Provided is a rubber composition for a rim cushion that can provide satisfactorily maintained hardness, elongation at break, and wear resistance and improved low heat build-up and can provide these performances in a well-balanced and highly compatible manner. Silica having a CTAB adsorption specific surface area of 60 m2/g to 100 m2/g, carbon black having a CTAB adsorption specific surface area of 60 m2/g to 160 m2/g, and a sulfur-containing silane coupling agent are blended in diene rubber containing 35 mass% to 65 mass% of isoprene rubber and 35 mass% to 65 mass% of butadiene rubber. At least one type of terminal-modified butadiene rubber for silica is used as the butadiene rubber. A blended amount of the silica per 100 parts by mass of the diene rubber is 10 parts by mass or more and a total of the blended amount of the silica. A blended amount of the carbon black per 100 parts by mass of the diene rubber is more than 50 parts by mass. A product of a stress M100 at 100% elongation and hardness is set to 150 or more.


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    Title :

    RUBBER COMPOSITION FOR RIM CUSHIONS


    Additional title:

    KAUTSCHUKZUSAMMENSETZUNG FÜR RIM-KISSEN
    COMPOSITION DE CAOUTCHOUC POUR COUSSINS DE JANTE


    Contributors:

    Publication date :

    2025-02-19


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    B60C VEHICLE TYRES , Fahrzeugreifen / C08L COMPOSITIONS OF MACROMOLECULAR COMPOUNDS , Massen auf Basis makromolekularer Verbindungen / C08K Verwendung von anorganischen oder nichtmakromolekularen organischen Stoffen als Zusatzstoffe , USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES AS COMPOUNDING INGREDIENTS



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