CN115353676B - Rubber composition with low silane coupling agent dosage, mixing method thereof and tire - Google Patents
Rubber composition with low silane coupling agent dosage, mixing method thereof and tire Download PDFInfo
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- CN115353676B CN115353676B CN202211127973.2A CN202211127973A CN115353676B CN 115353676 B CN115353676 B CN 115353676B CN 202211127973 A CN202211127973 A CN 202211127973A CN 115353676 B CN115353676 B CN 115353676B
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- 229920001971 elastomer Polymers 0.000 title claims abstract description 58
- 239000005060 rubber Substances 0.000 title claims abstract description 58
- 239000006087 Silane Coupling Agent Substances 0.000 title claims abstract description 45
- 239000000203 mixture Substances 0.000 title claims abstract description 33
- 238000002156 mixing Methods 0.000 title claims abstract description 12
- 238000000034 method Methods 0.000 title claims abstract description 10
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 28
- 239000006229 carbon black Substances 0.000 claims abstract description 26
- 239000000463 material Substances 0.000 claims abstract description 26
- 229910021332 silicide Inorganic materials 0.000 claims abstract description 13
- FVBUAEGBCNSCDD-UHFFFAOYSA-N silicide(4-) Chemical compound [Si-4] FVBUAEGBCNSCDD-UHFFFAOYSA-N 0.000 claims abstract description 13
- 239000002994 raw material Substances 0.000 claims abstract description 4
- 150000003377 silicon compounds Chemical class 0.000 claims abstract description 3
- 238000003825 pressing Methods 0.000 claims description 26
- 238000004513 sizing Methods 0.000 claims description 17
- 239000006057 Non-nutritive feed additive Substances 0.000 claims description 14
- 239000003795 chemical substances by application Substances 0.000 claims description 12
- 239000003292 glue Substances 0.000 claims description 10
- 238000007599 discharging Methods 0.000 claims description 9
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 8
- 239000004594 Masterbatch (MB) Substances 0.000 claims description 8
- VBICKXHEKHSIBG-UHFFFAOYSA-N 1-monostearoylglycerol Chemical compound CCCCCCCCCCCCCCCCCC(=O)OCC(O)CO VBICKXHEKHSIBG-UHFFFAOYSA-N 0.000 claims description 6
- 230000003712 anti-aging effect Effects 0.000 claims description 6
- 239000004014 plasticizer Substances 0.000 claims description 6
- 229920003048 styrene butadiene rubber Polymers 0.000 claims description 6
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims description 4
- 239000013543 active substance Substances 0.000 claims description 4
- 238000001816 cooling Methods 0.000 claims description 4
- 238000010438 heat treatment Methods 0.000 claims description 4
- 229910052757 nitrogen Inorganic materials 0.000 claims description 4
- 238000007670 refining Methods 0.000 claims description 4
- 238000001179 sorption measurement Methods 0.000 claims description 4
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims description 3
- 229920002857 polybutadiene Polymers 0.000 claims description 3
- 229910052717 sulfur Inorganic materials 0.000 claims description 3
- 239000011593 sulfur Substances 0.000 claims description 3
- 244000043261 Hevea brasiliensis Species 0.000 claims description 2
- 235000021355 Stearic acid Nutrition 0.000 claims description 2
- 150000004945 aromatic hydrocarbons Chemical class 0.000 claims description 2
- 229920005549 butyl rubber Polymers 0.000 claims description 2
- 235000014113 dietary fatty acids Nutrition 0.000 claims description 2
- 239000000839 emulsion Substances 0.000 claims description 2
- 239000000194 fatty acid Substances 0.000 claims description 2
- 229930195729 fatty acid Natural products 0.000 claims description 2
- 125000005456 glyceride group Chemical class 0.000 claims description 2
- 229920005555 halobutyl Polymers 0.000 claims description 2
- 150000004668 long chain fatty acids Chemical class 0.000 claims description 2
- 239000004200 microcrystalline wax Substances 0.000 claims description 2
- 235000019808 microcrystalline wax Nutrition 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
- 229920003052 natural elastomer Polymers 0.000 claims description 2
- 229920001194 natural rubber Polymers 0.000 claims description 2
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 claims description 2
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 claims description 2
- 239000003921 oil Substances 0.000 claims description 2
- 229920001195 polyisoprene Polymers 0.000 claims description 2
- 239000008117 stearic acid Substances 0.000 claims description 2
- 239000011787 zinc oxide Substances 0.000 claims description 2
- 239000003963 antioxidant agent Substances 0.000 claims 2
- 230000003078 antioxidant effect Effects 0.000 claims 2
- 150000004665 fatty acids Chemical class 0.000 claims 1
- 229940075507 glyceryl monostearate Drugs 0.000 claims 1
- 238000004898 kneading Methods 0.000 claims 1
- 239000001788 mono and diglycerides of fatty acids Substances 0.000 claims 1
- 239000000377 silicon dioxide Substances 0.000 claims 1
- 150000003751 zinc Chemical class 0.000 claims 1
- 238000005096 rolling process Methods 0.000 abstract description 8
- 239000006185 dispersion Substances 0.000 abstract description 7
- 230000009467 reduction Effects 0.000 abstract description 4
- 230000007547 defect Effects 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 230000000052 comparative effect Effects 0.000 description 8
- 230000020169 heat generation Effects 0.000 description 4
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 description 3
- 229910000077 silane Inorganic materials 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- KAKZBPTYRLMSJV-UHFFFAOYSA-N Butadiene Chemical compound C=CC=C KAKZBPTYRLMSJV-UHFFFAOYSA-N 0.000 description 2
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 2
- YQEMORVAKMFKLG-UHFFFAOYSA-N glycerine monostearate Natural products CCCCCCCCCCCCCCCCCC(=O)OC(CO)CO YQEMORVAKMFKLG-UHFFFAOYSA-N 0.000 description 2
- SVUQHVRAGMNPLW-UHFFFAOYSA-N glycerol monostearate Natural products CCCCCCCCCCCCCCCCC(=O)OCC(O)CO SVUQHVRAGMNPLW-UHFFFAOYSA-N 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000002372 labelling Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 230000002787 reinforcement Effects 0.000 description 2
- 150000001298 alcohols Chemical class 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- -1 fatty acid zinc salts Chemical class 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 238000006884 silylation reaction Methods 0.000 description 1
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 1
- 229920002554 vinyl polymer Polymers 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
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B7/00—Mixing; Kneading
- B29B7/002—Methods
- B29B7/005—Methods for mixing in batches
-
- 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
-
- 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)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention relates to the technical field of new materials for manufacturing tires, in particular to a rubber composition with low silane coupling agent consumption, a mixing method thereof and a tire. The rubber composition with low silane coupling agent consumption is prepared by mixing the following raw materials: 100 parts of rubber component, 70-90 parts of white carbon black component, 2.0-5.8 parts of silane coupling agent component and 1-6 parts of functional silicon compound. The composition reduces the usage amount of the silane coupling agent by the method, and simultaneously overcomes the defects of poor white carbon black dispersion, poor wet grip performance and high rolling resistance caused by the reduction of the silane coupling agent by adding the functional silicide, so that the rubber composition ensures excellent wet grip performance and rolling resistance performance under the condition of low usage amount of the silane coupling agent.
Description
Technical Field
The invention relates to the technical field of new materials for manufacturing tires, in particular to a rubber composition with low silane coupling agent consumption, a mixing method thereof and a tire.
Background
The invention of the automobile greatly facilitates the life of people. With the rapid development of the automobile industry, the field of automobile parts is rapidly improved and innovated. Tires are important parts of automobiles and play an extremely important role throughout the life of an automobile.
In europe, the tire labeling method was started in 2009, and then, respective labeling methods are also introduced in the united states, the japanese, the korean, and the middle countries. Under the holding of a label method, the requirements on the rolling resistance performance and the wet grip performance of the tire are more severe. The white carbon black reinforcement can better balance the rolling resistance and the wet grip performance of the tire, so that the white carbon black reinforcement is favored by more tire enterprises. Because of the strong polar groups on the surface of the white carbon black, the white carbon black is difficult to be well dispersed with rubber, and the surface modification is usually carried out by adopting a method of adding a silane coupling agent so as to solve the problem.
At present, the most commonly used silane coupling agents in the tire industry are sulfur-containing silane Si-69 and Si-75, and although novel silane coupling agents such as Si-747 and NXT are researched and developed in recent years, the silane coupling agents with the most wide application in the tire industry are Si-69 and Si-75 due to cost and the like. In the process of the silylation reaction of Si-69 and Si-75, alcohols are generated, which can pollute the environment, and the cost of NXT and Si-747 is too high, so that from the aspects of protecting the environment and reducing the cost, how to reduce the dosage of the silane coupling agent while ensuring the performance becomes the focus of a lot of tire research and development personnel.
Disclosure of Invention
In order to solve the problems, the invention develops a rubber composition with low silane coupling agent dosage, the usage amount of the silane coupling agent is reduced, and meanwhile, the defects of poor white carbon black dispersion, poor wet grip performance and high rolling resistance caused by the reduction of the silane coupling agent are overcome by adding functional silicide, so that the rubber composition ensures excellent wet grip performance and rolling resistance performance under the condition of low silane coupling agent dosage.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
the rubber composition with low silane coupling agent consumption is prepared by mixing the following raw materials: 100 parts of rubber component, 70-90 parts of white carbon black component, 2.0-5.8 parts of silane coupling agent component and 1-6 parts of functional silicon compound;
the structural formula of the functional silicide is as follows:
wherein n has a value between 28 and 35.
Preferably, the rubber composition further comprises 1-3 parts by weight of a processing aid, wherein the processing aid is one or more of long-chain fatty acids, fatty acid zinc salts and glycerides; preferably, the processing aid is glycerol monostearate. The problem of heat generation when silane is too low can be solved by adding the processing aid, and the heat generation of the composition is remarkably improved.
Preferably, the rubber component is one or more of natural rubber, polyisoprene rubber, polybutadiene rubber, emulsion polymerized styrene-butadiene rubber, solution polymerized styrene-butadiene rubber, butyl rubber and halogenated butyl rubber. Still preferably, the rubber component is 50-90 parts of solution polymerized styrene-butadiene rubber and 10-50 parts of polybutadiene rubber.
Preferably, the silane coupling agent is one or more of Si-69, si-75, si-747 and NXT, and the ratio a of the silane coupling agent to the white carbon black is less than 7%.
Preferably, the weight average molecular weight Mw of the functional silicide is between 3000 and 4000.
Preferably, the white carbon black is precipitated white carbon black, and one or more of nitrogen adsorption specific surface area (NSA) of 80-250m < 2 >/g is selected; preferably, white carbon black having a nitrogen adsorption specific surface area (NSA) of 120-180m2/g is selected.
Preferably, the processing aid is glycerol monostearate.
Preferably, the rubber composition further comprises a plasticizer component, an anti-aging agent component, an accelerator component, and a vulcanizing agent component.
Preferably, the rubber composition further comprises 9-15 parts of environment-friendly aromatic hydrocarbon oil V700,1.0-3.0 parts of age resistor 6PPD,0.5-1.5 parts of age resistor TMQ,0.5-1.5 parts of microcrystalline wax, 2.0-5.0 parts of zinc oxide, 1.0-3.0 parts of stearic acid, 1.5-3.5 parts of sulfur, 1.0-2.0 parts of accelerator CZ and 1.0-3.0 parts of accelerator DPG.
Further, the invention also discloses a mixing method of the rubber composition, which comprises the following steps:
1. and (3) carrying out one-stage mixing by adopting a meshed type series internal mixer:
and (3) an upper auxiliary machine:
1.1 adding all rubber components, pressing a top plug, and keeping for 15-20 seconds;
1.2 lifting a top plug, adding a silane coupling agent, white carbon black, a rubber active agent, a rubber anti-aging agent and a processing aid, and pressing the top plug to heat the rubber material to 100-110 ℃;
1.3 lifting the top bolt, adding plasticizer, and keeping for 6-10 seconds;
1.4 pressing a top bolt to heat the sizing material to 145-150 ℃, and keeping the constant temperature for 60-80 seconds;
1.5, lifting a top plug, adding functional silicide, and pressing the top plug to raise the temperature to 148 ℃;
1.6 lifting an upper bolt, and discharging glue to a lower auxiliary machine;
the auxiliary machine comprises the following steps:
1.7, heating the sizing material to 145-150 ℃, and keeping the temperature for 80-120 seconds;
1.8, discharging glue, tabletting, cooling to room temperature, and preparing a section of master batch;
2. final refining and vulcanizing by adopting a tangential internal mixer:
2.1 adding a section of masterbatch, a vulcanizing agent and an accelerator;
2.2 pressing a top bolt to heat the sizing material to 70-80 ℃;
2.3 raising the top bolt and keeping for 6-10 seconds;
2.4 pressing a top bolt to heat the sizing material to 85-95 ℃;
2.5 raising the top bolt and keeping for 6-8 seconds;
pressing the top bolt to raise the temperature of the rubber material to 95-105 deg.c, and demolding and tabletting.
The invention further discloses a tire, and the tread of the tire is prepared by vulcanizing the rubber composition.
By adopting the technical scheme, the composition reduces the usage amount of the silane coupling agent, and simultaneously overcomes the defects of poor white carbon black dispersion, poor wet grip performance and high rolling resistance caused by the reduction of the silane coupling agent by adding the functional silicide and the processing aid, so that the rubber composition ensures excellent wet grip performance and rolling resistance performance under the condition of low usage amount of the silane coupling agent.
Detailed Description
In the following, an overview and complete description of the technical solutions in the embodiments of the present invention will be given in connection with the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, but not all embodiments. Given the embodiments of the present invention, all other embodiments that would be obvious to one of ordinary skill in the art without making any inventive effort are within the scope of the present invention.
The raw material formulations of the comparative examples, comparative examples and examples of the present invention are shown in table 1:
table 1, below
Solution polymerized styrene-butadiene rubber: the combined styrene accounts for 36% of the total weight of the polymer, and the vinyl accounts for 41% of the total weight of the butadiene; the functional silicide is selected from products with n=28-35, and the rest products are all commercially available.
Preparation method (1)
1. And (3) carrying out one-stage mixing by adopting a meshed type series internal mixer:
and (3) an upper auxiliary machine:
1.1 adding all rubber components, pressing a top plug, and keeping for 15-20 seconds;
1.2 lifting a top plug, adding a silane coupling agent, white carbon black, a rubber active agent, a rubber anti-aging agent and a processing aid (if any), and pressing the top plug to heat the rubber material to 100-110 ℃;
1.3 lifting the top bolt, adding plasticizer, and keeping for 6-10 seconds;
1.4 pressing a top bolt to heat the sizing material to 145-150 ℃, and keeping the constant temperature for 60-80 seconds;
1.5 lifting a top bolt, and pressing the top bolt to raise the temperature to 148 ℃;
1.6 lifting an upper bolt, and discharging glue to a lower auxiliary machine;
the auxiliary machine comprises the following steps:
1.7, heating the sizing material to 145-150 ℃, and keeping the temperature for 80-120 seconds;
1.8, discharging glue, tabletting, cooling to room temperature, and preparing a section of master batch;
2. final refining and vulcanizing by adopting a tangential internal mixer:
2.1 adding a section of masterbatch, a vulcanizing agent and an accelerator;
2.2 pressing a top bolt to heat the sizing material to 70-80 ℃;
2.3 raising the top bolt and keeping for 6-10 seconds;
2.4 pressing a top bolt to heat the sizing material to 85-95 ℃;
2.5 raising the top bolt and keeping for 6-8 seconds;
pressing the top bolt to raise the temperature of the rubber material to 95-105 deg.c, and demolding and tabletting.
Preparation method (2)
1. And (3) carrying out one-stage mixing by adopting a meshed type series internal mixer:
and (3) an upper auxiliary machine:
1.1 adding all rubber components, pressing a top plug, and keeping for 15-20 seconds;
1.2 lifting a top plug, adding a silane coupling agent, white carbon black, a rubber active agent, a rubber anti-aging agent and a processing aid (if any), and pressing the top plug to heat the rubber material to 100-110 ℃;
1.3 lifting the top bolt, adding plasticizer, and keeping for 6-10 seconds;
1.4 pressing a top bolt to heat the sizing material to 145-150 ℃, and keeping the constant temperature for 60-80 seconds;
1.5, lifting a top plug, adding functional silicide, and pressing the top plug to raise the temperature to 148 ℃;
1.6 lifting an upper bolt, and discharging glue to a lower auxiliary machine;
the auxiliary machine comprises the following steps:
1.7, heating the sizing material to 145-150 ℃, and keeping the temperature for 80-120 seconds;
1.8, discharging glue, tabletting, cooling to room temperature, and preparing a section of master batch;
2. final refining and vulcanizing by adopting a tangential internal mixer:
2.1 adding a section of masterbatch, a vulcanizing agent and an accelerator;
2.2 pressing a top bolt to heat the sizing material to 70-80 ℃;
2.3 raising the top bolt and keeping for 6-10 seconds;
2.4 pressing a top bolt to heat the sizing material to 85-95 ℃;
2.5 raising the top bolt and keeping for 6-8 seconds;
pressing the top bolt to raise the temperature of the rubber material to 95-105 deg.c, and demolding and tabletting.
The testing method comprises the following steps:
DMA test: type VR-7120 in japan; 12HZ,7% pre-strain, 2% dynamic strain, 30 ℃ to 80 ℃,2 ℃/min temperature rise. The Payne effect was simulated using RPA.
TABLE 2 comparative, comparative and example compounds related performance parameters
Continuous table 2
Remarks: the data in Table 2 are all processed data, and the larger the values, the better the performance
The test results of the sizing materials can show that the results of the reference examples 1 and 2 show that the NXT does not bring about improvement of wet grip performance due to the larger molecular weight and the equal-proportion silane consumption, but the white carbon black dispersion and the heat generating performance are obviously better;
as can be seen from the reference example 1 and the comparative example 1, and the reference example 2 and the comparative examples 2 and 3, the white carbon black dispersion and the dynamic performance are deteriorated due to the reduction of Si-69;
as can be seen from the reference example 2 and the comparative examples 4 and 5, when the dosage of the silane coupling agent is too low, the dispersion is poor because the white carbon black cannot be connected on the rubber, and the functional silicide cannot make up the deficiency;
as can be seen from the reference example 1 and the examples 1 and 2, the silane coupling agent is reduced by 40%, the dynamic performance is still maintained, and the processing aid brings about improvement of heat generation;
as can be seen from comparative example 2 and examples 3, 4 and 5, the silane coupling agent is reduced by 40% and 60%, the dynamic performance is still maintained, and the functional silicide is increased to improve the dynamic performance, so that the heat generation of the processing aid is improved more obviously.
In summary, the invention ensures the dispersion of the white carbon black and the dynamic performance of the rubber composition on the premise of reducing the dosage of the silane coupling agent.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art. The generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (12)
1. The rubber composition with low silane coupling agent consumption is characterized by being prepared by mixing the following raw materials: 100 parts of rubber component, 70-90 parts of white carbon black component, 2.0-5.8 parts of silane coupling agent component and 1-6 parts of functional silicon compound;
the structural formula of the functional silicide is as follows:
wherein n has a value between 28 and 35; the ratio a of the silane coupling agent to the white carbon black is less than 7%.
2. The rubber composition with low silane coupling agent according to claim 1, further comprising 1-3 parts by weight of a processing aid selected from one or more of long-chain fatty acids, zinc salts of fatty acids, glycerides.
3. A low silane coupling agent amount rubber composition according to claim 2 wherein said processing aid is selected from the group consisting of glyceryl monostearate.
4. The rubber composition with low silane coupling agent dosage according to claim 1, wherein the rubber component is one or more of natural rubber, polyisoprene rubber, polybutadiene rubber, emulsion polymerized styrene-butadiene rubber, solution polymerized styrene-butadiene rubber, butyl rubber and halogenated butyl rubber.
5. The rubber composition of claim 1 wherein said silane coupling agent is one or more of Si-69, si-75, si-747, NXT.
6. The rubber composition with low silane coupling agent according to claim 1, wherein the weight average molecular weight Mw of the functional silicide is between 3000 and 4000.
7. The rubber composition with low silane coupling agent dosage as claimed in claim 1, wherein the white carbon black is precipitated white carbon black, and the nitrogen adsorption specific surface area (NSA) is selected to be 80-250m 2 One or more of/g.
8. The rubber composition with low silane coupling agent amount according to claim 7, wherein the silica-based nitrogen adsorption specific surface area (NSA) is 120-180m 2 White carbon black in the range of/g.
9. The rubber composition having a low silane coupling agent amount according to claim 1, further comprising a plasticizer component, an anti-aging agent component, an accelerator component and a vulcanizing agent component.
10. The rubber composition with low silane coupling agent dosage according to claim 1, wherein the rubber composition further comprises 9-15 parts of environment-friendly aromatic hydrocarbon oil V700,1.0-3.0 parts of antioxidant 6PPD,0.5-1.5 parts of antioxidant TMQ,0.5-1.5 parts of microcrystalline wax, 2.0-5.0 parts of zinc oxide, 1.0-3.0 parts of stearic acid, 1.5-3.5 parts of sulfur, 1.0-2.0 parts of accelerator CZ and 1.0-3.0 parts of accelerator DPG.
11. A method of kneading a rubber composition according to any one of claims 1 to 10, comprising the steps of:
1. and (3) carrying out one-stage mixing by adopting a meshed type series internal mixer:
and (3) an upper auxiliary machine:
1.1 Adding all rubber components, pressing a top plug, and keeping for 15-20 seconds;
1.2 Lifting a top plug, adding a silane coupling agent, white carbon black, a rubber active agent, a rubber anti-aging agent and a processing aid, and lifting the top plug to heat the rubber material to 100-110 ℃;
1.3 Lifting the top bolt, adding plasticizer, and keeping for 6-10 seconds;
1.4 Pressing a top bolt to heat the sizing material to 145-150 ℃, and keeping the constant temperature for 60-80 seconds;
1.5 Lifting a top plug, adding functional silicide, and lifting the top plug to raise the temperature to 148 ℃;
1.6 lifting an upper bolt, and discharging glue to a lower auxiliary machine;
the auxiliary machine comprises the following steps:
1.7 Heating the sizing material to 145-150 ℃, and keeping the temperature for 80-120 seconds;
1.8 Discharging glue, tabletting, cooling to room temperature, and preparing a section of master batch;
2. final refining and vulcanizing by adopting a tangential internal mixer:
2.1 Adding a section of master batch, a vulcanizing agent and an accelerator;
2.2 Pressing a top bolt to heat the sizing material to 70-80 ℃;
2.3 Raising the top plug and keeping for 6-10 seconds;
2.4 Pressing a top bolt to heat the sizing material to 85-95 ℃;
2.5 Raising the top plug and keeping for 6-8 seconds;
2.6 Pressing the top bolt to heat the glue to 95-105 deg.c, and discharging glue and tabletting.
12. A tire, wherein the tread of the tire is prepared by vulcanizing the rubber composition of any one of claims 1 to 10.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211127973.2A CN115353676B (en) | 2022-09-16 | 2022-09-16 | Rubber composition with low silane coupling agent dosage, mixing method thereof and tire |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211127973.2A CN115353676B (en) | 2022-09-16 | 2022-09-16 | Rubber composition with low silane coupling agent dosage, mixing method thereof and tire |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115353676A CN115353676A (en) | 2022-11-18 |
| CN115353676B true CN115353676B (en) | 2023-05-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202211127973.2A Active CN115353676B (en) | 2022-09-16 | 2022-09-16 | Rubber composition with low silane coupling agent dosage, mixing method thereof and tire |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09194641A (en) * | 1996-01-19 | 1997-07-29 | Yokohama Rubber Co Ltd:The | Compounding agent for rubber and rubber composition containing the same |
| JPH11189680A (en) * | 1997-12-26 | 1999-07-13 | Yokohama Rubber Co Ltd:The | Rubber composition |
| JP2006282964A (en) * | 2005-04-05 | 2006-10-19 | Asahi Kasei Chemicals Corp | Rubber composition |
| JP2014185342A (en) * | 2013-02-25 | 2014-10-02 | Yokohama Rubber Co Ltd:The | Rubber composition for tire and pneumatic tire using the same |
| CN105670062A (en) * | 2016-01-27 | 2016-06-15 | 北京化工大学 | Wear-resistant tire tread rubber material with high wet skid resistance, low rolling resistance and high performance |
-
2022
- 2022-09-16 CN CN202211127973.2A patent/CN115353676B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09194641A (en) * | 1996-01-19 | 1997-07-29 | Yokohama Rubber Co Ltd:The | Compounding agent for rubber and rubber composition containing the same |
| JPH11189680A (en) * | 1997-12-26 | 1999-07-13 | Yokohama Rubber Co Ltd:The | Rubber composition |
| JP2006282964A (en) * | 2005-04-05 | 2006-10-19 | Asahi Kasei Chemicals Corp | Rubber composition |
| JP2014185342A (en) * | 2013-02-25 | 2014-10-02 | Yokohama Rubber Co Ltd:The | Rubber composition for tire and pneumatic tire using the same |
| CN105670062A (en) * | 2016-01-27 | 2016-06-15 | 北京化工大学 | Wear-resistant tire tread rubber material with high wet skid resistance, low rolling resistance and high performance |
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| Publication number | Publication date |
|---|---|
| CN115353676A (en) | 2022-11-18 |
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