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Rubber composition

A rubber composition and rubber technology, applied in the field of rubber composition, can solve the problems of fuel deterioration and low wear resistance of vulcanized rubber

Inactive Publication Date: 2018-06-29
TOYO TIRE & RUBBER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when the compounding design of the rubber composition is carried out for the purpose of improving the WET performance, the wear resistance and low fuel efficiency of the obtained vulcanized rubber may deteriorate, and therefore, a technology for improving these performances in a good balance is required.

Method used

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  • Rubber composition

Examples

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Effect test

Embodiment

[0035] Hereinafter, examples and the like in which the configuration and effects of the present invention are specifically given will be described. In addition, with respect to the evaluation items in Examples etc., evaluation was performed on rubber samples obtained by heating each rubber composition at 150° C. for 30 minutes and vulcanizing on the basis of the following evaluation conditions.

[0036] (1) WET performance (wet grip)

[0037] Using a viscoelasticity testing machine manufactured by Toyo Seiki Co., Ltd., the loss coefficient tanδ was measured at a frequency of 10 Hz, a static strain of 10%, a dynamic strain of 1%, and a temperature of 0°C, and expressed as an index obtained by taking the value of Comparative Example 1 as 100. . A higher numerical value means better WET performance.

[0038] (2) Heat release characteristics (low heat release)

[0039] Using a viscoelasticity testing machine manufactured by Toyo Seiki Co., Ltd., the loss coefficient tanδ was me...

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Abstract

A rubber composition, comprising a terminal-modified polystyrene butadiene rubber in an amount of 10 to 80 parts by mass when the entire amount of rubber components in the composition is regarded as 100 parts by mass; and a thermoplastic elastomer in an amount of 1 to 20 parts by mass for the 100 parts by mass of the rubber components; the thermoplastic elastomer showing a tan[delta] peak value inthe range of -20 to 20 DEG C in a dynamic viscoelasticity test (temperature dependency measurement at 10 Hz) of the elastomer according to JIS K6394, and the peak value being 1 or more.

Description

technical field [0001] The present invention relates to a rubber composition which is very useful as a raw material for producing a vulcanized rubber with well-balanced improvements in WET performance, abrasion resistance, and low fuel oil performance. Background technique [0002] In general, tires are used in various driving environments, and it is required to improve the grip performance on, for example, rain or wet roads, that is, WET performance. However, when the compounding design of the rubber composition is carried out for the purpose of improving the WET performance, the wear resistance and low fuel efficiency of the obtained vulcanized rubber may deteriorate. Therefore, a technology for improving these performances in a good balance is required. [0003] Patent Document 1 below describes the technique of blending at least one type of Diene elastomer and 18-40phr hydrogenated styrene thermoplastic elastomer. [0004] Patent Document 2 below describes a technique ...

Claims

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Application Information

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IPC IPC(8): C08L53/02C08L9/06C08L9/00C08L91/06C08L91/00C08L7/00C08K13/02C08K3/36C08K3/04C08K3/22C08K5/09
CPCC08L53/025C08L2205/035C08L2205/025C08L2205/02C08L9/06C08L9/00C08L91/06C08L7/00C08K13/02C08K3/36C08K3/04C08K3/22C08K5/09C08L91/00C08L2207/324C08L15/00C08L53/005C08L2205/03
Inventor 由里贵史
Owner TOYO TIRE & RUBBER CO LTD