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CN-122011526-A - High-stability tire rubber containing benzyltoluene and preparation method thereof

CN122011526ACN 122011526 ACN122011526 ACN 122011526ACN-122011526-A

Abstract

The invention relates to the technical field of tires, in particular to a high-stability tire rubber containing benzyltoluene and a preparation method thereof, wherein the high-stability tire rubber comprises the following raw materials, by mass, 40-70 parts of a composite rubber composition, 5-25 parts of a plasticizer, 10-15 parts of an auxiliary agent, 2-5 parts of a vulcanizing agent, 0.5-1.5 parts of a vulcanization accelerator and 1-4 parts of stearic acid. The tire rubber provided by the invention has better wear resistance, mechanical property, ageing resistance and self-repairing capability.

Inventors

  • BAO XUDONG

Assignees

  • 江西天一特种油有限公司

Dates

Publication Date
20260512
Application Date
20260311

Claims (10)

  1. 1. The high-stability tire rubber containing the benzyltoluene is characterized by comprising, by mass, 40-70 parts of a composite rubber composition, 5-25 parts of a plasticizer, 10-15 parts of an auxiliary agent, 2-5 parts of a vulcanizing agent, 0.5-1.5 parts of a vulcanization accelerator and 1-4 parts of stearic acid.
  2. 2. The high-stability benzyltoluene-containing tire rubber according to claim 1, wherein the composite rubber composition is composed of a combination of styrene-butadiene rubber and natural rubber.
  3. 3. The high-stability benzyltoluene-containing tire rubber according to claim 2, wherein the mass ratio of the styrene-butadiene rubber to the natural rubber is 1 (1-1.3).
  4. 4. The high stability benzyltoluene containing tyre rubber according to claim 1, wherein said plasticizer is a dibenzyltoluene.
  5. 5. The high-stability benzyltoluene-containing tire rubber according to claim 1, wherein the process for preparing the auxiliary comprises the steps of: s1, mixing carbon black, bis- [3- (triethoxysilyl) propyl ] disulfide and 3- (trimethoxysilyl) -1-propanethiol, adding the mixture into tetrahydrofuran, heating to 55-65 ℃ under the microwave power of 250-350W, stirring for 0.5-1 h at constant temperature, centrifuging, filtering, washing and drying after the reaction is finished to obtain modified carbon black; And S2, dissolving dopamine hydrochloride in Tris buffer solution, adding copper nitrate, stirring at room temperature to obtain a composite solution, then adding the modified carbon black obtained in the step S1, stirring vigorously for 20-30 min, centrifuging, filtering, washing with deionized water, and freeze-drying to obtain the auxiliary agent.
  6. 6. The benzyltoluene-containing high stability tire rubber according to claim 5, wherein in step S1, the mass of the carbon black is 5 to 8 times the total mass of bis- [3- (triethoxysilyl) propyl ] disulfide and 3- (trimethoxysilyl) -1-propanethiol.
  7. 7. The benzyltoluene-containing high stability tire rubber according to claim 5, wherein in step S1, the molar ratio of bis- [3- (triethoxysilyl) propyl ] disulfide to 3- (trimethoxysilyl) -1-propanethiol is 1 (1 to 3).
  8. 8. The high-stability benzyltoluene-containing tire rubber according to claim 5, wherein in step S2, the mass ratio of dopamine hydrochloride to modified carbon black is 1 (1-2).
  9. 9. The high-stability benzyltoluene-containing tire rubber according to claim 1, wherein the vulcanizing agent is sulfur.
  10. 10. A method for preparing the high-stability tire rubber containing the benzyltoluene, which is characterized by comprising the steps of adding a composite rubber composition and an auxiliary agent into an internal mixer, mixing for 4-6 min at 150-160 ℃, adding a plasticizer and stearic acid, mixing for 4-6 min at 150-160 ℃, adding a vulcanizing agent and a vulcanization accelerator, and mixing for 3-5 min at 95-105 ℃ to obtain the high-stability tire rubber.

Description

High-stability tire rubber containing benzyltoluene and preparation method thereof Technical Field The invention relates to the technical field of tires, in particular to high-stability tire rubber containing benzyltoluene and a preparation method thereof. Background The development of high stability tire rubber stems from the continued pursuit of safety, durability and environmental performance by the automotive industry. As the only component of the vehicle that is in contact with the road surface, the stability of the tire is directly related to driving safety, energy consumption efficiency and driving comfort. The traditional rubber material is easy to age, deform or lower in grip force under extreme temperature, complex road conditions and long-term stress, and the like, and particularly in a high-speed driving or heavy-load scene, delamination and tire burst risks caused by heat generation of a tire body are remarkable, and along with popularization of new energy automobiles and increase of extreme working condition demands, heat resistance, wear resistance and structural stability of the material become the core direction of technological attack. The diversity of rubber is characterized by the excellent elasticity and strength of natural rubber, while synthetic rubber is characterized by oil resistance, temperature resistance (-120 ℃ to 100 ℃) and the like, such as the outstanding corrosion resistance of fluororubber and the outstanding insulation of silicone rubber. The core processing technology comprises the links of mixing, calendaring, vulcanizing and the like, wherein the vulcanizing is carried out through sulfur or peroxide crosslinking molecular chains, and the elasticity and durability of the material are obviously improved. The application level of the rubber is that the rubber permeates into the modern life in a multi-dimension way, the tire occupies more than 70% of the global rubber consumption, the wear resistance and the buffering performance are relied on to ensure traffic safety, the industrial field covers sealing elements, shock absorbers and conveying belts, the problems of fluid leakage prevention and mechanical stability are solved, the rubber is used for waterproof materials and sound insulation layers in buildings, and the medical field is dependent on silica gel and the like to manufacture biocompatible instruments. However, the rubber is used in the field of tires, and various problems still need to be solved, for example, patent number CN109456513B discloses a wear-resistant tire rubber and a preparation method thereof, wherein the wear-resistant tire rubber comprises, by weight, 25-40 parts of natural rubber, 10-15 parts of butadiene rubber, 20-50 parts of styrene-butadiene rubber, 10-25 parts of carbon black, 5-15 parts of modified silicon carbide, 1-3 parts of vulcanizing agent, 1-4 parts of vulcanization accelerator, 2-5 parts of zinc oxide, 1-3 parts of stearic acid, 2-5 parts of anti-aging agent and 2-3 parts of paraffin wax. Also disclosed in patent No. CN108752675B is a low rolling resistance tire rubber composition and its use comprising, by weight, 10-35% solution polymerized styrene-butadiene rubber, X% emulsion polymerized styrene-butadiene rubber, 0<X≤25%, Y% high cis polybutadiene, 0< Y≤15%, 2-25% reinforcing carbon black, 10-40% silica filler, 6-15% silane coupling agent, Z% hydrocarbon resin, 0<Z≤5, 2-18% plasticizing system comprising amorphous silica spherical particles, fatty acid zinc salt and processing oil, the components of the patent acting together in a certain ratio to improve tire rolling resistance and processing workability, have good performance compromises in rolling resistance, grip and wear resistance, and solve the problem of difficult processing workability when the amount of reinforcing filler is high, and the rubber composition is particularly suitable for use in high performance tire tread rubber. However, in the daily use process of rubber, some inorganic auxiliary agents are usually added to the rubber to improve the wear resistance, the compatibility of the inorganic auxiliary agents and a rubber system is poor, migration and precipitation are easy to occur, and in addition, the aging of the rubber is one of factors which seriously influence the use safety, so that the development of the tire rubber with good wear resistance and temperature resistance, good compatibility of all components and excellent aging resistance is needed. Disclosure of Invention The invention aims to provide high-stability tire rubber containing benzyl toluene and a preparation method thereof, which are used for solving the problems that the existing inorganic auxiliary agent has poor compatibility with a rubber system, is easy to migrate and separate out and has poor ageing resistance. In order to achieve the above purpose, the present invention adopts the following technical scheme: The invention provides high-stability tire rubber containing benzyltoluene,