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CN-121991420-A - Cold-resistant mountain motorcycle special tire and manufacturing process thereof

CN121991420ACN 121991420 ACN121991420 ACN 121991420ACN-121991420-A

Abstract

The invention belongs to the technical field of rubber tires, in particular to a cold-resistant mountain motorcycle special tire and a manufacturing process thereof, the tread rubber of the tire comprises solution polymerized styrene-butadiene rubber, carbon black, white carbon black, silane functional layered aluminum silicate zirconium calcium potassium compound, zinc magnesium lanthanum ternary metal organic framework/graphene oxide hybrid material, zinc oxide, stearic acid, an anti-aging agent, aromatic oil, insoluble sulfur and an accelerator. The silane functionalized layered aluminum zirconium calcium potassium silicate compound is prepared by grafting montmorillonite and sulfur-containing silane after being co-modified by zirconium calcium potassium ions, and the zinc magnesium lanthanum ternary metal organic framework/graphene oxide hybrid material is synthesized by solvothermal synthesis of zinc magnesium lanthanum metal ions and terephthalic acid in the presence of graphene oxide. The tire disclosed by the invention has the advantages that the tear resistance and the wear resistance under the low-temperature condition are obviously improved while the excellent mechanical properties are maintained, and the tire is particularly suitable for the running requirements of mountain motorcycles in severe cold environments.

Inventors

  • MA ZHIGUANG
  • YIN FENGHE
  • REN YANHAI
  • NIU PENGXIANG
  • Xiang Yanzheng
  • HU PINGJIANG
  • LEI ZHENNING

Assignees

  • 河北万峻轮胎有限公司

Dates

Publication Date
20260508
Application Date
20260324

Claims (10)

  1. 1. The cold-resistant mountain motorcycle special tire is characterized by comprising the following components in parts by weight: 60.0-80.0 parts of solution polymerized styrene-butadiene rubber, 20.0-40.0 parts of butadiene rubber, 40.0-60.0 parts of carbon black N234, 10.0-30.0 parts of white carbon black, 5.0-15.0 parts of silane functionalized layered aluminum silicate calcium potassium compound, 3.0-10.0 parts of zinc magnesium lanthanum ternary metal organic framework/graphene oxide hybrid material, 2.0-5.0 parts of zinc oxide, 1.0-3.0 parts of stearic acid, 1.0-3.0 parts of age resister 4020.5-2.0 parts of age resister RD, 5.0-15.0 parts of aromatic oil, 1.5-3.5 parts of insoluble sulfur, 1.0-2.5 parts of accelerator CBS and 0-1.5 parts of accelerator DPG.
  2. 2. The cold-resistant mountain motorcycle dedicated tire as claimed in claim 1, wherein the preparation method of the silane functionalized layered calcium zirconium aluminosilicate potassium complex comprises the following steps: Dispersing 95-105 parts of montmorillonite in deionized water under the protection of nitrogen, stirring, heating to 60-70 ℃ to obtain suspension, dissolving 13-17 parts of zirconium nitrate, 7-9 parts of calcium nitrate and 4.5-5.5 parts of potassium nitrate in the deionized water to obtain mixed salt solution, adding the mixed salt solution into the suspension, regulating the pH to 4.0-5.0, stirring for reaction, carrying out suction filtration to obtain precipitate, washing the precipitate with deionized water, drying at 100-110 ℃, crushing and sieving to obtain an intermediate; A2, dispersing the intermediate in absolute ethyl alcohol, performing ultrasonic dispersion, adding 2.7-3.3 parts of 3-mercaptopropyl triethoxysilane and 0.4-0.6 part of dibutyltin dilaurate, heating to 76-80 ℃ for reaction under the protection of nitrogen, performing reduced pressure distillation after the reaction is finished to obtain a solid product, washing the solid product with absolute ethyl alcohol, performing vacuum drying at 58-62 ℃, crushing and sieving.
  3. 3. The cold-resistant mountain bike special tire as claimed in claim 2, wherein in step A1, the stirring reaction time is 4-6 hours.
  4. 4. The cold-resistant mountain bike special tire as claimed in claim 2, wherein in step A2, the reaction time for heating to 76-80 ℃ is 6-8 hours.
  5. 5. The cold-resistant mountain motorcycle special tire according to claim 1, wherein the preparation method of the zinc-magnesium-lanthanum ternary metal organic framework/graphene oxide hybrid material comprises the following steps: B1, dispersing 0.4-0.6 part of graphene oxide in N, N-dimethylformamide by weight, carrying out ultrasonic dispersion to obtain graphene oxide dispersion liquid, dissolving 2.3-2.7 parts of zinc nitrate hexahydrate, 1.1-1.3 parts of magnesium nitrate hexahydrate and 0.7-0.9 part of lanthanum nitrate hexahydrate in N, N-dimethylformamide to obtain mixed metal salt solution, dissolving 3.0-3.4 parts of terephthalic acid in N, N-dimethylformamide to obtain organic ligand solution, dropwise adding the mixed metal salt solution and the organic ligand solution into the graphene oxide dispersion liquid under stirring, continuing stirring after dropwise adding to obtain mixed liquid, transferring the mixed liquid into a high-pressure reaction kettle, and carrying out solvothermal reaction at 130-150 ℃ to obtain a reaction mixture; And B2, naturally cooling the reaction mixture to room temperature, centrifugally separating to obtain a precipitate, washing the precipitate with N, N-dimethylformamide and absolute ethyl alcohol in sequence, drying in vacuum, and grinding.
  6. 6. The cold-resistant mountain bike dedicated tire as claimed in claim 5, wherein in step B1, the solvothermal reaction time is 24-48h at 130-150 ℃.
  7. 7. The cold-resistant mountain bike dedicated tire as claimed in claim 5, wherein in step B2, the vacuum drying temperature is 78-82 ℃.
  8. 8. A process for preparing a tyre for motorcycles in cold-resistant mountain areas according to any one of claims 1 to 7, comprising the steps of: s1, putting solution polymerized styrene-butadiene rubber and butadiene rubber into an internal mixer, adding carbon black N234 and white carbon black, adding a silane functionalized layered aluminum calcium zirconium silicate composite, a zinc magnesium lanthanum ternary metal organic framework/graphene oxide hybrid material, zinc oxide, stearic acid and aromatic oil, mixing at 140-160 ℃ to obtain a masterbatch, cooling the masterbatch, putting the masterbatch into the internal mixer, adding an anti-aging agent 4020, an anti-aging agent RD, insoluble sulfur, an accelerator CBS and an accelerator DPG, mixing at 100-110 ℃ to obtain a final rubber, extruding the final rubber into a tread rubber strip through a screw extruder, cooling, cutting to obtain a cut tread rubber strip, and combining the cut tread rubber strip with a sidewall rubber, a belt layer, a carcass and a tire bead to form a tire blank; s2, placing the green tyre in a vulcanizing machine, and vulcanizing.
  9. 9. The process for preparing a cold-resistant mountain motorcycle dedicated tire as claimed in claim 8, wherein in step S1, the kneading time at 140-160 ℃ is 3-5min.
  10. 10. The process for preparing a cold-resistant mountain motorcycle dedicated tire as claimed in claim 8, wherein in step S2, the vulcanization treatment temperature is 150-170 ℃.

Description

Cold-resistant mountain motorcycle special tire and manufacturing process thereof Technical Field The invention belongs to the technical field of rubber tires, and particularly relates to a cold-resistant mountain motorcycle special tire and a manufacturing process thereof. Background When the mountain motorcycle runs in severe cold regions, the tire performance faces serious challenges. The traditional rubber tire is extremely easy to generate hardening phenomenon under low-temperature environment, so that the elastic modulus is obviously increased, the gripping force is greatly reduced, and especially on steep mountain roads covered by ice and snow, the adhesive force between the tire and the ground is extremely weakened, and safety accidents such as slipping, side turning and the like are extremely easy to occur. Cold-resistant tires on the market today employ high proportions of synthetic rubber or the addition of plasticizers to improve low temperature toughness, but these methods often come at the expense of tire strength, wear resistance, and service life. For example, the plasticizer is easy to separate out at low temperature to excessively soften rubber, and the high-proportion synthetic rubber can promote flexibility, but can cause the deformation of the carcass to be increased and the abrasion to be accelerated in high-temperature or high-speed running. In addition, the tire is easy to generate microcracks in repeated cold and hot alternation, the structural stability is reduced, the dual requirements of the mountain complex terrain on safety and durability can not be met, and the popularization and safety of mountain riding in cold areas are severely restricted. In order to improve the cold resistance of the tire, the prior art mostly relies on nano fillers or metal oxide modification. The silicate filler is adopted in part of the scheme to enhance the low-temperature toughness, but silicate is easy to agglomerate in the mixing process, so that uneven dispersion is caused, the performance of a rubber matrix is greatly fluctuated, the mechanical strength is difficult to ensure, and the metal oxide can improve the cold resistance, but is easy to initiate oxidation reaction, accelerate the aging of the tire and shorten the service life. Meanwhile, part of the processes are required to be carried out under inert atmosphere or high-temperature solvothermal reaction is adopted, equipment requirements are high, the cost is high, the steps are complex, and industrial mass production is difficult to realize. More critical, the prior art always compromises abrasion resistance when improving low-temperature elasticity, but causes processing difficulty when enhancing cold resistance, and cannot compromise comprehensive performance. For example, in some patents, metal salts are added at one time, so that surface precipitation is easy to form, the lamellar structure is damaged, mercaptosilane is easy to oxidize and inactivate in air, the crosslinking efficiency with rubber is reduced, the product performance is unstable, and the practical application requirement is difficult to meet. Disclosure of Invention Aiming at the defects of the prior art, the invention aims to provide a cold-resistant mountain motorcycle special tire and a manufacturing process thereof. The invention provides a cold-resistant mountain motorcycle special tire, which comprises the following components in parts by weight: 60.0-80.0 parts of solution polymerized styrene-butadiene rubber, 20.0-40.0 parts of butadiene rubber, 40.0-60.0 parts of carbon black N234, 10.0-30.0 parts of white carbon black, 5.0-15.0 parts of silane functionalized layered aluminum silicate calcium potassium compound, 3.0-10.0 parts of zinc magnesium lanthanum ternary metal organic framework/graphene oxide hybrid material, 2.0-5.0 parts of zinc oxide, 1.0-3.0 parts of stearic acid, 1.0-3.0 parts of age resister 4020.5-2.0 parts of age resister RD, 5.0-15.0 parts of aromatic oil, 1.5-3.5 parts of insoluble sulfur, 1.0-2.5 parts of accelerator CBS and 0-1.5 parts of accelerator DPG. According to the preferred embodiment of the invention, the preparation method of the silane functionalized layered calcium zirconium aluminum silicate compound comprises the steps of A1, dispersing 95-105 parts of montmorillonite in deionized water under the protection of nitrogen, stirring, heating to 60-70 ℃ to obtain a suspension, dissolving 13-17 parts of zirconium nitrate, 7-9 parts of calcium nitrate and 4.5-5.5 parts of potassium nitrate in the deionized water to obtain a mixed salt solution, adding the mixed salt solution into the suspension, adjusting pH to 4.0-5.0, stirring for reaction, carrying out suction filtration to obtain a precipitate, washing the precipitate with deionized water, drying at 100-110 ℃, crushing and sieving to obtain an intermediate, A2, dispersing the intermediate in absolute ethyl alcohol, carrying out ultrasonic dispersion, adding 2.7-3.3 parts of 3-me