To provide a reclaimed rubber-containing rubber composition which is excellent in fracture characteristics and fatigue resistance when made into a vulcanized rubber, and to provide a pneumatic tire including a rubber part formed by vulcanizing and molding the reclaimed rubber-containing rubber composition.SOLUTION: The reclaimed rubber-containing rubber composition contains a reclaimed rubber. A vulcanized rubber of the following specific rubber composition for evaluation prepared using the reclaimed rubber exhibits a rubber elastic modulus of 2.0 MPa or more as measured by an atomic force microscope. The rubber composition for evaluation is a rubber composition containing 20 pts.mass of the reclaimed rubber based on 100 pts.mass of an isoprene rubber and containing no carbon black.SELECTED DRAWING: None

    【課題】加硫ゴムとしたときに破壊特性や耐疲労性に優れた再生ゴム含有ゴム組成物、および再生ゴム含有ゴム組成物を加硫成形してなるゴム部を備える空気入りタイヤを提供すること。【解決手段】再生ゴムを含有する再生ゴム含有ゴム組成物であって、再生ゴムが、下記特定の評価用ゴム組成物の加硫ゴムを原子間力顕微鏡で測定したゴム弾性率が2.0MPa以上の値を示す再生ゴムであることを特徴とする再生ゴム含有ゴム組成物。評価用ゴム組成物;イソプレンゴム100質量部に対し、再生ゴムを20質量部含有し、かつカーボンブラックを含有しないゴム組成物【選択図】 なし


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    Title :

    RECLAIMED RUBBER-CONTAINING RUBBER COMPOSITION AND PNEUMATIC TIRE


    Additional title:

    再生ゴム含有ゴム組成物および空気入りタイヤ


    Contributors:

    Publication date :

    2025-01-30


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    C08L COMPOSITIONS OF MACROMOLECULAR COMPOUNDS , Massen auf Basis makromolekularer Verbindungen / B60C VEHICLE TYRES , Fahrzeugreifen



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