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CN-122011527-A - Graphene-based high-wear-resistance tire tread and preparation method thereof

CN122011527ACN 122011527 ACN122011527 ACN 122011527ACN-122011527-A

Abstract

The invention discloses a graphene-based high-wear-resistance tire tread and a preparation method thereof, wherein the preparation method comprises the steps of (1) preparing graphene masterbatch, namely mixing and plasticating graphene and natural rubber, adding a dispersing agent in the mixing process, and plasticating to obtain the graphene masterbatch; and (2) preparing a tread, namely mixing graphene masterbatch, carbon black, zinc oxide, stearic acid, an anti-aging agent, protective wax, 1% of oil-filled sulfur powder, an accelerator and a scorch retarder, sequentially carrying out mixing processing in an internal mixer and an open mill to prepare a tread rubber, and then putting the tread rubber into a molding press for molding to prepare the tire tread. According to the method, the graphene master batch is obtained by processing graphene, and the method for adding the graphene master batch into the tire is realized by changing the form of the graphene on the premise of not affecting the performance of the graphene. The problem that graphene cannot be dispersed into a tire formula in actual production although the graphene has good performance is solved.

Inventors

  • GE HAIJIAN

Assignees

  • 物产中大欧泰有限公司

Dates

Publication Date
20260512
Application Date
20260320

Claims (10)

  1. 1. The high-wear-resistance tire tread based on graphene is characterized by comprising the following components in parts by weight: 113 parts of graphene masterbatch, 40 parts of carbon black, 3.5 parts of zinc oxide, 2 parts of stearic acid, 3 parts of an anti-aging agent, 1 part of protective wax, 1.3 parts of 1% oil-filled sulfur powder, 1.2 parts of an accelerator and 0.2 part of a scorch retarder.
  2. 2. The graphene-based high wear resistant tire tread of claim 1, wherein the carbon black is N234 carbon black.
  3. 3. The graphene-based high wear-resistant tire tread according to claim 1, wherein the anti-aging agent comprises an anti-aging agent 4020 and an anti-aging agent RD in a mass ratio of 1:1.
  4. 4. The graphene-based high wear resistant tire tread of claim 1, wherein the accelerator is accelerator NS.
  5. 5. The graphene-based high wear-resistant tire tread of claim 1, wherein the scorch retarder is a scorch retarder CTP.
  6. 6. A method of preparing a graphene-based high wear resistant tyre tread according to any one of claims 1 to 5, comprising the steps of: (1) Preparation of graphene masterbatch Mixing and plasticating graphene and natural rubber, adding a dispersing agent in the mixing process, and plasticating to obtain graphene master batch; (2) Preparation of a tread Mixing graphene masterbatch, carbon black, zinc oxide, stearic acid, an anti-aging agent, protective wax, 1% oil-filled sulfur powder, an accelerator and a scorch retarder, sequentially mixing in an internal mixer and an open mill to obtain a tread rubber, and then putting the tread rubber into a molding press for molding to obtain the tire tread.
  7. 7. The preparation method of the graphene-based high-wear-resistance tire tread disclosed in claim 6, wherein in the step (1), the mass ratio of graphene to natural rubber to a dispersing agent is 10:100:3, and the dispersing agent is a dispersing agent FS-97.
  8. 8. The method of preparing a graphene-based highly abrasion resistant tire tread of claim 6, wherein the masticating in step (1) comprises: Mixing and plasticating, namely adding natural rubber into an open mill, adjusting the roll gap of the open mill to be 1-2mm, carrying out thin-pass for 3-5 times to ensure that the natural rubber is wrapped with rolls to form a smooth film, uniformly scattering graphene and a dispersing agent FS-97 on the natural rubber film, gradually reducing the roll gap to be 0.5-1mm, carrying out mixing, controlling the temperature of the open mill to be 40-60 ℃ in the mixing process, and ensuring that the graphene and the dispersing agent are fully mixed with the natural rubber in the mixing time of 15-20 minutes. After the mixing is finished, the sizing material is cut into pieces with proper size. And (3) further plasticating, namely putting the cut rubber blocks into an internal mixer, setting the initial temperature of the internal mixer to be 80-100 ℃, enabling the rotation speed of a rotor to be 60-80 r/min, starting the internal mixer, plasticating for 5-8 min, closely observing the temperature and state of rubber materials in the internal mixer in the plasticating process, discharging the rubber materials when the temperature is increased to 120-130 ℃, putting the rubber materials into an open mill again for thinning and passing for 2-3 times after the rubber materials are discharged, and further improving the uniformity of the rubber materials, so as to finally obtain the graphene masterbatch.
  9. 9. The preparation method of the graphene-based high-wear-resistance tire tread is characterized in that in the step (2), mixing processing in an internal mixer comprises the steps of starting the internal mixer, starting mixing, keeping the temperature of the internal mixer at 100-120 ℃ for 2-3 minutes before mixing, enabling raw materials to be primarily mixed, gradually increasing the temperature of the internal mixer to 140-150 ℃ and continuing mixing for 8-10 minutes, closely observing pressure and temperature changes of rubber materials in the internal mixer in the mixing process, and timely adjusting parameters of the internal mixer to ensure uniform mixing of the rubber materials. And when the rubber in the internal mixer reaches proper viscosity and elasticity, rubber is discharged.
  10. 10. The preparation method of the graphene-based high-wear-resistance tire tread disclosed in claim 9, wherein the mixing processing in the open mill comprises the steps of putting the discharged rubber material into the open mill, adjusting the roll gap of the open mill to be 1-1.5mm, carrying out thin pass for 5-7 times, continuously cutting and overturning the rubber material in the thin pass process, enabling the rubber material to be further uniformly mixed, and discharging bubbles in the rubber material. After the thinning is finished, the roll gap is properly increased to 2-3mm, and the rubber material is flaked, so that the tread rubber material is obtained.

Description

Graphene-based high-wear-resistance tire tread and preparation method thereof Technical Field The invention relates to the technical field of tire manufacturing, in particular to a high-wear-resistance tire tread based on graphene and a preparation method thereof. Background At present, domestic tire manufacturers are involved in a large number of specialized high wear resistant formulations. There are also many theoretical studies on the improvement of wear resistance by adding graphene to the tread. The high wear-resistant tread formula of the tire is required, and graphene can improve the wear resistance of the tread is also accepted. However, in actual production, the hardness of graphene is extremely high, the graphene is difficult to disperse, and the graphene is difficult to add into a formula, so that the problem of uniformly dispersing the graphene into a sizing material is a great difficulty in the industry. Disclosure of Invention In view of the above, the invention provides a graphene-based high-wear-resistance tire tread and a preparation method thereof. Graphene has the characteristic of high resistance, but cannot be directly used in tire tread formulations due to high hardness. According to the method, the graphene master batch is obtained by processing graphene, and the method for adding the graphene master batch into the tire is realized by changing the form of the graphene on the premise of not affecting the performance of the graphene. The problem that graphene cannot be dispersed into a tire formula in actual production although the graphene has good performance is solved. In order to achieve the above purpose, the present invention adopts the following technical scheme: A graphene-based high-wear-resistance tire tread comprises the following components in parts by weight: 113 parts of graphene masterbatch, 40 parts of carbon black, 3.5 parts of zinc oxide, 2 parts of stearic acid, 3 parts of an anti-aging agent, 1 part of protective wax, 1.3 parts of 1% oil-filled sulfur powder, 1.2 parts of an accelerator and 0.2 part of a scorch retarder. Preferably, the carbon black is an N234 carbon black. Preferably, the anti-aging agent includes an anti-aging agent 4020 and an anti-aging agent RD, the mass ratio of the two is 1:1. Preferably, the accelerator is accelerator NS. Preferably, the scorch retarder is a scorch retarder CTP. The invention also aims to provide a preparation method of the graphene-based high-wear-resistance tire tread, which comprises the following steps of: (1) Preparation of graphene masterbatch Mixing and plasticating graphene and natural rubber, adding a dispersing agent in the mixing process, and plasticating to obtain graphene masterbatch, wherein the tire crown is 100% natural rubber, and the graphene is uniformly dispersed in the tire crown formula by utilizing the principle that graphene masterbatch particles are compatible with the original formula rubber; (2) Preparation of a tread Mixing graphene masterbatch, carbon black, zinc oxide, stearic acid, an anti-aging agent, protective wax, 1% oil-filled sulfur powder, an accelerator and a scorch retarder, sequentially mixing in an internal mixer and an open mill to obtain a tread rubber, and then putting the tread rubber into a molding press for molding to obtain the tire tread. Preferably, in the step (1), the mass ratio of the graphene to the natural rubber to the dispersing agent is 10:100:3, and the dispersing agent is a dispersing agent FS-97. Preferably, the plasticating in step (1) comprises: Mixing and plasticating, namely adding natural rubber into an open mill, adjusting the roll gap of the open mill to be 1-2mm, carrying out thin-pass for 3-5 times to ensure that the natural rubber is wrapped with rolls to form a smooth film, uniformly scattering graphene and a dispersing agent FS-97 on the natural rubber film, gradually reducing the roll gap to be 0.5-1mm, carrying out mixing, controlling the temperature of the open mill to be 40-60 ℃ in the mixing process, and ensuring that the graphene and the dispersing agent are fully mixed with the natural rubber in the mixing time of 15-20 minutes. After the mixing is finished, the sizing material is cut into pieces with proper size. And (3) further plasticating, namely putting the cut rubber blocks into an internal mixer, setting the initial temperature of the internal mixer to be 80-100 ℃, enabling the rotation speed of a rotor to be 60-80 r/min, starting the internal mixer, plasticating for 5-8 min, closely observing the temperature and state of rubber materials in the internal mixer in the plasticating process, discharging the rubber materials when the temperature is increased to 120-130 ℃, putting the rubber materials into an open mill again for thinning and passing for 2-3 times after the rubber materials are discharged, and further improving the uniformity of the rubber materials, so as to finally obtain the graphene masterbatch. Preferably, the mixing proce