CN114230934A - Aircraft tire inner liner rubber and preparation method thereof - Google Patents
Aircraft tire inner liner rubber and preparation method thereof Download PDFInfo
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- CN114230934A CN114230934A CN202111638323.XA CN202111638323A CN114230934A CN 114230934 A CN114230934 A CN 114230934A CN 202111638323 A CN202111638323 A CN 202111638323A CN 114230934 A CN114230934 A CN 114230934A
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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
- C08L23/26—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers modified by chemical after-treatment
- C08L23/28—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers modified by chemical after-treatment by reaction with halogens or compounds containing halogen
- C08L23/283—Halogenated homo- or copolymers of iso-olefins
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- 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
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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
- 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
- C08L2201/00—Properties
- C08L2201/14—Gas barrier composition
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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
- 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
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/80—Technologies aiming to reduce greenhouse gasses emissions common to all road transportation technologies
- Y02T10/86—Optimisation of rolling resistance, e.g. weight reduction
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Tires In General (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention provides an aircraft tire inner liner rubber and a preparation method thereof, and belongs to the technical field of high polymer materials. The aircraft tire inner liner rubber comprises the following preparation raw materials in parts by weight: 50-70 parts of butyl bromide rubber, 30-50 parts of brominated isobutylene-p-methylstyrene copolymer, 40-50 parts of N660 carbon black, 10-20 parts of N375 carbon black, 4-8 parts of naphthenic oil, 2-4 parts of dibutyl phthalate, 6-1003 parts of a homogenizing agent RH-1003, 0.5-1 part of an anti-aging agent RD, 1-3 parts of stearic acid, 0.1-0.2 part of magnesium oxide, 2-6 parts of phenolic tackifying resin, 0.6 part of insoluble sulfur IS-600.4, 1-1.5 parts of an active agent ZnO-800.5 and 1-2 parts of a benzothiazole accelerator. The aircraft tire inner liner rubber has the advantages of good air tightness, good aging resistance, good semi-finished product bonding performance, ozone aging resistance and good processing technology.
Description
Technical Field
The invention relates to the technical field of high polymer materials, in particular to an aircraft tire inner liner rubber and a preparation method thereof.
Background
At present, most of aviation tires at home and abroad are tubeless tires, an inner liner layer with good air permeability resistance is arranged in a tire, so that the sealing effect is achieved, and meanwhile, the tire body cord fabric layer of the tire is protected. Further, since the tire bears a large load during use, the inflation internal pressure is high, and heat generation is large, the inner liner rubber is liable to suffer from defects such as deterioration in aging properties, reduction in airtightness, and reduction in surface tackiness.
Disclosure of Invention
The invention aims to provide an aircraft tire inner liner rubber and a preparation method thereof.
In order to achieve the above object, the present invention provides the following technical solutions:
the invention provides an aircraft tire inner liner rubber which comprises the following preparation raw materials in parts by weight: 50-70 parts of butyl bromide rubber, 30-50 parts of brominated isobutylene-p-methylstyrene copolymer, 40-50 parts of N660 carbon black, 10-20 parts of N375 carbon black, 4-8 parts of naphthenic oil, 2-4 parts of dibutyl phthalate, 6-1003 parts of a homogenizing agent RH-1003, 0.5-1 part of an anti-aging agent RD, 1-3 parts of stearic acid, 0.1-0.2 part of magnesium oxide, 2-6 parts of phenolic tackifying resin, 0.6 part of insoluble sulfur IS-600.4, 1-1.5 parts of an active agent ZnO-800.5 and 1-2 parts of a benzothiazole accelerator.
Preferably, the method comprises the following preparation raw materials in parts by weight: 50 parts of butyl bromide rubber, 50 parts of brominated isobutylene-p-methylstyrene copolymer, 40 parts of N660 carbon black, 20 parts of N375 carbon black, 4 parts of naphthenic oil, 3 parts of dibutyl phthalate, RH-1003 parts of homogenizing agent, 1 part of antioxidant RD, 1 part of stearic acid, 0.2 part of magnesium oxide, 6 parts of phenolic tackifying resin, 600.6 parts of insoluble sulfur IS-600, 801 parts of activator ZnO-801 and 1.5 parts of benzothiazole accelerator.
Preferably, the method comprises the following preparation raw materials in parts by weight: 60 parts of butyl bromide rubber, 40 parts of brominated isobutylene-p-methylstyrene copolymer, 45 parts of N660 carbon black, 10 parts of N375 carbon black, 5 parts of naphthenic oil, 2 parts of dibutyl phthalate, RH-1005 parts of homogenizing agent, 0.5 part of anti-aging agent RD, 3 parts of stearic acid, 0.1 part of magnesium oxide, 2 parts of phenolic tackifying resin, 2 parts of insoluble sulfur IS-600.4 parts, ZnO-801.5 parts of activator and 1 part of benzothiazole accelerator.
Preferably, the method comprises the following preparation raw materials in parts by weight: 70 parts of butyl bromide rubber, 30 parts of brominated isobutylene-p-methylstyrene copolymer, 45 parts of N660 carbon black, 15 parts of N375 carbon black, 6 parts of naphthenic oil, 3 parts of dibutyl phthalate, RH-1004 parts of homogenizing agent, 0.5 part of antioxidant RD, 2 parts of stearic acid, 0.15 part of magnesium oxide, 4 parts of phenolic tackifying resin, 600.5 parts of insoluble sulfur IS-600.5 parts of activator ZnO-801.25 parts and 1.25 parts of benzothiazole accelerator.
The invention provides a preparation method of an aircraft tire inner liner rubber, which comprises the following steps:
mixing and banburying butyl bromide rubber, brominated isobutylene-p-methylstyrene copolymer, homogenizing agent RH-100 and magnesium oxide, raising the mixing temperature to 70-80 ℃, adding N660 carbon black and N375 carbon black, continuing to mix and banbury, raising the mixing temperature to 100-110 ℃, adding naphthenic oil, dibutyl phthalate, phenolic tackifying resin, stearic acid and antioxidant RD, continuing to mix and banbury until the temperature is raised to 120-130 ℃, slicing the obtained mixture, and cooling to obtain a section of rubber compound;
and mixing and banburying the first-stage mixing rubber, an activator ZnO-80, insoluble sulfur IS-60 and a benzothiazole accelerator to 98 ℃, discharging, and cooling to obtain the aircraft tire inner liner rubber.
Preferably, before the first-stage mixing rubber, the ZnO-80 serving as an active agent, the IS-60 insoluble sulfur and the benzothiazole accelerator are mixed and banburied, the first-stage mixing rubber IS kept for 16-24 hours.
The invention provides an aircraft tire inner liner rubber which is characterized by comprising the following preparation raw materials in parts by weight: 50-70 parts of butyl bromide rubber, 30-50 parts of brominated isobutylene-p-methylstyrene copolymer, 40-50 parts of N660 carbon black, 10-20 parts of N375 carbon black, 4-8 parts of naphthenic oil, 2-4 parts of dibutyl phthalate, 6-1003 parts of a homogenizing agent RH-1003, 0.5-1 part of an anti-aging agent RD, 1-3 parts of stearic acid, 0.1-0.2 part of magnesium oxide, 2-6 parts of phenolic tackifying resin, 0.6 part of insoluble sulfur IS-600.4, 1-1.5 parts of an active agent ZnO-800.5 and 1-2 parts of a benzothiazole accelerator.
The crude rubber system adopts a brominated butyl rubber (BIIR) and brominated isobutylene-p-methylstyrene copolymer (BIMSM) combined system, the brominated butyl rubber (BIIR) has the characteristics of low permeability, aging resistance, weathering aging resistance, good damping performance, high elongation at break, poor scorching safety and poor processing manufacturability, and the brominated isobutylene-p-methylstyrene copolymer (BIMSM) has better scorching safety, processing manufacturability and air tightness; the reinforcing system adopts general N660 carbon black, and a small amount of N375 carbon black is used, the N660 carbon black has low heat generation during compression, good reinforcing performance and good mixing technological performance, improves the air tightness of rubber compound, and has good reinforcing effect of the N375 carbon black; phenolic tackifying resin is added in the formula to improve the viscosity of the semi-finished product of the rubber compound and improve the processing manufacturability; the vulcanizing system adopts an active agent (ZnO-80), insoluble sulfur IS-60 and a benzothiazole accelerator, and the active agent (ZnO-80) IS easy to disperse and IS convenient to add at the later stage. The components of the invention are matched, and the obtained aircraft tire inner liner rubber has the characteristics of good air tightness, good aging resistance, good semi-finished product bonding performance, ozone aging resistance, good processing technology and the like. The specific properties are shown in Table 1.
TABLE 1 Airtight layer rubber Properties of aircraft tire according to the invention
Detailed Description
The invention provides an aircraft tire inner liner rubber which comprises the following preparation raw materials in parts by weight: 50-70 parts of butyl bromide rubber, 30-50 parts of brominated isobutylene-p-methylstyrene copolymer, 40-50 parts of N660 carbon black, 10-20 parts of N375 carbon black, 4-8 parts of naphthenic oil, 2-4 parts of dibutyl phthalate, 6-1003 parts of a homogenizing agent RH-1003, 0.5-1 part of an anti-aging agent RD, 1-3 parts of stearic acid, 0.1-0.2 part of magnesium oxide, 2-6 parts of phenolic tackifying resin, 0.6 part of insoluble sulfur IS-600.4, 1-1.5 parts of an active agent ZnO-800.5 and 1-2 parts of a benzothiazole accelerator.
In the present invention, the starting materials used are all commercially available products well known in the art, unless otherwise specified.
The raw materials for preparing the aircraft tire inner liner rubber comprise, by weight, 50-70 parts of butyl bromide rubber, and preferably 55-65 parts of butyl bromide rubber. In the examples of the present invention, the butyl bromide rubber is used in an amount of 50 parts, 60 parts or 70 parts. In the invention, the butyl bromide rubber (BIIR) has the advantages of low permeability, aging resistance, weather aging resistance, good damping performance and high elongation at break, but has poor scorching safety and poor processing manufacturability.
Based on the weight parts of the brominated butyl rubber, the raw materials for preparing the aviation tire inner liner rubber provided by the invention comprise 30-50 parts of brominated isobutylene-p-methylstyrene copolymer, preferably 35-45 parts. In the examples of the present invention, it is specifically 30 parts, 40 parts or 50 parts. In the invention, the brominated isobutylene-paramethylstyrene copolymer (BIMSM) has better scorch safety, processing manufacturability and air tightness, and can make up the defects of poor scorch safety and processing manufacturability of brominated butyl rubber (BIIR).
Based on the weight parts of the butyl bromide rubber, the raw materials for preparing the aviation tire inner liner rubber comprise 40-50 parts of N660 carbon black, preferably 42-47 parts. In the examples of the present invention, it is specifically 40 parts or 45 parts.
Based on the weight parts of the butyl bromide rubber, the raw materials for preparing the aviation tire inner liner rubber comprise 10-20 parts of N375 carbon black, and preferably 12-17 parts. In the examples of the present invention, it is specifically 10 parts, 15 parts or 20 parts. The reinforcing system adopts the general N660 carbon black and a small amount of N375 carbon black, the N660 carbon black has low heat generation during compression, good reinforcing performance and good mixing technological performance, improves the air tightness of rubber compound, and has good reinforcing effect of the N375 carbon black.
Based on the weight parts of the butyl bromide rubber, the raw materials for preparing the aviation tire inner liner rubber comprise 4-8 parts of naphthenic oil, preferably 5-6 parts. In the examples of the present invention, specifically 4 parts, 5 parts or 6 parts.
Based on the weight parts of the butyl bromide rubber, the raw materials for preparing the aviation tire inner liner rubber provided by the invention comprise 2-4 parts of dibutyl phthalate, and preferably 2.5-3.5 parts. In the examples of the present invention, it is specifically 2 parts or 3 parts.
Based on the weight parts of the butyl bromide rubber, the raw materials for preparing the aviation tire inner liner rubber comprise 4-5 parts of a homogenizing agent RH-1003-6 parts, preferably. In the examples of the present invention, it is specifically 3 parts, 4 parts or 5 parts.
The preparation raw material of the aviation tire inner liner rubber provided by the invention comprises 0.5-1 part of anti-aging agent RD based on the weight parts of the butyl bromide rubber. In the examples of the present invention, 1 part or 0.5 part is specific.
Based on the weight parts of the butyl bromide rubber, the raw materials for preparing the aviation tire inner liner rubber comprise 1-3 parts of stearic acid, and preferably 1.5-2.5 parts. In the examples of the present invention, it is specifically 1 part, 2 parts or 3 parts.
Based on the weight parts of the butyl bromide rubber, the raw materials for preparing the aviation tire inner liner rubber provided by the invention comprise 0.1-0.2 part of magnesium oxide. In the examples of the present invention, it is specifically 1 part, 0.15 part or 0.2 part.
Based on the weight parts of the butyl bromide rubber, the raw materials for preparing the aviation tire inner liner rubber provided by the invention comprise 2-6 parts of phenolic tackifying resin, and preferably 4-6 parts. In the examples of the present invention, it is specifically 2 parts, 4 parts or 6 parts. In the examples of the present invention, it is specifically 2 parts, 4 parts or 6 parts. In the present invention, the phenolic tackifying resin is preferably a 203 phenolic tackifying resin. According to the invention, the phenolic tackifying resin is added to improve the viscosity of the semi-finished product of the rubber compound and improve the processing manufacturability.
Based on the weight parts of the butyl bromide rubber, the raw materials for preparing the aviation tire inner liner rubber comprise insoluble sulfur IS-600.4-0.6 part, and preferably 0.45-0.55 part. In the examples of the present invention, it is specifically 0.4 parts, 0.5 parts or 0.6 parts.
Based on the weight parts of the butyl bromide rubber, the raw materials for preparing the aviation tire inner liner rubber comprise ZnO-800.5-1.5 parts of an active agent, and preferably 1.0-1.5 parts. In the examples of the present invention, it is specifically 1 part, 1.25 parts or 1.5 parts.
Based on the weight parts of the butyl bromide rubber, the raw materials for preparing the aviation tire inner liner rubber comprise 1-2 parts of benzothiazole accelerators, and preferably 1-1.5 parts. In the examples of the present invention, it is specifically 1 part, 1.25 parts or 1.5 parts.
The invention provides a preparation method of an aircraft tire inner liner rubber, which comprises the following steps:
mixing and banburying butyl bromide rubber, brominated isobutylene-p-methylstyrene copolymer, homogenizing agent RH-100 and magnesium oxide, raising the mixing temperature to 70-80 ℃, adding N660 carbon black and N375 carbon black, continuing to mix and banbury, raising the mixing temperature to 100-110 ℃, adding naphthenic oil, dibutyl phthalate, phenolic tackifying resin, stearic acid and antioxidant RD, continuing to mix and banbury until the temperature is raised to 120-130 ℃, slicing the obtained mixture, and cooling to obtain a section of rubber compound;
and mixing and banburying the first-stage mixing rubber, an activator ZnO-80, insoluble sulfur IS-60 and a benzothiazole accelerator to 98 ℃, discharging, and cooling to obtain the aircraft tire inner liner rubber.
In the context of the present invention, the respective mixing and internal mixing is preferably carried out in an internal mixer.
In the invention, before the first-stage mixing rubber, the ZnO-80 serving as an active agent, the IS-60 insoluble sulfur and the benzothiazole accelerator are mixed and banburied, the first-stage mixing rubber IS parked for 16-24 hours. The invention is used for 16-24 h, which is beneficial to further dispersing the auxiliary agent in the rubber uniformly, and the auxiliary agent is adsorbed and compatible with the rubber macromolecular chain to form more contained rubber, thereby improving the reinforcing effect on the rubber.
The aviation tire inner liner rubber provided by the invention and the preparation method thereof are described in detail with reference to the following examples, but the invention is not to be construed as being limited by the scope of the invention.
Examples 1 to 3
The kinds and amounts of the raw materials used in examples 1 to 3 are shown in Table 2.
(1) Adding butyl bromide rubber, brominated isobutylene-p-methylstyrene copolymer (BIMSM), homogenizing agent RH-100 and magnesium oxide into an internal mixer according to a proportion, mixing and banburying, and raising the mixing temperature to 70-80 ℃;
(2) putting N660 and N375 carbon black into an internal mixer according to the proportion, mixing and banburying, and raising the mixing temperature to 100-110 ℃;
(3) adding naphthenic oil, dibutyl phthalate, phenolic tackifying resin, stearic acid and an anti-aging agent into an internal mixer according to a proportion, and mixing and internally mixing;
(4) discharging the mixture out of the internal mixer to the lower piece of the tablet press when the mixing temperature reaches 130 ℃, and cooling to obtain a first-stage rubber compound;
(5) standing the first-stage rubber compound for 16h, adding the active agent ZnO-80, the insoluble sulfur IS-60 and the benzothiazole accelerator into an internal mixer together with the first-stage rubber compound according to the proportion, and mixing and internally mixing to 98 ℃;
(6) and discharging the mixture out of the internal mixer to a lower sheet of a tablet press, and cooling to obtain the aircraft tire inner liner rubber.
TABLE 2 formulations of examples 1 to 3 (parts by weight)
The aviation tire shoulder rubber prepared in the examples 1-3 is subjected to performance test, and the results are shown in table 3.
TABLE 3 performances of the aircraft tire innerliner rubbers of examples 1-3
The embodiments show that the aircraft tire inner liner rubber has the characteristics of good air tightness, good aging resistance, good semi-finished product bonding performance, ozone aging resistance, good processing technology and the like.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (6)
1. The aircraft tire inner liner rubber is characterized by comprising the following preparation raw materials in parts by weight: 50-70 parts of butyl bromide rubber, 30-50 parts of brominated isobutylene-p-methylstyrene copolymer, 40-50 parts of N660 carbon black, 10-20 parts of N375 carbon black, 4-8 parts of naphthenic oil, 2-4 parts of dibutyl phthalate, 6-1003 parts of a homogenizing agent RH-1003, 0.5-1 part of an anti-aging agent RD, 1-3 parts of stearic acid, 0.1-0.2 part of magnesium oxide, 2-6 parts of phenolic tackifying resin, 0.6 part of insoluble sulfur IS-600.4, 1-1.5 parts of an active agent ZnO-800.5 and 1-2 parts of a benzothiazole accelerator.
2. The aircraft tire inner liner rubber as claimed in claim 1, which is prepared from the following raw materials in parts by weight: 50 parts of butyl bromide rubber, 50 parts of brominated isobutylene-p-methylstyrene copolymer, 40 parts of N660 carbon black, 20 parts of N375 carbon black, 4 parts of naphthenic oil, 3 parts of dibutyl phthalate, RH-1003 parts of homogenizing agent, 1 part of antioxidant RD, 1 part of stearic acid, 0.2 part of magnesium oxide, 6 parts of phenolic tackifying resin, 600.6 parts of insoluble sulfur IS-600, 801 parts of activator ZnO-801 and 1.5 parts of benzothiazole accelerator.
3. The aircraft tire inner liner rubber as claimed in claim 1, which is prepared from the following raw materials in parts by weight: 60 parts of butyl bromide rubber, 40 parts of brominated isobutylene-p-methylstyrene copolymer, 45 parts of N660 carbon black, 10 parts of N375 carbon black, 5 parts of naphthenic oil, 2 parts of dibutyl phthalate, RH-1005 parts of homogenizing agent, 0.5 part of anti-aging agent RD, 3 parts of stearic acid, 0.1 part of magnesium oxide, 2 parts of phenolic tackifying resin, 2 parts of insoluble sulfur IS-600.4 parts, ZnO-801.5 parts of activator and 1 part of benzothiazole accelerator.
4. The aircraft tire inner liner rubber as claimed in claim 1, which is prepared from the following raw materials in parts by weight: 70 parts of butyl bromide rubber, 30 parts of brominated isobutylene-p-methylstyrene copolymer, 45 parts of N660 carbon black, 15 parts of N375 carbon black, 6 parts of naphthenic oil, 3 parts of dibutyl phthalate, RH-1004 parts of homogenizing agent, 0.5 part of antioxidant RD, 2 parts of stearic acid, 0.15 part of magnesium oxide, 4 parts of phenolic tackifying resin, 600.5 parts of insoluble sulfur IS-600.5 parts of activator ZnO-801.25 parts and 1.25 parts of benzothiazole accelerator.
5. The preparation method of the aircraft tire inner liner rubber as claimed in any one of claims 1 to 4, which is characterized by comprising the following steps:
mixing and banburying butyl bromide rubber, brominated isobutylene-p-methylstyrene copolymer, homogenizing agent RH-100 and magnesium oxide, raising the mixing temperature to 70-80 ℃, adding N660 carbon black and N375 carbon black, continuing to mix and banbury, raising the mixing temperature to 100-110 ℃, adding naphthenic oil, dibutyl phthalate, phenolic tackifying resin, stearic acid and antioxidant RD, continuing to mix and banbury until the temperature is raised to 120-130 ℃, slicing the obtained mixture, and cooling to obtain a section of rubber compound;
and mixing and banburying the first-stage mixing rubber, an activator ZnO-80, insoluble sulfur IS-60 and a benzothiazole accelerator to 98 ℃, discharging, and cooling to obtain the aircraft tire inner liner rubber.
6. The preparation method of claim 5, wherein before the first-stage mixing rubber and the active agent ZnO-80, the insoluble sulfur IS-60 and the benzothiazole accelerator are mixed and banned, the first-stage mixing rubber IS kept for 16-24 hours.
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| CN110862623A (en) * | 2019-11-29 | 2020-03-06 | 中国化工集团曙光橡胶工业研究设计院有限公司 | Graphene-containing aircraft tire sealing layer rubber material and preparation method thereof |
| CN113045806A (en) * | 2021-04-07 | 2021-06-29 | 厦门正新橡胶工业有限公司 | Rubber formula capable of shortening length of tire rubber |
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