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Rubber composition and tire

A rubber composition, rubber technology, applied in special tires, tire parts, transportation and packaging, etc., can solve the problems of tire tread wear resistance, rolling resistance factory processability and crack resistance cannot be improved at the same time, Achieve the effect of improving factory workability and improving crack resistance

Inactive Publication Date: 2015-06-03
BRIDGESTONE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] However, the problem remains that the wear resistance, rolling resistance, factory processability and crack resistance of the tire tread cannot be simultaneously improved

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 1 to 3 and comparative example 1 to 10

[0066] Preparation of rubber composition

[0067] The components were mixed in a Banbury mixer in the proportions listed in Table 1 below to prepare rubber compositions. Carbon black properties were measured by the following methods. In addition, carbon black was produced under the conditions listed in Table 2 by an oil furnace method of production using a furnace manufactured by Asahi Carbon Co., Ltd.

[0068] Note that this furnace is a cylindrical manufacturing device having a first zone 1 (diameter: 700 mm, length: 1000 mm) for burning fuel and air for supplying raw oil and generating carbon black The second area 2 (upstream end diameter: 700mm, downstream end diameter: 230mm, length: 1200mm), choke part 4 (diameter: 230mm, length: 400mm), and the third area (diameter: 576mm, length: 5000mm, Reaction zone diameter / choke zone diameter ratio: 2.5).

[0069] In addition, in Comparative Example 6, ASTM N330 was used as carbon black, and in Comparative Example 7, ASTM N339 w...

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PUM

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Abstract

The present invention provides a rubber composition for tire treads capable of producing a tire tread having improved wear resistance, rolling resistance, factory processability, and crack resistance, and a pneumatic tire produced using the same. The rubber composition is characterized in that it is obtained by blending 20 to 100 parts by mass of carbon black having a CTAB specific surface area of ​​60 to 105 m2 / g with respect to 100 parts by mass of the rubber component, 24M4DBP oil absorption is 70cm3 / 100g to 105cm3 / 100g, N2SA / IA is less than 0.95, and satisfies the following expression (1): TINT (%)+0.4×24M4DBP oil absorption (cm3 / 100g)-0.5×CTAB specific surface area ( m2 / g)>106 (1).

Description

technical field [0001] The present invention relates to a rubber composition and a tire, and particularly to a rubber composition for a tire tread capable of producing a tire tread having improved abrasion resistance, rolling resistance, factory processability and chipping resistance (capable of producing a tire tread having A rubber composition for a tire tread having low heat generation, excellent abrasion resistance, and high resilience), and a pneumatic tire manufactured using the same. Background technique [0002] There are two performance tire treads that are required to run with the tire in contact with the ground while being excellent in resistance to abrasion (abrasion resistance) and running while causing little hysteresis loss (rolling resistance) when the rubber deforms (rolling resistance) tread rubber), however it is known that there is a trade-off between these properties. [0003] The tire tread properties are greatly influenced by the physical properties (...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L21/00B60C1/00C08K3/04
CPCB60C1/0016C01P2006/12C01P2006/19C08K3/04C08K2201/006C09C1/50Y02T10/86C08L21/00C08L7/00
Inventor 藤泽秀忠
Owner BRIDGESTONE CORP
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