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Rubber composition and pneumatic tire using the same

A rubber composition and rubber technology, applied in special tires, tire parts, transportation and packaging, etc., to achieve excellent driving stability and low heat generation

Inactive Publication Date: 2015-04-22
THE YOKOHAMA RUBBER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in Patent Document 1, there is no disclosure concerning the technical idea of ​​blending the elastomer into a rubber composition, especially a rubber composition for tires.

Method used

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  • Rubber composition and pneumatic tire using the same
  • Rubber composition and pneumatic tire using the same
  • Rubber composition and pneumatic tire using the same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～5 and comparative example 1～5

[0046] Sample preparation

[0047]Components other than the vulcanization system (vulcanization accelerator, sulfur) in the compounding (parts by mass) shown in Table 1 were put into a 1.7-liter closed-type Banbury mixer and kneaded for 5 minutes at 165° C. Release from the mill and cool at room temperature. Next, this composition was put into an open roll, and a vulcanizing system was added and kneaded to obtain a rubber composition. Next, the obtained rubber composition was placed in a predetermined mold and vulcanized under pressure at 160° C. for 20 minutes to prepare a vulcanized rubber test piece. The physical properties of the obtained vulcanized rubber test pieces were measured according to the test methods shown below.

[0048] Hardness (20°C): Measured at 20°C in accordance with JIS 6253. The result is a value shown when the value of Comparative Example 1 is taken as an index of 100. The larger the index, the higher the hardness and the better the driving stabili...

Embodiment 6～10 and comparative example 6～7

[0052] Sample preparation

[0053] In the compounding (parts by mass) shown in Table 2, only BR, SBR, silicon dioxide and silane coupling agent were charged into a 1.7-liter closed-type Banbury mixer and mixed for 2 minutes at 165°C. Make diene-based rubber and silica undergo coupling and multiplication reaction, then add other ingredients except the above-mentioned ingredients and sulfur-based (vulcanization accelerator, sulfur) and knead at 150°C for 3 minutes, release from the internal mixer, and store at room temperature cool down. Next, this composition was put into an open roll, and a vulcanizing system was added and kneaded to obtain a rubber composition. Next, the obtained rubber composition was placed in a predetermined mold and vulcanized under pressure at 160° C. for 20 minutes to prepare a vulcanized rubber test piece. The physical properties of the obtained vulcanized rubber test pieces were measured according to the test methods shown above. In addition, the v...

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Abstract

A rubber composition including a diene rubber and, per 100 parts by mass thereof, from 5 to 100 parts by mass of an inorganic filler, and from 0.5 to 40 parts by mass of a polyether polyamide elastomer, and a pneumatic tire using this rubber composition in a cap tread of a tread.

Description

technical field [0001] The present invention relates to a rubber composition and a pneumatic tire using the same. More specifically, the present invention relates to a rubber composition that can impart excellent running stability due to its high hardness and has low heat generation, and a pneumatic tire using the same. Background technique [0002] Pneumatic tires are required to have various performances, but a high balance between running stability and fuel consumption performance is particularly desired. In general, in order to improve driving stability, it is effective to increase the hardness of the tread. In order to achieve high hardness, for example, a technique of blending a resin such as polypropylene into a rubber composition is known. However, this method has a problem that exothermic property deteriorates, which adversely affects fuel consumption performance. In this way, to simultaneously improve running stability and fuel consumption performance is to simul...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L9/00C08L77/00C08K3/36C08K13/02C08L9/06B60C1/00
CPCC08K3/04C08K3/36C08K5/548C08L9/00C08L21/00B60C1/0016C08L77/06C08L9/06C08L2666/02C08L2666/20
Inventor 桐野美昭杉本洋树
Owner THE YOKOHAMA RUBBER CO LTD
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