CN114634681A - High-elastic anti-static sole and preparation method thereof - Google Patents
High-elastic anti-static sole and preparation method thereof Download PDFInfo
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- CN114634681A CN114634681A CN202210256673.8A CN202210256673A CN114634681A CN 114634681 A CN114634681 A CN 114634681A CN 202210256673 A CN202210256673 A CN 202210256673A CN 114634681 A CN114634681 A CN 114634681A
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- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- 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
- C08J9/104—Hydrazines; Hydrazides; Semicarbazides; Semicarbazones; Hydrazones; Derivatives thereof
- C08J9/105—Hydrazines; Hydrazides; Semicarbazides; Semicarbazones; Hydrazones; Derivatives thereof containing sulfur
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- A—HUMAN NECESSITIES
- A43—FOOTWEAR
- A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
- A43B13/00—Soles; Sole-and-heel integral units
- A43B13/02—Soles; Sole-and-heel integral units characterised by the material
- A43B13/04—Plastics, rubber or vulcanised fibre
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- C08J2205/00—Foams characterised by their properties
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- C08J2205/052—Closed cells, i.e. more than 50% of the pores are closed
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- C08J2323/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
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Abstract
A high-elastic antistatic sole and its preparation method, the high-elastic antistatic sole is compounded by outsole and insole; the outsole comprises the following raw materials: polyvinyl chloride, mica powder, acetylene black, carbon fiber, zinc oxide, a foaming agent, di-tert-butylperoxyisopropyl benzene, epoxidized soybean oil, an antioxidant, sodium dodecyl sulfate and laurylamine polyoxyethylene ether; the foaming agent is composed of p-toluenesulfonyl hydrazide, sodium bicarbonate and polyethylene glycol according to a certain proportion, the prepared sole has lower surface resistivity, and can meet the requirement of static resistance, and the antistatic effect of the prepared sole is ensured by limiting the laurylamine polyoxyethylene ether to modify mica powder and then using the modified mica powder in cooperation with carbon fiber, acetylene black and sodium dodecyl sulfate.
Description
Technical Field
The invention belongs to the field of sole preparation, and particularly relates to a high-elastic anti-static sole and a preparation method thereof.
Background
Different shoes have different emphasis on the requirements of soles, for example, the wear resistance requirement of sports soles is very high, leisure soles are light and soft, mountaineering soles must be hard, one working shoe worn in production workshops and advanced laboratories of the microelectronic industry for reducing or eliminating static hazards needs to be antistatic, and the antistatic shoes can eliminate static accumulation of human bodies and prevent potential work hazards such as combustion, explosion and the like caused by static of the human bodies. Meeting these different requirements depends on the different material formulations used for making the sole.
In the shoe making work, particularly in the manufacturing process of the anti-static rubber shoes, a liquid type antistatic agent can be added, but the quality problems of rubber blooming and the like can be caused; in order to solve the problem, the liquid antistatic agent can be replaced by acetylene carbon black with large dose, but the acetylene carbon black with large dose can influence the wear resistance of shoes, and the liquid antistatic agent is not suitable for soles with special requirements, especially military shoes, the terrain of soldiers walking is complex, the requirements on all aspects of the soles are higher, and the requirements on the military shoes are not up to standard
Disclosure of Invention
The object of the present invention is to overcome the drawbacks of the prior art and to provide a highly elastic antistatic sole and a method for manufacturing the same.
The invention adopts the following technical scheme:
a high-elastic antistatic sole is composed of an outsole and a midsole;
the outsole comprises the following raw materials in parts by weight: 85-100 parts of polyvinyl chloride, 5-10 parts of mica powder, 2-4 parts of acetylene carbon black, 3-6 parts of carbon fiber, 2-5 parts of zinc oxide, 6-10 parts of foaming agent, 5-8 parts of di-tert-butylperoxyisopropyl benzene, 2-5 parts of epoxidized soybean oil, 1-2 parts of antioxidant, 3-8 parts of sodium dodecyl sulfate and 1-3 parts of laurylamine polyoxyethylene ether;
the foaming agent is composed of p-toluenesulfonyl hydrazide, sodium bicarbonate and polyethylene glycol according to the mass ratio of 1:0.65-0.78: 0.25-0.36.
Preferably, the midsole consists of the following raw materials in parts by weight: 60-70 parts of ethylene-vinyl acetate copolymer, 30-40 parts of styrene butadiene rubber, 5-7 parts of azodiisobutyronitrile, 2-3 parts of magnesium bicarbonate, 5-8 parts of dibenzoyl peroxide, 1-3 parts of fatty alcohol-polyoxyethylene ether sodium carboxylate, 6-10 parts of stearic acid, 5-7 parts of calcium carbonate, 2-3 parts of triethylene diamine and 8-12 parts of talcum powder.
Preferably, the antioxidant is 2-tert-butyl-4-methylphenol.
A preparation method of a high-elastic antistatic sole comprises the following steps:
step one, preparing laurylamine polyoxyethylene ether into a solution with the mass fraction of 1.6%, then uniformly spraying the solution on mica powder, and drying to form modified mica powder;
step two, mixing the modified mica powder prepared in the step one with polyvinyl chloride, mica powder, acetylene carbon black, carbon fiber, zinc oxide, a foaming agent, di-tert-butylperoxyisopropyl benzene, epoxidized soybean oil, an antioxidant and sodium dodecyl sulfate, and then placing the mixture into a mold;
step three, heating the upper mold of the mold to the temperature of 180-class sand 200 ℃, heating the lower mold to the temperature of 150-class sand 160 ℃, keeping for 2-3min, cooling and shaping for more than 2min, and demolding to obtain the outsole;
step four, preparing the middle sole;
and fifthly, spot-coating shoe glue on the outsole prepared in the step three, and then compounding the prepared midsole on the outsole to form the high-elastic anti-static shoe sole.
Preferably, in the fourth step, the preparation method of the midsole comprises the following steps:
A. adding the weighed ethylene-vinyl acetate copolymer, styrene butadiene rubber, stearic acid, calcium carbonate, triethylene diamine and talcum powder into an internal mixer at the temperature of 85-95 ℃ for blending and banburying for 6-10min, and taking out;
B. adding the mixture after banburying into an open mill, then adding ethylenediamine, azodiisobutyronitrile, magnesium bicarbonate, dibenzoyl peroxide and sodium fatty alcohol polyoxyethylene ether carboxylate, and open milling the zipper pull at the open milling temperature of 75-85 ℃;
C. granulating the treated material, and cooling to obtain middle-bottom foamed particles;
D. and placing the prepared midsole foaming particles in a mold, and foaming for 5-6min at the temperature of 135-145 ℃ to obtain the midsole.
Preferably, the granulation temperature of the midsole foaming particles is 80-90 ℃.
As can be seen from the above description of the present invention, compared with the prior art, the beneficial effects of the present invention are:
firstly, the sole prepared by the invention has lower surface resistivity, can meet the requirement of static resistance, and can ensure the antistatic effect of the prepared sole by limiting the laurylamine polyoxyethylene ether to modify mica powder and then using the modified mica powder in cooperation with carbon fiber, acetylene carbon black and sodium dodecyl sulfate; meanwhile, mica powder can be used in cooperation with zinc oxide as a reinforcing agent, so that the tensile strength and the impact strength of the prepared sole are improved while the cost is reduced;
secondly, the outsole is matched with p-toluenesulfonyl hydrazide by limiting sodium bicarbonate and polyethylene glycol, and is used in cooperation with the epoxidized soybean oil, so that the prepared outsole forms a closed pore structure, has small shrinkage and deformation, does not collapse pores, ensures the elasticity of the prepared outsole, and meets the wearing requirement;
thirdly, the insole is formed by limiting the combination of ethylenediamine, magnesium bicarbonate and azodiisobutyronitrile as foaming agents, so that the prepared insole has high porosity, fine and uniform pores and small average pore diameter, and the insole has light and breathable performance and meets the wearing requirement.
Detailed Description
The invention is further described below by means of specific embodiments.
A high-elastic antistatic sole is composed of a big sole and a middle sole.
The outsole comprises the following raw materials in parts by weight: 85-100 parts of polyvinyl chloride, 5-10 parts of mica powder, 2-4 parts of acetylene carbon black, 3-6 parts of carbon fiber, 2-5 parts of zinc oxide, 6-10 parts of foaming agent, 5-8 parts of di-tert-butylperoxyisopropyl benzene, 2-5 parts of epoxidized soybean oil, 1-2 parts of 2-tert-butyl-4-methylphenol, 3-8 parts of sodium dodecyl sulfate and 1-3 parts of laurylamine polyoxyethylene ether; wherein the foaming agent is composed of p-toluenesulfonyl hydrazide, sodium bicarbonate and polyethylene glycol according to the mass ratio of 1:0.65-0.78: 0.25-0.36.
The insole consists of the following raw materials in parts by weight: 60-70 parts of ethylene-vinyl acetate copolymer, 30-40 parts of styrene butadiene rubber, 5-7 parts of azodiisobutyronitrile, 2-3 parts of magnesium bicarbonate, 5-8 parts of dibenzoyl peroxide, 1-3 parts of fatty alcohol-polyoxyethylene ether sodium carboxylate, 6-10 parts of stearic acid, 5-7 parts of calcium carbonate, 2-3 parts of triethylene diamine and 8-12 parts of talcum powder.
A preparation method of a high-elastic antistatic sole comprises the following steps:
step one, preparing laurylamine polyoxyethylene ether into a solution with the mass fraction of 1.6%, then uniformly spraying the solution on mica powder, and drying to form modified mica powder;
step two, mixing the modified mica powder prepared in the step one with polyvinyl chloride, mica powder, acetylene carbon black, carbon fiber, zinc oxide, a foaming agent, di-tert-butylperoxyisopropyl benzene, epoxidized soybean oil, an antioxidant and sodium dodecyl sulfate, and then placing the mixture into a mold;
step three, heating the upper mold of the mold to the temperature of 180-class sand 200 ℃, heating the lower mold to the temperature of 150-class sand 160 ℃, keeping for 2-3min, cooling and shaping for more than 2min, and demolding to obtain the outsole;
step four, preparing the middle sole;
and fifthly, spot-coating shoe glue on the outsole prepared in the step three, and then compounding the prepared midsole on the outsole to form the high-elastic anti-static shoe sole.
The preparation method of the midsole comprises the following steps:
A. adding the weighed ethylene-vinyl acetate copolymer, styrene butadiene rubber, stearic acid, calcium carbonate, triethylene diamine and talcum powder into an internal mixer at the temperature of 85-95 ℃ for blending and banburying for 6-10min, and taking out;
B. adding the mixture after banburying into an open mill, then adding ethylenediamine, azodiisobutyronitrile, magnesium bicarbonate, dibenzoyl peroxide and sodium fatty alcohol polyoxyethylene ether carboxylate, and open milling the zipper pull at the open milling temperature of 75-85 ℃;
C. granulating the treated material, and cooling to obtain middle-bottom foamed particles, wherein the granulation temperature is 80-90 ℃;
D. and placing the prepared midsole foaming particles in a mold, and foaming for 5-6min at the temperature of 135-145 ℃ to obtain the midsole.
Example 1
A high-elastic antistatic sole is composed of a big sole and a middle sole.
The outsole comprises the following raw materials in parts by weight: 85 parts of polyvinyl chloride, 5 parts of mica powder, 4 parts of acetylene carbon black, 3 parts of carbon fiber, 5 parts of zinc oxide, 6 parts of a foaming agent, 5 parts of di-tert-butylperoxyisopropyl benzene, 5 parts of epoxidized soybean oil, 1 part of 2-tert-butyl-4-methylphenol, 8 parts of lauryl sodium sulfate and 1 part of laurylamine polyoxyethylene ether; wherein the foaming agent is composed of p-toluenesulfonyl hydrazide, sodium bicarbonate and polyethylene glycol according to the mass ratio of 1:0.65: 0.25.
The insole consists of the following raw materials in parts by weight: 60 parts of ethylene-vinyl acetate copolymer, 40 parts of butadiene styrene rubber, 5 parts of azodiisobutyronitrile, 3 parts of magnesium bicarbonate, 5 parts of dibenzoyl peroxide, 3 parts of sodium fatty alcohol polyoxyethylene ether carboxylate, 6 parts of stearic acid, 7 parts of calcium carbonate, 2 parts of triethylene diamine and 12 parts of talcum powder.
A preparation method of a high-elastic antistatic sole comprises the following steps:
step one, preparing laurylamine polyoxyethylene ether into a solution with the mass fraction of 1.6%, then uniformly spraying the solution on mica powder, and drying to form modified mica powder;
step two, mixing the modified mica powder prepared in the step one with polyvinyl chloride, mica powder, acetylene carbon black, carbon fiber, zinc oxide, a foaming agent, di-tert-butylperoxyisopropyl benzene, epoxidized soybean oil, an antioxidant and sodium dodecyl sulfate, and then placing the mixture into a mold;
step three, heating the upper die of the die to 180 ℃, heating the lower die to 150 ℃, keeping for 3min, cooling and shaping for more than 2min, and demolding to obtain the outsole;
step four, preparing the middle sole;
and fifthly, spot-coating shoe glue on the outsole prepared in the step three, and then compounding the prepared midsole on the outsole to form the high-elastic anti-static shoe sole.
The preparation method of the midsole comprises the following steps:
A. adding the weighed ethylene-vinyl acetate copolymer, styrene butadiene rubber, stearic acid, calcium carbonate, triethylene diamine and talcum powder into an internal mixer at the temperature of 85 ℃ for blending and banburying for 10min, and taking out;
B. adding the mixture after banburying into an open mill, then adding ethylenediamine, azodiisobutyronitrile, magnesium bicarbonate, dibenzoyl peroxide and sodium fatty alcohol polyoxyethylene ether carboxylate, and open milling the zipper pull at the open milling temperature of 75 ℃;
C. granulating the treated material, and cooling to obtain middle-bottom foamed particles, wherein the granulation temperature is 80 ℃;
D. and (3) placing the prepared midsole foaming particles in a mould, and foaming for 6min at the temperature of 135 ℃ to obtain the midsole.
Example 2
A high-elastic antistatic sole is composed of a big sole and a middle sole.
The outsole comprises the following raw materials in parts by weight: 100 parts of polyvinyl chloride, 10 parts of mica powder, 2 parts of acetylene carbon black, 6 parts of carbon fiber, 2 parts of zinc oxide, 10 parts of a foaming agent, 8 parts of di-tert-butylperoxyisopropyl benzene, 2 parts of epoxidized soybean oil, 2 parts of 2-tert-butyl-4-methylphenol, 3 parts of sodium dodecyl sulfate and 3 parts of laurylamine polyoxyethylene ether; wherein the foaming agent is composed of p-toluenesulfonyl hydrazide, sodium bicarbonate and polyethylene glycol according to the mass ratio of 1:0.78: 0.36.
The insole consists of the following raw materials in parts by weight: 70 parts of ethylene-vinyl acetate copolymer, 30 parts of butadiene styrene rubber, 7 parts of azodiisobutyronitrile, 2 parts of magnesium bicarbonate, 8 parts of dibenzoyl peroxide, 1 part of sodium fatty alcohol polyoxyethylene ether carboxylate, 10 parts of stearic acid, 5 parts of calcium carbonate, 3 parts of triethylene diamine and 8 parts of talcum powder.
A preparation method of a high-elastic antistatic sole comprises the following steps:
step one, preparing laurylamine polyoxyethylene ether into a solution with the mass fraction of 1.6%, then uniformly spraying the solution on mica powder, and drying to form modified mica powder;
step two, mixing the modified mica powder prepared in the step one with polyvinyl chloride, mica powder, acetylene carbon black, carbon fiber, zinc oxide, a foaming agent, di-tert-butylperoxyisopropyl benzene, epoxidized soybean oil, an antioxidant and sodium dodecyl sulfate, and then placing the mixture into a mold;
step three, heating the upper die of the die to 200 ℃, heating the lower die to 160 ℃, keeping for 2min, cooling and shaping for more than 2min, and demolding to obtain the outsole;
step four, preparing the middle sole;
and fifthly, spot-coating shoe glue on the outsole prepared in the step three, and then compounding the prepared midsole on the outsole to form the high-elastic anti-static shoe sole.
The preparation method of the midsole comprises the following steps:
A. adding the weighed ethylene-vinyl acetate copolymer, styrene butadiene rubber, stearic acid, calcium carbonate, triethylene diamine and talcum powder into an internal mixer at the temperature of 95 ℃ for blending and banburying for 6min, and taking out;
B. adding the mixture after banburying into an open mill, then adding ethylenediamine, azodiisobutyronitrile, magnesium bicarbonate, dibenzoyl peroxide and sodium fatty alcohol polyoxyethylene ether carboxylate, and open milling the zipper pull at the open milling temperature of 85 ℃;
C. granulating the treated material, and cooling to obtain middle-bottom foamed particles, wherein the granulation temperature is 90 ℃;
D. and (3) placing the prepared midsole foaming particles in a mould, and foaming for 5min at the temperature of 145 ℃ to obtain the midsole.
Example 3
A high-elastic antistatic sole is composed of a big sole and a middle sole.
The outsole comprises the following raw materials in parts by weight: 90 parts of polyvinyl chloride, 8 parts of mica powder, 3 parts of acetylene carbon black, 5 parts of carbon fiber, 3 parts of zinc oxide, 8 parts of a foaming agent, 6 parts of di-tert-butylperoxyisopropyl benzene, 3 parts of epoxidized soybean oil, 1.5 parts of 2-tert-butyl-4-methylphenol, 5 parts of sodium dodecyl sulfate and 2 parts of laurylamine polyoxyethylene ether; wherein the foaming agent is composed of p-toluenesulfonyl hydrazide, sodium bicarbonate and polyethylene glycol according to the mass ratio of 1:0.72: 0.32.
The insole consists of the following raw materials in parts by weight: 65 parts of ethylene-vinyl acetate copolymer, 35 parts of butadiene styrene rubber, 6 parts of azodiisobutyronitrile, 2.5 parts of magnesium bicarbonate, 6 parts of dibenzoyl peroxide, 2 parts of sodium fatty alcohol polyoxyethylene ether carboxylate, 8 parts of stearic acid, 6 parts of calcium carbonate, 2.5 parts of triethylene diamine and 10 parts of talcum powder.
A preparation method of a high-elastic antistatic sole comprises the following steps:
step one, preparing laurylamine polyoxyethylene ether into a solution with the mass fraction of 1.6%, then uniformly spraying the solution on mica powder, and drying to form modified mica powder;
step two, mixing the modified mica powder prepared in the step one with polyvinyl chloride, mica powder, acetylene carbon black, carbon fiber, zinc oxide, a foaming agent, di-tert-butylperoxyisopropyl benzene, epoxidized soybean oil, an antioxidant and sodium dodecyl sulfate, and then placing the mixture into a mold;
step three, heating the upper die of the die to 190 ℃, heating the lower die to 155 ℃, keeping for 2.5min, cooling and shaping for more than 2min, and demoulding to obtain the outsole;
step four, preparing the middle sole;
and fifthly, spot-coating shoe glue on the outsole prepared in the step three, and then compounding the prepared midsole on the outsole to form the high-elastic anti-static shoe sole.
The preparation method of the midsole comprises the following steps:
A. adding the weighed ethylene-vinyl acetate copolymer, styrene butadiene rubber, stearic acid, calcium carbonate, triethylene diamine and talcum powder into an internal mixer at the temperature of 90 ℃ for blending and banburying for 8min, and taking out;
B. adding the mixture after banburying into an open mill, then adding ethylenediamine, azodiisobutyronitrile, magnesium bicarbonate, dibenzoyl peroxide and sodium fatty alcohol polyoxyethylene ether carboxylate, and open-milling the zipper pull at the open-milling temperature of 80 ℃;
C. granulating the treated material, and cooling to obtain middle-bottom foamed particles, wherein the granulation temperature is 85 ℃;
D. and (3) placing the prepared midsole foaming particles into a mould, and foaming for 5.5min at the temperature of 140 ℃ to obtain the midsole.
The soles prepared by the three embodiments and the antistatic soles in the prior art are tested, and the following data are obtained:
TABLE 1 test data sheet for each example
| Item | Surface resistivity/omega | Impact strength/MPa | Tensile strength/MPa | Rebound resilience/%) |
| Example 1 | 3.3*106 | 32.5 | 40.8 | 58.2 |
| Example 2 | 3.2*106 | 33.2 | 41.6 | 58.7 |
| Example 3 | 3.1*106 | 33.9 | 42.7 | 59.3 |
| Comparative example | 5.9*109 | 19.5 | 32.4 | 43.1 |
As can be seen from Table 1, the sole prepared by the invention has lower surface resistivity and can meet the requirement of static resistance, and the antistatic effect of the prepared sole is ensured by limiting the synergistic use of the modified mica powder with the laurylamine polyoxyethylene ether, the carbon fiber, the acetylene carbon black and the sodium dodecyl sulfate; meanwhile, mica powder can be used in cooperation with zinc oxide as a reinforcing agent, so that the cost is reduced, and the tensile strength and the impact strength of the prepared sole are improved.
The above description is only a preferred embodiment of the present invention, and therefore should not be taken as limiting the scope of the invention, which is defined by the appended claims and their equivalents and modifications within the scope of the description.
Claims (6)
1. A high-elastic antistatic sole is characterized in that: is formed by compounding an outsole and a midsole;
the outsole comprises the following raw materials in parts by weight: 85-100 parts of polyvinyl chloride, 5-10 parts of mica powder, 2-4 parts of acetylene carbon black, 3-6 parts of carbon fiber, 2-5 parts of zinc oxide, 6-10 parts of foaming agent, 5-8 parts of di-tert-butylperoxyisopropyl benzene, 2-5 parts of epoxidized soybean oil, 1-2 parts of antioxidant, 3-8 parts of sodium dodecyl sulfate and 1-3 parts of laurylamine polyoxyethylene ether;
the foaming agent is composed of p-toluenesulfonyl hydrazide, sodium bicarbonate and polyethylene glycol according to the mass ratio of 1:0.65-0.78: 0.25-0.36.
2. The high-elastic antistatic shoe sole as claimed in claim 1, wherein: the insole consists of the following raw materials in parts by weight: 60-70 parts of ethylene-vinyl acetate copolymer, 30-40 parts of styrene butadiene rubber, 5-7 parts of azobisisobutyronitrile, 2-3 parts of magnesium bicarbonate, 5-8 parts of dibenzoyl peroxide, 1-3 parts of fatty alcohol polyoxyethylene ether sodium carboxylate, 6-10 parts of stearic acid, 5-7 parts of calcium carbonate, 2-3 parts of triethylene diamine and 8-12 parts of talcum powder.
3. The highly elastic antistatic shoe sole as claimed in claim 1, wherein: the antioxidant is 2-tert-butyl-4-methylphenol.
4. A preparation method of a high-elastic antistatic sole is characterized by comprising the following steps: the method comprises the following steps:
step one, preparing laurylamine polyoxyethylene ether into a solution with the mass fraction of 1.6%, then uniformly spraying the solution on mica powder, and drying to form modified mica powder;
step two, mixing the modified mica powder prepared in the step one with polyvinyl chloride, mica powder, acetylene carbon black, carbon fiber, zinc oxide, a foaming agent, di-tert-butylperoxyisopropyl benzene, epoxidized soybean oil, an antioxidant and sodium dodecyl sulfate, and then placing the mixture into a mold;
step three, heating the upper mold of the mold to the temperature of 180-class sand 200 ℃, heating the lower mold to the temperature of 150-class sand 160 ℃, keeping for 2-3min, cooling and shaping for more than 2min, and demolding to obtain the outsole;
step four, preparing the middle sole;
and fifthly, spot-coating shoe glue on the outsole prepared in the step three, and then compounding the prepared midsole on the outsole to form the high-elastic anti-static shoe sole.
5. The method for preparing a high-elastic antistatic sole as claimed in claim 4, wherein: in the fourth step, the preparation method of the midsole comprises the following steps:
A. adding the weighed ethylene-vinyl acetate copolymer, styrene butadiene rubber, stearic acid, calcium carbonate, triethylene diamine and talcum powder into an internal mixer at the temperature of 85-95 ℃ for blending and banburying for 6-10min, and taking out;
B. adding the mixture after banburying into an open mill, then adding ethylenediamine, azodiisobutyronitrile, magnesium bicarbonate, dibenzoyl peroxide and sodium fatty alcohol polyoxyethylene ether carboxylate, and open-milling the zipper pull at the open-milling temperature of 75-85 ℃;
C. granulating the treated material, and cooling to obtain middle-bottom foamed particles;
D. and placing the prepared midsole foaming particles in a mold, and foaming for 5-6min at the temperature of 135-145 ℃ to obtain the midsole.
6. The method for preparing a high-elastic antistatic sole as claimed in claim 5, wherein: the granulation temperature of the midsole foaming particles is 80-90 ℃.
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