Rubber composition and tire same

A rubber composition and diene rubber technology, applied in the field of tire rubber, can solve the problems such as failure to provide the volume resistivity of tire compound rubber, and achieve the effects of reducing volume resistivity, improving thermal conductivity, and improving service life

Active Publication Date: 2015-01-07
OTSUKA MATERIAL SCI & TECH SHANGHAICO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0031] However, none of the solutions proposed in the above-mentioned prior art documents can provide a rubber composition for tires that has the advantages of not changing the processing performance of the tire compound (Mooney viscosity is suitable), improving thermal conductivity, and reducing the volume resistivity of the tire.

Method used

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  • Rubber composition and tire same
  • Rubber composition and tire same
  • Rubber composition and tire same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-2

[0144] The following table 1-2 shows the composition of the rubber composition prepared according to the above mixing method, and the performance of the test, surface modified carbon nanotubes (modified group is cyclopentadiene and its polymer) Performance comparison with carbon black and non-surface-modified carbon nanotubes:

[0145] Table 1 (surface-modified carbon nanotubes have carried out performance comparison with the carbon black of same addition, wherein composition 1-1, 1-2, 1-3, 1-4 are as comparison)

[0146]

[0147] It can be seen from Table 1 above:

[0148] 1) Surface-modified carbon nanotubes can overcome the shortcomings of poor dispersion and difficult processing. It has the same Mooney viscosity as carbon black, and its tensile strength, tear strength, and wear resistance are all better than carbon with the same amount. Black is better.

[0149] 2) The hysteresis loss of surface-modified carbon nanotubes is the same as that of carbon black with the sa...

Embodiment 3-5

[0159] The following table 3-5 shows the composition of the rubber composition prepared according to the above-mentioned mixing method, and the performance of the test, by changing the surface modified carbon nanotube (modified group is cyclopentadiene and its multipolymer ) to compare with the reference formulation without adding carbon nanotubes.

[0160] Table 3 (wherein 3-1 is a reference formula, and all the other are experimental implementation formulas)

[0161]

[0162]

[0163] Table 4 (wherein 4-1 is a reference formula, and all the other are experimental implementation formulas)

[0164]

[0165] Table 5 (wherein 5-1 is a reference formula, and all the other are experimental implementation formulas)

[0166]

[0167] Can further find out from above table 3-5: for the situation of 30-110 parts by weight of white carbon black consumption and 3-40 parts by weight of carbon black consumption, add cyclopentadiene and polymer surface modification thereof The...

Embodiment 6

[0169] The following table 6 shows the composition of the rubber composition prepared according to the above mixing method, and the performance of the test. Table 6 is a comparison between carbon nanotubes modified by various modifying groups, wherein composition 6 -1, 6-2, 6-3, 6-4, 6-5 for comparison:

[0170] Table 6

[0171]

[0172] It can be seen from Table 6 above that:

[0173] After adding cyclopentadiene and its polymers, surface modified carbon nanotubes with hydroxyl groups, the Mooney viscosity and hardness increased, while adding long-chain aliphatic hydrocarbon surface-modified carbon nanotubes, the Mooney viscosity and hardness decreased, and the long-chain Although aliphatic hydrocarbon modified carbon nanotubes can improve its compatibility with rubber and its dispersion in rubber, but the longer organic molecular chains hinder the contact bridging of carbon nanotubes, thereby reducing the conductivity of the rubber compound. performance. The dispersibi...

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Abstract

The invention relates to a rubber composition and a tire containing the same, providing a rubber composition. The rubber composition comprises the following raw materials in parts by weight: 100 parts of diene rubber, 20-120 parts of white carbon black, 0-50 parts of carbon black and 2-30 parts of surface-modified carbon nanotubes, wherein the molecule of a modified group at least contains an unsaturated carbon-carbon double bond or triple bond; the number of carbon atoms of the molecule is greater than or equal to 2; and the unsaturated carbon-carbon double bond or triple bond is on a main chain or a branch chain. The invention also provides the tire containing the rubber composition.

Description

technical field [0001] The invention belongs to the field of tire rubber, and relates to a rubber composition for tires, more specifically, to a rubber composition including specific surface-modified carbon nanotubes (CNTs), and a tire containing the same. Background technique [0002] Nowadays, it is highly desirable to provide a tire which combines low rolling resistance, short wet braking distance, long service life, good handling performance and high damage resistance. Beginning in the 1990s, it was found that silica can improve rolling resistance, wet braking distance and tear resistance. However, the introduction of silica has many adverse effects, which is due to the fact that silica is electrically Poor conductor, which requires the introduction of a conductive chimney in the tread to achieve the discharge of charges to achieve anti-static. The introduction of conductive chimneys will increase equipment investment and increase production costs. [0003] At the same...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L7/00C08L9/00C08L23/22C08L23/16C08L9/06C08K13/06C08K9/04C08K3/04C08K7/00C08K3/36B60C1/00
CPCC08K2201/003C08K2201/004C08K2201/014C08L9/06C08L2205/035C08L9/00C08L91/06C08L91/00C08K13/06C08K9/06C08K7/24C08K3/36C08K3/04C08K2003/2296C08K5/09C08L7/00
Inventor 贺炅皓邵红琪
Owner OTSUKA MATERIAL SCI & TECH SHANGHAICO LTD
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