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CN-122011512-A - Rubber composite material, preparation method and application thereof, rubber compound and application thereof

CN122011512ACN 122011512 ACN122011512 ACN 122011512ACN-122011512-A

Abstract

The invention belongs to the field of rubber composite materials, and particularly relates to a rubber composite material, a preparation method and application thereof, a rubber compound and application thereof. The rubber composite material provided by the invention comprises silicon dioxide and silane modified liquid 1, 4-polybutadiene grafted on the surface of the silicon dioxide, wherein the specific surface area of the silicon dioxide is 3-50 m 2 /g. The silica in the invention has lower specific surface area and lower surface energy, the silane modified liquid 1, 4-polybutadiene can react with silicon hydroxyl in the white carbon black to improve the bonding capability of the white carbon black and a rubber matrix, and the rubber composite material can improve the dispersibility of the white carbon black in rubber, reduce the filler agglomeration phenomenon and facilitate the action of the white carbon black, thereby improving the wet skid resistance, the wear resistance and the rolling resistance of the rubber material.

Inventors

  • YANG HAILONG
  • YE QIANG
  • HE LILI
  • SUN YU
  • ZHANG XUEQUAN

Assignees

  • 陕西延长石油集团橡胶有限公司
  • 青岛科技大学

Dates

Publication Date
20260512
Application Date
20260323

Claims (10)

  1. 1. The rubber composite material is characterized by comprising silicon dioxide and silane modified liquid 1, 4-polybutadiene grafted on the surface of the silicon dioxide, wherein the specific surface area of the silicon dioxide is 3-50 m 2 /g.
  2. 2. The rubber composite material according to claim 1, wherein the silica has a particle size of 500 to 5000 mesh; The grafting amount of silane in the silane modified liquid 1, 4-polybutadiene is 10-20%, and the purity of the silane modified liquid 1, 4-polybutadiene is more than 93%.
  3. 3. A method of producing a rubber composite according to claim 1 or 2, characterized by comprising the steps of: Calcining rice hulls to obtain a calcined product, wherein the calcined product comprises silicon dioxide; And mixing the calcined product with silane modified liquid 1, 4-polybutadiene, and then carrying out grafting reaction to obtain the rubber composite material.
  4. 4. The method according to claim 3, wherein the calcination temperature is 450-800 ℃ and the time is 1-3 hours.
  5. 5. The method according to claim 3 or 4, wherein the mass percentage of silica in the calcined product is 60% or more.
  6. 6. The method according to claim 3, wherein the mass ratio of the silica to the silane-modified liquid 1, 4-polybutadiene is 1:0.5 to 1.5.
  7. 7. The method according to claim 3 or 6, wherein the grafting reaction is carried out in a protective atmosphere at a temperature of 150 to 170 ℃ for a time of 0.5 to 2 hours.
  8. 8. The rubber composite material according to claim 1 or 2 or the rubber composite material prepared by the preparation method according to any one of claims 3 to 7, as a processing aid for preparing a rubber compound.
  9. 9. The rubber compound is characterized by comprising the following preparation raw materials in parts by weight: 100-120 parts of rubber; 80-150 parts of white carbon black; 5-10 parts of a silane coupling agent; 1-3 parts of stearic acid; 2-4 parts of zinc oxide; 1-4 parts of an anti-aging agent; 1.5-2.5 parts of microcrystalline wax; 10-30 parts of a processing aid; The processing aid is the rubber composite material according to claim 1 or 2 or the rubber composite material prepared by the preparation method according to any one of claims 3-7.
  10. 10. Use of the rubber compound according to claim 9 for the preparation of rubber tires.

Description

Rubber composite material, preparation method and application thereof, rubber compound and application thereof Technical Field The invention belongs to the technical field of rubber composite materials, and particularly relates to a rubber composite material, a preparation method and application thereof, a rubber compound and application thereof. Background In recent years, with the development of energy saving and emission reduction policies and the technology of green tires, white carbon black is gradually becoming a main reinforcing filler of tread rubber. Compared with the traditional carbon black system, the white carbon black can obviously reduce the hysteresis loss of sizing materials, reduce the rolling resistance of tires, improve the fuel economy of vehicles and reduce the carbon dioxide emission. However, the surface of white carbon black is rich in hydroxyl groups and has stronger polarity, and a common rubber matrix (such as styrene-butadiene rubber, natural rubber and the like) of the tire is a nonpolar material, so that the compatibility of the two materials is poor. White carbon black is easy to agglomerate in the mixing process, difficult to disperse and high in processing energy consumption. With the further increase of the white carbon black dosage, the agglomeration and dispersion problems are more prominent, the material performance is reduced, and the tire rolling resistance optimization space is limited. Disclosure of Invention In view of the above, the invention provides a rubber composite material, a preparation method and application thereof, a rubber compound and application thereof. In order to solve the technical problems, the invention provides a rubber composite material, which comprises silicon dioxide and silane modified liquid 1, 4-polybutadiene grafted on the surface of the silicon dioxide, wherein the specific surface area of the silicon dioxide is 3-50 m 2/g. Preferably, the particle size of the silicon dioxide is 500-5000 meshes; The grafting amount of silane in the silane modified liquid 1, 4-polybutadiene is 10-20%, and the purity of the silane modified liquid 1, 4-polybutadiene is more than 93%. The invention also provides a preparation method of the rubber composite material, which comprises the following steps: Calcining rice hulls to obtain a calcined product, wherein the calcined product comprises silicon dioxide; And mixing the calcined product with silane modified liquid 1, 4-polybutadiene, and then carrying out grafting reaction to obtain the rubber composite material. Preferably, the calcination temperature is 450-800 ℃ and the calcination time is 1-3 hours. Preferably, the mass percentage of the silicon dioxide in the calcined product is more than 60%. Preferably, the mass ratio of the silicon dioxide to the silane modified liquid 1, 4-polybutadiene is 1:0.5-1.5. Preferably, the grafting reaction is carried out in a protective atmosphere at a temperature of 150-170 ℃ for 0.5-2 hours. The invention also provides an application of the rubber composite material prepared by the technical scheme or the preparation method of the technical scheme as a processing aid for preparing the rubber compound. The invention also provides a rubber compound, which comprises the following preparation raw materials in parts by weight: 100-120 parts of rubber; 80-150 parts of white carbon black; 5-10 parts of a silane coupling agent; 1-3 parts of stearic acid; 2-4 parts of zinc oxide; 1-4 parts of an anti-aging agent; 1.5-2.5 parts of microcrystalline wax; 10-30 parts of a processing aid; The processing aid is the rubber composite material prepared by the technical scheme or the preparation method. The invention also provides application of the rubber compound in preparing rubber tires. The invention provides a rubber composite material which comprises silicon dioxide and silane modified liquid 1, 4-polybutadiene grafted on the surface of the silicon dioxide, wherein the specific surface area of the silicon dioxide is 3-50 m 2/g. The silica in the invention has lower specific surface area and lower surface, the silane modified liquid 1, 4-polybutadiene can react with silicon hydroxyl in the white carbon black to improve the bonding capability of the white carbon black and a rubber matrix, and the rubber composite material can improve the dispersibility of the white carbon black in rubber, reduce the filler agglomeration phenomenon and facilitate the action of the white carbon black, thereby improving the wet skid resistance and the wear resistance of the rubber tire and reducing the rolling resistance. Drawings FIG. 1 is an SEM image of the calcined product of example 1; FIG. 2 is a graph showing the particle size distribution of silica in the calcined product of example 1. Detailed Description The invention provides a rubber composite material, which comprises silicon dioxide and silane modified liquid 1, 4-polybutadiene grafted on the surface of the silicon dioxide. In the inve