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Rubber composition and tire

A rubber composition and rubber technology, applied in special tires, tire parts, tire treads/tread patterns, etc., can solve the problems of low heat generation, etc., and achieve excellent crack resistance and low heat generation, durability Excellent effect of crack resistance and low loss

Inactive Publication Date: 2020-03-06
BRIDGESTONE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0009] By using carbon black in the rubber composition, tire strength such as fracture resistance and crack resistance can be improved, but there is a problem that low heat generation performance decreases when the compounding amount is increased

Method used

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0070] Hereinafter, examples are given and the present invention will be described in more detail, but the present invention is not limited at all by the following examples.

[0071]

[0072] Using the rubber components shown in Tables 2-6, carbon black and silica, and the ingredients shown in Table 1, rubber compositions with the formulations shown in Tables 1-6 were prepared according to conventional methods.

[0073] [Detailed description of each component in Tables 2 to 6]

[0074] (rubber component)

[0075] NR: Natural Rubber, RSS#1

[0076] BR: polybutadiene rubber, manufactured by JSR Corporation, trade name "BR01"

[0077] (carbon black)

[0078] CB-1: Asahi Carbon Co., Ltd., product name "Asahi #15" (CTAB: 20m 2 / g, DBP oil absorption: 12ml / 100g, N 2 SA: 41m 2 / g)

[0079] CB-2: manufactured by Asahi Carbon Co., Ltd., trade name "Asahi #55" (CTAB: 31m 2 / g, DBP oil absorption: 26ml / 100g, N 2 SA: 87m 2 / g)

[0080] CB-3: Asahi Carbon Co., Ltd., trade name...

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Abstract

The present invention provides a rubber composition capable of providing a vulcanized rubber excellent in fracture resistance, crack resistance, and low heat generation property. The rubber composition comprises a rubber component (A), a carbon black (B) having a CTAB specific surface area of 30-110 m2 / g and a silica (C) having a CTAB specific surface area of 200 m2 / g or larger. The total amount of the amount (b) of the carbon black (B) and the amount (c) of the silica (C) is 30-80 parts by mass relative to 100 parts by mass of the rubber component (A), and (b):(c)=(70-85):(30-15).

Description

technical field [0001] The present invention relates to rubber compositions and tires. Background technique [0002] In recent years, under social demands for energy saving and resource saving, tires with low rolling resistance have been demanded in order to save fuel consumption of automobiles. In response to this demand, as a method of reducing tire rolling resistance, it is known to use a rubber composition with reduced hysteresis loss by reducing the amount of carbon black used or using low-grade carbon black, that is, a rubber composition with low heat generation, for tire components. , especially the tread rubber method. [0003] Low rolling resistance can be achieved by using carbon black with low reinforcement or reducing the compounding amount of carbon black. [0004] For example, it is disclosed that in order to obtain a motorcycle tire having both wet grip performance and chipping resistance performance, the rubber composition for a tread of a motorcycle tire i...

Claims

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Application Information

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IPC IPC(8): C08L21/00B60C1/00C08K3/04C08K3/36C08L7/00
CPCB60C1/00C08K3/04C08K3/36C08L7/00C08L21/00C08L9/00B60C1/0016B60C11/0008B60C2011/0025
Inventor 金富芳彦武者信一浜谷悟司
Owner BRIDGESTONE CORP
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