Tire sidewall rubber composite material and preparation method thereof

A composite material and sidewall rubber technology, applied in special tires, tire parts, transportation and packaging, etc., can solve the problems of reddish-brown color on the sidewall surface, affecting the appearance quality of tires, etc., and achieve good thermal oxidation aging performance, Guarantee the appearance quality requirements and ensure the effect of basic mechanical performance requirements

Active Publication Date: 2018-07-03
SHANDONG LINGLONG TIRE
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Within a certain amount range, the more anti-aging agent is added, the better the anti-oxidation and cracking performance of the rubber compound, but the more the amount of anti-aging agent is, the more anti-aging agent migrates to the sidewall surface. Reddish brown or dark brown, and the oxidation reaction product of anti-aging agent on the sidewall surface is also reddish brown, which will cause reddish brown on the sidewall surface and affect the appearance quality of the tire

Method used

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  • Tire sidewall rubber composite material and preparation method thereof
  • Tire sidewall rubber composite material and preparation method thereof
  • Tire sidewall rubber composite material and preparation method thereof

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preparation example Construction

[0052] In a specific embodiment of the present invention, the present invention provides a method for preparing the sidewall rubber composite material, comprising the following steps: masticating rubber in an internal mixer for 20 to 50 seconds; then adding hydrotalcite and carbon black in sequence , environmentally friendly aromatic oil, zinc oxide, stearic acid, tackifying resin, anti-aging agent 6PPD, anti-aging agent RD and wax for mixing; when the temperature in the internal mixer reaches 120-125 °C, lift the mound once; when the temperature reaches 150 At ~160°C, remove the glue to get the mixed rubber; after cooling at room temperature for 8 hours, put the mixed rubber in the open mill, add oil-extended sulfur powder and accelerator, and mix; after mixing evenly, roll it up 4 to 5 times ; Thin through 5 to 8 times to get the tire sidewall rubber composite material.

[0053] In a preferred embodiment of the present invention, the present invention provides a method for p...

Embodiment 1

[0064] According to the ratio of each component in Table 3, set the mixer speed to 80rpm, the initial temperature in the mixer is 60°C, masticate the natural rubber and butadiene rubber in the mixer for 40 seconds, and then mix the organic Modified magnesium aluminum hydrotalcite powder (1 weight part), carbon black N330, environment-friendly aromatic oil (TDAE), zinc oxide, stearic acid, tertiary butylphenolic resin 0411, anti-aging agent 6PPD, anti-aging agent RD and microcrystalline wax input Carry out mixing in the internal mixer, and when the temperature in the internal mixer reaches 125°C, lift the top bolt for 10 seconds, then press down the top bolt, and when the temperature in the internal mixer is 155°C, the glue is removed to obtain a stage of mixing rubber; after a section of mixed rubber is parked and cooled at room temperature for 8 hours, sulfur powder and accelerator TBBS are added to the two-roll mill, and after mixing until all components are dispersed into th...

Embodiment 2

[0066] According to the ratio of each component in Table 3, set the speed of the internal mixer to 100rpm, and the initial temperature in the internal mixer to be 60°C, masticate the natural rubber and butadiene rubber in the internal mixer for 20 seconds, and then mix the organic Modified magnesium aluminum hydrotalcite powder (3 parts by weight), carbon black N330, environmentally friendly aromatic oil (TDAE), zinc oxide, stearic acid, tert-butylphenolic resin 0411, anti-aging agent 6PPD, anti-aging agent RD and microcrystalline wax input Carry out mixing in the internal mixer, and when the temperature in the internal mixer reaches 120°C, lift the top bolt for 5 seconds, then press down the top bolt, and when the temperature in the internal mixer is 160°C, the rubber is discharged to obtain a stage of mixing rubber; after a section of mixed rubber is parked and cooled at room temperature for 8 hours, add sulfur powder and accelerator TBBS on a two-roll mill, mix until all com...

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Abstract

The invention relates to a composite material for tires, and in particular relates to a tire sidewall rubber composite material. The material comprises 100 parts by weight of rubber, by weight of rubber, 1-10 parts by weight of hydrotalcite, 40-70 parts by weight of carbon black, 4.0-8.0 parts by weight of environment-friendly aromatic hydrocarbon oil, 3.0-9.0 parts by weight of an anti-aging agent, 1.0-4.0 parts by weight of wax, 0.5-3.0 parts by weight of tackifying resin, 1.5-5.0 parts by weight of zinc oxide, 1.0-3.5 parts by weight of stearic acid, 1.0-3.0 parts by weight of sulfur powderand 0.5-2.0 parts by weight of an accelerant. A preparation method of the composite material comprises the following steps: plasticating rubber in an internal mixer, adding other components except the sulfur powder and the accelerator for mixing, lifting a top bolt at the temperature of 120-125 DEG C, performing dumping at 150-160 DEG C to obtain the mixed rubber, mixing the mixed rubber, the sulfur powder and the accelerator in an open mill, rolling for 4-5 times, and conducting thin-pass for 5-8 times to obtain a product. The composite material disclosed by the invention not only meets thebasic mechanical property requirements of the sidewall rubber, but also obviously improves the heat oxygen aging resistance and the ultraviolet aging resistance of the sidewall rubber and the servicelife of the tire can be effectively prolonged.

Description

technical field [0001] The invention relates to a composite material for tires, in particular to a tire sidewall rubber composite material and a preparation method thereof. Background technique [0002] The sidewall of a tire is located on the outer surface of the tire, between the tread and the bead. During the use of the tire, due to long-term exposure to the external environment and the erosion of light, heat, oxygen and ozone, the surface of the sidewall is prone to cracking and aging. Therefore, the formula design of the sidewall rubber of radial tires should focus on ensuring that it has Good thermal oxygen aging resistance, good ozone aging resistance and good UV aging resistance. In the prior art, an effective method to solve tire surface cracks is usually to add an anti-aging agent to the rubber compound. The anti-aging agent can continuously migrate from the inside of the rubber compound to the surface of the sidewall to react with ozone, thereby preventing the oz...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L7/00C08L9/00C08L91/00C08L91/06C08L61/06C08K13/06C08K9/04C08K3/26C08K3/04C08K3/22C08K5/09C08K5/18C08K5/3437
CPCC08L7/00C08L2205/035C08L2201/08C08K2003/2296C08L9/00C08L91/00C08L91/06C08L61/06C08K13/06C08K9/04C08K3/26C08K3/04C08K3/22C08K5/09C08K5/18C08K5/3437C08J3/20C08J2307/00C08J2409/00C08K5/01C08K2003/267C08L9/06C08K3/06B60C1/0025C08K3/01C08K5/0008C08K2003/2227C08L71/12C08K5/39C08K5/44C08K5/5419C08J3/18C08K2003/2217
Inventor 王锋吴晨静马勇聂秋海林彦军刘力
Owner SHANDONG LINGLONG TIRE
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