CN112266509B - Sidewall rubber taking synthetic rubber as base rubber and preparation method and application thereof - Google Patents

Sidewall rubber taking synthetic rubber as base rubber and preparation method and application thereof Download PDF

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CN112266509B
CN112266509B CN202011185196.8A CN202011185196A CN112266509B CN 112266509 B CN112266509 B CN 112266509B CN 202011185196 A CN202011185196 A CN 202011185196A CN 112266509 B CN112266509 B CN 112266509B
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rubber
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synthetic
sidewall
molecular weight
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CN112266509A (en
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杨小牛
王晓建
郑书轶
陈兆彬
孙洪国
尹园
郇彦
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Changchun Institute of Applied Chemistry of CAS
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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
    • C08L9/00—Compositions of homopolymers or copolymers of conjugated diene hydrocarbons
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
    • B60C1/00—Tyres characterised by the chemical composition or the physical arrangement or mixture of the composition
    • B60C1/0025—Compositions of the sidewalls
    • 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
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2201/00—Properties
    • C08L2201/08—Stabilised against heat, light or radiation or oxydation
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00—Polymer mixtures characterised by other features
    • C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
    • C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00—Polymer mixtures characterised by other features
    • C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
    • C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend

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  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Tires In General (AREA)

Abstract

The invention relates to a sidewall rubber taking synthetic rubber as a base rubber, a preparation method and application thereof, belonging to the technical field of sidewall rubber. The technical problem of poor stability of the sidewall rubber taking natural rubber as the base rubber in the prior art is solved. The sidewall rubber comprises the following components in parts by weight: 20-60 parts of synthetic butadiene rubber, 40-70 parts of synthetic cis-isoprene rubber, 0-15 parts of synthetic trans-isoprene rubber, 0-15 parts of synthetic ethylene propylene diene monomer, 20-50 parts of carbon black, 0-30 parts of white carbon black, 0.1-2 parts of coupling agent, 3-5 parts of zinc oxide, 1-3 parts of stearic acid, 2-16 parts of protective agent, 0.4-2 parts of sulfur, 0.4-2 parts of accelerator and 2-10 parts of plasticizer. The sidewall rubber takes fully synthetic rubber as base rubber, and the matching performance of the auxiliary agent and the process is equal to or superior to that of the sidewall rubber prepared by natural rubber.

Description

Sidewall rubber taking synthetic rubber as base rubber and preparation method and application thereof
Technical Field
The invention belongs to the technical field of sidewall rubber, and particularly relates to sidewall rubber taking synthetic rubber as base rubber, and a preparation method and application thereof.
Background
Tires are ground-rolling annular elastic rubber articles fitted on various vehicles, airplanes, or machines. Generally, the wheel is mounted on a metal rim, and can support a vehicle body or a machine body, buffer external impact, realize contact with a road surface and ensure driving performance. In the case of vehicles, tires have a direct and important influence on vehicle handling performance, driving safety, fuel consumption, ride comfort, and the like. In the case of aircraft, tires play an important safety role, and the performance of the tires is directly related to the safety of the takeoff and landing stage.
The sidewall part of the aircraft tire is subjected to a high-frequency large-deformation service environment in which ozone and high and low temperatures are crossed and rapidly changed. Besides the basic excellent flex cracking resistance, the rubber tire also has the capability of resisting the sharp temperature rise transmitted by the friction of a tire crown part when an airplane lands, and has certain static electricity conducting capability. When the tire tread is used for many times, the tire side needs to be subjected to high temperature and high pressure again and many times during the attaching and vulcanizing of the retreaded tire tread, and in addition, when foreign matters exist in a runway, the tire side rubber also needs to have enough cutting resistance to protect a tire body from being scratched by the foreign matters to cause tire burst accidents.
In the prior art, the sidewall rubber system of the aircraft tire is a system combining natural rubber and other rubbers. For example, the Chinese patent is a high-flex fatigue life aviation sidewall rubber, a preparation method and application thereof (publication No. 109942910A), and the patent uses natural rubber, cis-butadiene rubber and trans-1, 4-butadiene-isoprene copolymer rubber together to prepare the sidewall rubber with good fatigue resistance and aging resistance. For example, a dynamic ozone aging resistant tire sidewall rubber and a preparation method thereof (publication No. 109810300A) in Chinese patent, the patent uses natural rubber, butadiene rubber and styrene butadiene rubber together to prepare the ozone aging resistant tire sidewall rubber. For another example, Chinese patent Nos. 108239306A, 108178846A and 104844850A, and natural rubber and butadiene rubber are used to prepare high-performance sidewall rubber.
The natural rubber is mainly prepared by the processing procedures of coagulating, drying and the like of natural latex collected from a rubber tree. Due to the influence of various factors such as regions, growth environment air temperature and humidity and the like, the percentage content of components in latex produced every year can be changed, the product quality of each region is easy to be uneven, the rubber stability cannot be guaranteed, and the application of the rubber in the field of aviation tires with high reliability requirements is limited.
Disclosure of Invention
The invention provides a sidewall rubber taking synthetic rubber as a base rubber, a preparation method and application thereof, aiming at solving the technical problem of poor stability of the sidewall rubber taking natural rubber as the base rubber in the prior art.
The technical scheme adopted by the invention for realizing the aim is as follows.
A sidewall rubber of an elastomer-based rubber comprising:
Figure BDA0002751223410000021
preferably, the synthetic cis-isoprene rubber has a number average molecular weight Mn15-40 ten thousand, cis 1,4 content not less than 95%, and molecular weight distribution of 1.0-2.8.
Preferably, the number average molecular weight M of the synthetic butadiene rubbern10-35 ten thousand, the cis-1, 4 content is more than or equal to 96 percent, and the molecular weight distribution is 1.0-3.
Preferably, the synthetic trans-isoprene rubber has a weight average molecular weight MW15-32 ten thousand, the content of trans-1, 4 is more than or equal to 98 percent, and the molecular weight distribution is 1.0-2.6.
Preferably, the content of propylene in the synthetic ethylene propylene diene monomer is 25wt% to 50 wt%.
Preferably, the carbon black has a compressed DBP value of 62 to 106 (cm)3100g), the heating loss at 180 ℃ is less than or equal to 3.0.
Preferably, the primary particle size of the white carbon black is less than or equal to 30nm, and the DBP absorption value is 180-400m3/g。
Preferably, the coupling agent is a silane coupling agent or a titanate coupling agent; more preferably, the silane coupling agent is Si69, KH570 or KH550 and the titanate coupling agent is TMC-931 or TMC-27.
Preferably, the protective agent is a mixture of two or more of RD, 4020, BLE, 2-mercaptobenzimidazole, paraffin, CTP, styrenated phenol, sodium dithiosulfate compound and N, N '-phenylene bismaleimide, the addition amounts of RD, 4020, BLE, 2-mercaptobenzimidazole, paraffin, styrenated phenol, sodium dithiosulfate compound and N, N' -phenylene bismaleimide are respectively 0-2 parts by weight, and the addition amount of CTP is 0-1 part by weight.
Preferably, the accelerator is a mixture of one or more of DM, MDB, NS, CZ, D, DTDM, TMTD.
Preferably, the plasticizer is a weight average molecular weight MWIs 1 to 5 ten thousand Liquid Butadiene Rubber (LBR) or weight average molecular weight MWIs 1-5 ten thousand Liquid Isoprene Rubber (LIR).
The invention also provides a preparation method of the sidewall rubber taking the synthetic rubber as the base rubber, which comprises the following steps:
step one, weighing each component according to a ratio;
step two, putting the synthetic cis-butadiene rubber, the synthetic cis-isoprene rubber, the synthetic trans-isoprene rubber and the synthetic ethylene propylene diene monomer rubber into an internal mixer, and internally mixing for 1-3 min;
step three, putting the protective agent, stearic acid, carbon black, white carbon black and a coupling agent into an internal mixer, and internally mixing for 2-8 min;
step four, putting zinc oxide and a plasticizer into an internal mixer, carrying out internal mixing for 1-4min, discharging rubber at the temperature of 100-140 ℃, and standing the rubber sheet in the environment of 20-50 ℃ for 1-6h to obtain rubber compound;
and step five, open milling the rubber compound on an open mill, wherein the roll temperature is 60-90 ℃, adding an accelerator and sulfur, uniformly mixing, and standing at room temperature for more than 12 hours to obtain the sidewall rubber taking the synthetic rubber as the base rubber.
Preferably, the internal mixer has an internal mixing temperature of 60-80 ℃ and a rotation speed of 20-70 rpm.
The invention also provides application of the sidewall rubber taking the synthetic rubber as the base rubber as sidewall rubber of an aviation tire.
Compared with the prior art, the invention has the beneficial effects that:
the invention provides a sidewall rubber for a tire, which takes fully synthetic rubber as a base rubber,according to the characteristics of the aviation tire side wall such as high-frequency and high-deformation use state, high ozone, strong ultraviolet, high and low temperature rapid alternating operation environment and the like, the performance of the obtained sidewall rubber is equal to or superior to that of sidewall rubber prepared from natural rubber through the cooperation of the auxiliary agent and the process. The Mooney viscosity (ML) of the rubber compound is detected by tests1+4) 40-90, the elongation at break of 134-155 ℃ vulcanization for 0.5-1h is more than 450%; the 300 percent stress at definite elongation is more than 8MPa, and the frequency of triggering the flexing-resistant crack of 0.5 to 1 hour of vulcanization at the temperature of 134 ℃ and 155 ℃ is more than 20 ten thousand times; the number of 6-grade cracks is more than 10 ten thousand after the hot air aging is carried out for 4 to 10 hours at the temperature of 150 ℃; in the environment with 1-5ppm ozone concentration, no ozone crack appears in vulcanized rubber within 2 h; placing in an outdoor environment with the temperature of-15-10 ℃, 5-23 ℃ and 15-37 ℃ for 100 and 200 days, wherein the elongation at break is not less than 390 percent.
Detailed Description
For a further understanding of the invention, preferred embodiments of the invention are described below in conjunction with the detailed description, but it is to be understood that the description is intended to further illustrate the features and advantages of the invention and not to limit the claims to the invention.
The sidewall rubber based on synthetic rubber of the invention comprises: 20-60 parts of synthetic Butadiene Rubber (BR), 40-70 parts of synthetic cis-Isoprene Rubber (IR), 0-15 parts of synthetic trans-isoprene rubber (TPI), 0-15 parts of synthetic Ethylene Propylene Diene Monomer (EPDM), 20-50 parts of carbon black, 0-30 parts of white carbon black, 0.1-2 parts of coupling agent, 3-5 parts of zinc oxide, 1-3 parts of stearic acid, 2-16 parts of protective agent, 0.4-2 parts of sulfur, 0.4-2 parts of accelerator and 2-10 parts of plasticizer. It may consist of only the above-mentioned components.
In the above technical scheme, the number average molecular weight M of the synthesized cis-isoprene rubbern15-40 ten thousand, cis 1,4 content not less than 95%, and molecular weight distribution of 1.0-2.8. The synthetic cis-isoprene rubber is preferably used in an amount of 40 to 65 parts by weight.
In the above technical scheme, the number average molecular weight M of the synthesized butadiene rubbern10-35 ten thousand, the cis-1, 4 content is more than or equal to 96 percent, and the molecular weight distribution is 1.0-3. The amount of the synthetic cis-butadiene rubber is preferably 25-55 parts by weight.
In the technical scheme, the weight average molecular weight M of the synthesized trans-isoprene rubberW15-32 ten thousand, the content of trans-1, 4 is more than or equal to 98 percent, and the molecular weight distribution is 1.0-2.6. The amount of the synthetic trans-isoprene rubber is preferably 5 to 10 parts by weight.
In the technical scheme, the content of propylene in the synthesized ethylene propylene diene monomer is 25wt% -50 wt%. The amount of the synthetic ethylene propylene diene monomer is preferably 10 to 15 parts by weight.
In the above technical scheme, the compression DBP value of the carbon black is 62-106 (cm)3100g), the heating loss at 180 ℃ is less than or equal to 3.0. The amount of carbon black used is preferably 40 to 50 parts by weight.
In the above technical scheme, the primary particle size of white carbon black is less than or equal to 30nm, and the DBP absorption value is 180-3(ii) in terms of/g. The amount of white carbon black is preferably 4 to 10 parts by weight.
In the technical scheme, the coupling agent is a silane coupling agent or a titanate coupling agent; more preferably, the silane coupling agent is Si69, KH570 or KH550 and the titanate coupling agent is TMC-931 or TMC-27. The coupling agent is preferably used in an amount of 0.2 to 1.5 parts by weight.
In the technical scheme, the protective agent is a mixture of more than two of RD, 4020, BLE, 2-mercaptobenzimidazole, paraffin, CTP, styrenated phenol, sodium dithiosulfate compound and N, N '-phenylene bismaleimide, the addition amounts of RD, 4020, BLE, 2-mercaptobenzimidazole, paraffin, styrenated phenol, sodium dithiosulfate compound and N, N' -phenylene bismaleimide are respectively 0-2 parts by weight, and the addition amount of CTP is 0-1 part by weight. The amount of the repellent is preferably 3 to 4.5 parts by weight.
In the technical scheme, the accelerant is one or a mixture of DM, MDB, NS, CZ, D, DTDM and TMTD. The accelerator is preferably used in an amount of 0.6 to 1.5 parts by weight.
In the above technical scheme, the plasticizer is a weight average molecular weight MWIs 1 to 5 ten thousand Liquid Butadiene Rubber (LBR) or weight average molecular weight MWIs 1-5 ten thousand Liquid Isoprene Rubber (LIR). The amount of the plasticizer to be used is preferably 4 to 10 parts by weight.
In the technical scheme, the zinc oxide, the stearic acid and the sulfur are all commercially available products. The amount of sulfur is preferably 1.2 to 2 parts by weight.
The invention relates to a preparation method of sidewall rubber by taking synthetic rubber as basic rubber, which comprises the following steps:
step one, weighing each component according to a ratio;
step two, putting the synthetic cis-butadiene rubber, the synthetic cis-isoprene rubber, the synthetic trans-isoprene rubber and the synthetic ethylene propylene diene monomer rubber into an internal mixer, and internally mixing for 1-3 min;
step three, putting the protective agent, stearic acid, carbon black, white carbon black and a coupling agent into an internal mixer, and internally mixing for 2-8 min;
step four, putting zinc oxide and a plasticizer into an internal mixer, carrying out internal mixing for 1-4min, discharging rubber at the temperature of 100-140 ℃, and standing the rubber sheet in the environment of 20-50 ℃ for 1-6h to obtain rubber compound;
and step five, open milling the rubber compound on an open mill, wherein the roll temperature is 60-90 ℃, adding an accelerator and sulfur, uniformly mixing, and standing at room temperature for more than 12 hours to obtain the sidewall rubber taking the synthetic rubber as the base rubber.
In the technical scheme, the banburying temperature of the banbury mixer is 60-80 ℃, and the rotating speed is 20-70 rpm.
The vulcanization molding conditions of the sidewall rubber taking the synthetic rubber as the base rubber are as follows: the curing temperature is 130-160 ℃, the pressure is 0.2-20MPa, the curing time is 0.5-1h, the curing temperature is preferably 145 ℃, and the pressure is preferably 20 MPa.
The sidewall rubber taking the synthetic rubber as the base rubber is applied as sidewall rubber of an aircraft tire.
The terms used in the present invention generally have meanings commonly understood by those of ordinary skill in the art, unless otherwise specified.
In order to make those skilled in the art better understand the technical solution of the present invention, the present invention will be further described in detail with reference to the following embodiments.
In the following examples, various procedures and methods not described in detail are conventional methods well known in the art. Materials, reagents, devices, instruments, apparatuses and the like used in the following examples are commercially available unless otherwise specified. Wherein the natural rubber is a No. one smoked sheet rubber produced by Malaysia; synthesizing cis-isoprene rubber which is SKI-5PM produced by Russia; synthesizing butadiene rubber into BR9000 produced by Dushan mountain; the synthesized trans-isoprene rubber is JW/TPI4060 without tin megawatt.
Examples 1 to 5 and comparative examples 1 to 5
The formulations of the tread rubbers of examples 1 to 5 and comparative examples 1 to 5 are shown in table 1. The preparation method comprises the following steps:
step one, weighing each component according to a ratio;
putting natural rubber, synthetic cis-butadiene rubber, synthetic cis-isoprene rubber, synthetic trans-isoprene rubber and synthetic ethylene propylene diene monomer rubber into an internal mixer, and internally mixing for 1-3min at the temperature of 60-80 ℃ and the rotation speed of 20-70 rpm;
and step three, putting the protective agent, stearic acid, carbon black, white carbon black and the coupling agent into an internal mixer, and internally mixing for 2-8min at the temperature of 60-80 ℃ and at the rotating speed of 20-70 rpm.
Step four, putting zinc oxide and a plasticizer into an internal mixer, carrying out internal mixing for 1-4min, discharging rubber at the temperature of 100-140 ℃, and standing the rubber sheet in the environment of 20-50 ℃ for 1-6h to obtain rubber compound; the banburying temperature of the banbury mixer is 60-80 ℃, and the rotating speed is 20-70 rpm;
and step five, open milling the rubber compound on an open mill, wherein the roll temperature is 60-90 ℃, adding an accelerator and sulfur, uniformly mixing, and standing at room temperature for more than 12 hours to obtain the sidewall rubber taking the synthetic rubber as the base rubber.
TABLE 1 formulation of tread rubber for examples 1-5 and comparative examples 1-5
Figure BDA0002751223410000061
Figure BDA0002751223410000071
Figure BDA0002751223410000081
Figure BDA0002751223410000091
The formulations of the side rubbers of examples 1 to 5 and comparative examples 1 to 5 were tested for their properties, and the results are shown in Table 2.
TABLE 2 Properties of side rubbers of examples 1 to 5 and comparative examples 1 to 5
Figure BDA0002751223410000092
Figure BDA0002751223410000101
It should be understood that the above embodiments are only examples for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither necessary nor exhaustive of all embodiments. And obvious variations or modifications of the invention may be made without departing from the spirit or scope of the invention.

Claims (7)

1. Sidewall rubber with synthetic rubber as a base rubber, which is characterized by comprising:
20-60 parts of synthetic butadiene rubber;
40-70 parts by weight of synthetic cis-isoprene rubber;
5-15 parts by weight of synthetic trans-isoprene rubber;
0-15 parts of synthetic ethylene propylene diene monomer;
20-50 parts of carbon black;
0-30 parts of white carbon black;
0.1-2 parts of coupling agent;
3-5 parts of zinc oxide;
1-3 parts of stearic acid;
2-16 parts of a protective agent;
0.4-2 parts of sulfur;
0.4-2 parts of an accelerator;
2-10 parts of a plasticizer;
the plasticizer is weight average molecular weight M W 1 to 5 ten thousand liquid butadiene rubber or weight average molecular weight M W 1-5 ten thousand liquid isoprene rubber;
the number average molecular weight M of the synthetic cis-isoprene rubber n 15-40 ten thousand, the cis 1,4 content is more than or equal to 95 percent, and the molecular weight distribution is 1.0-2.8;
the number average molecular weight M of the synthetic butadiene rubber n 10-35 ten thousand, the content of cis 1,4 is more than or equal to 96 percent, and the molecular weight distribution is 1.0-3;
the weight average molecular weight M of the synthetic trans-isoprene rubber W 15-32 ten thousand, the content of trans-1, 4 is more than or equal to 98 percent, and the molecular weight distribution is 1.0-2.6;
the content of propylene in the synthetic ethylene propylene diene monomer is 25-50 wt%;
the protective agent is a mixture of more than two of RD, 4020, BLE, 2-mercaptobenzimidazole, paraffin, CTP, styrenated phenol and HTS, the addition amounts of RD, 4020, BLE, 2-mercaptobenzimidazole, paraffin, styrenated phenol and HTS are respectively 0-2 parts by weight, and the addition amount of CTP is 0-1 part by weight.
2. The sidewall rubber based on synthetic rubber of claim 1, wherein the carbon black has a compressed DBP value of 62-106 cm/100 g, and a weight loss at 180 ℃ of less than or equal to 3.0;
the primary particle size of the white carbon black is less than or equal to 30nm, and the DBP absorption value is 400 m/g.
3. Sidewall rubber based on synthetic rubber according to claim 1, characterized in that the coupling agent is a silane coupling agent or a titanate coupling agent, the silane coupling agent is Si69, KH570 or KH550, and the titanate coupling agent is TMC-931 or TMC-27.
4. Sidewall rubber based on synthetic rubber according to claim 1, characterized in that the accelerator is a mixture of one or more of DM, MDB, NS, CZ, D, DTDM, TMTD.
5. Process for the preparation of a sidewall rubber based on synthetic rubber according to any of claims 1 to 4, characterized in that it comprises the following steps:
step one, weighing each component according to a ratio;
step two, putting the synthetic cis-butadiene rubber, the synthetic cis-isoprene rubber, the synthetic trans-isoprene rubber and the synthetic ethylene propylene diene monomer rubber into an internal mixer, and internally mixing for 1-3 min;
step three, putting the protective agent, stearic acid, carbon black, white carbon black and a coupling agent into an internal mixer, and internally mixing for 2-8 min;
step four, putting zinc oxide and a plasticizer into an internal mixer, carrying out internal mixing for 1-4min, discharging rubber at the temperature of 100-140 ℃, and standing the rubber sheet in the environment of 20-50 ℃ for 1-6h to obtain rubber compound;
and step five, open milling the rubber compound on an open mill, wherein the roll temperature is 60-90 ℃, adding an accelerator and sulfur, uniformly mixing, and standing at room temperature for more than 12 hours to obtain the sidewall rubber taking the synthetic rubber as the base rubber.
6. The method for preparing sidewall rubber based on synthetic rubber according to claim 5, wherein the banburying temperature of the banbury mixer is 60 to 80 ℃ and the rotation speed is 20 to 70 rpm.
7. Use of a sidewall rubber based on an elastomeric rubber according to any one of claims 1 to 4 as sidewall rubber for aircraft tires.
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CN103694506A (en) * 2013-11-26 2014-04-02 山东永泰化工有限公司 Ozone aging-resistant sidewall rubber used for light truck
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