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CN-122011614-A - Rubber wet skid resistant material and preparation method and application thereof

CN122011614ACN 122011614 ACN122011614 ACN 122011614ACN-122011614-A

Abstract

The application discloses a rubber wet skid resistant material, a preparation method and application thereof, and belongs to the field of rubber additives. The wet skid resistant rubber material is prepared from the following raw materials, by weight, 30-50 parts of a styrene-alpha methyl styrene copolymer, 8-15 parts of a modified terpolymer, and the modified terpolymer is prepared by copolymerizing a styrene monomer, a diene monomer and 2, 6-di-tert-butyl-4-vinylphenol. A process for preparing the wet slide resistant rubber material includes such steps as copolymerizing styrene monomer, diolefin monomer and 2, 6-di-tert-butyl-4-vinylphenol to obtain modified ternary copolymer, and pugging the styrene-alpha-methyl styrene copolymer with the modified ternary copolymer. The application has the effect of more comprehensively and effectively improving the wet skid resistance of rubber.

Inventors

  • LI YAO

Assignees

  • 肇庆市联力化工有限公司

Dates

Publication Date
20260512
Application Date
20260209

Claims (10)

  1. 1. The rubber wet skid resistant material is characterized by being prepared from the following raw materials in parts by weight: 30-50 parts of a styrene-alpha methyl styrene copolymer; 8-15 parts of modified terpolymer; The modified terpolymer is formed by copolymerizing a styrene monomer, a diene monomer and 2, 6-di-tert-butyl-4-vinylphenol.
  2. 2. The rubber wet skid resistant material of claim 1, wherein the molar ratio of the styrene monomer, the diene monomer and the 2, 6-di-tert-butyl-4-vinylphenol in the modified terpolymer is 1 (0.6-0.8): 0.15-0.25.
  3. 3. The rubber wet skid resistant material as set forth in claim 1, wherein said modified terpolymer is one of styrene, alpha methyl styrene, para methyl styrene and ortho methyl styrene.
  4. 4. A rubber wet skid resistant material as set forth in claim 1 wherein said modified terpolymer, said diene monomer comprises one of butadiene and isoprene.
  5. 5. The rubber wet skid resistant material as set forth in claim 1, wherein said modified terpolymer is one of p-methylstyrene and isoprene.
  6. 6. The rubber wet skid resistant material as set forth in claim 1, wherein the styrene-alpha-methylstyrene copolymer has a styrene content of 30 to 60wt%.
  7. 7. A process for preparing a rubber wet skid resistant material as defined in any one of claims 1 to 6, comprising the steps of: Dispersing a styrene monomer, a diene monomer and 2, 6-di-tert-butyl-4-vinylphenol in a first solvent to obtain a reactant mixed solution; Dispersing a catalyst in a second solvent to obtain a catalyst mixed solution; dropwise adding the catalyst mixed solution into the reactant mixed solution at the temperature of 10-20 ℃, continuing to react after the dropwise adding is finished, terminating the reaction, filtering, and distilling under reduced pressure to obtain a modified terpolymer; and mixing the styrene-alpha methyl styrene copolymer and the modified terpolymer to obtain the rubber wet skid resistant material.
  8. 8. The method for producing a rubber wet skid resistant material as set forth in claim 7, wherein said first solvent and said second solvent each independently comprise one or more of toluene, xylene, cyclohexane, methylcyclohexane, dioxane and hydrogenated solvent oil.
  9. 9. The method for preparing a rubber wet skid resistant material as set forth in claim 7, wherein said catalyst comprises one or more of boron trifluoride, boron trichloride and aluminum trichloride.
  10. 10. Use of a rubber wet skid resistant material according to any of claims 1 to 6 in rubber articles.

Description

Rubber wet skid resistant material and preparation method and application thereof Technical Field The application relates to the field of rubber additives, in particular to a rubber wet-resistant sliding material, a preparation method and application thereof. Background The wet skid resistance is one of key indexes for evaluating the performances of rubber products such as tires and the like, is used for improving the grip of the tires, particularly the wet grip, and ensures the running safety. Besides optimizing tread cross patterns and adjusting pattern grooves, the anti-wet-skid performance of the tire can be improved by adding anti-wet-skid materials. The moisture-slip resistant material mainly includes terpene resin, petroleum resin and styrene resin. The tire mostly uses styrene-butadiene rubber as base rubber, and the styrene resin has similar compatible characteristics with the styrene-butadiene rubber, so that the styrene resin is widely applied to the tire rubber as an anti-wet skid material. Although the addition of the styrene resin can improve the grip of the tire, fillers such as carbon black and white carbon black are not separated from the tire formula, and in a rubber system added with the carbon black and the white carbon black, the addition of the styrene resin often leads to obvious increase of rolling resistance, influences the driving experience, and causes difficulty in improving the balance of wet skid resistance and low rolling resistance. Disclosure of Invention In order to improve the wet skid resistance of rubber and reduce the adverse effect on rolling resistance, the application provides a wet skid resistant rubber material, and a preparation method and application thereof. In a first aspect, the application provides a rubber wet-resistant sliding material, which adopts the following technical scheme: A rubber wet skid resistant material is prepared from the following raw materials in parts by weight: 30-50 parts of a styrene-alpha methyl styrene copolymer; 8-15 parts of modified terpolymer; The modified terpolymer is formed by copolymerizing a styrene monomer, a diene monomer and 2, 6-di-tert-butyl-4-vinylphenol. By adopting the technical scheme, the styrene-alpha methyl styrene copolymer as the wet skid resistant material can increase the hysteresis of rubber, thereby playing the role of wet skid resistance. On the basis of styrene-alpha methyl styrene copolymer, modified ternary copolymer is added, the rigidity of benzene ring of 2, 6-di-tert-butyl-4-vinyl phenol is utilized to form microscopic hard spots, and the structure of two ortho-tert-butyl groups is matched to facilitate embedding into soft chain segments of rubber material, so that the softness and hardness of the rubber material are moderate, the grip of the surface of the material is increased, the polarity of the anti-wet-slip material can be enhanced through phenolic hydroxyl groups, hydrogen bonds combined with a filler system are provided, the anchoring points are formed, the dispersibility of fillers such as carbon black and white carbon black is improved, the increase of rolling resistance of the rubber material is effectively inhibited, and the copolymer formed by 2, 6-di-tert-butyl-4-vinyl phenol, styrene monomers and diene monomers is used for effectively solving the problem that small molecular monomers are easy to migrate in rubber, improving the distribution characteristic of 2, 6-di-tert-butyl-4-vinyl phenol, so that the compatibility with the styrene-alpha methyl styrene copolymer is improved, and the anti-wet-slip capability is promoted. Optionally, in the modified terpolymer, the molar ratio of the styrene monomer to the diene monomer to the 2, 6-di-tert-butyl-4-vinylphenol is 1 (0.6-0.8) (0.15-0.25). By adopting the technical scheme, the proportion of the styrene monomer, the diene monomer and the 2, 6-di-tert-butyl-4-vinyl phenol is controlled so as to control the dispersion distribution of the 2, 6-di-tert-butyl-4-vinyl phenol in the modified terpolymer, improve the rigidity distribution of benzene rings and keep the copolymer moderate in toughness, thereby better combining with the styrene-alpha methyl styrene copolymer and playing the role of anti-wet sliding in rubber materials. Optionally, in the modified terpolymer, the styrenic monomer comprises one of styrene, alpha methyl styrene, para methyl styrene and ortho methyl styrene. By adopting the technical scheme, the styrene monomer provides a benzene ring rigid support and balances the hardness of the modified terpolymer. Optionally, in the modified terpolymer, the diene monomer comprises one of butadiene and isoprene. By adopting the technical scheme, the diene monomer can effectively increase the distance between benzene rings and also plays a role in balancing the hardness of the modified terpolymer. Optionally, in the modified terpolymer, the styrene monomer is p-methylstyrene, and the diene monomer is isoprene. By adopting the technica