CN113999464A - Rubber-plastic foam material and preparation method thereof - Google Patents
Rubber-plastic foam material and preparation method thereof Download PDFInfo
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- 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
- C08J9/30—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof by mixing gases into liquid compositions or plastisols, e.g. frothing with air
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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
- C08J9/0014—Use of organic additives
- C08J9/0023—Use of organic additives containing oxygen
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- 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
- C08J9/0014—Use of organic additives
- C08J9/0028—Use of organic additives containing nitrogen
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- 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
- C08J9/0061—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof characterized by the use of several polymeric components
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- 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
- C08J9/0066—Use of inorganic compounding ingredients
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2325/00—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an aromatic carbocyclic ring; Derivatives of such polymers
- C08J2325/02—Homopolymers or copolymers of hydrocarbons
- C08J2325/04—Homopolymers or copolymers of styrene
- C08J2325/08—Copolymers of styrene
- C08J2325/10—Copolymers of styrene with conjugated dienes
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2411/00—Characterised by the use of homopolymers or copolymers of chloroprene
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2423/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2423/02—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
- C08J2423/04—Homopolymers or copolymers of ethene
- C08J2423/06—Polyethene
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2489/00—Characterised by the use of proteins; Derivatives thereof
Abstract
The invention belongs to the technical field of foaming materials, in particular to a rubber-plastic foaming material and a preparation method thereof, which solve the problems of low foaming efficiency, large cell size, non-uniform cell distribution, certain influence on the performance of the rubber-plastic foaming material, high rejection rate and the like of a chemical foaming agent in the prior art, and the rubber-plastic foaming material comprises the following raw materials: polystyrene butadiene copolymer, chloroprene rubber, a vulcanizing agent, a filler, methyl stearate, polyethylene wax, aromatic oil and a foaming agent. The raw materials are simple to select, the preparation method is simple, the preparation conditions are mild, and the obtained rubber-plastic foam material has excellent tensile, tear, wear, resilience and compression properties, and also has excellent heat resistance, aging resistance, weathering resistance, oxidation resistance, aging resistance and other properties, and can be widely applied to the industries of electronics, household appliances, automobiles, sports and leisure and the like.
Description
Technical Field
The invention relates to the technical field of foaming materials, in particular to a rubber and plastic foaming material and a preparation method thereof.
Background
The soft foaming material is prepared by adding a catalyst, a foam stabilizer, a foaming agent and other auxiliary materials into raw materials such as plastics (PE, EVA and the like) and rubber (SBR, CR and the like), and foaming through physical foaming or crosslinking, so that a large amount of fine foams appear in the plastics and the rubber, the volume is increased, the density is reduced, the soft foaming material has the functions of buffering, sound absorption, shock absorption, heat preservation, filtration and the like, and is widely applied to industries such as electronics, household appliances, automobiles, sports leisure and the like. The soft foaming material has wide application, is closely related to the basic industry of national economy, and keeps the stable and continuous growth of about 20 percent for many years.
Rubber is known per se for its high elasticity, and excellent performance of rubber foam is an important organic foam. The rubber retains moderate rebound characteristics after being processed into a foamed material, and the material is very suitable for use as a cushioning material, or a vibration damping material. The rubber foaming material also has excellent tensile, tearing, wear-resisting, temperature-resisting and aging-resisting properties. The preparation method of the rubber foaming material is also disclosed, and the rubber foaming material is mainly prepared by foaming a chemical foaming agent. Most of the existing chemical foaming agents are chemically crosslinked and are prepared by a mould pressing foaming method. When the rubber is molded and foamed, a mixed blank needs to be prepared in advance, and then the rubber is foamed while being vulcanized in a mold, so that the material performance is stabilized, and even secondary vulcanization is needed, so that the problem of low efficiency exists, and for some parts with complex structures, the blank preparation is difficult, so that the application field is limited; secondly, the molded foaming rubber products such as tires have joints, and the joints have poor material performance, so that the rejection rate is high. In addition, the rubber foaming material prepared by the chemical foaming agent has the defects of large cell size, nonuniform cell distribution and certain influence on the performance of the rubber foaming material. Based on the statement, the invention provides a rubber and plastic foam material and a preparation method thereof.
Disclosure of Invention
The invention aims to solve the problems that a chemical foaming agent in the prior art has low foaming efficiency, large cell size, non-uniform cell distribution, certain influence on the performance of a rubber-plastic foaming material, high rejection rate and the like, and provides a rubber-plastic foaming material and a preparation method thereof.
The rubber-plastic foaming material comprises the following raw materials in parts by weight: 70-90 parts of polystyrene butadiene copolymer, 30-40 parts of chloroprene rubber, 5-12 parts of vulcanizing agent, 20-40 parts of filler, 1-4 parts of methyl stearate, 3-8 parts of polyethylene wax, 10-18 parts of aromatic oil and 2-5 parts of foaming agent.
Preferably, the rubber and plastic foaming material comprises the following raw materials in parts by weight: 75-85 parts of polystyrene butadiene copolymer, 32-38 parts of chloroprene rubber, 6-10 parts of vulcanizing agent, 25-35 parts of filler, 2-3 parts of methyl stearate, 4-7 parts of polyethylene wax, 12-16 parts of aromatic oil and 3-4 parts of foaming agent.
Preferably, the rubber and plastic foaming material comprises the following raw materials in parts by weight: 80 parts of polystyrene butadiene copolymer, 35 parts of chloroprene rubber, 8 parts of vulcanizing agent, 30 parts of filler, 2.5 parts of methyl stearate, 5.5 parts of polyethylene wax, 14 parts of aromatic oil and 3.5 parts of foaming agent.
Preferably, the vulcanizing agent is a compound of sulfur, copper dimethyldithiocarbamate and polyethylene glycol trimethoxysilylpropyl ether in a mass ratio of 5-7:1-2: 1.
Preferably, the filler is at least one of silicon dioxide, calcium carbonate, talcum powder, zinc oxide, titanium dioxide or calcined kaolin.
Preferably, the foaming agent is prepared by the following method: (1) weighing 30-50 parts of bone glue, 2-5 parts of sodium hydroxide, 1-3 parts of potassium stearate, 3-8 parts of triethanolamine stearate, 1-2 parts of sodium dodecyl sulfate and 300 parts of water 200 for later use; (2) adding bone glue, sodium hydroxide and triethanolamine stearate into water of 68-82 deg.C, grinding and mixing for 2-3h, and mixing to obtain mixed solution; (3) and (4) sequentially adding potassium stearate and sodium dodecyl sulfate into the mixed solution obtained in the step S2, preserving heat, stirring and mixing for 20-40min, and uniformly mixing to obtain the foaming agent.
The invention also provides a preparation method of the rubber-plastic foam material, which comprises the following steps:
s1, weighing the raw materials of the polystyrene-butadiene copolymer, the chloroprene rubber, a vulcanizing agent, a filler, methyl stearate, polyethylene wax, aromatic oil and a foaming agent for later use;
s2, adding the polystyrene butadiene copolymer, the chloroprene rubber and the aromatic oil into an internal mixer together, controlling the internal mixing temperature at 118-128 ℃, and mixing and internally mixing for 8-15min to obtain a mixed rubber material;
s3, adding the filler, the methyl stearate and the polyethylene wax into an internal mixer together, mixing and stirring for 15-25min, after fully and uniformly mixing, continuing to heat to 145 ℃ for 135 ℃, adding the vulcanizing agent and the foaming agent, vulcanizing and foaming for 3-10min, and then carrying out open milling and granulation to obtain the required rubber and plastic foaming material.
The rubber-plastic foam material provided by the invention has the following beneficial effects:
1. the invention adopts the polystyrene butadiene copolymer and the chloroprene rubber as the main rubber materials, the fillers, the methyl stearate and the polyethylene wax are added for mixing and banburying after banburying and mixing in the presence of aromatic oil, and finally the vulcanizing agent and the foaming agent are added for vulcanization foaming to prepare the required rubber-plastic foaming material.
2. The foaming agent is prepared by taking bone glue, sodium hydroxide, potassium stearate, triethanolamine stearate, sodium dodecyl sulfate and water as raw materials, adding water, grinding and mixing the bone glue, the sodium hydroxide and the triethanolamine stearate, adding the potassium stearate and the sodium dodecyl sulfate, stirring and mixing the mixture to prepare the foaming agent.
Detailed Description
The present invention will be further illustrated with reference to the following specific examples.
Example one
The invention provides a rubber-plastic foaming material which comprises the following raw materials in parts by weight: 70 parts of polystyrene butadiene copolymer, 30 parts of chloroprene rubber, 5 parts of vulcanizing agent, 20 parts of filler, 1 part of methyl stearate, 3 parts of polyethylene wax, 10 parts of aromatic oil and 2 parts of foaming agent;
wherein the vulcanizing agent is a compound of sulfur, copper dimethyldithiocarbamate and polyethylene glycol trimethoxysilylpropyl ether in a mass ratio of 5:1: 1;
the filler is silicon dioxide;
the foaming agent is prepared by the following method: (1) weighing 30 parts of bone glue, 2 parts of sodium hydroxide, 1 part of potassium stearate, 3 parts of triethanolamine stearate, 1 part of sodium dodecyl sulfate and 200 parts of water for later use; (2) adding bone glue, sodium hydroxide and triethanolamine stearate into water with the temperature of 68 ℃, grinding and mixing for 2 hours, and uniformly mixing to obtain a mixed solution; (3) and (4) sequentially adding potassium stearate and sodium dodecyl sulfate into the mixed solution obtained in the step S2, preserving heat, stirring and mixing for 20min, and uniformly mixing to obtain the foaming agent.
The invention also provides a preparation method of the rubber-plastic foam material, which comprises the following steps:
s1, weighing the raw materials of the polystyrene-butadiene copolymer, the chloroprene rubber, a vulcanizing agent, a filler, methyl stearate, polyethylene wax, aromatic oil and a foaming agent for later use;
s2, adding the polystyrene-butadiene copolymer, the chloroprene rubber and the aromatic oil into an internal mixer together, controlling the internal mixing temperature at 118 ℃, and mixing and internally mixing for 8min to obtain a mixed rubber material;
and S3, adding the filler, the methyl stearate and the polyethylene wax into an internal mixer together, mixing and stirring for 15min, after fully and uniformly mixing, continuing to heat to 135 ℃, adding a vulcanizing agent and a foaming agent, vulcanizing and foaming for 3min, and then carrying out open milling and granulation to obtain the required rubber and plastic foaming material.
Example two
The invention provides a rubber-plastic foaming material which comprises the following raw materials in parts by weight: 80 parts of polystyrene butadiene copolymer, 35 parts of chloroprene rubber, 8 parts of vulcanizing agent, 30 parts of filler, 2.5 parts of methyl stearate, 5.5 parts of polyethylene wax, 14 parts of aromatic oil and 3.5 parts of foaming agent;
wherein the vulcanizing agent is a compound of sulfur, copper dimethyldithiocarbamate and polyethylene glycol trimethoxysilylpropyl ether in a mass ratio of 6:1.5: 1;
the filler is zinc oxide;
the foaming agent is prepared by the following method: (1) weighing 40 parts by weight of bone glue, 3.5 parts by weight of sodium hydroxide, 2 parts by weight of potassium stearate, 5 parts by weight of triethanolamine stearate, 1.5 parts by weight of sodium dodecyl sulfate and 250 parts by weight of water for later use; (2) adding bone glue, sodium hydroxide and triethanolamine stearate into water of 75 ℃, grinding and mixing for 2.5h, and uniformly mixing to obtain a mixed solution; (3) and (4) sequentially adding potassium stearate and sodium dodecyl sulfate into the mixed solution obtained in the step S2, preserving heat, stirring and mixing for 30min, and uniformly mixing to obtain the foaming agent.
The invention also provides a preparation method of the rubber-plastic foam material, which comprises the following steps:
s1, weighing the raw materials of the polystyrene-butadiene copolymer, the chloroprene rubber, a vulcanizing agent, a filler, methyl stearate, polyethylene wax, aromatic oil and a foaming agent for later use;
s2, adding the polystyrene-butadiene copolymer, the chloroprene rubber and the aromatic oil into an internal mixer together, controlling the internal mixing temperature to be 123 ℃, and mixing and internally mixing for 12min to obtain a mixed rubber material;
and S3, adding the filler, the methyl stearate and the polyethylene wax into an internal mixer together, mixing and stirring for 20min, after fully and uniformly mixing, continuing to heat to 140 ℃, adding a vulcanizing agent and a foaming agent, vulcanizing and foaming for 6min, and then carrying out open milling and granulation to obtain the required rubber and plastic foaming material.
EXAMPLE III
The invention provides a rubber-plastic foaming material which comprises the following raw materials in parts by weight: 90 parts of polystyrene butadiene copolymer, 40 parts of chloroprene rubber, 12 parts of vulcanizing agent, 40 parts of filler, 4 parts of methyl stearate, 8 parts of polyethylene wax, 18 parts of aromatic oil and 5 parts of foaming agent;
wherein the vulcanizing agent is a compound of sulfur, copper dimethyldithiocarbamate and polyethylene glycol trimethoxysilylpropyl ether in a mass ratio of 7:2: 1;
the filler is calcined kaolin;
the foaming agent is prepared by the following method: (1) weighing 50 parts of bone glue, 5 parts of sodium hydroxide, 3 parts of potassium stearate, 8 parts of triethanolamine stearate, 2 parts of sodium dodecyl sulfate and 300 parts of water for later use; (2) adding bone glue, sodium hydroxide and triethanolamine stearate into water of 82 ℃, grinding and mixing for 3 hours, and uniformly mixing to obtain a mixed solution; (3) and (4) sequentially adding potassium stearate and sodium dodecyl sulfate into the mixed solution obtained in the step S2, preserving heat, stirring and mixing for 40min, and uniformly mixing to obtain the foaming agent.
The invention also provides a preparation method of the rubber-plastic foam material, which comprises the following steps:
s1, weighing the raw materials of the polystyrene-butadiene copolymer, the chloroprene rubber, a vulcanizing agent, a filler, methyl stearate, polyethylene wax, aromatic oil and a foaming agent for later use;
s2, adding the polystyrene-butadiene copolymer, the chloroprene rubber and the aromatic oil into an internal mixer together, controlling the internal mixing temperature to be 128 ℃, and mixing and internally mixing for 15min to obtain a mixed rubber material;
and S3, adding the filler, the methyl stearate and the polyethylene wax into an internal mixer together, mixing and stirring for 25min, after fully and uniformly mixing, continuing to heat to 145 ℃, adding a vulcanizing agent and a foaming agent, vulcanizing and foaming for 10min, and then carrying out open milling and granulation to obtain the required rubber and plastic foaming material.
Comparative example 1
The invention provides a rubber-plastic foaming material which comprises the following raw materials in parts by weight: 70 parts of polystyrene butadiene copolymer, 30 parts of chloroprene rubber, 5 parts of vulcanizing agent, 20 parts of filler, 1 part of methyl stearate, 3 parts of polyethylene wax, 10 parts of aromatic oil and 2 parts of foaming agent;
wherein the vulcanizing agent is a compound of sulfur, copper dimethyldithiocarbamate and polyethylene glycol trimethoxysilylpropyl ether in a mass ratio of 5:1: 1;
the filler is silicon dioxide;
the foaming agent is prepared by the following method: (1) weighing 30 parts of bone glue, 2 parts of sodium hydroxide, 3 parts of triethanolamine stearate and 200 parts of water for later use; (2) adding bone glue, sodium hydroxide and triethanolamine stearate into water with the temperature of 68 ℃, grinding and mixing for 2 hours, and uniformly mixing to obtain the foaming agent.
The invention also provides a preparation method of the rubber-plastic foam material, which comprises the following steps:
s1, weighing the raw materials of the polystyrene-butadiene copolymer, the chloroprene rubber, a vulcanizing agent, a filler, methyl stearate, polyethylene wax, aromatic oil and a foaming agent for later use;
s2, adding the polystyrene-butadiene copolymer, the chloroprene rubber and the aromatic oil into an internal mixer together, controlling the internal mixing temperature at 118 ℃, and mixing and internally mixing for 8min to obtain a mixed rubber material;
and S3, adding the filler, the methyl stearate and the polyethylene wax into an internal mixer together, mixing and stirring for 15min, after fully and uniformly mixing, continuing to heat to 135 ℃, adding a vulcanizing agent and a foaming agent, vulcanizing and foaming for 3min, and then carrying out open milling and granulation to obtain the required rubber and plastic foaming material.
Comparative example No. two
The invention provides a rubber-plastic foaming material which comprises the following raw materials in parts by weight: 70 parts of polystyrene butadiene copolymer, 30 parts of chloroprene rubber, 5 parts of vulcanizing agent, 20 parts of filler, 1 part of methyl stearate, 3 parts of polyethylene wax, 10 parts of aromatic oil and 2 parts of foaming agent;
wherein the vulcanizing agent is a compound of sulfur, copper dimethyldithiocarbamate and polyethylene glycol trimethoxysilylpropyl ether in a mass ratio of 5:1: 1;
the filler is silicon dioxide;
the foaming agent is prepared by the following method: (1) weighing 30 parts of bone glue, 2 parts of sodium hydroxide, 1 part of potassium stearate, 3 parts of triethanolamine stearate, 1 part of sodium dodecyl sulfate and 200 parts of water for later use; (2) adding bone glue, sodium hydroxide and triethanolamine stearate into water with the temperature of 68 ℃, grinding and mixing for 2 hours, and uniformly mixing to obtain a mixed solution; (3) and (4) sequentially adding potassium stearate and sodium dodecyl sulfate into the mixed solution obtained in the step S2, preserving heat, stirring and mixing for 20min, and uniformly mixing to obtain the foaming agent.
The invention also provides a preparation method of the rubber-plastic foam material, which comprises the following steps:
s1, weighing the raw materials of the polystyrene-butadiene copolymer, the chloroprene rubber, a vulcanizing agent, a filler, methyl stearate, polyethylene wax, aromatic oil and a foaming agent for later use;
s2, adding the polystyrene-butadiene copolymer, the chloroprene rubber and the aromatic oil into an internal mixer together, controlling the internal mixing temperature at 118 ℃, and mixing and internally mixing for 8min to obtain a mixed rubber material;
and S3, adding the filler, the methyl stearate, the vulcanizing agent and the polyethylene wax into an internal mixer, mixing and stirring for 15min, after fully and uniformly mixing, continuing to heat to 135 ℃, adding the foaming agent, foaming for 3min, mixing, and granulating to obtain the required rubber and plastic foaming material.
The properties of the rubber and plastic foam materials prepared in the first to third examples and the first and second comparative examples were respectively tested, and the following results were obtained:
table 1:
| example one | Example two | EXAMPLE III | Comparative example 1 | Comparative example No. two | |
| Density (g/cm)3) | 0.26 | 0.23 | 0.28 | 0.43 | 0.35 |
| Elongation at Break (%) | 589.5 | 632.1 | 611.7 | 435.5 | 512.7 |
| Rebound resilience (%) | 44.3 | 53.6 | 49.5 | 32.8 | 35.4 |
| Tear Strength (N/mm) | 5.1 | 5.7 | 5.4 | 4.3 | 4.7 |
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (7)
1. The rubber-plastic foam material is characterized by comprising the following raw materials in parts by weight: 70-90 parts of polystyrene butadiene copolymer, 30-40 parts of chloroprene rubber, 5-12 parts of vulcanizing agent, 20-40 parts of filler, 1-4 parts of methyl stearate, 3-8 parts of polyethylene wax, 10-18 parts of aromatic oil and 2-5 parts of foaming agent.
2. The rubber-plastic foam material as claimed in claim 1, which comprises the following raw materials in parts by weight: 75-85 parts of polystyrene butadiene copolymer, 32-38 parts of chloroprene rubber, 6-10 parts of vulcanizing agent, 25-35 parts of filler, 2-3 parts of methyl stearate, 4-7 parts of polyethylene wax, 12-16 parts of aromatic oil and 3-4 parts of foaming agent.
3. The rubber-plastic foam material as claimed in claim 1, which comprises the following raw materials in parts by weight: 80 parts of polystyrene butadiene copolymer, 35 parts of chloroprene rubber, 8 parts of vulcanizing agent, 30 parts of filler, 2.5 parts of methyl stearate, 5.5 parts of polyethylene wax, 14 parts of aromatic oil and 3.5 parts of foaming agent.
4. The rubber-plastic foam material as claimed in claim 1, wherein the vulcanizing agent is a compound of sulfur, copper dimethyldithiocarbamate and polyethylene glycol trimethoxysilylpropyl ether in a mass ratio of 5-7:1-2: 1.
5. The rubber-plastic foam material as claimed in claim 1, wherein the filler is at least one of silica, calcium carbonate, talc, zinc oxide, titanium dioxide or calcined kaolin.
6. The rubber-plastic foam material as claimed in claim 1, wherein the foaming agent is prepared by the following steps: (1) weighing 30-50 parts of bone glue, 2-5 parts of sodium hydroxide, 1-3 parts of potassium stearate, 3-8 parts of triethanolamine stearate, 1-2 parts of sodium dodecyl sulfate and 300 parts of water 200 for later use; (2) adding bone glue, sodium hydroxide and triethanolamine stearate into water of 68-82 deg.C, grinding and mixing for 2-3h, and mixing to obtain mixed solution; (3) and (4) sequentially adding potassium stearate and sodium dodecyl sulfate into the mixed solution obtained in the step S2, preserving heat, stirring and mixing for 20-40min, and uniformly mixing to obtain the foaming agent.
7. A process for the preparation of the rubber-plastic foamed material according to any one of claims 1 to 6, characterized in that it comprises the following steps:
s1, weighing the raw materials of the polystyrene-butadiene copolymer, the chloroprene rubber, a vulcanizing agent, a filler, methyl stearate, polyethylene wax, aromatic oil and a foaming agent for later use;
s2, adding the polystyrene butadiene copolymer, the chloroprene rubber and the aromatic oil into an internal mixer together, controlling the internal mixing temperature at 118-128 ℃, and mixing and internally mixing for 8-15min to obtain a mixed rubber material;
s3, adding the filler, the methyl stearate and the polyethylene wax into an internal mixer together, mixing and stirring for 15-25min, after fully and uniformly mixing, continuing to heat to 145 ℃ for 135 ℃, adding the vulcanizing agent and the foaming agent, vulcanizing and foaming for 3-10min, and then carrying out open milling and granulation to obtain the required rubber and plastic foaming material.
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