CN108752722B - Antistatic EVA foam composite material and preparation method thereof - Google Patents

Antistatic EVA foam composite material and preparation method thereof Download PDF

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CN108752722B
CN108752722B CN201810485939.XA CN201810485939A CN108752722B CN 108752722 B CN108752722 B CN 108752722B CN 201810485939 A CN201810485939 A CN 201810485939A CN 108752722 B CN108752722 B CN 108752722B
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郑玉婴
丘永兴
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Fuzhou University
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    • C08J9/04—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent
    • C08J9/06—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a chemical blowing agent
    • C08J9/10—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a chemical blowing agent developing nitrogen, the blowing agent being a compound containing a nitrogen-to-nitrogen bond
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Abstract

The invention discloses an antistatic EVA foam composite material and a preparation method thereof, belonging to the field of polymer composite foam materials. The EVA foam composite material is prepared from the following raw materials: the antistatic agent comprises an ethylene-vinyl acetate copolymer, an antistatic agent, a foaming agent AC, stearic acid, zinc stearate, zinc oxide and dicumyl peroxide, wherein the antistatic agent is a three-dimensional graphene hollow sphere. The antistatic EVA foam composite material prepared by the invention has the advantages of scientific and reasonable formula, simple and practical process flow, small addition amount by adopting the three-dimensional graphene hollow spheres as the antistatic agent, good compatibility with a substrate, easy dispersion, excellent antistatic effect and excellent mechanical property. Meanwhile, a new idea and exploration are provided for developing novel antistatic agents in the future, and the antistatic agent has great social and economic benefits in practical application.

Description

Antistatic EVA foam composite material and preparation method thereof
Technical Field
The invention belongs to the field of polymer composite foam materials, and particularly relates to an antistatic EVA foam composite material and a preparation method thereof.
Background
The EVA foam composite material has the advantages of low density, strong buffering and shock absorbing capacity, low temperature resistance and the like, and is widely applied to the fields of shoe materials, buildings, packaging and the like. Because the EVA material has electrical insulation property as most high molecular plastics, the volume resistivity can reach 1014Omega or more. Such high volume resistivity will severely limit its application in packaging of special articles, such as military weapons, electronic components, instrumentation, etc. Fire may be generated in severe cases due to electrostatic action. Therefore, the research shows that the EVA foam material with the antistatic property has important application value in the fields of packaging, transportation and the like.
Graphene is a two-dimensional lamellar carbonaceous material, and is formed by tightly packing carbon atoms in a hexagonal honeycomb shape on the same plane. The novel structure and excellent electrical, thermal, mechanical and optical properties of graphene make the graphene draw attention of researchers since the discovery date. Compared with two-dimensional graphene, the three-dimensional graphene hollow sphere not only retains the excellent performances of the two-dimensional graphene such as electric conduction, heat conduction and mechanical properties, but also greatly increases the contact area with a substrate and expands the spatial application of the three-dimensional graphene hollow sphere. In addition, due to the hollow structural characteristics of the graphene hollow spheres, the conductivity can be improved. In addition, the size of the graphene hollow sphere can be controlled by controlling the size of the template method, and the number of layers of graphene can be changed by controlling the concentration of a carbon source material when the graphene hollow sphere is prepared by the carbonization coating method.
Disclosure of Invention
The invention aims to provide an antistatic EVA foam composite material and a preparation method thereof, the formula of the invention is scientific and reasonable, the process flow is simple and practical, and aiming at that EVA has very high resistivity and poor antistatic performance, the novel antistatic agent is adopted, so that the produced EVA foam composite material has excellent antistatic performance and good mechanical property, has very wide application prospect and generates huge social and economic benefits.
In order to achieve the purpose, the invention is realized by the following technical scheme:
an antistatic EVA foam composite material comprises the following raw materials in parts by weight: 95-100 parts of ethylene-vinyl acetate copolymer (EVA), 1-10 parts of antistatic agent, 2.5-3 parts of foaming agent AC, 0.4 part of stearic acid, 0.5 part of zinc stearate, 0.7 part of zinc oxide and 0.9 part of dicumyl peroxide; the antistatic agent is a three-dimensional graphene hollow sphere.
The content of a vinyl acetate matrix in the ethylene-vinyl acetate copolymer is 14-19%.
The three-dimensional graphene hollow sphere is prepared by a carbonization coating template method, and the carbon source is triethylene glycol, and the method specifically comprises the following steps:
1) preparing a nickel particle template: 1.2 g of NiCl2•6H2Dissolving O particles in 20mL of glycol, placing the mixture in a magnetic stirrer for stirring, after the O particles are uniformly dissolved, dropwise adding 20mL of 80% hydrazine hydrate solution to turn into light purple, and then slowly dropwise adding 2.5mL of 5mol/L NaOH solution; after reacting for 30min, the bottom of the solution is black particles, and the upper layer is a clear solution, namely the reaction is finished; washing the prepared nickel particles with deionized water, performing suction filtration, and performing vacuum drying at 60 ℃;
2) preparing three-dimensional graphene hollow spheres: adding the nickel particles prepared in the step 1) into a flask, adding 20-40mL of triethylene glycol, adding 2mL of NaOH solution with the concentration of 5mol/L, mechanically stirring, and heating and refluxing at 220 ℃ for 12 h; after the reaction is finished, cooling and filtering the obtained product, and drying at 60 ℃ to obtain black powder; putting black powder into a tube furnace, carbonizing at 500 ℃ for 1 h under the protection of argon, and heating at a rate of 10 ℃/min; taking out, pouring the powder into a beaker, and etching for 4-5h at 90 ℃ by using dilute hydrochloric acid with the concentration of 3 mol/L; and filtering, cleaning and drying to obtain the three-dimensional graphene hollow sphere powder.
A method of making an antistatic EVA foam composite as described above, comprising the steps of:
1) uniformly mixing EVA, an antistatic agent, stearic acid, zinc stearate, zinc oxide, dicumyl peroxide and a foaming agent AC, and then placing the mixture in a preheated extruder, wherein the temperature of each zone is 110-120 ℃, and the extrusion mixing is carried out at the rotating speed of 20 rpm;
2) quickly transferring the mixture obtained in the step 1) to an open mill, mixing for 10-20min, and pressing the materials into 3-5mm slices;
3) weighing a certain mass of the sheet prepared in the step 2) according to the volume of the mould (the mass of the sheet is 1.2 times of the volume of the mould), placing the sheet into a preheated mould cavity of a flat vulcanizing machine, and carrying out mould pressing and foaming for 8-10min at the temperature of 170 ℃ under the pressure of 10MPa to obtain the antistatic EVA foam composite material.
The invention adopts the three-dimensional graphene hollow sphere as the antistatic agent to prepare the antistatic EVA foam composite material. The three-dimensional graphene structure has large pi bonds, and similar to benzene rings, pi electrons can be self-excited in molecular chainsBy moving, the carrier mobility of graphene at room temperature is about 15000cm2V · s, which is more than 10 times that of silicon material, is more than twice that of indium antimonide, which is the substance known to have the highest carrier mobility. And thus has excellent conductivity. In addition, the compatibility of the graphene and the EVA matrix is good, the graphene can be uniformly dispersed in the matrix, and the mechanical property of the EVA matrix is improved. In the existing EVA foam material, the antistatic treatment is mainly carried out on carbon black and metal powder, and a certain effect can be obtained only by large addition amount. The three-dimensional graphene hollow sphere is used as an antistatic agent of the EVA foam material, the addition amount is small, the antistatic effect is obvious, the antistatic EVA foam composite material is successfully prepared, meanwhile, a new thought and a new exploration are provided for developing a novel antistatic agent in future, and the three-dimensional graphene hollow sphere has huge social and economic benefits in practical application.
The invention has the beneficial effects that: the antistatic EVA foam composite material prepared by the invention has the advantages of scientific and reasonable formula, simple and practical process flow, small addition amount by adopting the three-dimensional graphene hollow spheres as the antistatic agent, good compatibility with a substrate, easy dispersion, excellent antistatic effect and excellent mechanical property. Meanwhile, a new idea and exploration are provided for developing novel antistatic agents in the future, and the antistatic agent has great social and economic benefits in practical application.
Drawings
Fig. 1 is an XRD pattern of three-dimensional graphene;
fig. 2 is an SEM image of three-dimensional graphene;
FIG. 3 is a plot of the volume resistance change (logarithmic value, lg (ρ) for the antistatic EVA foam composite prepared in accordance with the present inventionV)）。
Detailed Description
The present invention will be further described with reference to the following examples, but the present invention is not limited to these examples.
Example 1
A method for preparing an antistatic EVA foam composite material comprises the following specific steps:
1) preparing a nickel particle template: 1.2 g of NiCl2•6H2Dissolving O particles in 20mL of glycol, placing the mixture in a magnetic stirrer for stirring, after the O particles are uniformly dissolved, dropwise adding 20mL of 80% hydrazine hydrate solution to turn into light purple, and then slowly dropwise adding 2.5mL of 5mol/L NaOH solution; after reacting for 30min, the bottom of the solution is black particles, and the upper layer is a clear solution, namely the reaction is finished; washing the prepared nickel particles with deionized water, performing suction filtration, and performing vacuum drying at 60 ℃;
2) preparing three-dimensional graphene hollow spheres: adding the prepared nickel particles into a flask, adding 20mL of triethylene glycol, adding 2mL of NaOH solution with the concentration of 5mol/L, mechanically stirring, and heating and refluxing at 220 ℃ for 12 hours; after the reaction is finished, cooling and filtering the obtained product, and drying at 60 ℃ to obtain black powder; putting black powder into a tube furnace, carbonizing at 500 ℃ for 1 h under the protection of argon, and heating at a rate of 10 ℃/min; taking out the powder, pouring the powder into a beaker, and etching the nickel particle template for 4 hours at 90 ℃ by using dilute hydrochloric acid with the concentration of 3 mol/L; filtering, cleaning and drying to obtain three-dimensional graphene hollow sphere powder;
3) uniformly mixing 100 parts by weight of EVA (ethylene vinyl acetate), 1 part by weight of three-dimensional graphene hollow sphere powder, 0.4 part by weight of stearic acid, 0.5 part by weight of zinc stearate, 0.7 part by weight of zinc oxide, 0.9 part by weight of dicumyl peroxide and 2.5 parts by weight of AC (alternating current), and then putting the mixture into a preheated extruder, wherein the temperature of each zone is 110 ℃, and the rotating speed is 20rpm for extrusion and mixing;
4) quickly transferring the mixture obtained in the step 3) to an open mill, mixing for 10min, and pressing the materials into 3mm slices;
5) weighing a certain mass of the sheet prepared in the step 4) according to the volume of the mould (the mass of the sheet is 1.2 times of the volume of the mould), placing the sheet into a preheated mould cavity of a flat vulcanizing machine, and carrying out compression foaming at 10MPa and 170 ℃ for 8min to obtain the antistatic EVA foam composite material.
Example 2
A method for preparing an antistatic EVA foam composite material comprises the following specific steps:
1) preparing a nickel particle template: 1.2 g of NiCl2•6H2O particles dissolved in 20mL of ethylene glycolStirring in a magnetic stirrer, after the hydrazine hydrate is dissolved uniformly, dropwise adding 20mL of 80% hydrazine hydrate solution to turn into light purple, and slowly dropwise adding 2.5mL of 5mol/L NaOH solution; after reacting for 30min, the bottom of the solution is black particles, and the upper layer is a clear solution, namely the reaction is finished; washing the prepared nickel particles with deionized water, performing suction filtration, and performing vacuum drying at 60 ℃;
2) preparing three-dimensional graphene hollow spheres: adding the prepared nickel particles into a flask, adding 40mL of triethylene glycol, adding 2mL of NaOH solution with the concentration of 5mol/L, mechanically stirring, and heating and refluxing at 220 ℃ for 12 hours; after the reaction is finished, cooling and filtering the obtained product, and drying at 60 ℃ to obtain black powder; and (3) putting the black powder into a tube furnace, and carbonizing at 500 ℃ for 1 h under the protection of argon at the heating rate of 10 ℃/min. Taking out the powder, pouring the powder into a beaker, and etching the nickel particle template for 5 hours at 90 ℃ by using dilute hydrochloric acid with the concentration of 3 mol/L; filtering, cleaning and drying to obtain three-dimensional graphene hollow sphere powder;
3) uniformly mixing 100 parts by weight of EVA (ethylene vinyl acetate), 2 parts by weight of three-dimensional graphene hollow sphere powder, 0.4 part by weight of stearic acid, 0.5 part by weight of zinc stearate, 0.7 part by weight of zinc oxide, 0.9 part by weight of dicumyl peroxide and 2.5 parts by weight of AC (alternating current), and then putting the mixture into a preheated extruder, wherein the temperature of each zone is 110 ℃, and the rotating speed is 20rpm for extrusion and mixing;
4) quickly transferring the mixture obtained in the step 3) into an open mill, mixing for 20min, and pressing the materials into 5mm slices;
5) weighing a certain mass of the sheet prepared in the step 4) according to the volume of the mould (the mass of the sheet is 1.2 times of the volume of the mould), placing the sheet into a preheated mould cavity of a flat vulcanizing machine, and carrying out compression foaming at 10MPa and 170 ℃ for 10min to obtain the antistatic EVA foam composite material.
Example 3
A method for preparing an antistatic EVA foam composite material comprises the following specific steps:
1) preparing a nickel particle template: 1.2 g of NiCl2•6H2Dissolving O particles in 20mL of ethylene glycol, and stirring in a magnetic stirrerStirring, after the mixture is uniformly dissolved, dropwise adding 20mL of 80% hydrazine hydrate solution into the mixture to change the hydrazine hydrate solution into light purple, and then slowly dropwise adding 2.5mL of 5mol/L NaOH solution; after reacting for 30min, the bottom of the solution is black particles, and the upper layer is a clear solution, namely the reaction is finished; washing the prepared nickel particles with deionized water, performing suction filtration, and performing vacuum drying at 60 ℃;
2) preparing three-dimensional graphene hollow spheres: adding the prepared nickel particles into a flask, adding 30mL of triethylene glycol, adding 2mL of NaOH solution with the concentration of 5mol/L, mechanically stirring, and heating and refluxing at 220 ℃ for 12 hours; after the reaction is finished, cooling and filtering the obtained product, and drying at 60 ℃ to obtain black powder; putting black powder into a tube furnace, carbonizing at 500 ℃ for 1 h under the protection of argon, and heating at a rate of 10 ℃/min; taking out, pouring the powder into a beaker, and etching the nickel particle template by using dilute hydrochloric acid with the concentration of 3 mol/L at 90 ℃ for 4.5 hours; filtering, cleaning and drying to obtain three-dimensional graphene hollow sphere powder;
3) uniformly mixing 100 parts by weight of EVA (ethylene vinyl acetate), 3 parts by weight of three-dimensional graphene hollow sphere powder, 0.4 part by weight of stearic acid, 0.5 part by weight of zinc stearate, 0.7 part by weight of zinc oxide, 0.9 part by weight of dicumyl peroxide and 2.5 parts by weight of AC (alternating current), and then putting the mixture into a preheated extruder, wherein the temperature of each zone is 110 ℃, and the rotating speed is 20rpm for extrusion and mixing;
4) quickly transferring the mixture obtained in the step 3) into an open mill, mixing for 15min, and pressing the materials into 4mm slices;
5) weighing a certain mass of the sheet prepared in the step 4) according to the volume of the mould (the mass of the sheet is 1.2 times of the volume of the mould), placing the sheet into a preheated mould cavity of a flat vulcanizing machine, and carrying out compression foaming at 10MPa and 170 ℃ for 9min to obtain the antistatic EVA foam composite material.
Example 4
A method for preparing an antistatic EVA foam composite material comprises the following specific steps:
1) preparing a nickel particle template: 1.2 g of NiCl2•6H2Dissolving O particles in 20mL of glycol, placing the mixture in a magnetic stirrer for stirring, and dripping 20 percent of the solution after the O particles are uniformly dissolvedChanging mL of hydrazine hydrate solution with the mass fraction of 80% into light purple, and slowly dropwise adding 2.5mL of NaOH solution with the concentration of 5 mol/L; after reacting for 30min, the bottom of the solution is black particles, and the upper layer is a clear solution, namely the reaction is finished; washing the prepared nickel particles with deionized water, performing suction filtration, and performing vacuum drying at 60 ℃;
2) preparing three-dimensional graphene hollow spheres: adding the prepared nickel particles into a flask, adding 30mL of triethylene glycol, adding 2mL of NaOH solution with the concentration of 5mol/L, mechanically stirring, and heating and refluxing at 220 ℃ for 12 hours; after the reaction is finished, cooling and filtering the obtained product, and drying at 60 ℃ to obtain black powder; putting black powder into a tube furnace, carbonizing at 500 ℃ for 1 h under the protection of argon, and heating at a rate of 10 ℃/min; taking out, pouring the powder into a beaker, and etching the nickel particle template by using dilute hydrochloric acid with the concentration of 3 mol/L at 90 ℃ for 4.5 hours; filtering, cleaning and drying to obtain three-dimensional graphene hollow sphere powder;
3) uniformly mixing 100 parts by weight of EVA (ethylene vinyl acetate), 4 parts by weight of three-dimensional graphene hollow sphere powder, 0.4 part by weight of stearic acid, 0.5 part by weight of zinc stearate, 0.7 part by weight of zinc oxide, 0.9 part by weight of dicumyl peroxide and 2.5 parts by weight of AC (alternating current), and then putting the mixture into a preheated extruder, wherein the temperature of each zone is 110 ℃, and the rotating speed is 20rpm for extrusion and mixing;
4) quickly transferring the mixture obtained in the step 3) into an open mill, mixing for 15min, and pressing the materials into 4mm slices;
5) weighing a certain mass of the sheet prepared in the step 4) according to the volume of the mould (the mass of the sheet is 1.2 times of the volume of the mould), placing the sheet into a preheated mould cavity of a flat vulcanizing machine, and carrying out compression foaming at 10MPa and 170 ℃ for 9min to obtain the antistatic EVA foam composite material.
Example 5
A method for preparing an antistatic EVA foam composite material comprises the following specific steps:
1) preparing a nickel particle template: 1.2 g of NiCl2•6H2Dissolving O particles in 20mL of glycol, placing the mixture in a magnetic stirrer for stirring, and after the O particles are uniformly dissolved, dropwise adding 20mL of 80 mass percent hydrazine hydrate solutionThe liquid turns to light purple, and then 2.5mL of NaOH solution with the concentration of 5mol/L is slowly dripped; after reacting for 30min, the bottom of the solution is black particles, and the upper layer is a clear solution, namely the reaction is finished; washing the prepared nickel particles with deionized water, performing suction filtration, and performing vacuum drying at 60 ℃;
2) preparing three-dimensional graphene hollow spheres: adding the prepared nickel particles into a flask, adding 30mL of triethylene glycol, adding 2mL of NaOH solution with the concentration of 5mol/L, mechanically stirring, and heating and refluxing at 220 ℃ for 12 hours; after the reaction is finished, cooling and filtering the obtained product, and drying at 60 ℃ to obtain black powder; putting black powder into a tube furnace, carbonizing at 500 ℃ for 1 h under the protection of argon, and heating at a rate of 10 ℃/min; taking out, pouring the powder into a beaker, and etching the nickel particle template by using dilute hydrochloric acid with the concentration of 3 mol/L at 90 ℃ for 4.5 hours; filtering, cleaning and drying to obtain three-dimensional graphene hollow sphere powder;
3) uniformly mixing 100 parts by weight of EVA (ethylene vinyl acetate), 5 parts by weight of three-dimensional graphene hollow sphere powder, 0.4 part by weight of stearic acid, 0.5 part by weight of zinc stearate, 0.7 part by weight of zinc oxide, 0.9 part by weight of dicumyl peroxide and 2.5 parts by weight of AC (alternating current), and then putting the mixture into a preheated extruder, wherein the temperature of each zone is 110 ℃, and the rotating speed is 20rpm for extrusion and mixing;
4) quickly transferring the mixture obtained in the step 3) into an open mill, mixing for 15min, and pressing the materials into 3-5mm slices;
5) weighing a certain mass of the sheet prepared in the step 4) according to the volume of the mould (the mass of the sheet is 1.2 times of the volume of the mould), placing the sheet into a preheated mould cavity of a flat vulcanizing machine, and carrying out compression foaming at 10MPa and 170 ℃ for 9min to obtain the antistatic EVA foam composite material.
Comparative example 1
A method for preparing an EVA foam composite material comprises the following specific steps:
1) uniformly mixing 100 parts by weight of EVA, 0.4 part by weight of stearic acid, 0.5 part by weight of zinc stearate, 0.7 part by weight of zinc oxide, 0.9 part by weight of dicumyl peroxide and 2.5 parts by weight of AC, and then putting the mixture into a preheated extruder, wherein the temperature of each zone is 110 ℃, and the rotating speed is 20rpm for extrusion and mixing;
2) quickly transferring the mixture obtained in the step 1) to an open mill, mixing for 15min, and pressing the materials into 4mm slices;
3) weighing a certain mass of the sheet prepared in the step 2) according to the volume of the mould (the mass of the sheet is 1.2 times of the volume of the mould), placing the sheet into a preheated mould cavity of a flat vulcanizing machine, and carrying out compression foaming at 10MPa and 170 ℃ for 9min to obtain the antistatic EVA foam composite material.
Performance testing
FIG. 3 is a plot of the volume resistance change of an antistatic EVA foam composite. As can be seen from the figure, the EVA foam composite material without adding the three-dimensional graphene hollow sphere powder has lg (rho)V) The value is about 14, the composite material has no antistatic property, when 3 parts by weight of three-dimensional graphene hollow sphere powder is added, the volume resistivity of the EVA foam composite material is obviously reduced, and when the addition amount reaches 6 parts by weight, the composite material has good antistatic property.
The above description is only a preferred embodiment of the present invention, and all equivalent changes and modifications made in accordance with the claims of the present invention should be covered by the present invention.

Claims (1)

1. An antistatic EVA foam composite material is characterized in that: the raw materials comprise the following components in parts by weight: 95-100 parts of ethylene-vinyl acetate copolymer, 1-10 parts of antistatic agent, 2.5-3 parts of foaming agent AC, 0.4 part of stearic acid, 0.5 part of zinc stearate, 0.7 part of zinc oxide and 0.9 part of dicumyl peroxide; the antistatic agent is a three-dimensional graphene hollow sphere;
the content of vinyl acetate monomer in the ethylene-vinyl acetate copolymer is 14-19%;
the three-dimensional graphene hollow sphere is prepared by a carbonization coating template method, and a carbon source is triethylene glycol;
the specific preparation method of the three-dimensional graphene hollow sphere comprises the following steps:
1) preparing a nickel particle template: 1.2 g of NiCl2•6H2Dissolving O particles in 20mL of ethylene glycol, placing the mixture in a magnetic stirrer for stirring, and dissolving the O particlesAfter the mixture is uniform, 20mL of hydrazine hydrate solution with the mass fraction of 80% is dripped to become light purple, and then 2.5mL of NaOH solution with the concentration of 5mol/L is dripped slowly; after reacting for 30min, the bottom of the solution is black particles, and the upper layer is a clear solution, namely the reaction is finished; washing the prepared nickel particles with deionized water, performing suction filtration, and performing vacuum drying at 60 ℃;
2) preparing three-dimensional graphene hollow spheres: adding the nickel particles prepared in the step 1) into a flask, adding 20-40mL of triethylene glycol, adding 2mL of NaOH solution with the concentration of 5mol/L, mechanically stirring, and heating and refluxing at 220 ℃ for 12 h; after the reaction is finished, cooling and filtering the obtained product, and drying at 60 ℃ to obtain black powder; putting black powder into a tube furnace, carbonizing at 500 ℃ for 1 h under the protection of argon, and heating at a rate of 10 ℃/min; taking out, pouring the powder into a beaker, and etching for 4-5h at 90 ℃ by using dilute hydrochloric acid with the concentration of 3 mol/L; filtering, cleaning and drying to obtain three-dimensional graphene hollow sphere powder;
the preparation method of the antistatic EVA foam composite material comprises the following steps:
1) uniformly mixing ethylene-vinyl acetate copolymer, antistatic agent, stearic acid, zinc stearate, zinc oxide, dicumyl peroxide and foaming agent AC, placing the mixture into a preheated extruder, extruding and mixing the mixture in each zone at the temperature of 110-120 ℃ and at the rotating speed of 20 rpm;
2) quickly transferring the mixture obtained in the step 1) to an open mill, mixing for 10-20min, and pressing the materials into 3-5mm slices;
3) weighing a certain mass of the sheet prepared in the step 2) according to the volume of the mould, placing the sheet in a preheated mould cavity of a press vulcanizer, and carrying out mould pressing and foaming for 8-10min at the temperature of 170 ℃ under the pressure of 10MPa to obtain the antistatic EVA foam composite material.
CN201810485939.XA 2018-05-21 2018-05-21 Antistatic EVA foam composite material and preparation method thereof Active CN108752722B (en)

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JP2002194127A (en) * 2000-12-25 2002-07-10 Nagahiko Kanazawa Anti-static rubber and eva foam composition
CN102766304A (en) * 2012-07-31 2012-11-07 上海交通大学 Three-dimensional graphene network-contained high conductivity polymer composite material and preparation method thereof

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