CN112920473A - All-steel tread bottom rubber composition with low deformation rigidity and anti-groove crack performance and tire - Google Patents
All-steel tread bottom rubber composition with low deformation rigidity and anti-groove crack performance and tire Download PDFInfo
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- 239000005060 rubber Substances 0.000 title claims abstract description 92
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- 239000010959 steel Substances 0.000 title claims abstract description 24
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- 244000043261 Hevea brasiliensis Species 0.000 claims abstract description 19
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- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 claims abstract description 4
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 claims abstract description 4
- 230000001681 protective effect Effects 0.000 claims abstract description 4
- 239000008117 stearic acid Substances 0.000 claims abstract description 4
- 239000011787 zinc oxide Substances 0.000 claims abstract description 4
- 238000005336 cracking Methods 0.000 claims description 25
- 229910052779 Neodymium Inorganic materials 0.000 claims description 9
- GHMLBKRAJCXXBS-UHFFFAOYSA-N resorcinol Chemical compound OC1=CC=CC(O)=C1 GHMLBKRAJCXXBS-UHFFFAOYSA-N 0.000 claims description 8
- 239000002131 composite material Substances 0.000 claims description 7
- QEFYFXOXNSNQGX-UHFFFAOYSA-N neodymium atom Chemical compound [Nd] QEFYFXOXNSNQGX-UHFFFAOYSA-N 0.000 claims description 6
- 238000005516 engineering process Methods 0.000 claims description 5
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 claims description 4
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical group [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims description 4
- 229920001568 phenolic resin Polymers 0.000 claims description 4
- 239000005011 phenolic resin Substances 0.000 claims description 4
- 239000011701 zinc Substances 0.000 claims description 4
- 229910052725 zinc Inorganic materials 0.000 claims description 4
- RRHGJUQNOFWUDK-UHFFFAOYSA-N Isoprene Chemical compound CC(=C)C=C RRHGJUQNOFWUDK-UHFFFAOYSA-N 0.000 claims description 3
- 239000003124 biologic agent Substances 0.000 claims description 3
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- QAZLUNIWYYOJPC-UHFFFAOYSA-M sulfenamide Chemical compound [Cl-].COC1=C(C)C=[N+]2C3=NC4=CC=C(OC)C=C4N3SCC2=C1C QAZLUNIWYYOJPC-UHFFFAOYSA-M 0.000 description 2
- 229910052717 sulfur Inorganic materials 0.000 description 2
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L7/00—Compositions of natural rubber
-
- 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
- B60C1/0016—Compositions of the tread
-
- 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
- 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
-
- 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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- Chemical & Material Sciences (AREA)
- 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 the technical field of tire rubber, in particular to an all-steel tread bottom rubber composition with low deformation rigidity and anti-groove crack performance and a tire. The rubber material comprises the following components in parts by weight: 50-70 parts of natural rubber, 10-20 parts of trans-butadiene rubber, 15-20 parts of tear-resistant modified rubber, 5-15 parts of high-cis neodymium butadiene rubber, 15-25 parts of carbon black, 20-40 parts of high-dispersion white carbon black, 1.0-2.0 parts of silane coupling agent Si7694.0, 1.0-2.0 parts of fatigue inhibitor, 1.0-2.0 parts of low-heat-generation modifier, 1.5-3.0 parts of white carbon black dispersant, 3.5-5.0 parts of zinc oxide, 1.5-3.0 parts of stearic acid, 40201.0-3.0 parts of anti-aging agent RD 1.5-2.5 parts of rubber protective wax, 1.0-4.0 parts of HDOT 20-801.5-2.5 parts of antioxidant, 0.3-0.5 parts of heat-resistant cross-linking agent and 0.5 parts of accelerator NS-801.0-2.5 parts of accelerator. On the basis of ensuring low heat generation, the rigidity of the tread bottom rubber is improved, the deformation resistance and the crack resistance of the tread bottom rubber can be obviously improved, and the problem of tire crack is effectively improved.
Description
Technical Field
The invention relates to the technical field of tire rubber, in particular to an all-steel tread bottom rubber composition with low deformation rigidity and anti-groove crack performance and a tire.
Background
As is well known, the tubeless all-steel radial tire has high running speed and long mileage, the loading capacity of the tubeless all-steel radial tire is large, the tire shoulder is continuously subjected to large deformation in the running process of the tire, the temperature of the tire shoulder of the tire is relatively high, the phenomena of vulcanization reversion of the tire crown and the tire shoulder caused by large heat accumulation can be caused, the physical performance of rubber materials is reduced, the phenomena of delamination of the tire tread and the tire shoulder or crown vacancy and the like easily occur in the use process of the tire, in order to improve the market symptoms, technicians in the tire industry design a layer of tread bottom rubber at the bottom of the tread rubber, the heat generation of the tread bottom rubber is lower than that of the tread rubber materials, the consideration of the wear resistance is lower than that of the tread, the layer rubber has strict thickness design requirements according to different specifications, the improved design reduces the whole heat generation of the tire crown of the tire, reduces, although the tread bottom layer rubber has low heat generation, the rubber material has low hardness and low modulus, is positioned at the top of a belt ply with higher modulus and rigidity, is used for the specification of a tyre with a large carrying capacity and small groove bottom thickness of a pattern, particularly for a longitudinal zigzag pattern, the zigzag position is easy to generate stress concentration after inflation, the early pattern groove cracking phenomenon often occurs, and the belt ply is punctured and the tyre burst phenomenon seriously occurs along with the extension of the stress deflection deformation time of the bottom of the pattern and the extension of the crack.
At present, the design of the tread base rubber is reported, in the tire tread base rubber composition, the problem of crown void of the tire is reduced by reducing the heat buildup property of the tread base rubber, the invention only uses natural rubber and liquid butadiene rubber, the general carbon black and white carbon black matching design integrally reduces the heat generation of the rubber material, and the problem of preventing the ditch crack due to the deformation of the rubber material is not reported to be improved; aiming at the report of tire groove cracking, the analysis and solution of the cause of early groove cracking in the use of heavy duty tires in Liu ice and Jiang red sea, the purpose of improving groove cracking is achieved by adjusting construction design and modifying a mold, reducing the groove depth, reducing the stress concentration at the bottom of the groove and the deformation amplitude of rubber, and the report of the formula of the related rubber material how to improve groove cracking is not provided.
Disclosure of Invention
The invention aims to overcome the defects of the prior art, and provides an all-steel tread base rubber composition with low deformation rigidity and anti-groove crack and a tire.
The technical scheme adopted by the invention for solving the technical problems is as follows: the all-steel tread bottom rubber composition with low deformation rigidity and anti-groove crack performance is characterized by comprising the following components in parts by weight through mixing: 50-70 parts of natural rubber, 10-20 parts of trans-butadiene rubber, 15-20 parts of tear-resistant modified rubber, 5-15 parts of high-cis neodymium butadiene rubber, 15-25 parts of carbon black, 20-40 parts of high-dispersion white carbon black, 1.0-2.0 parts of silane coupling agent Si7694.0, 1.0-2.0 parts of fatigue inhibitor, 1.0-2.0 parts of low-heat-generation modifier, 1.5-3.0 parts of white carbon black dispersant, 3.5-5.0 parts of zinc oxide, 1.5-3.0 parts of stearic acid, 40201.0-3.0 parts of anti-aging agent RD 1.5-2.5 parts of rubber protective wax, 1.0-4.0 parts of HDOT 20-801.5-2.5 parts of antioxidant, 0.3-0.5 parts of heat-resistant cross-linking agent and 0.5 parts of accelerator NS-801.0-2.5 parts of accelerator.
Preferably, the ratio of the parts of the natural rubber to the parts of the tear-resistant modified rubber is greater than or equal to 3:1 and less than or equal to 4: 1.
Preferably, the tear-resistant modified rubber is high-performance modified composite natural rubber prepared by mixing natural latex, an environment-friendly biological agent and 1 wt% of modified short fibers by a block modification technology in a wet method.
Preferably, the high-cis neodymium-based butadiene rubber is obtained by catalyzing and polymerizing high-cis butadiene rubber through a neodymium catalyst.
Preferably, the fatigue inhibitor is a complex of resorcinol and a phenolic resin.
Preferably, the high-dispersion white carbon black is 1165 or 200MP or PSW.
Preferably, the antioxidant is zinc dialkyldithiophosphate.
Preferably, the heat-resistant crosslinking agent is a polymaleimide composition.
A tire, a tire undertread made using the aforementioned all-steel undertread rubber composition having low deformation stiffness and resistance to groove cracking, and a tire made using the tire undertread.
The invention has the advantages that the strain rigidity and the composite modulus of the rubber material are improved, the compression and tension permanent deformation are reduced, the strain of the tire under load is reduced, and the problem of cracking caused by the stress concentration of the groove bottom in the running process of the tire is prevented; the problem that the physical performance of the tire is reduced too fast due to temperature rise caused by heat accumulation in the using process of the tire is solved by improving the self-flexing fatigue performance of the rubber material, so that the high-load deformation resistance of the tire is improved, and the problem of tire groove cracking is reduced.
Detailed Description
The present invention will be further described with reference to the following examples.
Table one: formulation matching table of the invention (examples, unit: parts by weight)
| Recipe number | Comparative example | Example 1 | Example 2 |
| Natural rubber | 100 | 60 | 55 |
| Trans-butyl amyl rubber | 10 | 10 | |
| High cis-neodymium butadiene rubber | 10 | 20 | |
| Tear-resistant modified rubber | 20 | 15 | |
| Carbon Black N375 | 20 | ||
| Carbon Black N660 | 25 | 20 | 15 |
| White carbon black | 10 | ||
| High-dispersion white carbon black | 25 | 28 | 35 |
| White carbon black dispersant | 1.5 | 2.0 | 2.5 |
| Silane coupling agent Si747 | 5.0 | 5.0 | 7.0 |
| Fatigue inhibitor | 1.5 | 1.0 | 1.5 |
| Low heat generation modifier | 1.0 | 1.5 | 1.5 |
| Zinc oxide | 3.5 | 4.0 | 4.5 |
| Stearic acid | 2.0 | 2.0 | 2.0 |
| Antiager RD | 1.5 | 1.5 | 1.5 |
| Anti-aging agent 4020 | 2.5 | 1.5 | 1.5 |
| Rubber protective wax | 2.0 | 1.5 | 1.5 |
| Antioxidant agent | 0.4 | 0.5 | 0.3 |
| Heat-resistant crosslinking agent | 1.0 | 1.0 | 1.0 |
| HDOT20-80 | 1.5 | 1.8 | 1.6 |
| Accelerator NS-80 | 1.5 | 2.0 | 2.5 |
In order to confirm the reliability of the effect of the invention, the invention is compared with a comparison formula and various performance indexes, and the result is shown in a table I, a table II and a table III: the second table is the comparison of the physical and mechanical properties of the comparative example and the example, the third table is the dynamic property, generally, the tensile product represents the tearing and cracking resistance of the rubber compound, the larger the tensile product is, the higher the tearing and cracking resistance is, the composite modulus E at 25 ℃ represents the rigidity of the rubber compound, and the higher the numerical value is, the higher the rigidity is, the stronger the deformation resistance is; the hysteresis loss of the tire is characterized by 60 ℃ tan delta, and the smaller the value is, the lower the hysteresis loss is, and the lower the heat generation of the tire is; the stretching deformation and the compression deformation represent the deformation degree of the tire stressed in the driving process, and the smaller the deformation is, the lower the deformation rigidity is, and the deformation is not easy to occur.
Table two: physical and mechanical properties of the sizing materials of examples 1-2 and comparative examples of the invention
The performance of the rubber compound is tested according to national standard or industry standard, the vulcanization condition of the rubber compound is 150 ℃ for 30min, the tensile product is defined as tensile strength and elongation at break, and the tear resistance and crack resistance of the rubber compound are indirectly characterized; compression heat generation test conditions: the thermal aging test conditions of the prestress of 1MPa, the frequency of 10Hz and the initial temperature of 55 ℃ are as follows: 100 ℃ for 48 hours, and the thermal aging coefficient is defined as post-aging tensile product/pre-aging tensile product
Table three: dynamic mechanical properties of the rubber compositions of examples 1-2 and comparative examples
| Test items | Comparative formulation | Example 1 | Example 2 |
| E at 5 ℃ (10%) | 3.800 | 5.625 | 6.010 |
| Tanδ(60℃) | 0.055 | 0.040 | 0.038 |
A dynamic viscoelasticity analyzer DMA produced by Germany GABO is adopted to carry out temperature scanning on vulcanized rubber, and the test conditions are as follows: static strain is 15%, dynamic strain is 5%, frequency is 10Hz, temperature range is 30-100 ℃, and heating rate is 2 ℃/min.
As can be seen from tables II and III, the example is a rubber composition with low strain stiffness, which has the hardness improved by more than 5 points compared with the comparative example, the compression permanent deformation is less than or equal to 3.0 percent, the tensile permanent deformation is less than or equal to 10 percent, the complex modulus E (25 ℃, 10 percent) is more than 5.0, the comparative example is improved by more than 40 percent, and the tear strength is improved by more than 10 percent; the number of flexing times can reach more than 30 ten thousand, and the crack growth rate is reduced by more than 8 percent compared with the reference formula, which is beneficial to improving the crack resistance; tan delta (60 ℃) is less than or equal to 0.040, compression temperature rise is low, thermal aging coefficient is improved, low heat generation and heat resistance of rubber materials are guaranteed, physical property reduction caused by heat accumulation is reduced, and deformation and cracking are prevented.
Preferably, the rubber composition of the all-steel tread bottom layer with low deformation rigidity and resistance to groove cracking is designed by combining four rubbers of natural rubber, trans-butyl-pentyl rubber (TBIR), tear-resistant modified rubber and high cis-neodymium cis-butyl rubber according to a certain proportion, the ratio of the parts of the natural rubber to the parts of the tear-resistant modified rubber is more than or equal to 3:1 and less than or equal to 4:1, and the trans-butyl-pentyl rubber can improve the fatigue cracking performance of rubber materials.
Preferably, the tear-resistant modified rubber is a high-performance modified composite natural rubber which is prepared by mixing natural latex, an environment-friendly biological agent and 1 wt% of modified short fibers by a wet method through a block modification technology and is produced by an environment-friendly latex method production process, wherein the trade name of the modified natural rubber is NRX-N1, the modified rubber is produced by Qingdao Jinruina rubber science and technology Limited, and the tear-resistant modified rubber has the rigidity of the tread bottom rubber, namely the hardness is high, and the composite modulus E is*High, in direct contact with the belt, preventing strain-cracking.
Preferably, the high-cis neodymium-based butadiene rubber and the new-generation high-cis butadiene rubber are polymerized under the catalysis of a neodymium-based catalyst, have a 1, 4-cis content of more than 98.8 percent and a lower 1, 2-vinyl content of less than 5 percent, are produced under the trade name of Buna Nd22 EZ by Arrhenikoku, have flexible molecular chains, and improve the fatigue resistance of rubber materials.
Preferably, the fatigue inhibitor is a complex compound of resorcinol and phenolic resin, which can improve the tearing resistance and the deformation and crack resistance of the rubber compound and simultaneously reduce the heat generation of the tread base rubber, and is produced by yellow rock east China sea chemical industry Co., Ltd, Taizhou city, with the trade name of G-108.
Preferably, the above all-steel tread underlayer rubber composition with low deformation stiffness and resistance to groove cracking, said low thermogenic modifier, Acroad DC-02, reacts with the molecular chain ends of natural rubber and the functional groups on the surface of carbon black to form a coupling between natural rubber and carbon black, thereby improving the dispersibility of carbon black and reducing thermogenesis from tsukamur chemical production.
Preferably, in the all-steel tread base rubber composition with low deformation rigidity and crack resistance, the carbon black is N660 or N550, and the high dispersion white carbon black is 1165, 200MP and PSW.
Preferably, the anti-cracking all-steel tread bottom rubber composition with low deformation rigidity is produced by using the antioxidant, zinc dialkyl dithiophosphate, a peroxide decomposition type antioxidant and Jiangsu Qixiang high-new material, and the antioxidant and sulfenamide accelerators act synergistically to produce single-sulfur bonds and multi-sulfur bonds in a high proportion.
Preferably, the heat-resistant cross-linking agent of the all-steel tread base rubber composition with low deformation rigidity and anti-groove cracking belongs to a polymaleimide composition, and directly participates in vulcanization cross-linking through an Alder-Ene reaction to reconstruct a system network, and a plurality of benzene rings on a molecular structure enhance the action mode of carbon black and rubber, so that the dispersion of the carbon black is improved, the stress deformation of a tread base rubber part is reduced, and the groove cracking is prevented.
Preferably, the all-steel tread bottom rubber composition with low deformation rigidity and crack resistance has the hardness of 64-68, the compression permanent deformation of less than or equal to 3.0 percent, the tensile permanent deformation of less than or equal to 10 percent, Tan delta (60 ℃) of less than or equal to 0.040 percent, the complex modulus E (25 ℃, 10%) of more than 5.0, the deflection of more than 30 ten thousand times and the crack growth rate reduced by more than 8 percent compared with the reference formula.
The key technology of the invention is that four rubbers of natural rubber, trans-butyl-pentyl rubber (TBIR), tear-resistant modified rubber and high cis-neodymium butadiene rubber are combined and designed according to a certain proportion, the natural rubber has good comprehensive performance, the trans-butyl-pentyl rubber can improve the fatigue cracking performance of rubber materials, the neodymium butadiene rubber with high cis content and low styrene content has flexible molecular chains, strong fatigue deformation resistance and low heat generation, and the tear-resistant modified rubber is used for changing the traditional tread with low modulus and low hardnessThe design of the bottom layer rubber improves the deformation rigidity of the tread bottom layer rubber, increases the hardness and improves the composite modulus E of the characterization rigidity*In direct contact with the belt to prevent strain cracking; by using a complex fatigue inhibitor of the reaction of resorcinol and phenolic resin, the tear resistance and the deformation and crack resistance of the rubber material can be improved, and the heat generation of the tread bottom rubber is reduced; from the aspect of improving the dispersion of the sizing material carbon black, the low-heat-generation modifier is used, the coupling between the traditional natural rubber and the white carbon black is changed, the coupling between the natural rubber and the carbon black is enhanced, the dispersion is improved, the heat generation is reduced, and the deformation and cracking resistance is improved; in the aspect of a vulcanization system, the zinc dialkyl dithiophosphate and polymaleimide composition is applied to exert the synergistic effect with a sulfenamide accelerator, so that more monosulfur bonds and polysulfide bonds are produced, the heat resistance of the rubber material is improved, the physical property is prevented from being reduced, and the crack performance of the groove bottom is improved.
Claims (9)
1. The all-steel tread bottom rubber composition with low deformation rigidity and anti-groove crack performance is characterized by comprising the following components in parts by weight through mixing: 50-70 parts of natural rubber, 10-20 parts of trans-butadiene rubber, 15-20 parts of tear-resistant modified rubber, 5-15 parts of high-cis neodymium butadiene rubber, 15-25 parts of carbon black, 20-40 parts of high-dispersion white carbon black, 1.0-2.0 parts of silane coupling agent Si7694.0, 1.0-2.0 parts of fatigue inhibitor, 1.0-2.0 parts of low-heat-generation modifier, 1.5-3.0 parts of white carbon black dispersant, 3.5-5.0 parts of zinc oxide, 1.5-3.0 parts of stearic acid, 40201.0-3.0 parts of anti-aging agent RD 1.5-2.5 parts of rubber protective wax, 1.0-4.0 parts of HDOT 20-801.5-2.5 parts of antioxidant, 0.3-0.5 parts of heat-resistant cross-linking agent and 0.5 parts of accelerator NS-801.0-2.5 parts of accelerator.
2. The all-steel tread base rubber composition with low deformation rigidity and resistance to groove cracking of claim 1, wherein the ratio of the parts of natural rubber to the parts of tear-resistant modified rubber is greater than or equal to 3:1 and less than or equal to 4: 1.
3. The all-steel tread base rubber composition with low deformation rigidity and resistance to groove cracking of claim 1, wherein the tear-resistant modified rubber is high-performance modified composite natural rubber prepared by wet mixing natural latex, an environment-friendly biological agent and 1 wt% of modified short fibers by using a block modification technology.
4. The low-deformation-rigidity anti-groove-crack all-steel tread base rubber composition as claimed in claim 1, wherein the high-cis neodymium-based butadiene rubber is obtained by catalytic polymerization of high-cis butadiene rubber through a neodymium-based catalyst.
5. The low deformation stiffness anti-rutting all steel undertread rubber composition of claim 1, wherein the fatigue inhibitor is a complex of resorcinol and a phenolic resin.
6. The all-steel tread base rubber composition with low deformation rigidity and anti-groove cracking performance as claimed in claim 1, wherein the high-dispersion white carbon black is 1165 or 200MP or PSW.
7. The low deformational stiffness anti-rutting all steel undertread rubber composition of claim 1, in which the antioxidant is zinc dialkyldithiophosphate.
8. The all-steel tread base rubber composition with low deformation rigidity and anti-groove crack of claim 1, characterized in that the heat-resistant cross-linking agent is a polymaleimide composition.
9. A tire characterized by using the all steel tread base rubber composition with low deformation rigidity and resistance to groove cracking of claim 1 to prepare a tire tread base and a tire prepared by using the tire tread base.
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