CN113754960A - Oil-resistant and anti-aging rubber boot material and preparation method thereof - Google Patents
Oil-resistant and anti-aging rubber boot material and preparation method thereof Download PDFInfo
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- CN113754960A CN113754960A CN202110972275.1A CN202110972275A CN113754960A CN 113754960 A CN113754960 A CN 113754960A CN 202110972275 A CN202110972275 A CN 202110972275A CN 113754960 A CN113754960 A CN 113754960A
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/16—Elastomeric ethene-propene or ethene-propene-diene copolymers, e.g. EPR and EPDM rubbers
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2296—Oxides; Hydroxides of metals of zinc
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/24—Acids; Salts thereof
- C08K3/26—Carbonates; Bicarbonates
- C08K2003/265—Calcium, strontium or barium carbonate
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- C—CHEMISTRY; METALLURGY
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- C—CHEMISTRY; METALLURGY
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Abstract
The invention relates to an oil-resistant and anti-aging rubber boot material and a preparation method thereof. The rubber boot material is mainly prepared from the following raw materials in parts by weight: 70-95 parts of ethylene propylene diene monomer, 5-30 parts of CPE or PE or POM, 30-8 parts of inorganic filler, 50-120 parts of carbon black, 20-60 parts of softener, 4-10 parts of zinc oxide, 1-2 parts of stearic acid, 1-3 parts of anti-aging agent, 2-4 parts of processing aid, 1-3 parts of coupling agent, 3-5 parts of vulcanizing agent and 0.5-2 parts of co-vulcanizing agent. The material of the invention has good aging resistance, high and low temperature resistance, oil resistance, alkali resistance, wear resistance and high material fixed elongation, thereby ensuring that the rubber boot has long service life in the use process, the maximum temperature of the rubber boot material can reach 120 ℃, and the low temperature can reach minus 50 ℃.
Description
Technical Field
The invention relates to the field of rubber, in particular to an oil-resistant and anti-aging rubber boot material and a preparation method thereof.
Background
The problem of making an uproar falls in the track traffic damping receives more and more attention, and effectual damping is fallen and is fallen product and measure, not only can alleviate vehicle equipment, orbital fatigue and wearing and tearing, reduces the maintenance cost, but also can reduce the influence of vibration and noise to resident, building along the line. The elastic supporting block type track mechanism is composed of an elastic supporting block, a track bed plate, a concrete base and a matched fastener, has the advantages of good vibration and noise reduction performance, simple structure, convenient construction, repairability and the like, is an ideal vibration reduction scheme for vibration and noise sensitive areas in urban rail transit, and is characterized in that discrete concrete elastic supporting blocks are laid between a steel rail and the track bed plate, rubber elastic rubber pads are arranged at the bottoms of the concrete supporting blocks, and rubber sleeve boots are arranged around the concrete elastic supporting blocks.
The rubber sleeve shoes are important components of the track structure, can effectively improve the overall elasticity of the track structure, buffer the strong vibration and impact generated when a train passes through, and protect a roadbed and a sleeper. The rigidity and the damping of the rubber sleeve shoe have important influence on the dynamic performance of the elastic supporting block type ballastless track, the too low rigidity of the rubber sleeve shoe can cause the amplitude of the steel rail and the supporting block to be increased sharply, so that the concrete supporting block is loosened, the service life of the track is shortened, and the too high rigidity deteriorates the vibration and noise reduction effect of the track structure, so that the rubber sleeve shoe material is required to have proper hardness, high stretching strength and high damping, and meanwhile, the rubber sleeve shoe is required to be used in the atmosphere for a long time, so that the product is required to have excellent performances such as weather aging resistance, cold resistance, oil resistance, wear resistance, bearing capacity and the like.
According to the use requirements of rubber boots, the material of the rubber boots requires high tensile strength, high damping, excellent weather aging resistance, cold resistance, oil resistance, wear resistance, high bearing capacity and other performances, the original boot material cannot meet all the performance requirements, and particularly the oil resistance and the aging resistance of the material are ensured at the same time, so the oil resistance and the aging resistance of the rubber boot material must be invented.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides an oil-resistant and anti-aging rubber boot material and a preparation method thereof.
Aiming at the technical problems, the technical scheme provided by the invention is as follows:
an oil-resistant and anti-aging rubber boot material is mainly prepared from the following raw materials in parts by weight:
70-95 parts of ethylene propylene diene monomer, 5-30 parts of CPE (chlorinated polyethylene) or PE (polyethylene) or POM (polyoxymethylene);
30-80 parts of an inorganic reinforcing filler; preferably, 50-70 parts of inorganic filler;
50-120 parts of carbon black; preferably, 80-110 parts of carbon black;
20-60 parts of a softener; preferably, 30-50 parts of a softening agent;
4-10 parts of zinc oxide; 1-2 parts of stearic acid;
l-3 parts of an anti-aging agent;
2-4 parts of processing aid and l-3 parts of coupling agent;
3-5 parts of vulcanizing agent and 0.5-2 parts of co-vulcanizing agent.
Preferably, the oil-resistant and anti-aging rubber boot material is prepared from ethylene propylene diene monomer with the content of a third monomer of 4-6, the content of ethylene of 50-70% and the Mooney viscosity ML (1+4) at 125 ℃ of 60-100; the plastic is selected from one of CPE, PE and POM.
Preferably, the inorganic reinforcing filler is one or more selected from modified pottery clay, modified kaolin, modified calcium carbonate and modified talcum powder; the coupling agent is selected from one of vinyl silane coupling agent, chloro-hydrocarbon silane coupling agent, amino-hydrocarbon silane coupling agent, epoxy-hydrocarbon silane coupling agent, methacryloxy-siloxane silane coupling agent and sulfur-containing hydrocarbon silane coupling agent;
the oil-resistant and anti-aging rubber boot material comprises one or more of N300 series, N500 series, N600 series, N700 series, natural gas semi-reinforcing carbon black, natural gas tank method carbon black and gas-mixing carbon black; preferably, the carbon black comprises one or more of N330, N550, N660 and N774.
Preferably, the anti-aging agent is mainly 2-mercaptobenzimidazole and 2, 2, 4-trimethyl-l, 2-dihydroquinoline polymer.
Preferably, the active agents are zinc oxide and stearic acid; wherein the activator comprises 4-10 parts of zinc oxide and 2 parts of stearic acid.
Preferably, the softening agent is one or more of paraffin oil, ester plasticizer and naphthenic oil.
The oil-resistant and anti-aging rubber boot material comprises a vulcanizing agent selected from a small amount of sulfur and one of hydroperoxide ROOH, dialkyl peroxide ROOR ', diacyl peroxide RCOOCR', peroxy ester RCOOOR ', peroxycarbonate ROOOCOR' and ketone peroxide R2C(OOH)2Wherein R and R' are the same or different and are independently selected from C1-C20An alkyl group, optionally substituted with one or more of the following groups: H. halogen, CN, OH, NO2Amino group, C6-C20Aryl radical, C6-C20Heteroaryl, wherein the heteroatom is selected from N, O, S.The co-vulcanizing agent is selected from one of methacrylate, bismaleimide and polybutadiene resin. The preferable vulcanizing agents are 0.1-0.5 part of sulfur and 3-5 parts of dicumyl peroxide; the co-vulcanizing agent is trimethylolpropane triacrylate.
The oil-resistant and anti-aging rubber boot material is characterized in that the processing aid is one selected from hydrocarbons, fatty acid derivatives, synthetic resins and polymers; preferably, the processing aid is one of fatty acid esters, fatty acid amides, fatty acid salts and fatty alcohols.
As a general inventive concept, the invention also provides a preparation method of the oil-resistant and anti-aging rubber boot material and the product, which comprises the following steps:
firstly, mixing ethylene propylene diene monomer rubber and CPE or PE or POM to prepare rubber-plastic blended master batch;
mixing the rubber-plastic blended master batch, zinc oxide, stearic acid, an anti-aging agent and a processing aid together;
adding carbon black, a softening agent, an inorganic filler and a coupling agent into the mixture to be mixed, and then discharging and cooling the mixture to obtain a section of rubber compound;
mixing the first-stage rubber compound with a vulcanizing agent and an auxiliary vulcanizing agent, and performing thin passing or/and triangular wrapping and sheet discharging on the mixed rubber compound to obtain a second-stage rubber compound;
and (5) standing the two-stage rubber compound, extruding and vulcanizing to obtain the oil-resistant and anti-aging rubber boot material.
In the preparation method, preferably, after adding CPE or PE or POM during the mixing process in step (1), mixing to 150 ℃ for rubber discharge to obtain a master batch;
in the above production method, preferably, the step (2) is performed for l to 3 minutes; in the step (3), when the temperature of the rubber material reaches 145 ℃, continuing to mix for 2-4 minutes, and when the temperature of the rubber material reaches 160 ℃ in the mixing process, stopping mixing and discharging the rubber; the temperature for cooling the sizing material is below 50 ℃.
In the preparation method, preferably, in the step (4), when the temperature of the rubber material in the mixing process reaches above 100 ℃, the mixing is stopped and the rubber material is discharged; the number of thin passing is 3-5, and the number of triangular packaging is 5-8.
In the preparation method, preferably, in the step (5), the standing time of the rubber compound after the two-stage mixing is not less than 16 hours; and extruding and preforming the two-stage rubber compound to prepare a semi-finished product with certain width, length, thickness and weight, and vulcanizing the semi-finished product by adopting a mould pressing mode, wherein the vulcanizing temperature is 165-180 ℃, and the vulcanizing time is 6-15 minutes.
The Ethylene Propylene Diene Monomer (EPDM) with high ethylene content, high Mooney viscosity and excellent aging resistance is adopted, and is blended with plastics, carbon black and the like according to a certain mass ratio, so that the oil resistance and the tear resistance of the material can be improved, the bearing capacity of the product can be improved, and meanwhile, the material has good fluidity at high temperature, better process performance during product production, high product qualification rate and low production energy consumption. The product has excellent comprehensive physical properties and longer service life.
The invention can improve the aging resistance of the material at high temperature through high-temperature mixing under the synergistic cooperation of different types of anti-aging agents, and maintain the excellent physical and mechanical properties of the material at high temperature.
The invention uses the inorganic reinforcing filler to react with the coupling agent at high temperature, improves the combination effect of the ethylene propylene diene monomer and the inorganic reinforcing filler, improves the tensile property and the wear resistance of the material in use, and reduces the compression permanent deformation of the material in use.
The vulcanizing agent used in the invention is prepared by using a small amount of sulfur, dicumyl peroxide and trimethylolpropane triacrylate together, so that the material can be ensured to have higher crosslinking density, low compression set and improved oil resistance, and can also be ensured to have certain elongation and tear resistance.
Compared with the prior art, the invention has the advantages that: the rubber material can simultaneously ensure excellent oil resistance and aging resistance, so that the ethylene propylene diene monomer rubber with good aging resistance achieves certain oil resistance; meanwhile, the product has good production process performance, high product qualification rate and low production energy consumption.
(1) The oil-resistant and aging-resistant rubber boot material has the following advantages:
the material has excellent aging resistance;
② the material is excellent in low temperature resistance
The material has oil resistance;
the material has high stretching strength and good bearing capacity;
the wear resistance of the material is good;
the material has better process performance;
(2) the preparation method prepares the oil-resistant and anti-aging rubber boot rubber compound by a multiple-mixing mode, firstly, EPDM raw rubber and plastic are uniformly mixed to prepare rubber-plastic blended master batch, so that the plastic components are uniformly dispersed in the rubber, then, the master batch, zinc oxide, stearic acid, an anti-aging agent and a processing aid are mixed together, then, a reinforcing filler, a coupling agent, a softening agent and carbon black with larger dosage are added and uniformly mixed, then, high-temperature treatment is carried out, the surface active group of the reinforcing filler interacts with a rubber molecular chain, so that the compatibility of the filler and a rubber matrix is better, better tensile strength, compression permanent deformation and wear resistance are obtained, and then, a vulcanizing agent and a co-vulcanizing agent are added at low temperature, so that longer scorching time can be obtained; and finally, extruding and preforming the two-stage rubber compound, and vulcanizing for 6-15 min at the vulcanization temperature of 165-180 ℃ by using a mold of the rubber boot to obtain the rubber boot with excellent performance. The preparation method further ensures that the rubber boot material has good tensile strength, compression set property, wear resistance and oil resistance, the highest temperature of the rubber boot material can reach 120 ℃, and the low temperature can reach minus 50 ℃, so that the rubber boot has excellent aging resistance, oil resistance, alkali resistance and high bearing performance.
(3) The oil-resistant and anti-aging rubber sleeve boot can meet the standard requirements of the railway industry, and can be used for preparing rubber sleeve boots for various rail transit.
Detailed Description
In order to facilitate an understanding of the present invention, the present invention will be described more fully and in detail with reference to the preferred embodiments, but the scope of the present invention is not limited to the specific embodiments described below.
Unless otherwise defined, all terms of art used hereinafter have the same meaning as commonly understood by one of ordinary skill in the art. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the scope of the present invention.
Unless otherwise specified, the reagents and materials used in the present invention are commercially available products or products obtained by a known method.
Example 1
The rubber composition comprises raw materials of 3092PM 90 parts, 10 parts of POM, 5 parts of zinc oxide, l parts of stearic acid, 2122 parts of a processing aid WB, 1 part of an anti-aging agent MB, 5602 parts of a coupling agent KH, 33050 parts of carbon black N, 55030 parts of carbon black N, 40 parts of modified pottery clay, 30 parts of paraffin oil, 4 parts of a vulcanizing agent DCP, 0.3 part of sulfur and 0.5 part of a co-vulcanizing agent PDM.
The oil-resistant and anti-aging rubber boot compound of the embodiment is mainly prepared from the raw materials in the embodiment 1.
The preparation method of the oil-resistant and anti-aging rubber boot rubber compound comprises the following steps:
step (1) adding the ethylene propylene diene monomer 3092PM and the POM into an internal mixer for mixing according to the weight of the raw materials in the embodiment 1, discharging rubber after the temperature reaches 150 ℃, preparing rubber-plastic mixing master batch, and cooling the master batch to 50 ℃;
and (2) adding rubber and plastic mixing master batch, zinc oxide, stearic acid, a coupling agent, an anti-aging agent and a processing aid into the internal mixer for mixing for 2 min.
Adding carbon black, modified pottery clay and paraffin oil into the internal mixer for mixing, continuing mixing for 2 minutes when the temperature of the rubber material reaches 145 ℃, and stopping mixing and discharging when the temperature of the rubber material reaches 160 ℃ in the mixing process; the temperature for cooling the rubber material is below 50 ℃ to obtain a first-stage rubber compound.
Cooling the first-stage rubber compound to below 50 ℃, adding the first-stage rubber compound, sulfur serving as a vulcanizing agent, DCP and PDM serving as an auxiliary vulcanizing agent into the internal mixer again for mixing, and discharging rubber when the temperature of the rubber compound reaches above 100 ℃; thinly passing through an open mill for 3 times, and then packaging in a triangular bag for 5 times to obtain a two-stage rubber compound;
standing the secondary rubber compound for 16 hours for vulcanization treatment; the vulcanization mode is mould pressing, a mould of the rubber boot is used, the vulcanization temperature is 170 ℃, and the vulcanization time is 10 minutes, so that the oil-resistant and anti-aging rubber boot is obtained.
The oil-resistant and anti-aging rubber boot material prepared by the embodiment has excellent physical and mechanical properties, good oil resistance and anti-aging properties and high bearing capacity. The material can ensure excellent oil resistance and aging resistance, and simultaneously can ensure good production process performance of products, high product qualification rate and low production energy consumption.
Example 2
3080J 90 parts of raw material ethylene propylene diene monomer, 10 parts of LDPE, 5 parts of zinc oxide, 1 part of stearic acid, 2122 parts of processing aid WB, 1 part of anti-aging agent MB, 5602 parts of coupling agent KH, 33050 parts of carbon black N, 55045 parts of carbon black, 40 parts of modified pottery clay, 30 parts of paraffin oil, 4 parts of vulcanizing agent DCP, 0.3 part of sulfur and 0.5 part of co-vulcanizing agent TMATMP;
the oil-resistant and anti-aging rubber boot rubber compound of the embodiment is mainly prepared from the raw materials in the embodiment 2.
The preparation method of the oil-resistant and anti-aging rubber boot rubber compound comprises the following steps:
(1) according to the weight of the raw materials in the embodiment 2, the ethylene propylene diene monomer 3080J and the LDPE are added into an internal mixer for mixing, the rubber is discharged after the temperature reaches 150 ℃, the rubber-plastic mixed master batch is prepared, and the master batch is cooled to 50 ℃;
(2) and adding rubber and plastic mixing master batch, zinc oxide, stearic acid, a coupling agent, an anti-aging agent and a processing aid into the internal mixer for mixing for 2 min.
(3) Adding carbon black, modified pottery clay and paraffin oil into the internal mixer for mixing, continuing mixing for 3 minutes when the temperature of the rubber material reaches 145 ℃, and stopping mixing and discharging when the temperature of the rubber material reaches 160 ℃ in the mixing process; the temperature for cooling the rubber material is below 50 ℃ to obtain a first-stage rubber compound.
(4) Cooling the first-stage rubber compound to below 50 ℃, adding the first-stage rubber compound, sulfur serving as a vulcanizing agent, DCP and TMATMP serving as a co-vulcanizing agent into an internal mixer again for mixing, and discharging rubber when the temperature of the rubber compound reaches above 100 ℃; thinly passing through an open mill for 5 times, and then packaging in a triangular bag for 5 times to obtain a two-stage rubber compound;
standing the secondary rubber compound for 16 hours for vulcanization treatment; the vulcanization mode is mould pressing, a mould of the rubber boot is used, the vulcanization temperature is 170 ℃, and the vulcanization time is 12 minutes, so that the oil-resistant and anti-aging rubber boot is obtained.
The oil-resistant and anti-aging rubber boot material prepared by the embodiment has excellent physical and mechanical properties, good oil resistance and anti-aging properties and high bearing capacity.
Example 3
Raw materials of 3092PM 80 parts of ethylene propylene diene monomer, 20 parts of POM, 5 parts of zinc oxide, 1 part of stearic acid, 2122 parts of processing aid WB, 1 part of anti-aging agent MB, 5602 parts of coupling agent KH, 33045 parts of carbon black N, 55040 parts of carbon black N, 40 parts of modified pottery clay, 35 parts of paraffin oil, 4 parts of vulcanizing agent DCP, 0.3 part of sulfur and 0.5 part of co-vulcanizing agent PDM;
the oil-resistant and anti-aging rubber boot rubber compound of the embodiment is mainly prepared from the raw materials in the embodiment 3.
The preparation method of the oil-resistant and anti-aging rubber boot compound of the embodiment is the same as that of embodiment 1.
The oil-resistant and anti-aging rubber boot material prepared by the embodiment has excellent physical and mechanical properties, and the oil resistance is more excellent under the condition that other physical properties meet the requirements.
Comparative example 1:
100 parts of raw material Ethylene Propylene Diene Monomer (EPDM) 3092PM, 5 parts of zinc oxide, 1 part of stearic acid, 1 part of processing aid WB 2122, 1 part of anti-aging agent MB, 5602 parts of coupling agent KH, 50 parts of carbon black N33050, 60 parts of carbon black N55060, 40 parts of modified pottery clay, 30 parts of paraffin oil, 4 parts of vulcanizing agent DCP, 0.3 part of sulfur and 0.5 part of co-vulcanizing agent PDM;
the preparation method is the same as the steps (2) to (5) in example 1.
POM was not used in the raw materials, the carbon black content was N55060 parts, and the other raw materials and contents were the same as in example 1.
Comparative example 2:
preparing raw materials: 100 parts of ethylene propylene diene monomer 4045M, 10 parts of POM, 5 parts of zinc oxide, 1 part of stearic acid, 2122 parts of processing aid WB, 1 part of anti-aging agent MB, 5602 parts of coupling agent KH, 33050 parts of carbon black N, 55045 parts of carbon black, 40 parts of modified pottery clay, 30 parts of paraffin oil, 4 parts of vulcanizing agent DCP, 0.3 part of sulfur and 0.5 part of co-vulcanizing agent PDM;
the preparation method is the same as example 1.
The raw material used was ethylene propylene diene monomer 4045M, and the other raw materials and contents were the same as in example 1.
Comparative example 3:
raw materials of 3092PM 50 parts, 50 parts of POM, 5 parts of zinc oxide, 1 part of stearic acid, 2122 parts of a processing aid WB, 1 part of an anti-aging agent MB, 5602 parts of a coupling agent KH, 33045 parts of carbon black N, 55040 parts of carbon black N, 40 parts of modified pottery clay, 35 parts of paraffin oil, 4 parts of a vulcanizing agent DCP, 0.3 part of sulfur and 0.5 part of a co-vulcanizing agent PDM;
the preparation method is the same as example 1.
The raw materials comprise 3092PM 50 parts and POM 50 parts, and the other raw materials and the content are the same as those in the example 3.
The data on the performances of the above examples 1 to 3 of the present invention and comparative examples 1 to 3 are shown in Table 1.
TABLE 1 results of physical Properties
As can be seen from Table 1, the rubber boot material of the invention adopts the technical means of ethylene propylene diene monomer with high ethylene content, high Mooney viscosity and excellent aging resistance, the addition of plastic components, the proportion among the components of the ethylene propylene diene monomer, the plastic, the carbon black and the like, so that the obtained rubber composition has excellent mechanical property, wear resistance and oil resistance, compared with the comparative examples 1-3, the rubber boot material has obvious advantages in the aspects of tensile strength, stress at definite elongation, oil resistance, wear resistance and pressure change property, and the rubber boot material also keeps the superiority of other properties while the oil resistance is obviously improved. The rubber boot material has long service life in special environment, high bearing capacity and strong environmental tolerance.
Claims (11)
1. An oil-resistant and anti-aging rubber boot material is characterized by mainly comprising the following raw materials in parts by weight:
70-95 parts of ethylene propylene diene monomer;
5-30 parts of CPE or PE or POM;
30-80 parts of inorganic reinforcing filler;
50-120 parts of carbon black;
20-60 parts of a softening agent;
4-10 parts of zinc oxide;
1-2 parts of stearic acid;
1-3 parts of an anti-aging agent;
1-3 parts of a coupling agent;
2-4 parts of a processing aid;
3-5 parts of vulcanizing agent and 0.5-2 parts of co-vulcanizing agent.
2. The oil-resistant and anti-aging rubber boot material as claimed in claim 1, wherein the ethylene propylene diene monomer is selected from rubbers which simultaneously meet the following standards: 4-6 parts of a third monomer, 50-70% of ethylene and 60-100% of Mooney viscosity ML (1+4) at 125 ℃.
3. The oil-resistant and anti-aging rubber boot material as claimed in claim 1, wherein the ethylene propylene diene monomer is 3092PM ethylene propylene diene monomer.
4. The oil-resistant and anti-aging rubber boot material as claimed in claim 1, wherein the inorganic reinforcing filler is one or more selected from modified clay, modified kaolin, modified calcium carbonate and modified talc;
the coupling agent is selected from one of vinyl silane coupling agent, chloro-hydrocarbyl silane coupling agent, amino-hydrocarbyl silane coupling agent, epoxy-hydrocarbyl silane coupling agent, methacryloxy-siloxane silane coupling agent and sulfur-containing hydrocarbyl silane coupling agent;
the carbon black is selected from one or more of N300 series, N500 series, N600 series, N700 series, natural gas semi-reinforcing carbon black, natural gas channel carbon black and gas-mixing carbon black.
5. The oil-resistant and anti-aging rubber boot material as claimed in claim 4, wherein the carbon black is one or more selected from N330, N550, N660 and N774.
6. The oil-resistant and anti-aging rubber boot material as claimed in claim 1, wherein the amount of the inorganic filler is 50 to 70 parts, the amount of the carbon black is 80 to 110 parts, and the amount of the softener is 30 to 50 parts.
7. The oil-resistant, anti-aging rubber boot material according to claim 1, wherein the anti-aging agent is 2-mercaptobenzimidazole and 2, 2, 4-trimethyl-1, 2-dihydroquinoline polymer;
the softening agent is selected from one or more of paraffin oil, ester plasticizer and naphthenic oil;
the vulcanizing agent is selected from a small amount of sulfur and one of hydroperoxide ROOH, dialkyl peroxide ROOR ', diacyl peroxide RCOOCR', peroxy ester RCOOOR ', peroxycarbonate ROOOOCOR' and ketone peroxide R2C(OOH)2Wherein R and R' are the same or different and are independently selected from C1-C20An alkyl group, optionally substituted with one or more of the following groups: H. halogen, CN, OH, NO2Amino group, C6-C20Aryl radical, C6-C20Heteroaryl, wherein the heteroatom is selected from N, O, S;
the co-vulcanizing agent is selected from one of methacrylate, bismaleimide and polybutadiene resin;
the processing aid is selected from one of hydrocarbons, fatty acid derivatives, synthetic resins and polymers.
8. The oil-resistant and anti-aging rubber boot material as claimed in claim 7, wherein the vulcanizing agents are 0.1-0.5 parts of sulfur and 3-5 parts of dicumyl peroxide;
the co-vulcanizing agent is trimethylolpropane triacrylate;
the processing aid is selected from one of fatty acid esters, fatty acid amides, fatty acid salts and fatty alcohol.
9. A preparation method for preparing the oil-resistant and anti-aging rubber boot material as claimed in any one of claims 1 to 8, which is characterized by comprising the following steps:
firstly, mixing ethylene propylene diene monomer rubber and CPE or PE or POM to prepare rubber-plastic blended master batch;
mixing the rubber-plastic blended master batch, zinc oxide, stearic acid, an anti-aging agent and a processing aid together;
adding carbon black, a softening agent, an inorganic filler and a coupling agent into the mixture to be mixed, and then discharging and cooling the mixture to obtain a section of rubber compound;
mixing the first-stage rubber compound with a vulcanizing agent and an auxiliary vulcanizing agent, and performing thin passing or/and triangular wrapping and sheet discharging on the mixed rubber compound to obtain a second-stage rubber compound;
and (5) standing the two-stage rubber compound, extruding and vulcanizing to obtain the oil-resistant and anti-aging rubber boot material.
10. The method for preparing the oil-resistant and anti-aging rubber boot material as claimed in claim 9, wherein CPE, PE or POM is added in the mixing process in the step (1), and then the mixture is mixed to 150 ℃ for rubber discharge to obtain a master batch;
the step (2) is to mix for 1 to 3 minutes; in the step (3), when the temperature of the rubber material reaches 145 ℃, continuing to mix for 2-4 minutes, and when the temperature of the rubber material reaches 160 ℃ in the mixing process, stopping mixing and discharging the rubber; the cooling temperature of the sizing material is below 50 ℃;
in the step (4), when the temperature of the rubber material reaches more than 100 ℃ in the mixing process, stopping mixing and discharging the rubber; the number of thin passing is 3-5, and the number of triangular packaging is 5-8;
in the step (5), the standing time of the rubber material after the two-stage mixing is not less than 16 hours; and extruding and preforming the two-stage rubber compound to prepare a semi-finished product with certain width, length, thickness and weight, and vulcanizing the semi-finished product by adopting a mould pressing mode, wherein the vulcanizing temperature is 165-180 ℃, and the vulcanizing time is 6-15 minutes.
11. An oil-resistant and anti-aging rubber boot, which is characterized by being prepared from the oil-resistant and anti-aging rubber boot material according to any one of claims 1 to 8 or prepared by the preparation method of the oil-resistant and anti-aging rubber boot material according to any one of claims 9 to 10.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110972275.1A CN113754960B (en) | 2021-08-23 | 2021-08-23 | Oil-resistant and anti-aging rubber boot material and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202110972275.1A CN113754960B (en) | 2021-08-23 | 2021-08-23 | Oil-resistant and anti-aging rubber boot material and preparation method thereof |
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