispersion of conductive particles may lead to an uneven conductive network in the material, thus affecting its antistatic effect. In addition, the preparation process and cost control of conductive core-shell particles still need to be improved, and the influence of conductive particles with different particle sizes and distributions on the properties of composite materials still needs further study.

[0006] In the future, with the further development of nanotechnology and materials science, the preparation process of conductive core-shell particles will become more mature, the uniformity and controllability of materials will be improved, and the application prospects of composite materials are broad. By optimizing the formulation and process parameters, more efficient and stable antistatic effects can be achieved to meet the higher requirements for antistatic materials in the electronics industry, automotive industry, etc. Summary of the Invention

[0007] The purpose of the present invention is to provide a preparation method of an antistatic ABS composite material, which has excellent antistatic properties, mechanical strength and thermal stability.

[0008] A preparation method of an antistatic ABS composite material, characterized by comprising the following steps:

[0009] (1) Material preparation stage: Weigh the following materials according to the formula: 100 parts of ABS resin, 6 - 10 parts of conductive core - shell particles, 1 - 2 parts of surfactant - type antistatic agent 1, 0.6 - 1 part of surfactant - type antistatic agent 2, 2 - 4 parts of EPDM, 0.1 - 0.3 part of antioxidant BHT, and 0.6 - 1 part of plasticizer dioctyl phthalate;

[0010] (2) Preparation of conductive core - shell particles: Place 480 - 520 mL of tetrahydrofuran solvent and graphene oxide in a container, ultrasonically disperse for 40 - 60 minutes until evenly dispersed, then slowly add 10 g of polystyrene while ultrasonically dispersing, ultrasonically disperse for 40 - 60 minutes until evenly dispersed, add initiator ammonium persulfate, ultrasonically disperse evenly, stir and react at 50 - 70 °C for 50 - 70 minutes, cool to room temperature, centrifuge and separate, wash clean with tetrahydrofuran and dry to obtain conductive core - shell particles;

[0011] (3) Dry - blending stage: Place the raw materials weighed according to the formula in a high - speed mixing device, then add initiator benzoyl peroxide, mix at high speed for 10 - 20 minutes until evenly dispersed to obtain evenly dry - blended raw materials;

[0012] (4) In - situ polymerization and blending stage: Place the evenly dry - blended raw materials in a twin - screw extruder for melt blending, place in a nitrogen atmosphere for in - situ polymerization reaction, after the reaction is completed, extrude, and the extrudate is cooled and then enters a pelletizer to pelletize to obtain uniform particles with a diameter of 3 - 5 mm.

[0013] Preferably, in the step (1), the surfactant - type antistatic agent 1 is polyvinylpyrrolidone, and the surfactant - type antistatic agent 2 is quaternary ammonium salt cetyltrimethylammonium chloride.

[0014] Preferably, in the step (1), the conductive core - shell particles are prepared from graphene oxide and polystyrene by emulsion polymerization method.

[0015] Preferably, in the step (2), the mass of graphene oxide is 40 - 60% of that of polystyrene.

[0016] Preferably, in the step (2), the mass of ammonium persulfate is 1.2 - 2% of that of polystyrene.

[0017] Preferably, in the step (3), the mass of benzoyl peroxide is 0.1 - 0.5% of that of ABS resin.

[0018] Preferably, in the step (4), the conditions of the in - situ polymerization reaction are that the polymerization reaction temperature is 80 - 120 °C and the reaction time is 10 - 20 minutes.

[0019] Preferably, the extrusion conditions in step (4) are that the temperature is controlled at 220 - 260 °C, the screw speed is 100 - 200 r / min, and the extrusion pressure is 20 - 30 MPa.

[0020] Preferably, the cooling method in step (4) above is to cool it to below 40 °C through a water cooling system.

[0021] Compared with the prior art, the advantages of the present invention are as follows:

[0022] (1) The antistatic performance is significantly improved

[0023] Functions of surfactant - type antistatic agents:

[0024] Using polyvinylpyrrolidone and cetyltrimethylammonium chloride of quaternary ammonium salts as surfactant - type antistatic agents effectively enhances the antistatic performance of the composite material. Polyvinylpyrrolidone has good wettability and hydrophilicity, and can form a uniform thin film on the material surface, improving the conductivity of the material, thereby effectively inhibiting the accumulation of static electricity.

[0025] As a surfactant, cetyltrimethylammonium chloride of quaternary ammonium salts can enhance the surface charge conduction ability of the composite material, reduce static electricity accumulation, and prevent potential damage to electronic products caused by static electricity. Through the synergistic effect of the two, the antistatic effect is more persistent and stable.

[0026] (2) Double improvement of electrical conductivity and mechanical properties

[0027] Applications of conductive core - shell particles:

[0028] The graphene oxide / polystyrene core - shell particles prepared by the emulsion polymerization method have high electrical conductivity, and the particle size ranges from 50 nanometers to 500 nanometers. Graphene oxide, as the conductive core material, can form an efficient conductivity network. At the same time, the polystyrene shell effectively protects the graphene oxide particles from being damaged during the processing, thus stabilizing the conductivity of the composite material and effectively improving the antistatic performance of the material.

[0029] The two - dimensional or three - dimensional conductive network structure formed by conductive particles in the matrix greatly enhances the conductivity of the material, can effectively inhibit the accumulation of static electricity, and thus reduces the impact of static electricity on electronic devices and product quality.

[0030] (3) Improvement of the mechanical properties of the material

[0031] After the ABS resin is compounded with the conductive core-shell particles, not only the conductivity of the material is improved, but also good mechanical properties are maintained, especially in terms of strength and toughness. By optimizing the distribution and size of the particles, the composite material can have higher impact resistance and durability while being antistatic, and is suitable for application fields with high strength requirements.

[0032] (4) Improving the dispersibility and stability of particles

[0033] Through ultrasonic dispersion and emulsion polymerization methods, good dispersibility of the conductive core-shell particles in the matrix is ensured. This efficient dispersion process can avoid particle aggregation, thus guaranteeing the uniformity of the composite material and further enhancing the material properties.

[0034] The use of surfactant-type antistatic agents (such as polyvinylpyrrolidone and cetyltrimethylammonium chloride of quaternary ammonium salts) effectively improves the compatibility between the conductive particles and the ABS resin, and enhances the stability and dispersion degree of the particles in the matrix.

[0035] (5) Improving the controllability and efficiency of the production process

[0036] The design of the dry blending stage and the in-situ polymerization and blending stage in the method of this patent makes the preparation process of the material more simple and efficient. Through melt blending with a twin-screw extruder, the reaction and mixing can be completed in a short time, improving the production efficiency.

[0037] During the polymerization reaction process, the application of a nitrogen atmosphere effectively avoids the interference of oxygen on the polymerization reaction, ensures the smooth progress of the polymerization process and optimizes the final properties of the composite material.

[0038] (6) Reducing production costs

[0039] By selecting appropriate raw materials and preparation processes, this method can reduce the raw material cost on the basis of ensuring performance. Especially in the preparation process of the conductive core-shell particles, the composite technology of graphene oxide and polystyrene not only improves the conductivity but also effectively controls the material cost.

[0040] By using common equipment and processes, the method described in this invention has good industrial application prospects, is suitable for large-scale production, and can meet the market demand for high-performance antistatic materials while reducing production costs.

[0041] (7) Excellent stability and long-term performance

[0042] Antioxidation and aging resistance:

[0043] The antioxidant BHT added in this patent effectively prevents the composite material from degrading in performance due to oxidation reactions during long-term use, enhancing the durability and stability of the composite material. The addition of the antioxidant ensures that the composite material can still maintain its excellent electrical and mechanical properties under harsh environments such as high temperature and high humidity.

[0044] (8) Broaden the application fields

[0045] This antistatic ABS composite material has broad application potential, especially in the fields of electronic products, automobiles, aerospace, medical equipment, etc. By adjusting the content and distribution of the conductive particles, the performance of the composite material can be flexibly adjusted to meet the requirements of antistatic performance, mechanical properties and stability in different application scenarios. Specific implementation methods

[0046] Example 1:

[0047] (1) Material preparation stage: Weigh the following materials according to the formula: 100 parts of ABS resin, 6 parts of conductive core-shell particles, 1 part of surfactant-type antistatic agent 1 polyvinylpyrrolidone, 0.6 part of surfactant-type antistatic agent 2 quaternary ammonium salt cetyltrimethylammonium chloride, 2 parts of EPDM, 0.1 part of antioxidant BHT, and 0.6 part of plasticizer dioctyl phthalate;

[0048] (2) Preparation of conductive core-shell particles: Place 480 mL of tetrahydrofuran solvent and 4 g of graphene oxide in a container, ultrasonically disperse for 40 minutes until evenly dispersed, then slowly add 10 g of polystyrene while ultrasonically dispersing, ultrasonically disperse for 400 minutes until evenly dispersed, add 0.12 g of initiator ammonium persulfate, ultrasonically disperse evenly, stir and react at 50 °C for 50 minutes, cool to room temperature, centrifuge and separate, wash clean with tetrahydrofuran and dry to obtain conductive core-shell particles;

[0049] (3) Dry blending stage: Place the various raw materials weighed according to the formula in a high-speed mixing device, and then add 0.1% of the initiator benzoyl peroxide based on the mass of the ABS resin, mix at high speed for 10 minutes until evenly dispersed to obtain evenly dry-blended raw materials;

[0050] (4) In-situ polymerization and blending stage: Place the evenly dry-blended raw materials in a twin-screw extruder for melt blending and in-situ polymerization reaction, place in a nitrogen atmosphere, the polymerization reaction temperature is 80 °C, the reaction time is 10 minutes, after the reaction is completed, extrude, control the extrusion temperature at 220 °C, the screw speed is 100 r / min, the extrusion pressure is 20 MPa, the extrudate is cooled to below 40 °C through a water cooling system, and the cooled material enters a pelletizer to be pelletized to obtain uniform pellets with a diameter of 3 mm.

[0051] Example 2:

[0052] (1) Material preparation stage: Weigh the following materials according to the formula: 100 parts of ABS resin, 7 parts of conductive core-shell particles, 1.25 parts of surfactant-type antistatic agent 1 polyvinylpyrrolidone, 0.7 parts of surfactant-type antistatic agent 2 quaternary ammonium salt cetyltrimethylammonium chloride, 2.5 parts of EPDM, 0.15 parts of antioxidant BHT, and 0.7 parts of plasticizer dioctyl phthalate;

[0053] (2) Preparation of conductive core-shell particles: Place 490 mL of tetrahydrofuran solvent and 4.5 g of graphene oxide in a container, ultrasonically disperse for 45 minutes until uniform, then slowly add 10 g of polystyrene while ultrasonically dispersing, ultrasonically disperse for 45 minutes until uniform, add 0.14 g of initiator ammonium persulfate, ultrasonically disperse until uniform, stir and react at 55 °C for 55 minutes, cool to room temperature, centrifuge, wash with tetrahydrofuran until clean and dry to obtain conductive core-shell particles;

[0054] (3) Dry blending stage: Place the weighed raw materials according to the formula in a high-speed mixing device, and then add 0.2% of the mass of ABS resin of initiator benzoyl peroxide, mix at high speed for 12 minutes until uniform to obtain uniformly dry-blended raw materials;

[0055] (4) In-situ polymerization and blending stage: Place the uniformly dry-blended raw materials in a twin-screw extruder for melt blending and in-situ polymerization reaction, place in a nitrogen atmosphere, the polymerization reaction temperature is 90 °C, the reaction time is 12 minutes, after the reaction is completed, extrude, control the extrusion temperature at 230 °C, the screw speed is 125 r / min, the extrusion pressure is 22.5 MPa, the extrudate is cooled to below 40 °C through a water cooling system, and the cooled material enters a pelletizer to be pelletized to obtain uniform pellets with a diameter of 3.5 mm.

[0056] Example 3:

[0057] (1) Material preparation stage: Weigh the following materials according to the formula: 100 parts of ABS resin, 8 parts of conductive core-shell particles, 1.5 parts of surfactant-type antistatic agent 1 polyvinylpyrrolidone, 0.8 parts of surfactant-type antistatic agent 2 quaternary ammonium salt cetyltrimethylammonium chloride, 3 parts of EPDM, 0.2 parts of antioxidant BHT, and 0.8 parts of plasticizer dioctyl phthalate;

[0058] (2) Preparation of conductive core-shell particles: Place 500 mL of tetrahydrofuran solvent and 5 g of graphene oxide in a container, ultrasonically disperse for 50 minutes until uniform, then slowly add 10 g of polystyrene while ultrasonically dispersing, ultrasonically disperse for 50 minutes until uniform, add 0.16 g of initiator ammonium persulfate, ultrasonically disperse until uniform, stir and react at 60 °C for 60 minutes, cool to room temperature, centrifuge, wash with tetrahydrofuran until clean and dry to obtain conductive core-shell particles;

[0059] (3) Dry blending stage: Place the weighed raw materials according to the formula in a high-speed mixing equipment, and then add benzoyl peroxide as the initiator, with a mass of 0.3% of the ABS resin. Mix at high speed for 15 minutes until evenly dispersed to obtain evenly dry-blended raw materials;

[0060] (4) In-situ polymerization and blending stage: Place the evenly dry-blended raw materials in a twin-screw extruder for melt blending and in-situ polymerization reaction. Place it in a nitrogen atmosphere. The polymerization reaction temperature is 100 °C, and the reaction time is 15 minutes. After the reaction is completed, extrusion is carried out. The extrusion temperature is controlled at 240 °C, the screw speed is 150 r / min, the extrusion pressure is 25 MPa, and the extrudate is cooled to below 40 °C through a water cooling system. After cooling, the material enters a pelletizer to be pelletized to obtain uniform pellets with a diameter of 4 mm.

[0061] Example 4:

[0062] (1) Material preparation stage: Weigh the following materials according to the formula: 100 parts of ABS resin, 9 parts of conductive core-shell particles, 1.75 parts of surfactant-type antistatic agent 1 polyvinylpyrrolidone, 0.9 part of surfactant-type antistatic agent 2 quaternary ammonium salt cetyltrimethylammonium chloride, 3.5 parts of EPDM, 0.25 part of antioxidant BHT, and 0.9 part of plasticizer dioctyl phthalate;

[0063] (2) Preparation of conductive core-shell particles: Place 510 mL of tetrahydrofuran solvent and 5.5 g of graphene oxide in a container, ultrasonically disperse for 55 minutes until evenly dispersed, and then slowly add 10 g of polystyrene while ultrasonically dispersing. Ultrasonically disperse for 55 minutes until evenly dispersed, add 0.18 g of initiator ammonium persulfate, ultrasonically disperse evenly, stir and react at 65 °C for 65 minutes, cool to room temperature, centrifuge, wash clean with tetrahydrofuran and dry to obtain conductive core-shell particles;

[0064] (3) Dry blending stage: Place the weighed raw materials according to the formula in a high-speed mixing equipment, and then add benzoyl peroxide as the initiator, with a mass of 0.4% of the ABS resin. Mix at high speed for 17 minutes until evenly dispersed to obtain evenly dry-blended raw materials;

[0065] (4) In-situ polymerization and blending stage: Place the evenly dry-blended raw materials in a twin-screw extruder for melt blending and in-situ polymerization reaction. Place it in a nitrogen atmosphere. The polymerization reaction temperature is 110 °C, and the reaction time is 17 minutes. After the reaction is completed, extrusion is carried out. The extrusion temperature is controlled at 250 °C, the screw speed is 175 r / min, the extrusion pressure is 27.5 MPa, and the extrudate is cooled to below 40 °C through a water cooling system. After cooling, the material enters a pelletizer to be pelletized to obtain uniform pellets with a diameter of 4.5 mm.

[0066] Example 5:

[0067] (1) Material preparation stage: Weigh the following materials according to the formula: 100 parts of ABS resin, 10 parts of conductive core-shell particles, 2 parts of surfactant-type antistatic agent 1 (polyvinylpyrrolidone), 1 part of surfactant-type antistatic agent 2 (quaternary ammonium salt cetyltrimethylammonium chloride), 4 parts of EPDM, 0.3 part of antioxidant BHT, and 1 part of plasticizer dioctyl phthalate;

[0068] (2) Preparation of conductive core-shell particles: Place 520 mL of tetrahydrofuran solvent and 6 g of graphene oxide in a container, ultrasonically disperse for 60 minutes until evenly dispersed, then slowly add 10 g of polystyrene while ultrasonically dispersing, ultrasonically disperse for 60 minutes until evenly dispersed, add 0.2 g of initiator ammonium persulfate, ultrasonically disperse evenly, stir and react at 70 °C for 70 minutes, cool to room temperature, centrifuge and separate, wash clean with tetrahydrofuran and dry to obtain conductive core-shell particles;

[0069] (3) Dry blending stage: Place the weighed raw materials according to the formula in a high-speed mixing device, and then add 0.5% of the mass of the ABS resin as the initiator benzoyl peroxide, mix at high speed for 20 minutes until evenly dispersed to obtain evenly dry-blended raw materials;

[0070] (4) In-situ polymerization and blending stage: Place the evenly dry-blended raw materials in a twin-screw extruder for melt blending and in-situ polymerization reaction, place in a nitrogen atmosphere, the polymerization reaction temperature is 120 °C, the reaction time is 20 minutes, after the reaction is completed, extrude, control the extrusion temperature at 260 °C, the screw speed is 200 r / min, the extrusion pressure is 30 MPa, the extrudate is cooled below 40 °C through a water cooling system, and the cooled material enters a pelletizer to be pelletized to obtain uniform pellets with a diameter of 5 mm.

[0071] Performance testing

[0072] Antistatic performance testing

[0073] Prepare the products obtained in Examples 1-5 into thin sheets with a thickness of 1 mm and an area of 100 cm 2 , use a voltage source and an ammeter to measure the surface resistance of the sample, evenly apply an antistatic reagent on the surface of the sample to ensure that the reagent evenly covers the surface, apply a direct current of 10 V using a voltage source, and test its current response. The equipment model is Voltmeter-ResistivityMeter Model 6517B, and the test method is to test according to the ASTM D257 standard to measure the surface resistance of the composite material. The following table shows the test results:

[0074] Example 1 Example 2 Example 3 Example 4 Example 5 Surface resistance (Ω) <![CDATA[4.7×10 8 > <![CDATA[5.0×10 8 > <![CDATA[6.2×10 8 > <![CDATA[5.3×10 8 > <![CDATA[4.9×10 8 >

[0075] Mechanical property test

[0076] The products obtained in Examples 1-5 were made into strip specimens of 100 mm×15 mm×5 mm, and their mechanical properties were tested using an Instron 3345 electronic universal testing machine at a tensile rate of 5 mm / min. The following table shows the test results:

[0077] Example 1 Example 2 Example 3 Example 4 Example 5 Tensile strength (MPa) 43.8 45.2 46.1 45.0 44.3 Elongation at break (%) 11.9 12.4 13.1 12.5 12.0

[0078] Surface hardness test

[0079] The products obtained in Examples 1-5 were made into strip specimens of 100 mm×15 mm×5 mm, and their surface hardness was tested using a Shore D durometer. The following table shows the test results:

[0080] Example 1 Example 2 Example 3 Example 4 Example 5 Hardness (Ahore D) 78 81 82 80 79

[0081] Thermal stability test

[0082] 10 g specimens of the products obtained in Examples 1-5 were weighed and placed in the sample pan of a thermogravimetric analyzer. Their thermal stability was tested using a TGA-DSC 1 thermogravimetric analyzer. The sample was heated to 800 °C at a constant heating rate of 10 °C / min under a nitrogen atmosphere. The following table shows the test results:

[0083] Example 1 Example 2 Example 3 Example 4 Example 5 Weight loss temperature (℃) 375 385 395 390 375 Weight loss rate (%) 3.5 3.3 3.1 3.2 3.4

Claims

1. A preparation method of an anti-static ABS composite material, characterized in that, It includes the following steps: (1) Material preparation stage: Weigh the following materials according to the formula: 100 parts of ABS resin, 6 - 10 parts of conductive core - shell particles, 1 - 2 parts of surfactant - type antistatic agent 1, 0.6 - 1 part of surfactant - type antistatic agent 2, 2 - 4 parts of EPDM, 0.1 - 0.3 part of antioxidant BHT, and 0.6 - 1 part of plasticizer dioctyl phthalate; (2) Preparation of conductive core - shell particles: Place 480 - 520 mL of tetrahydrofuran solvent and graphene oxide in a container, ultrasonically disperse for 40 - 60 minutes until evenly dispersed, then slowly add 10 g of polystyrene while ultrasonically dispersing, ultrasonically disperse for 40 - 60 minutes until evenly dispersed, add initiator ammonium persulfate, ultrasonically disperse evenly, stir and react at 50 - 70 °C for 50 - 70 minutes, cool to room temperature, centrifuge, wash clean with tetrahydrofuran and dry to obtain conductive core - shell particles; (3) Dry - mixing stage: Place the weighed raw materials according to the formula in a high - speed mixing device, then add initiator benzoyl peroxide, mix at high speed for 10 - 20 minutes until evenly dispersed to obtain evenly dry - mixed raw materials; (4) In - situ polymerization and blending stage: Place the evenly dry - mixed raw materials in a twin - screw extruder for melt blending, place in a nitrogen atmosphere for in - situ polymerization reaction, after the reaction is completed, extrude, and after the extrudate cools, enter a pelletizer to pelletize to obtain uniform particles with a diameter of 3 - 5 mm.

2. The preparation method of an antistatic ABS composite material according to claim 1, wherein: In step (1), surfactant - type antistatic agent 1 is polyvinylpyrrolidone, and surfactant - type antistatic agent 2 is quaternary ammonium salt cetyltrimethylammonium chloride.

3. The preparation method of an anti-static ABS composite material according to claim 1, characterized in that: In step (1), the conductive core - shell particles are prepared from graphene oxide and polystyrene by emulsion polymerization method.

4. The preparation method of an antistatic ABS composite material according to claim 3, characterized in that: In step (2), the mass of graphene oxide is 40 - 60% of that of polystyrene.

5. The preparation method of an antistatic ABS composite material according to claim 1, characterized in that: In step (2), the mass of ammonium persulfate is 1.2 - 2% of that of polystyrene.

6. The preparation method of an anti-static ABS composite material according to claim 1, characterized in that: In step (3), the mass of benzoyl peroxide is 0.1 - 0.5% of that of ABS resin.

7. The preparation method of an antistatic ABS composite material according to claim 1, characterized in that: In step (4), the conditions for the in - situ polymerization reaction are that the polymerization reaction temperature is 80 - 120 °C and the reaction time is 10 - 20 minutes.

8. The preparation method of an anti-static ABS composite material according to claim 1, characterized in that: In step (4), the conditions for extrusion are that the temperature is controlled at 220 - 260 °C, the screw speed is 100 - 200 r / min, and the extrusion pressure is 20 - 30 MPa.

9. The preparation method of an antistatic ABS composite material according to claim 1, characterized in that: In step (4) above, the cooling method is to cool to below 40 °C through a water - cooling system.