CN116891599A - Engineering tire tread rubber composition and preparation method and application thereof - Google Patents
Engineering tire tread rubber composition and preparation method and application thereof Download PDFInfo
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- CN116891599A CN116891599A CN202310940101.6A CN202310940101A CN116891599A CN 116891599 A CN116891599 A CN 116891599A CN 202310940101 A CN202310940101 A CN 202310940101A CN 116891599 A CN116891599 A CN 116891599A
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- 229920001971 elastomer Polymers 0.000 title claims abstract description 94
- 239000005060 rubber Substances 0.000 title claims abstract description 94
- 239000000203 mixture Substances 0.000 title claims abstract description 48
- 238000002360 preparation method Methods 0.000 title abstract description 11
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 44
- 239000006229 carbon black Substances 0.000 claims abstract description 26
- 239000000945 filler Substances 0.000 claims abstract description 26
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims abstract description 22
- 238000005520 cutting process Methods 0.000 claims abstract description 20
- 230000003712 anti-aging effect Effects 0.000 claims abstract description 14
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 11
- 239000011787 zinc oxide Substances 0.000 claims abstract description 11
- 239000006087 Silane Coupling Agent Substances 0.000 claims abstract description 10
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims abstract description 10
- 230000005855 radiation Effects 0.000 claims abstract description 10
- 229920003048 styrene butadiene rubber Polymers 0.000 claims abstract description 10
- 239000011593 sulfur Substances 0.000 claims abstract description 10
- 229910052717 sulfur Inorganic materials 0.000 claims abstract description 10
- 235000021355 Stearic acid Nutrition 0.000 claims abstract description 9
- 150000001875 compounds Chemical class 0.000 claims abstract description 9
- 235000019808 microcrystalline wax Nutrition 0.000 claims abstract description 9
- 239000004200 microcrystalline wax Substances 0.000 claims abstract description 9
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 claims abstract description 9
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 claims abstract description 9
- 239000008117 stearic acid Substances 0.000 claims abstract description 9
- 230000017525 heat dissipation Effects 0.000 claims abstract description 8
- 244000043261 Hevea brasiliensis Species 0.000 claims abstract description 3
- 229920003052 natural elastomer Polymers 0.000 claims abstract description 3
- 229920001194 natural rubber Polymers 0.000 claims abstract description 3
- 239000004594 Masterbatch (MB) Substances 0.000 claims description 14
- 238000003825 pressing Methods 0.000 claims description 8
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical class [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 4
- 229910052581 Si3N4 Inorganic materials 0.000 claims description 4
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical group O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 4
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 claims description 4
- -1 tetrazine compound Chemical class 0.000 claims description 4
- 238000007670 refining Methods 0.000 claims description 3
- 125000003837 (C1-C20) alkyl group Chemical group 0.000 claims description 2
- PIBIAJQNHWMGTD-UHFFFAOYSA-N 1-n,3-n-bis(4-methylphenyl)benzene-1,3-diamine Chemical compound C1=CC(C)=CC=C1NC1=CC=CC(NC=2C=CC(C)=CC=2)=C1 PIBIAJQNHWMGTD-UHFFFAOYSA-N 0.000 claims description 2
- FPKOARNUITZHCF-UHFFFAOYSA-N 3,6-bis(3,5-dimethylpyrazol-1-yl)-1,2,4,5-tetrazine Chemical compound N1=C(C)C=C(C)N1C1=NN=C(N2C(=CC(C)=N2)C)N=N1 FPKOARNUITZHCF-UHFFFAOYSA-N 0.000 claims description 2
- WBVSZPHBBYURDY-UHFFFAOYSA-N 3,6-bis(furan-2-yl)-1,2,4,5-tetrazine Chemical compound C1=COC(C=2N=NC(=NN=2)C=2OC=CC=2)=C1 WBVSZPHBBYURDY-UHFFFAOYSA-N 0.000 claims description 2
- XAUWSIIGUUMHQQ-UHFFFAOYSA-N 3,6-diphenyl-1,2,4,5-tetrazine Chemical compound C1=CC=CC=C1C1=NN=C(C=2C=CC=CC=2)N=N1 XAUWSIIGUUMHQQ-UHFFFAOYSA-N 0.000 claims description 2
- LPBCTXJGOILQDR-UHFFFAOYSA-N 3,6-dithiophen-2-yl-1,2,4,5-tetrazine Chemical compound C1=CSC(C=2N=NC(=NN=2)C=2SC=CC=2)=C1 LPBCTXJGOILQDR-UHFFFAOYSA-N 0.000 claims description 2
- ALKYHXVLJMQRLQ-UHFFFAOYSA-N 3-Hydroxy-2-naphthoate Chemical compound C1=CC=C2C=C(O)C(C(=O)O)=CC2=C1 ALKYHXVLJMQRLQ-UHFFFAOYSA-N 0.000 claims description 2
- ASUZTNLCAHONDF-UHFFFAOYSA-N 3-methyl-6-pyridin-2-yl-1,2,4,5-tetrazine Chemical compound N1=NC(C)=NN=C1C1=CC=CC=N1 ASUZTNLCAHONDF-UHFFFAOYSA-N 0.000 claims description 2
- 229910018072 Al 2 O 3 Inorganic materials 0.000 claims description 2
- 229910052582 BN Inorganic materials 0.000 claims description 2
- PZNSFCLAULLKQX-UHFFFAOYSA-N Boron nitride Chemical compound N#B PZNSFCLAULLKQX-UHFFFAOYSA-N 0.000 claims description 2
- 125000003172 aldehyde group Chemical group 0.000 claims description 2
- 125000001931 aliphatic group Chemical group 0.000 claims description 2
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 2
- 125000003277 amino group Chemical group 0.000 claims description 2
- 125000002029 aromatic hydrocarbon group Chemical group 0.000 claims description 2
- ALHNLFMSAXZKRC-UHFFFAOYSA-N benzene-1,4-dicarbohydrazide Chemical compound NNC(=O)C1=CC=C(C(=O)NN)C=C1 ALHNLFMSAXZKRC-UHFFFAOYSA-N 0.000 claims description 2
- 125000002915 carbonyl group Chemical group [*:2]C([*:1])=O 0.000 claims description 2
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 claims description 2
- CPOMHYIJGJUENL-UHFFFAOYSA-N chembl1401717 Chemical compound C1=CC(O)=CC=C1C1=NN=C(C=2C=CC(O)=CC=2)N=N1 CPOMHYIJGJUENL-UHFFFAOYSA-N 0.000 claims description 2
- 238000007599 discharging Methods 0.000 claims description 2
- GRGBENNNGZARRZ-UHFFFAOYSA-N dodecanedihydrazide Chemical compound NNC(=O)CCCCCCCCCCC(=O)NN GRGBENNNGZARRZ-UHFFFAOYSA-N 0.000 claims description 2
- 125000002887 hydroxy group Chemical group [H]O* 0.000 claims description 2
- 238000000034 method Methods 0.000 claims description 2
- CMAUJSNXENPPOF-UHFFFAOYSA-N n-(1,3-benzothiazol-2-ylsulfanyl)-n-cyclohexylcyclohexanamine Chemical compound C1CCCCC1N(C1CCCCC1)SC1=NC2=CC=CC=C2S1 CMAUJSNXENPPOF-UHFFFAOYSA-N 0.000 claims description 2
- DEQZTKGFXNUBJL-UHFFFAOYSA-N n-(1,3-benzothiazol-2-ylsulfanyl)cyclohexanamine Chemical compound C1CCCCC1NSC1=NC2=CC=CC=C2S1 DEQZTKGFXNUBJL-UHFFFAOYSA-N 0.000 claims description 2
- 239000002135 nanosheet Substances 0.000 claims description 2
- 239000002071 nanotube Substances 0.000 claims description 2
- 239000004408 titanium dioxide Substances 0.000 claims description 2
- VTHOKNTVYKTUPI-UHFFFAOYSA-N triethoxy-[3-(3-triethoxysilylpropyltetrasulfanyl)propyl]silane Chemical compound CCO[Si](OCC)(OCC)CCCSSSSCCC[Si](OCC)(OCC)OCC VTHOKNTVYKTUPI-UHFFFAOYSA-N 0.000 claims description 2
- BPSIOYPQMFLKFR-UHFFFAOYSA-N trimethoxy-[3-(oxiran-2-ylmethoxy)propyl]silane Chemical compound CO[Si](OC)(OC)CCCOCC1CO1 BPSIOYPQMFLKFR-UHFFFAOYSA-N 0.000 claims description 2
- 235000014692 zinc oxide Nutrition 0.000 claims description 2
- 239000003963 antioxidant agent Substances 0.000 claims 3
- 230000003078 antioxidant effect Effects 0.000 claims 3
- ZZMVLMVFYMGSMY-UHFFFAOYSA-N 4-n-(4-methylpentan-2-yl)-1-n-phenylbenzene-1,4-diamine Chemical compound C1=CC(NC(C)CC(C)C)=CC=C1NC1=CC=CC=C1 ZZMVLMVFYMGSMY-UHFFFAOYSA-N 0.000 claims 1
- 239000000463 material Substances 0.000 abstract description 10
- 230000020169 heat generation Effects 0.000 abstract description 6
- 230000035929 gnawing Effects 0.000 abstract description 5
- 230000000052 comparative effect Effects 0.000 description 14
- 238000011156 evaluation Methods 0.000 description 8
- 238000009472 formulation Methods 0.000 description 5
- 239000011159 matrix material Substances 0.000 description 5
- 238000003776 cleavage reaction Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 230000007017 scission Effects 0.000 description 4
- 239000002131 composite material Substances 0.000 description 3
- 230000035882 stress Effects 0.000 description 3
- 230000032683 aging Effects 0.000 description 2
- 239000004020 conductor Substances 0.000 description 2
- 230000032798 delamination Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 239000002174 Styrene-butadiene Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000001186 cumulative effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000004513 sizing Methods 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 238000004073 vulcanization Methods 0.000 description 1
Classifications
-
- 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
- C08L9/06—Copolymers with styrene
-
- 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
- C08K3/38—Boron-containing compounds
- C08K2003/382—Boron-containing compounds and nitrogen
- C08K2003/385—Binary compounds of nitrogen with boron
-
- 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
Landscapes
- 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 discloses a tread rubber composition of an engineering tire, and a preparation method and application thereof, and belongs to the technical field of engineering tires. The formula of the rubber compound comprises the following components in parts by weight: 0 to 100 parts of styrene-butadiene rubber, 100 to 0 part of natural rubber, 10 to 65 parts of carbon black, 5 to 55 parts of white carbon black, 0 to 10 parts of silane coupling agent, 1 to 10 parts of zinc oxide, 1 to 5 parts of stearic acid, 0 to 4 parts of microcrystalline wax, 1 to 8 parts of anti-aging agent, 0.5 to 12 parts of heat radiation filler, 0.2 to 6 parts of low heat generating agent, 0.1 to 6 parts of anti-cutting agent, 0.1 to 5 parts of sulfur and 0.1 to 6 parts of accelerator. According to the engineering tire tread rubber composition, the heat conduction, heat dissipation, cutting resistance, gnawing resistance, chipping resistance, fatigue resistance and other performances of the rubber material are effectively improved through the addition of the heat dissipation filler, the low heat generating agent and the cutting resistance agent, the dynamic heat generation of the rubber material is very low, and the physical and mechanical properties required by the rubber material are not influenced.
Description
Technical Field
The invention belongs to the technical field of engineering tires, and particularly relates to an engineering tire tread rubber composition, a preparation method and application thereof.
Background
The disclosure of this background section is only intended to increase the understanding of the general background of the invention and is not necessarily to be construed as an admission or any form of suggestion that this information forms the prior art already known to those of ordinary skill in the art.
The engineering machinery tyre has the characteristics of complex operation environment, harsh operation condition, large load, continuous operation of the vehicle and the like, so that the tyre tread is required to resist cutting, fatigue, chipping and blocking, heat resistance, gnawing and the like. Moreover, because the thickness of the tire body and the tread is large, the pattern blocks are large, the heat dissipation performance is poor, and heat is continuously accumulated, so that the temperature of the shoulder buffer layer and the tread position of the tire is overhigh, the fatigue and aging of the rubber material are accelerated, the delamination of the tire is easily caused, and the service life of the tire is seriously influenced.
In order to meet the special requirements of the engineering machinery tyre, the tyre workers generally adopt the following technical means: NR and SBR are used in combination in a raw rubber system of the tread rubber, and carbon black is mainly N220 or N234; thus, although the performance requirements of cutting resistance, chipping resistance, gnawing resistance and the like of the tread are improved, the heat generation of the rubber is very high, the rubber is a hot bad conductor, the tread is thick, the pattern blocks are large and deep, a large amount of heat is accumulated in the rubber system, the thermo-oxidative aging of the rubber is accelerated, and the occurrence of phenomena such as crown air, shoulder air and the like is caused.
On the other hand, in order to improve the heat conduction problem of the tread formula sizing system, a large number of tire workers adopt to add heat conduction fillers such as aluminum oxide, zinc oxide and the like. However, in order to achieve the ideal heat conduction effect in the rubber matrix, a large amount of the heat conduction filler is required, and the dispersibility of the inorganic heat conduction filler in the rubber matrix is poor, so that the heat conduction performance is improved, but the physical and mechanical properties such as tensile strength, stretching stress, breaking elongation and the like of the rubber composite material are obviously reduced, and the service performance of the tire is seriously affected.
Disclosure of Invention
In order to solve the defects of the prior art, the invention aims to provide the engineering tire tread rubber composition, the preparation method and the application thereof, and the tire tread manufactured by using the engineering tire tread rubber composition has the advantages of strong mechanical property, cutting resistance, gnawing resistance, chipping resistance, block falling resistance, fatigue resistance and the like, low heat generation of rubber materials, excellent durability and effectively prolonged service life of the tire.
In order to achieve the above purpose, the technical scheme of the invention is as follows:
the invention provides a tread rubber composition for an engineering tire, which comprises the following components in parts by weight: 0 to 100 parts of styrene-butadiene rubber, 100 to 0 part of natural rubber, 10 to 65 parts of carbon black, 5 to 55 parts of white carbon black, 0 to 10 parts of silane coupling agent, 1 to 10 parts of zinc oxide, 1 to 5 parts of stearic acid, 0 to 4 parts of microcrystalline wax, 1 to 8 parts of anti-aging agent, 0.5 to 12 parts of heat radiation filler, 0.2 to 6 parts of low heat generating agent, 0.1 to 6 parts of anti-cutting agent, 0.1 to 5 parts of sulfur and 0.1 to 6 parts of accelerator;
the low heat generating agent is one or more of dodecanedioic acid dihydrazide, 2-hydroxy-3-naphthoic acid dihydrazide, terephthalic acid dihydrazide and 2-hydroxy-N' - (1-methylbutyl) -3-naphthoic acid dihydrazide.
The low heat generating agent of the present invention has the following effects:
(1) the polar groups on the surfaces of the carbon black and the white carbon black interact with each other, so that the dispersion of the carbon black and the white carbon black in rubber is promoted, the friction between a filler and the filler and between the filler and the rubber is reduced, the Payne effect of the filler is reduced, and the heat generation is greatly reduced; (2) and the reaction is carried out on the rubber terminal molecular chain, so that the number of terminal small molecular chains is reduced, and hysteresis loss caused by small molecular chain sliding is reduced.
The anti-cutting agent is a tetrazine compound, and the structural formula is as follows:
r1 and R2 represent C1-C30 aliphatic hydrocarbon groups or aromatic hydrocarbon groups optionally substituted with one or more of C1-C20 alkyl groups, hydroxyl groups, carbonyl groups, aldehyde groups, carboxyl groups and amino groups.
Preferably, in some embodiments of the present invention, the cleavage resistant agent comprises 3, 6-bis (4-hydroxyphenyl) -1,2,4, 5-tetrazine, 3-methyl-6- (2-pyridyl) -1,2,4, 5-tetrazine, 3, 6-diphenyl-1, 2,4, 5-tetrazine, 3, 6-bis (2-furyl) -1,2,4, 5-tetrazine, 3, 6-bis (3, 5-dimethyl-1-pyrazolyl) -1,2,4, 5-tetrazine, 3, 6-bis (2-thienyl) -1,2,4, 5-tetrazine, and the like.
The anti-cutting agent has the following functions:
and the modified rubber material reacts with rubber molecular chains, and the tail ends of the rubber molecular chains are modified, so that the interaction between rubber and filler is improved, and the excellent cutting resistance of the rubber composite material is realized.
In some embodiments of the present invention, the engineering tire tread rubber composition comprises the following components in parts by weight: 100 parts of styrene-butadiene rubber, 25-60 parts of carbon black, 5-38 parts of white carbon black, 0.5-5 parts of silane coupling agent, 2-6 parts of zinc oxide, 1-3 parts of stearic acid, 0.5-3.5 parts of microcrystalline wax, 1-6.5 parts of anti-aging agent, 0.5-12 parts of heat radiation filler, 0.2-5 parts of low heat generating agent, 0.1-3 parts of anti-cutting agent, 0.1-5 parts of sulfur and 0.1-6 parts of accelerator.
In some embodiments of the present invention, the silane coupling agent is one or two of bis- (gamma-triethoxysilylpropyl) tetrasulfide, 3-Xin Xianliu-yl-1-propyltriethoxysilane, and 3-glycidoxypropyl trimethoxysilane.
In some embodiments of the present invention, the anti-aging agent is two or more of anti-aging agent RD, anti-aging agent 4020, and anti-aging agent DTPD.
In some embodiments of the invention, the accelerator is one or more of accelerator NS, accelerator CZ, accelerator DZ, accelerator DM and accelerator DPG 80.
In some embodiments of the present invention, the heat dissipation filler is titanium dioxide nanotube modified graphene TNTs@GO and aluminum oxide modified graphene Al 2 O 3 Modified carbon nano tube Al of @ GO and alumina 2 O 3 Modified hexagonal boron nitride nanosheet Si reinforced by@CNTs, silicon nitride whiskers and silicon nitride whiskers 3 N 4 One of @ HBN.
The main function of the heat radiation filler in the invention is to improve the heat conduction property of the rubber composition.
As described in the background art, the engineering tread has large thickness and large pattern blocks, rubber is a hot bad conductor, the heat dissipation performance is poor, the heat is continuously accumulated to enable the tread to have overhigh temperature, the rubber material is tired and aged to accelerate, the tire delamination is extremely easy to be caused, and the service life of the tire is seriously influenced. In order to improve the heat conduction problem of the tread, the prior art generally adopts the addition of heat conduction fillers such as aluminum oxide, zinc oxide and the like. However, in order to achieve the ideal heat conduction effect in the rubber matrix, a larger addition amount is required, and the dispersibility of the inorganic heat conduction filler in the rubber matrix is poor, so that the heat conduction performance is improved, but the physical and mechanical properties of the rubber composite material are obviously reduced, and the service performance of the tire is seriously affected.
The heat radiation filler has the advantages that firstly, the nano filler has higher heat conduction performance; secondly, in morphology, the multidimensional combination of the one-dimensional nano filler and the two-dimensional nano filler is realized, so that a more effective heat conduction network passage can be formed inside the rubber matrix, and finally, the satisfactory high heat conduction performance of the rubber composition is realized.
In a second aspect of the present invention, there is provided a method for preparing the above-mentioned engineering tire tread rubber composition, comprising the steps of:
s1, one-stage mixing: the rotating speed of the rotor is 35-50 rpm, and the upper bolt pressure is 5.5Mpa; adding styrene-butadiene rubber, part of carbon black, a low heat generating agent and a cutting resistant agent into an internal mixer, mixing for 20-50 seconds, then lifting bolts, pressing bolts, mixing for 20-50 seconds, keeping lifting bolts for 5-20 seconds, pressing bolts, mixing until the temperature is 140-170 ℃ for rubber discharge, standing for 4-8 hours at room temperature to obtain a primary master batch, and then carrying out secondary mixing on the primary master batch;
s2, two-stage mixing: the rotating speed of the rotor is 35-50 rpm, and the upper bolt pressure is 5.5Mpa; adding a first-stage masterbatch, residual carbon black, white carbon black, a silane coupling agent, zinc oxide, stearic acid, microcrystalline wax, an anti-aging agent and a heat radiation filler into an internal mixer, mixing for 20-50 seconds, lifting bolts, pressing the bolts, mixing for 20-50 seconds, keeping the lifting bolts for 5-20 seconds, pressing the bolts, mixing to 140-170 ℃ for rubber discharge, standing for 4-8 hours to obtain a second-stage masterbatch, and then carrying out final mixing;
s3, final refining: the rotation speed of the rotor is 15-35 rpm, the upper ram pressure is 4.5Mpa, the two-stage master batch, sulfur and accelerator are added into an internal mixer, the mixing is carried out for 30-55 seconds, the ram is lifted, the ram is pressed, the mixing is carried out for 25-55 seconds, the ram is lifted, the ram is pressed, and the mixing is carried out until the temperature reaches 95-120 ℃ for rubber discharging, thus obtaining the engineering tire tread rubber composition.
In a third aspect of the present invention, there is provided the use of the above-described engineering tire tread rubber composition in an engineering tire tread.
In a fourth aspect of the present invention, there is provided an engineering tire, wherein the tread rubber of the engineering tire is obtained by vulcanizing the tread rubber composition of the engineering tire.
The beneficial effects of the invention are as follows:
1. the high-performance engineering tire tread rubber composition provided by the invention effectively improves the heat conduction and heat dissipation properties of the rubber material, and has no influence on the physical and mechanical properties (such as tensile stress, tensile strength, tensile elongation and the like) required by the rubber material.
2. The high-performance engineering tire tread rubber composition provided by the invention effectively improves the cutting resistance, the gnawing resistance, the chipping resistance, the block falling resistance, the fatigue resistance and other performances of the engineering machinery tire tread rubber, and the dynamic heat generation of the rubber material is very low.
3. The tire manufactured by the engineering tire tread rubber composition has very excellent durability, and the service life of the tire is effectively prolonged.
Detailed Description
In order to enable those skilled in the art to more clearly understand the technical scheme of the present invention, the technical scheme of the present invention will be described in detail with reference to specific embodiments.
The raw materials selected by the invention are all commercial products unless specified, such as:
example 1
The rubber composition for the engineering tire tread comprises the following components in parts by weight in a formula shown in table 1.
Table 1 engineering tire tread rubber composition rubber compound formulation in example 1
The preparation method comprises the following steps:
1) And (3) mixing: the rotation speed of a rotor is 45rpm, the upper plug pressure is 5.5Mpa, the styrene-butadiene rubber, part of carbon black, the low heat generating agent, the anti-cutting agent and the anti-cutting agent are added into an internal mixer to be mixed for 40 seconds, then the plug is lifted, the plug is pressed and mixed for 35 seconds, the plug is lifted and kept for 10 seconds, the plug is pressed, and the mixture is mixed to 170 ℃ to discharge rubber, so that a section of master batch is obtained. And (5) parking for 4 hours for standby.
2) Two-stage mixing: the rotation speed of a rotor is 45rpm, the upper plug pressure is 5.5Mpa, the primary master batch, the residual carbon black, the white carbon black, the silane coupling agent, the zinc oxide, the stearic acid, the microcrystalline wax, the anti-aging agent and the heat radiation filler are added into an internal mixer to be mixed for 35 seconds, the plug is lifted, then the plug is pressed, the mixing is carried out for 35 seconds, the plug lifting is kept for 15 seconds, the plug is pressed, and the mixing is carried out until the temperature reaches 165 ℃ to discharge the rubber, so that the secondary master batch is obtained. And parking for 8 hours for standby.
3) And (3) final refining: the rotation speed of a rotor is 30rpm, the upper ram pressure is 4.5Mpa, two-stage master batch, sulfur and accelerator are added into an internal mixer, mixed for 40 seconds, lifted and pressed, mixed for 35 seconds, lifted and pressed, mixed until the temperature of 105 ℃ is 105 ℃ for rubber discharge, and the tire tread rubber composition rubber compound is obtained.
Example 2
The rubber composition for the engineering tire tread comprises the following components in parts by weight in a formula shown in Table 2.
Table 2 engineering tire tread rubber composition rubber compound formulation in example 2
The cleavage resistant agent was of the same type as in example 1.
The preparation method is the same as in example 1.
Example 3
The rubber composition for the engineering tire tread comprises the following components in parts by weight, and the formula of the rubber compound is shown in Table 3.
Table 3 engineering tire tread rubber composition rubber compound formulation in example 3
The cleavage resistant agent was of the same type as in example 1.
The preparation method is the same as in example 1.
Example 4
The rubber composition for the engineering tire tread comprises the following components in parts by weight in a formula shown in Table 4.
Table 4 engineering tire tread rubber composition rubber compound formulation in example 4
The cleavage resistant agent was of the same type as in example 1.
The preparation method is the same as in example 1.
Comparative example 1
The rubber composition for the engineering tire tread comprises the following components in parts by weight in a formula shown in Table 5.
Table 5 engineering tire tread rubber composition rubber compound formulation in comparative example 1
| Styrene-butadiene rubber | 100 parts of |
| Carbon black N220 | 46 parts of |
| White carbon black | 18 parts of |
| 3-Xin Xianliu base-1-propyltriethoxysilane | 3.6 parts of |
| Zinc oxide | 3.5 parts |
| Stearic acid | 2 parts of |
| Microcrystalline wax | 1.5 parts by weight |
| Anti-aging agent RD | 2 parts of |
| Anti-aging agent 4020 | 2 parts of |
| Sulfur, sulfur and its preparation method | 1.6 parts of |
| Accelerator NS | 1.9 parts of |
The preparation method is the same as in example 1.
Evaluation of mechanical Properties
The stress at definite elongation is tested according to GB/T528-2009; tensile properties were tested according to GB/T528-2009; tear properties were tested according to GB/T528-2008. The values of examples 1 to 4 and comparative example 1 are each represented by an index, and the values of elongation at break, tensile strength, tear strength and elongation at break of comparative example 1 are set to 100.
Evaluation of cut resistance
The cut-resistant test is carried out by using GT-7012-Q provided by high-speed rail detection instrument Co, and the final sample volume loss is calculated by using the initial and final quality differences of the sample and the sample density. The values of examples 1-4 and comparative example 1 are each expressed as an index, and the cut resistance value of comparative example 1 is set to 100. The smaller the value, the better the cut resistance.
Evaluation of Heat buildup
Setting the RPA test condition as the temperature of 151 ℃, the frequency of 1.67HZ and the strain of 7%, and stabilizing for 5min after reaching the condition; placing the sample into a die cavity for vulcanization for 60min; the temperature was then reduced to 60℃and tested at a frequency of 10HZ and strain of 7%. The values of examples 1-4 and comparative example 1 are each represented by an index, and the tan delta value of comparative example 1 is set to 100. The smaller the value, the lower the heat generation.
Evaluation of Heat conducting Property
The test was performed according to GB/T11205-2009. The values of examples 1-4 and comparative example 1 are each expressed as an index, and the thermal conductivity value of comparative example 1 is set to 100. The larger the value is, the higher the thermal conductivity is, and the better the thermal conductivity and the heat dissipation performance are.
Evaluation of durability
According to the GB/T4501 truck tire performance indoor test method, the rim accords with the size specified by GB/T2977, the air pressure is based on the air pressure corresponding to the maximum rated load of a single tire, and the inflated test tire and rim combination is parked for at least 3 hours in the environment of 38+/-3 ℃. The values of examples 1-4 and comparative example 1 are each represented by an index, and the cumulative travel time of comparative example 1 is set to 100. The larger the value, the better the durability.
The results of each performance evaluation are shown in Table 6.
TABLE 6 Properties of the engineering tire Tread rubber compositions obtained in examples 1-4 and comparative example 1
| Example 1 | Example 2 | Example 3 | Example 4 | Comparative example 1 | |
| 300% definite elongation | 107 | 102 | 108 | 105 | 100 |
| Tensile Strength | 112 | 110 | 116 | 105 | 100 |
| Elongation at break | 112 | 109 | 111 | 108 | 100 |
| Tear strength | 111 | 106 | 113 | 104 | 100 |
| Cutting resistance | 91 | 80 | 82 | 94 | 100 |
| Tanδ(60℃) | 68 | 62 | 68 | 71 | 100 |
| Evaluation of Heat conducting Property | 129 | 121 | 138 | 114 | 100 |
| Evaluation of durability | 122 | 117 | 119 | 111 | 100 |
The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The engineering tire tread rubber composition is characterized in that a rubber compound formula comprises the following components in parts by weight: 0 to 100 parts of styrene-butadiene rubber, 100 to 0 part of natural rubber, 10 to 65 parts of carbon black, 5 to 55 parts of white carbon black, 0 to 10 parts of silane coupling agent, 1 to 10 parts of zinc oxide, 1 to 5 parts of stearic acid, 0 to 4 parts of microcrystalline wax, 1 to 8 parts of anti-aging agent, 0.5 to 12 parts of heat radiation filler, 0.2 to 6 parts of low heat generating agent, 0.1 to 6 parts of anti-cutting agent, 0.1 to 5 parts of sulfur and 0.1 to 6 parts of accelerator;
the low heat generating agent is one or more of dodecanedioic acid dihydrazide, 2-hydroxy-3-naphthoic acid dihydrazide, terephthalic acid dihydrazide and 2-hydroxy-N' - (1-methylbutyl) -3-naphthoic acid dihydrazide.
The anti-cutting agent is a tetrazine compound, and the structural formula is as follows:
r1 and R2 represent C1-C30 aliphatic hydrocarbon groups or aromatic hydrocarbon groups optionally substituted with one or more of C1-C20 alkyl groups, hydroxyl groups, carbonyl groups, aldehyde groups, carboxyl groups and amino groups.
2. The engineering tire tread rubber composition of claim 1, wherein the engineering tire tread rubber composition comprises the following components in parts by weight: 100 parts of styrene-butadiene rubber, 25-60 parts of carbon black, 5-38 parts of white carbon black, 0.5-5 parts of silane coupling agent, 2-6 parts of zinc oxide, 1-3 parts of stearic acid, 0.5-3.5 parts of microcrystalline wax, 1-6.5 parts of anti-aging agent, 0.5-12 parts of heat radiation filler, 0.2-5 parts of low heat generating agent, 0.1-3 parts of anti-cutting agent, 0.1-5 parts of sulfur and 0.1-6 parts of accelerator.
3. The engineered tire tread rubber composition of claim 1, wherein the cut-resistant agent comprises 3, 6-bis (4-hydroxyphenyl) -1,2,4, 5-tetrazine, 3-methyl-6- (2-pyridyl) -1,2,4, 5-tetrazine, 3, 6-diphenyl-1, 2,4, 5-tetrazine, 3, 6-bis (2-furyl) -1,2,4, 5-tetrazine, 3, 6-bis (3, 5-dimethyl-1-pyrazolyl) -1,2,4, 5-tetrazine, or 3, 6-bis (2-thienyl) -1,2,4, 5-tetrazine.
4. The engineering tire tread rubber composition of claim 1, wherein the silane coupling agent is one or two of bis- (gamma-triethoxysilylpropyl) tetrasulfide, 3-Xin Xianliu-yl-1-propyltriethoxysilane and 3-glycidoxypropyl trimethoxysilane.
5. The engineering tire tread rubber composition as claimed in claim 1, wherein the antioxidant is used in combination of two or more of an antioxidant RD, an antioxidant 4020 and an antioxidant DTPD.
6. The engineered tire tread rubber composition of claim 1, wherein the accelerator is one or more of accelerator NS, accelerator CZ, accelerator DZ, accelerator DM, and accelerator DPG 80.
7. The engineering tire tread rubber composition according to claim 1, wherein the heat dissipation filler is titanium dioxide nanotube modified graphene TNTs@GO, aluminum oxide modified graphene Al 2 O 3 Modified carbon nano tube Al of @ GO and alumina 2 O 3 Modified hexagonal boron nitride nanosheet Si reinforced by@CNTs, silicon nitride whiskers and silicon nitride whiskers 3 N 4 One of @ HBN.
8. A method of preparing an engineering tire tread rubber composition as in claim 1, comprising the steps of:
s1, one-stage mixing: the rotating speed of the rotor is 35-50 rpm, and the upper bolt pressure is 5.5Mpa; adding styrene-butadiene rubber, part of carbon black, a low heat generating agent and a cutting resistant agent into an internal mixer, mixing for 20-50 seconds, then lifting bolts, pressing bolts, mixing for 20-50 seconds, keeping lifting bolts for 5-20 seconds, pressing bolts, mixing until the temperature is 140-170 ℃ for rubber discharge, standing for 4-8 hours at room temperature to obtain a primary master batch, and then carrying out secondary mixing on the primary master batch;
s2, two-stage mixing: the rotating speed of the rotor is 35-50 rpm, and the upper bolt pressure is 5.5Mpa; adding a first-stage masterbatch, residual carbon black, white carbon black, a silane coupling agent, zinc oxide, stearic acid, microcrystalline wax, an anti-aging agent and a heat radiation filler into an internal mixer, mixing for 20-50 seconds, lifting bolts, pressing the bolts, mixing for 20-50 seconds, keeping the lifting bolts for 5-20 seconds, pressing the bolts, mixing to 140-170 ℃ for rubber discharge, standing for 4-8 hours to obtain a second-stage masterbatch, and then carrying out final mixing;
s3, final refining: the rotation speed of the rotor is 15-35 rpm, the upper ram pressure is 4.5Mpa, the two-stage master batch, sulfur and accelerator are added into an internal mixer, the mixing is carried out for 30-55 seconds, the ram is lifted, the ram is pressed, the mixing is carried out for 25-55 seconds, the ram is lifted, the ram is pressed, and the mixing is carried out until the temperature reaches 95-120 ℃ for rubber discharging, thus obtaining the engineering tire tread rubber composition.
9. Use of the engineering tire tread rubber composition of any of claims 1-7 in an engineering tire tread.
10. An engineering tire, wherein the tread rubber of the engineering tire is obtained by vulcanizing the tread rubber composition of the engineering tire according to any one of claims 1 to 6.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117866301A (en) * | 2024-03-12 | 2024-04-12 | 潍坊顺福昌橡塑有限公司 | Shoulder pad rubber material for all-steel radial tire and preparation method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117866301A (en) * | 2024-03-12 | 2024-04-12 | 潍坊顺福昌橡塑有限公司 | Shoulder pad rubber material for all-steel radial tire and preparation method thereof |
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